Suzanne Clark

NameSuzanne Clark
Job titleSenior Scientific Specialist - Statistician
Email addresssuzanne.clark@rothamsted.ac.uk
DepartmentComputational and Analytical Sciences
Research clusterCAS: Statistics and Ecoinformatics
Preferred citationClark, S. J.
OfficeHarpenden

Research outputs

Searching for wheat resistance to aphids and wheat bulb fly in the historical Watkins and Gediflux wheat collections

Aradottir, G. I., Martin, J. L., Clark, S. J., Pickett, J. A. and Smart, L. E. 2017. Searching for wheat resistance to aphids and wheat bulb fly in the historical Watkins and Gediflux wheat collections. Annals of Applied Biology. 170 (2), pp. 179-188.

Oilseed rape (Brassica napus) as a resource for farmland insect pollinators: quantifying floral traits in conventional varieties and breeding systems

Carruthers, J. M., Cook, S. M., Wright, G. A., Osborne, J. L., Clark, S. J., Swain, J. L. and Haughton, A. J. 2017. Oilseed rape (Brassica napus) as a resource for farmland insect pollinators: quantifying floral traits in conventional varieties and breeding systems. GCB Bioenergy. 9 (8), pp. 1370-1379.

Mass seasonal bioflows of high-flying insect migrants

Hu, G., Lim, K. S., Horvitz, N., Clark, S. J., Reynolds, D. R., Sapir, N. and Chapman, J. W. 2016. Mass seasonal bioflows of high-flying insect migrants. Science. 354 (6319), pp. 1584-1587.

Induced thiacloprid insensitivity in honeybees (Apis mellifera L.) is associated with up-regulation of detoxification genes

Alptekin, S., Bass, C., Nicholls, C., Paine, M. J. I., Clark, S. J., Field, L. and Moores, G. D. 2016. Induced thiacloprid insensitivity in honeybees (Apis mellifera L.) is associated with up-regulation of detoxification genes. Insect Molecular Biology. 25 (2), pp. 171-180.

Flight performance of actively foraging honey bees is reduced by a common pathogen

Wells, T., Wolf, S., Nicholls, E., Groll, H., Lim, K. S., Clark, S. J., Swain, J. L., Osborne, J. L. and Haughton, A. J. 2016. Flight performance of actively foraging honey bees is reduced by a common pathogen. Environmental Microbiology Reports. 8 (5), pp. 728-737.

Triticum monococcum lines with distinct metabolic phenotypes and phloem-based partial resistance to the bird cherry-oat aphid Rhopalosiphum padi

Greenslade, A. F. C., Ward, J. L., Martin, J. L., Corol, D. I., Clark, S. J., Smart, L. E. and Aradottir, G. I. 2016. Triticum monococcum lines with distinct metabolic phenotypes and phloem-based partial resistance to the bird cherry-oat aphid Rhopalosiphum padi. Annals of Applied Biology. 168 (3), pp. 435-449.

Dedicated biomass crops can enhance biodiversity in the arable landscape

Haughton, A. J., Bohan, D. A., Clark, S. J., Mallott, M. D., Mallott, V., Sage, R. and Karp, A. 2016. Dedicated biomass crops can enhance biodiversity in the arable landscape. GCB Bioenergy. 8 (6), pp. 1071-1081.

The effects of Nosema ceranae on honey bee flight distance

Wells, T., Nicholls, B., Wolf, S., Groll, H., Lim, K. S., Clark, S. J., Swain, J. L., Osborne, J. L. and Haughton, A. J. 2015. The effects of Nosema ceranae on honey bee flight distance. BBKA.

Dynamics of competition and co-infection between Zoophthora radicans and Pandora blunckii in Plutella xylostella larvae

Sandoval-Aguilar, J. A., Guzman-Franco, A. W., Pell, J. K., Clark, S. J., Alatorre-Rosas, R., Santillan-Galicia, M. T. and Valdovinos-Ponce, G. 2015. Dynamics of competition and co-infection between Zoophthora radicans and Pandora blunckii in Plutella xylostella larvae. Fungal Ecology. 17, pp. 1-9.

Appendix 4. Effect of brassica field margins on arthropod biodiversity and biocontrol in a wheat-oilseed rape rotation

Cook, S. M., Skellern, M. P., Torrance, M. T., Nevard, L., Watts, N. P., Clark, S. J. and Pell, J. K. 2015. Appendix 4. Effect of brassica field margins on arthropod biodiversity and biocontrol in a wheat-oilseed rape rotation.

Statistical methods in biology: design and analysis of experiments and regression

Welham, S. J., Gezan, S. A., Clark, S. J. and Mead, A. 2015. Statistical methods in biology: design and analysis of experiments and regression. CRC Press, Boca Raton, Florida.

Temperature-activity relationships in Meligethes aeneus: implications for pest management

Ferguson, A. W., Nevard, L. M., Clark, S. J. and Cook, S. M. 2015. Temperature-activity relationships in Meligethes aeneus: implications for pest management. Pest Management Science. 71 (3), pp. 459-466.

Slow bee paralysis virus and its transmission in honey bee pupae by Varroa destructor

Santillan-Galicia, M. T., Ball, B. V., Clark, S. J. and Alderson, P. G. 2014. Slow bee paralysis virus and its transmission in honey bee pupae by Varroa destructor. Journal of Apicultural Research. 53, pp. 146-154.

The efficacy of flufenacet based herbicides on Alopecurus myosuroides (black-grass): analysis of data from 375 field trials

Hull, R. I., Clark, S. J., Westrup, L. and Moss, S. R. 2014. The efficacy of flufenacet based herbicides on Alopecurus myosuroides (black-grass): analysis of data from 375 field trials. Crop production in Southern Britain: precision decisions for profitable cropping. Aspects of Applied Biology 127 . Association of Applied Biologists (AAB) Wellesbourne Warwick . pp. 49-56

Splash dispersal of Phyllosticta citricarpa conidia from infected citrus fruit

Perryman, S. A. M., Clark, S. J. and West, J. S. 2014. Splash dispersal of Phyllosticta citricarpa conidia from infected citrus fruit. Scientific Reports. 4, p. 6568.

So near and yet so far: harmonic radar reveals reduced homing ability of Nosema infected honeybees

Wolf, S., McMahon, D. P., Lim, K. S., Pull, C. D., Clark, S. J., Paxton, R. J. and Osborne, J. L. 2014. So near and yet so far: harmonic radar reveals reduced homing ability of Nosema infected honeybees. PLOS ONE. 9, p. e103989.

The ontogeny of bumblebee flight trajectories: from naive explorers to experienced foragers

Osborne, J. L., Smith, A., Clark, S. J., Reynolds, D. R., Barron, M. C., Lim, K. S. and Reynolds, A. M. 2013. The ontogeny of bumblebee flight trajectories: from naive explorers to experienced foragers. PLOS ONE. 8, p. e78681.

Competition between isolates of Zoophthora radicans co-infecting Plutella xylostella populations

Morales-Vidal, S., Alatorre-Rosas, R., Clark, S. J., Pell, J. K. and Guzman-Franco, A. W. 2013. Competition between isolates of Zoophthora radicans co-infecting Plutella xylostella populations. Journal of Invertebrate Pathology. 113, pp. 137-145.

Use of honey bees (Apis mellifera L.) to detect the presence of Mediterranean fruit fly (Ceratitis capitata Wiedemann) larvae in Valencia oranges

Chamberlain, K., Briens, M., Jacobs, J. H., Clark, S. J. and Pickett, J. A. 2012. Use of honey bees (Apis mellifera L.) to detect the presence of Mediterranean fruit fly (Ceratitis capitata Wiedemann) larvae in Valencia oranges. Journal of the Science of Food and Agriculture. 92 (10), pp. 2050-2054.

Three-point appraisal of genetic linkage maps

Gilks, W. R., Welham, S. J., Wang, J., Clark, S. J. and King, G. J. 2012. Three-point appraisal of genetic linkage maps. Theoretical and Applied Genetics. 125, pp. 1393-1402.

Large carabid beetle declines in a United Kingdom monitoring network increases evidence for a widespread loss in insect biodiversity

Brooks, D. R., Bater, J., Clark, S. J., Monteith, D. T., Andrews, C., Corbett, S. J., Beaumont, D. A. and Chapman, J. W. 2012. Large carabid beetle declines in a United Kingdom monitoring network increases evidence for a widespread loss in insect biodiversity. Journal of Applied Ecology. 49 (5), pp. 1009-1019.

Mesocosm experiments to assess the transmission of Pandora neoaphidis within simple and mixed field margins and over the crop-margin interface

Baverstock, J., Torrance, M. T., Clark, S. J. and Pell, J. K. 2012. Mesocosm experiments to assess the transmission of Pandora neoaphidis within simple and mixed field margins and over the crop-margin interface. Journal of Invertebrate Pathology. 110, pp. 102-107.

Trophic links between functional groups of arable plants and beetles are stable at national scale

Brooks, D. R., Storkey, J., Clark, S. J., Firbank, L. G., Petit, S. and Woiwod, I. P. 2012. Trophic links between functional groups of arable plants and beetles are stable at national scale. Journal of Animal Ecology. 81 (1), pp. 4-13.

Use of quantitative PCR to understand within-host competition between two entomopathogenic fungi

Guzman-Franco, A. W., Atkins, S. D., Clark, S. J., Alderson, P. G. and Pell, J. K. 2011. Use of quantitative PCR to understand within-host competition between two entomopathogenic fungi. Journal of Invertebrate Pathology. 107, pp. 155-158.

Potential value of the fibre nettle Urtica dioica as a resource for the nettle aphid Microlophium carnosum and its insect and fungal natural enemies

Baverstock, J., Porcel, M., Clark, S. J., Copeland, J. E. and Pell, J. K. 2011. Potential value of the fibre nettle Urtica dioica as a resource for the nettle aphid Microlophium carnosum and its insect and fungal natural enemies. BioControl. 56 (2), pp. 215-223.

Trends in the timings of the start and end of annual flight periods

Harrington, R. and Clark, S. J. 2010. Trends in the timings of the start and end of annual flight periods. in: Dixon, A. F. G., Michaud, J. P. and Kindlmann, P. (ed.) Aphid biodiversity under environmental change Springer, Dordrecht. pp. 41-54

Transmission of deformed wing virus and slow paralysis virus to adult bees (Apis mellifera L.) by Varroa destructor

Santillan-Galicia, M. T., Ball, B. V., Clark, S. J. and Alderson, P. G. 2010. Transmission of deformed wing virus and slow paralysis virus to adult bees (Apis mellifera L.) by Varroa destructor. Journal of Apicultural Research and Bee World. 49, pp. 141-148.

Susceptibility of six Lilium to damage by the lily beetle, Lilioceris lilii (Coleoptera: Chrysomelidae)

Salisbury, A., Clark, S. J., Powell, W. and Hardie, J. 2010. Susceptibility of six Lilium to damage by the lily beetle, Lilioceris lilii (Coleoptera: Chrysomelidae). Annals of Applied Biology. 156 (1), pp. 103-110.

Layers of nocturnal insect migrants at high-altitude: the influence of atmospheric conditions on their formation

Wood, C. R., Clark, S. J., Barlow, J. F. and Chapman, J. W. 2010. Layers of nocturnal insect migrants at high-altitude: the influence of atmospheric conditions on their formation. Agricultural and Forest Entomology. 12 (1), pp. 113-121.

Pollinator effectiveness and fruit set in common ivy, Hedera helix (Araliaceae)

Jacobs, J. H., Clark, S. J., Denholm, I., Goulson, D., Stoate, C. and Osborne, J. L. 2010. Pollinator effectiveness and fruit set in common ivy, Hedera helix (Araliaceae). Arthropod-Plant Interactions. 4, pp. 19-28.

Perennial energy crops: implications and potential

Karp, A., Haughton, A. J., Bohan, D. A., Lovett, A. A., Bond, A. J., Dockerty, T., Sunnenberg, G., Finch, J. W., Sage, R. B., Appleton, K. J., Riche, A. B., Mallott, M. D., Mallott, V. E,., Cunningham, M. D., Clark, S. J. and Turner, M. M. 2009. Perennial energy crops: implications and potential. in: Winter, M. and Lobley, M. (ed.) What is land for? The food, fuel and climate change debate Earthscan Publications Ltd. pp. 47-72

The GAMes aphids play

Bell, J. R., Harrington, R., Welham, S. J., Clark, S. J. and Pickup, J. 2009. The GAMes aphids play. Abstracts 8th International Symposium on Aphids, Catania, 8-12 June 2009 .

Competition and co-existence of Zoophthora radicans and Pandora blunckii , two co-occurring fungal pathogens of the diamondback moth, Plutella xylostella

Guzman-Franco, A. W., Clark, S. J., Alderson, P. G. and Pell, J. K. 2009. Competition and co-existence of Zoophthora radicans and Pandora blunckii , two co-occurring fungal pathogens of the diamondback moth, Plutella xylostella. Mycological Research. 113 (11), pp. 1312-1321.

Intraguild interactions between the entomopathogenic fungus Pandora neoaphidis and an aphid predator and parasitoid at the population scale

Baverstock, J., Clark, S. J., Alderson, P. G. and Pell, J. K. 2009. Intraguild interactions between the entomopathogenic fungus Pandora neoaphidis and an aphid predator and parasitoid at the population scale. Journal of Invertebrate Pathology. 102 (2), pp. 167-172.

Pollination biology of fruit-bearing hedgerow plants and the role of flower-visiting insects in fruit-set

Jacobs, J. H., Clark, S. J., Denholm, I., Goulson, D., Stoate, C. and Osborne, J. L. 2009. Pollination biology of fruit-bearing hedgerow plants and the role of flower-visiting insects in fruit-set. Annals of Botany. 104, pp. 1397-1404.

Using adult mosquitoes to transfer insecticides to Aedes aegypti larval habitats

Devine, G. J., Zamora-Perea, E., Killeen, G. F., Stancil, J. D., Clark, S. J. and Morrison, A. C. 2009. Using adult mosquitoes to transfer insecticides to Aedes aegypti larval habitats. Proceedings of the National Academy of Sciences of the United States of America. 106, pp. 11530-11534.

Identification of human-derived volatile chemicals that interfere with attraction of the Scottish biting midge and their potential use as repellents

Logan, J. G., Seal, N. J., Cook, J. I., Stanczyk, N. M., Birkett, M. A., Clark, S. J., Gezan, S. A., Wadhams, L. J., Pickett, J. A. and Mordue (Luntz), A. J. 2009. Identification of human-derived volatile chemicals that interfere with attraction of the Scottish biting midge and their potential use as repellents. Journal of Medical Entomology. 46 (2), pp. 208-219.

A novel, integrated approach to assessing social, economic and environmental implications of changing rural land-use: a case study of perennial biomass crops

Haughton, A. J., Bond, A. J., Lovett, A. A., Dockerty, T., Sunnenberg, G., Clark, S. J., Bohan, D. A., Sage, R. B., Mallott, M. D., Mallott, V. E., Cunningham, M. D., Riche, A. B., Shield, I. F., Finch, J. W., Turner, M. M. and Karp, A. 2009. A novel, integrated approach to assessing social, economic and environmental implications of changing rural land-use: a case study of perennial biomass crops. Journal of Applied Ecology. 46 (2), pp. 315-322.

Oilseed rape crop ecology: optimising crop husbandry for conservation biological control and greater biodiversity. Final report on DEFRA project AR0316.

Ferguson, A. W., Williams, I. H., Cook, S. M., Clark, S. J., Frearson, D. J. T., Holdgate, R., Isger, E. A., Mason, N. S., Watts, N. P. and Todd, A. 2008. Oilseed rape crop ecology: optimising crop husbandry for conservation biological control and greater biodiversity. Final report on DEFRA project AR0316. Department for Environment, Food & Rural Affairs (DEFRA).

Phenologies and diel periodicities of within-crop flight by pests and parasitoids in oilseed rape

Ferguson, A. W., Holdgate, R., Mason, N. S., Clark, S. J. and Williams, I. H. 2008. Phenologies and diel periodicities of within-crop flight by pests and parasitoids in oilseed rape. Abstracts IOBC-WPRS, OILB-SROP, Working Group on Integrated Control in Oilseed Crops, Paris, 29 September - 1 October 2008 . pp. 16

Transmission of Pandora neoaphidis in the presence of co-occurring arthropods

Baverstock, J., Baverstock, K. E., Clark, S. J. and Pell, J. K. 2008. Transmission of Pandora neoaphidis in the presence of co-occurring arthropods. Abstracts 41st Annual Meeting of the Society for Invertebrate Pathology, Warwick, 3-7 August 2008 . pp. 67

Effect of temperature on the in vitro radial growth of Zoophthora radicans and Pandora blunckii , two co-occurring fungal pathogens of the diamondback moth Plutella xylostella

Guzman-Franco, A. W., Clark, S. J., Alderson, P. G. and Pell, J. K. 2008. Effect of temperature on the in vitro radial growth of Zoophthora radicans and Pandora blunckii , two co-occurring fungal pathogens of the diamondback moth Plutella xylostella. BioControl. 53, pp. 501-516.

Transmission of Pandora neoaphidis in the presence of co-occurring arthropods

Baverstock, J., Baverstock, K. E., Clark, S. J. and Pell, J. K. 2008. Transmission of Pandora neoaphidis in the presence of co-occurring arthropods. Journal of Invertebrate Pathology. 98 (3), pp. 356-359.

Weed and invertebrate community compositions in arable farmland

Smith, V., Bohan, D. A., Clark, S. J., Haughton, A. J., Bell, J. R. and Heard, M. S. 2008. Weed and invertebrate community compositions in arable farmland. Arthropod-Plant Interactions. 2, pp. 21-30.

Intraguild predation of the aphid pathogenic fungus Pandora neoaphidis by the invasive coccinellid Harmonia axyridis

Roy, H. E., Baverstock, J., Ware, R. L., Clark, S. J., Majerus, M. E. N., Baverstock, K. E. and Pell, J. K. 2008. Intraguild predation of the aphid pathogenic fungus Pandora neoaphidis by the invasive coccinellid Harmonia axyridis. Ecological Entomology. 33 (2), pp. 175-182.

Identification of human-derived volatile chemicals that interfere with attraction of Aedes aegypti mosquitoes

Logan, J. G., Birkett, M. A., Clark, S. J., Powers, S. J., Seal, N. J., Wadhams, L. J., Mordue (Luntz), A. J. and Pickett, J. A. 2008. Identification of human-derived volatile chemicals that interfere with attraction of Aedes aegypti mosquitoes. Journal of Chemical Ecology. 34, pp. 308-322.

National-scale metacommunity dynamics of carabid beetles in UK farmland

Brooks, D. R., Perry, J. N., Clark, S. J., Heard, M. S., Firbank, L. G., Holdgate, R., Mason, N. S., Shortall, C. R., Skellern, M. P. and Woiwod, I. P. 2008. National-scale metacommunity dynamics of carabid beetles in UK farmland. Journal of Animal Ecology. 77 (2), pp. 265-274.

Effect of seasonal abiotic conditions and field margin habitat on the activity of Pandora neoaphidis inoculum on soil

Baverstock, J., Clark, S. J. and Pell, J. K. 2008. Effect of seasonal abiotic conditions and field margin habitat on the activity of Pandora neoaphidis inoculum on soil. Journal of Invertebrate Pathology. 97, pp. 282-290.

Movement of transgenic plant-expressed Bt Cry1Ac proteins through high trophic levels

Wei, W., Schuler, T. H., Clark, S. J., Stewart, C. N. Jr and Poppy, G. M. 2008. Movement of transgenic plant-expressed Bt Cry1Ac proteins through high trophic levels. Journal of Applied Entomology. 132 (1), pp. 1-11.

The implications of genetically modified herbicide-tolerant crops for UK farmland biodiversity: a summary of the results of the Farm Scale Evaluations project

Brooks, D. R., Firbank, L. G., Bohan, D. A., Champion, G. T., Clark, S. J., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M. S., May, M. J., Osborne, J. L., Perry, J. N., Rothery, P., Roy, D. B., Scott, R. J., Squire, G. R. and Woiwod, I. P. 2007. The implications of genetically modified herbicide-tolerant crops for UK farmland biodiversity: a summary of the results of the Farm Scale Evaluations project. Proceedings Open Seminar on the Cultivation of Genetically Modified Crops and Evaluation of Ecological Effects, Tokyo, 3 November 2007 . NIAES, Tsukuba. pp. 29-52

Intraguild predation of the aphid pathogenic fungus Pandora neoaphidis by the invasive coccinellid Harmonia axyridis

Baverstock, J., Roy, H. E., Ware, R. L., Clark, S. J., Majerus, M. E. N., Baverstock, K. E. and Pell, J. K. 2007. Intraguild predation of the aphid pathogenic fungus Pandora neoaphidis by the invasive coccinellid Harmonia axyridis. Abstracts Royal Entomological Society National Meeting (Ento 07), Edinburgh, 16-18 July 2007 . pp. 47

Non-inversion tillage to conserve functional biodiversity for biocontrol of oilseed rape pests

Ferguson, A. W., Holdgate, R., Mason, N. S., Clark, S. J. and Williams, I. H. 2007. Non-inversion tillage to conserve functional biodiversity for biocontrol of oilseed rape pests. Proceedings 16th International Plant Protection Congress, Glasgow, 15-18 October 2007 . pp. 818-819

The influence of tillage on biocontrol agents of oilseed rape pests

Ferguson, A. W., Holdgate, R., Mason, N. S., Clark, S. J. and Williams, I. H. 2007. The influence of tillage on biocontrol agents of oilseed rape pests. Abstracts Royal Entomological Society National Meeting (Ento 07), Edinburgh, 16-18 July 2007 . pp. 24

The effect [of] host plant characters on parasitism of inflorescence pests of oilseed rape

Ferguson, A. W., Frearson, D. J. T., Mason, N. S., Todd, A. D., Clark, S. J. and Williams, I. H. 2007. The effect [of] host plant characters on parasitism of inflorescence pests of oilseed rape. Abstracts Royal Entomological Society National Meeting (Ento 07), Edinburgh, 16-18 July 2007 . pp. 18

Ecotypes of the model legume Lotus japonicus vary in their interaction phenotypes with the root-knot nematode Meloidogyne incognita

Cabrera Poch, H. L., Manzanilla-Lopez, R. H. and Clark, S. J. 2007. Ecotypes of the model legume Lotus japonicus vary in their interaction phenotypes with the root-knot nematode Meloidogyne incognita. Annals of Botany. 99, pp. 1223-1229.

Nematicidal effects of cysteine proteinases against sedentary plant parastic nematodes

Stepek, G., Curtis, R. H. C., Kerry, B. R., Shewry, P. R., Clark, S. J., Lowe, A. E., Duce, I. R., Buttle, D. J. and Behnke, J. M. 2007. Nematicidal effects of cysteine proteinases against sedentary plant parastic nematodes. Parasitology. 134, pp. 1831-1838.

Environmental change and the phenology of European aphids

Harrington, R., Clark, S. J., Welham, S. J., Verrier, P. J., Denholm, C. H., Hulle, M., Maurice, D., Rounsevell, M. D., Cocu, N. and European Union Examine Consortium 2007. Environmental change and the phenology of European aphids. Global Change Biology. 13 (8), pp. 1550-1564.

Farm Scale Evaluations of herbicide-tolerant crops: assessment of within-field variation and sampling methodology for arable weeds

Clark, S. J., Rothery, P., Perry, J. N. and Heard, M. S. 2007. Farm Scale Evaluations of herbicide-tolerant crops: assessment of within-field variation and sampling methodology for arable weeds. Weed Research. 47 (2), pp. 157-163.

Statistical models to evaluate invertebrate-plant trophic interactions in arable systems

Bohan, D. A., Hawes, C., Haughton, A. J., Denholm, I., Champion, G. T., Perry, J. N. and Clark, S. J. 2007. Statistical models to evaluate invertebrate-plant trophic interactions in arable systems. Bulletin of Entomological Research. 97, pp. 265-280.

Influence of host plant on susceptibility of the aphid Acyrthosiphon pisum (Hemiptera: Aphididae) to the fungal pathogen Pandora neoaphidis (Zygomycetes: Entomophthorales)

Tkaczuk, C., Shah, P. A., Clark, S. J. and Pell, J. K. 2007. Influence of host plant on susceptibility of the aphid Acyrthosiphon pisum (Hemiptera: Aphididae) to the fungal pathogen Pandora neoaphidis (Zygomycetes: Entomophthorales). European Journal of Entomology. 104, pp. 205-210.

Response of the aphid parasitoid Aphidius funebris to volatiles from undamaged and aphid-infested Centaurea nigra

Pareja, M., Moraes, M. C. B., Clark, S. J., Birkett, M. A. and Powell, W. 2007. Response of the aphid parasitoid Aphidius funebris to volatiles from undamaged and aphid-infested Centaurea nigra. Journal of Chemical Ecology. 33 (April), pp. 695-710.

Honey bees can disseminate a microbial control agent to more than one inflorescence pest of oilseed rape

Carreck, N. L., Butt, T. M., Clark, S. J., Ibrahim, L., Isger, E. A., Pell, J. K. and Williams, I. H. 2007. Honey bees can disseminate a microbial control agent to more than one inflorescence pest of oilseed rape. Biocontrol Science and Technology. 17, pp. 179-191.

The effect of soil tillage on summer predator activity in a winter oilseed rape crop

Mason, N. S., Ferguson, A. W., Holdgate, R., Clark, S. J. and Williams, I. H. 2006. The effect of soil tillage on summer predator activity in a winter oilseed rape crop. Proceedings International Symposium on Integrated Pest Management, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

The diel periodicity of within-crop flight by key parasitoids of oilseed rape pests

Holdgate, R., Ferguson, A. W., Mason, N. S., Clark, S. J. and Williams, I. H. 2006. The diel periodicity of within-crop flight by key parasitoids of oilseed rape pests. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Effects of successive seasons of genetically modified herbicide-tolerant maize cropping on weeds and invertebrates

Heard, M. S., Clark, S. J., Rothery, P., Perry, J. N., Bohan, D. A., Brooks, D. R., Champion, G. T., Dewar, A. M., Hawes, C., Haughton, A. J., May, M. J., Scott, R. J., Stuart, R. S., Squire, G. R. and Firbank, L. G. 2006. Effects of successive seasons of genetically modified herbicide-tolerant maize cropping on weeds and invertebrates. Annals of Applied Biology. 149 (3), pp. 249-254.

Issues concerning the design and analysis of comparative field experiments

Welham, S. J. and Clark, S. J. 2006. Issues concerning the design and analysis of comparative field experiments. Outlooks on Pest Management. 17, pp. 175-180.

Weed seed resources for birds in fields with contrasting conventional and genetically modified herbicide-tolerant crops

Gibbons, D. W., Bohan, D. A., Rothery, P., Stuart, R. C., Haughton, A. J., Scott, R. J., Wilson, J. D., Perry, J. N., Clark, S. J., Dawson, R. J. G. and Firbank, L. G. 2006. Weed seed resources for birds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. Proceedings of the Royal Society of London Series B Biological Sciences. 273, pp. 1921-1928.

Bee-mediated infection of inflorescence pests of oilseed rape by the entomopathogenic fungus Metarhizium anisopliae

Williams, I. H., Butt, T. M., Carreck, N. L., Clark, S. J., Ibrahim, L., Isger, E. A. and Pell, J. K. 2006. Bee-mediated infection of inflorescence pests of oilseed rape by the entomopathogenic fungus Metarhizium anisopliae. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Long-term trends in aerial insect populations. Final report to English Nature

Shortall, C. R., Harrington, R., Hall, M. J. and Clark, S. J. 2006. Long-term trends in aerial insect populations. Final report to English Nature.

Effects of genetically modified herbicide-tolerant cropping systems on weed seedbanks in two years of following crops

Firbank, L. G., Rothery, P., May, M. J., Clark, S. J., Scott, R. J., Stuart, R. C., Boffey, C. W. H., Brooks, D. R., Champion, G. T., Haughton, A. J., Hawes, C., Heard, M. S., Dewar, A. M., Perry, J. N. and Squire, G. R. 2006. Effects of genetically modified herbicide-tolerant cropping systems on weed seedbanks in two years of following crops. Biology Letters. 2, pp. 140-143.

Farm Scale Evaluations of spring-sown genetically modified herbicide-tolerant crops: a statistical assessment

Clark, S. J., Rothery, P. and Perry, J. N. 2006. Farm Scale Evaluations of spring-sown genetically modified herbicide-tolerant crops: a statistical assessment. Proceedings of the Royal Society of London Series B Biological Sciences. 272, pp. 237-243.

Effect of fungal infection on the reproductive potential of aphids and their progeny

Baverstock, J., Roy, H. E., Clark, S. J., Alderson, P. G. and Pell, J. K. 2006. Effect of fungal infection on the reproductive potential of aphids and their progeny. Journal of Invertebrate Pathology. 91, pp. 136-139.

Age-related increase in levels of insecticidal protein in the progenies of transgenic oilseed rape and its efficacy against a susceptible strain of diamondback moth

Wei, W., Schuler, T. H., Clark, S. J., Stewart, C. N. and Poppy, G. M. 2005. Age-related increase in levels of insecticidal protein in the progenies of transgenic oilseed rape and its efficacy against a susceptible strain of diamondback moth. Annals of Applied Biology. 147 (3), pp. 227-234.

Wheat containing snowdrop lectin (GNA) does not affect infection of the cereal aphid Metopolophium dirhodum by the fungal natural enemy Pandora neoaphidis

Shah, P. A., Gatehouse, A. M. R., Clark, S. J. and Pell, J. K. 2005. Wheat containing snowdrop lectin (GNA) does not affect infection of the cereal aphid Metopolophium dirhodum by the fungal natural enemy Pandora neoaphidis. Transgenic Research. 14, pp. 473-476.

Invertebrate biodiversity in maize following withdrawal of triazine herbicides

Brooks, D. R., Clark, S. J., Perry, J. N., Bohan, D. A., Champion, G. T., Firbank, L. G., Haughton, A. J., Hawes, C., Heard, M. S. and Woiwod, I. P. 2005. Invertebrate biodiversity in maize following withdrawal of triazine herbicides. Proceedings of the Royal Society of London Series B Biological Sciences. 272, pp. 1497-1502.

Laboratory studies of the effects of reduced prey choice caused by Bt plants on a predatory insect

Schuler, T. H., Clark, A. J., Clark, S. J., Poppy, G. M., Stewart, C. N. Jr and Denholm, I. 2005. Laboratory studies of the effects of reduced prey choice caused by Bt plants on a predatory insect. Bulletin of Entomological Research. 95, pp. 243-247.

Effects on weed and invertebrate abundance and diversity of herbicide management in genetically modified herbicide-tolerant winter-sown oilseed rape

Bohan, D. A., Boffey, C. W. H., Brooks, D. R., Clark, S. J., Dewar, A. M., Firbank, L. G., Haughton, A. J., Hawes, C., Heard, M. S., May, M. J., Osborne, J. L., Perry, J. N., Rothery, P., Roy, D. B., Scott, R. J., Squire, G. R., Woiwod, I. P. and Champion, G. T. 2005. Effects on weed and invertebrate abundance and diversity of herbicide management in genetically modified herbicide-tolerant winter-sown oilseed rape. Proceedings of the Royal Society of London Series B Biological Sciences. 272, pp. 463-474.

Effect of a turnip rape (Brassica rapa ) trap crop on stem-mining pests and their parasitoids in winter oilseed rape (Brassica napus )

Barari, H., Cook, S. M., Clark, S. J. and Williams, I. H. 2005. Effect of a turnip rape (Brassica rapa ) trap crop on stem-mining pests and their parasitoids in winter oilseed rape (Brassica napus ). BioControl. 50, pp. 69-86.

Conservation biological control with the fungal pathogen Pandora neoaphidis : implications of aphid species, host plant and predator foraging

Ekesi, S., Shah, P. A., Clark, S. J. and Pell, J. K. 2005. Conservation biological control with the fungal pathogen Pandora neoaphidis : implications of aphid species, host plant and predator foraging. Agricultural and Forest Entomology. 7 (1), pp. 21-30.

Interactions between Pandora blunckii and Zoophthora radicans isolates in Plutella xylostella populations

Guzman-Franco, A., Clark, S. J., Alderson, P. G. and Pell, J. K. 2004. Interactions between Pandora blunckii and Zoophthora radicans isolates in Plutella xylostella populations. Abstracts 37th Annual Meeting of the Society for Invertebrate Pathology, Helsinki, 1-6 August 2004 . pp. 68

Evidence for gene flow and local clonal selection in field populations of the grain aphid (Sitobion avenae ) in Britain revealed using microsatellites

Llewellyn, K. S., Loxdale, H. D., Harrington, R., Clark, S. J. and Sunnucks, P. 2004. Evidence for gene flow and local clonal selection in field populations of the grain aphid (Sitobion avenae ) in Britain revealed using microsatellites. Heredity. 93, pp. 143-153.

Effect of fungal infection on the reproductive potential of aphids and their progeny

Baverstock, J., Roy, H. E., Clark, S. J. and Pell, J. K. 2004. Effect of fungal infection on the reproductive potential of aphids and their progeny. Abstracts 37th Annual Meeting of the Society for Invertebrate Pathology, Helsinki, 1-6 August 2004 . pp. 68

Research needs on the design, analysis and statistical powers of studies of the effects of agricultural practices on biodiversity

Perry, J. N., Clark, S. J. and Rothery, P. 2004. Research needs on the design, analysis and statistical powers of studies of the effects of agricultural practices on biodiversity. Watt, A. D., Kull, T., Scally, L., Tinch, R., Young, J. and Bolger, T. (ed.) Sustaining Livelihoods and Biodiversity - Attaining the 2010 Target in the European Biodiversity Strategy. Report of an Electronic Conference, May 2004 . pp. 36

Ban on triazine herbicides likely to reduce but not negate relative benefits of GMHT maize cropping

Perry, J. N., Firbank, L. G., Champion, G. T., Clark, S. J., Heard, M. S., May, M. J., Hawes, C., Squire, G. R., Rothery, P., Woiwod, I. P. and Pidgeon, J. D. 2004. Ban on triazine herbicides likely to reduce but not negate relative benefits of GMHT maize cropping. Nature. 428 (6980), pp. 313-316.

Effects of Bt plants on the development and survival of the parasitoid Cotesia plutellae (Hymenoptera: Braconidae) in susceptible and Bt-resistant larvae of the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae)

Schuler, T. H., Denholm, I., Clark, S. J., Stewart, C. N. and Poppy, G. M. 2004. Effects of Bt plants on the development and survival of the parasitoid Cotesia plutellae (Hymenoptera: Braconidae) in susceptible and Bt-resistant larvae of the diamondback moth Plutella xylostella (Lepidoptera: Plutellidae). Journal of Insect Physiology. 50, pp. 435-443.

Assessment of aphid host range and isolate variability in Pandora neoaphidis (Zygomycetes: Entomophthorales)

Shah, P. A., Clark, S. J. and Pell, J. K. 2004. Assessment of aphid host range and isolate variability in Pandora neoaphidis (Zygomycetes: Entomophthorales). Biological Control. 29, pp. 90-99.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 April 2003

Firbank, L. G., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Fairfax, C., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rossall, M., Rothery, P., Roy, D., Scott, R., Squire, G., Whittaker, D. and Woiwod, I. P. 2003. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 April 2003.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 November 2003

Firbank, L. G., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rothery, P., Roy, D., Scott, R., Squire, G. and Woiwod, I. P. 2003. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 November 2003.

Direct and indirect estimates of Pandora neoaphidis conidia in laboratory bioassays with aphids

Shah, P. A., Clark, S. J. and Pell, J. K. 2003. Direct and indirect estimates of Pandora neoaphidis conidia in laboratory bioassays with aphids. Journal of Invertebrate Pathology. 84, pp. 145-147.

Population dynamics of the large nettle aphid, Microlophium carnosum , and entomopathogenic fungi

Shah, P. A., Clark, S. J. and Pell, J. K. 2003. Population dynamics of the large nettle aphid, Microlophium carnosum , and entomopathogenic fungi. Abstracts British Ecological Society Annual Meeting, Manchester, 9-11 September 2003 .

The implications of spring-sown genetically modified herbicide-tolerant crops for farmland biodiversity: a commentary on the Farm Scale Evaluations of spring sown crops (DEFRA report)

Firbank, L. G., Perry, J. N., Squire, G. R., Bohan, D. A., Brooks, D. R., Champion, G. T., Clark, S. J., Daniels, R. E., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M. S., Hill, M. O., May, M. J., Osborne, J. L., Rothery, P., Roy, D. B., Scott, R. J. and Woiwod, I. P. 2003. The implications of spring-sown genetically modified herbicide-tolerant crops for farmland biodiversity: a commentary on the Farm Scale Evaluations of spring sown crops (DEFRA report).

Design of the farm-scale evaluations of genetically modified herbicide-tolerant crops

Rothery, P., Clark, S. J. and Perry, J. N. 2003. Design of the farm-scale evaluations of genetically modified herbicide-tolerant crops. Environmetrics. 14 (7), pp. 711-717.

Responses of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops

Hawes, C., Haughton, A. J., Osborne, J. L., Roy, D. B., Clark, S. J., Perry, J. N., Rothery, P., Bohan, D. A., Brooks, D. R., Champion, G. T., Dewar, A. M., Heard, M. S., Woiwod, I. P., Daniels, R. E., Young, M. W., Parish, A. M., Scott, R. J., Firbank, L. G. and Squire, G. R. 2003. Responses of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1899-1913.

Invertebrates and vegetation of field margins adjacent to crops subject to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops

Roy, D. B., Bohan, D. A., Haughton, A. J., Hill, M. O., Osborne, J. L., Clark, S. J., Perry, J. N., Rothery, P., Scott, R. J., Brooks, D. R., Champion, G. T., Hawes, C., Heard, M. S. and Firbank, L. G. 2003. Invertebrates and vegetation of field margins adjacent to crops subject to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1879-1898.

Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. II. Within-field epigeal and aerial arthropods

Haughton, A. J., Champion, G. T., Hawes, C., Heard, M. S., Brooks, D. R., Bohan, D. A., Clark, S. J., Dewar, A. M., Firbank, L. G., Osborne, J. L., Perry, J. N., Rothery, P., Roy, D. B., Scott, R. J., Woiwod, I. P., Birchall, C., Skellern, M. P., Walker, J. H., Baker, P., Browne, E. L., Dewar, A. J. G., Garner, B. H., Haylock, L. A., Horne, S. L., Mason, N. S., Sands, R. J. N. and Walker, M. J. 2003. Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. II. Within-field epigeal and aerial arthropods. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1863-1877.

Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. I. Soil-surface-active invertebrates

Brooks, D. R., Bohan, D. A., Champion, G. T., Haughton, A. J., Hawes, C., Heard, M. S., Clark, S. J., Dewar, A. M., Firbank, L. G., Perry, J. N., Rothery, P., Scott, R. J., Woiwod, I. P., Birchall, C., Skellern, M. P., Walker, J. H., Baker, P., Bell, D., Browne, E. L., Dewar, A. J. G., Fairfax, C. M., Garner, B. H., Haylock, L. A., Horne, S. L., Hulmes, S. E., Mason, N. S., Norton, L. R., Nuttall, P., Sands, R. J. N. and Walker, M. J. 2003. Invertebrate responses to the management of genetically modified herbicide-tolerant and conventional spring crops. I. Soil-surface-active invertebrates. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1847-1862.

Weeds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. II. Effects on individual species

Heard, M. S., Hawes, C., Champion, G. T., Clark, S. J., Firbank, L. G., Haughton, A. J., Parish, A. M., Perry, J. N., Rothery, P., Roy, D. B., Scott, R. J., Skellern, M. P., Squire, G. R. and Hill, M. O. 2003. Weeds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. II. Effects on individual species. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1833-1846.

Weeds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. I. Effects on abundance and diversity

Heard, M. S., Hawes, C., Champion, G. T., Clark, S. J., Firbank, L. G., Haughton, A. J., Parish, A. M., Perry, J. N., Rothery, P., Scott, R. J., Skellern, M. P., Squire, G. R. and Hill, M. O. 2003. Weeds in fields with contrasting conventional and genetically modified herbicide-tolerant crops. I. Effects on abundance and diversity. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1819-1832.

Crop management and agronomic context of the Farm Scale Evaluations of genetically modified herbicide-tolerant crops

Champion, G. T., May, M. J., Bennett, S., Brooks, D. R., Clark, S. J., Daniels, R. E., Firbank, L. G., Haughton, A. J., Hawes, C., Heard, M. S., Perry, J. N., Randle, Z., Rossall, M. J., Rothery, P., Skellern, M. P., Scott, R. J., Squire, G. R. and Thomas, M. R. 2003. Crop management and agronomic context of the Farm Scale Evaluations of genetically modified herbicide-tolerant crops. Philosophical Transactions of the Royal Society B-Biological Sciences. 358, pp. 1801-1818.

Tritrophic interactions between Pandora neoaphidis , three aphid species and different host plant resources

Shah, P. A., Clark, S. J. and Pell, J. K. 2003. Tritrophic interactions between Pandora neoaphidis , three aphid species and different host plant resources. Abstracts 36th Annual Meeting of the Society for Invertebrate Pathology, Burlington, 26-30 July 2003 . pp. 72

Ecological role of the large nettle aphid, Microlophium carnosum , as an early season source of Pandora neoaphidis

Shah, P. A., Clark, S. J. and Pell, J. K. 2003. Ecological role of the large nettle aphid, Microlophium carnosum , as an early season source of Pandora neoaphidis. Abstracts 36th Annual Meeting of the Society for Invertebrate Pathology, Burlington, 26-30 July 2003 . pp. 71-72

Impacts of environmental change on aphids throughout Europe

Harrington, R., Denholm, C. H., Verrier, P. J., Clark, S. J., Welham, S. J., Hulle, M., Maurice, D., Rounsevell, M., Cocu, N., Knight, J., Bell, N., Barbagallo, S., Basky, Z., Coceano, P. G., Derron, J., Katis, N., Lukasova, H., Marrkula, I., Mohar, J., Pickup, J., Rolot, J-L., Ruszkowska, M., Schliephake, E., Seco-Fernandez, M-V., Sigvald, R., Tsitsipis, J. and Ulber, B. 2003. Impacts of environmental change on aphids throughout Europe. Abstracts Integrated Biological Systems Conference, San Antonio, Texas, 14-16 April 2003 . pp. 39-40

Spatial distribution of pest insects in oilseed rape: implications for integrated pest management

Ferguson, A. W., Klukowski, Z., Walczak, B., Clark, S. J., Mugglestone, M. A., Perry, J. N. and Williams, I. H. 2003. Spatial distribution of pest insects in oilseed rape: implications for integrated pest management. Agriculture, Ecosystems & Environment. 95, pp. 509-521.

Design, analysis and statistical power of the Farm-Scale Evaluations of genetically modified herbicide-tolerant crops

Perry, J. N., Rothery, P., Clark, S. J., Heard, M. S. and Hawes, C. 2003. Design, analysis and statistical power of the Farm-Scale Evaluations of genetically modified herbicide-tolerant crops. Journal of Applied Ecology. 40 (1), pp. 17-31.

Laboratory evaluation of temperature effects on the germination and growth of entomopathogenic fungi and on their pathogenicity to two aphid species

Yeo, H., Pell, J. K., Alderson, P. G., Clark, S. J. and Pye, B. J. 2003. Laboratory evaluation of temperature effects on the germination and growth of entomopathogenic fungi and on their pathogenicity to two aphid species. Pest Management Science. 59 (2), pp. 156-165.

Migration and genetic structure of the grain aphid (Sitobion avenae ) in Britain related to climate and clonal fluctuation as revealed using microsatellites

Llewellyn, K. S., Loxdale, H. D., Harrington, R., Brookes, C. P., Clark, S. J. and Sunnucks, P. 2003. Migration and genetic structure of the grain aphid (Sitobion avenae ) in Britain related to climate and clonal fluctuation as revealed using microsatellites. Molecular Ecology. 12 (1), pp. 21-34.

Tritrophic choice experiments with Bt plants, the diamondback moth (Plutella xylostella ) and the parasitoid Cotesia plutellae

Schuler, T. H., Potting, R. P. J., Denholm, I., Clark, S. J., Clark, A. J., Stewart, C. N. and Poppy, G. M. 2003. Tritrophic choice experiments with Bt plants, the diamondback moth (Plutella xylostella ) and the parasitoid Cotesia plutellae. Transgenic Research. 12, pp. 351-361.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 27 March 2002

Firbank, L. G., Bennett, S., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Norton, L., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J., Whittaker, D. and Woiwod, I. P. 2002. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 27 March 2002.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 November 2002

Firbank, L. G., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Fairfax, C., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rossall, M., Rothery, P., Roy, D., Scott, R., Squire, G., Whittaker, D. and Woiwod, I. P. 2002. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 1 November 2002.

Examine(exploitation of aphis monitoring in europe): an EU thematic network for the study of global change impacts on aphid dynamics

Denholm, C. H., Barbagallo, S., Basky, Z., Bell, J. N. B., Clark, S. J., Coceano, P-G., Cocu, N., Colucci, R., Derron, J., Ferrara, V., Gotlin Euljak, T., Harrington, R., Hatala Zseller, I., Hulle, M., Katis, N., Knight, J. D., Limonta, L., Lukasova, H., Markkula, I., Maurice, D., Mohar, J., Pickup, J., Rolot, J-L., Rounsevell, M. D. A., Ruszkowska, M., Schleiphake, E., Seco-Fernandez, M. V., Sigvald, R., Verrier, P. J. and Welham, S. J. 2002. Examine(exploitation of aphis monitoring in europe): an EU thematic network for the study of global change impacts on aphid dynamics. Abstracts 7th European Congress of Entomology, Thessaloniki, 7-13 October 2002 . pp. 317

Laboratory bioassays to assess the pathogenicity of mitosporic fungi to Varroa destructor (Acari: Mesostigmata), an ectoparasitic mite of the honeybee, Apis mellifera

Shaw, K. E., Davidson, G., Clark, S. J., Ball, B. V., Pell, J. K., Chandler, D. and Sunderland, K. D. 2002. Laboratory bioassays to assess the pathogenicity of mitosporic fungi to Varroa destructor (Acari: Mesostigmata), an ectoparasitic mite of the honeybee, Apis mellifera. Biological Control. 24, pp. 266-276.

The variational expression of Bt proteins within transgenic canola and its movement through trophic levels

Wei, W., Schuler, T. H., Clark, S. J., Stewart, C. N. and Poppy, G. M. 2002. The variational expression of Bt proteins within transgenic canola and its movement through trophic levels. Abstracts 7th International Symposium on the Biosafety of Genetically Modified Organisms, Beijing, 10-16 October 2002 .

Design, analysis and power considerations of field-scale ecological assessments of genetically modified crops

Perry, J. N., Rothery, P., Clark, S. J., Heard, M. S. and Hawes, C. 2002. Design, analysis and power considerations of field-scale ecological assessments of genetically modified crops. Abstracts ESF Workshop on Ecological Concepts and Techniques to Assess the Impact of Genetically Modified Plants in Natural and Crop Ecosystems, Klarskovgard, 1-2 November 2002 . pp. 20

Spatial pattern in the distribution of pests and yield in an oilseed rape crop: implications for ICM

Ferguson, A. W., Perry, J. N., Williams, I. H., Klukowski, Z., Walczak, B., Clark, S. J. and Mugglestone, M. A. 2002. Spatial pattern in the distribution of pests and yield in an oilseed rape crop: implications for ICM. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2002 . pp. 659-664

Spatial patterns of insect pest distribution in an oilseed rape crop: relationships to plant growth and yield and significance for IPM

Ferguson, A. W., Klukowski, Z., Walczak, B., Clark, S. J., Mugglestone, M. A., Perry, J. N. and Williams, I. H. 2002. Spatial patterns of insect pest distribution in an oilseed rape crop: relationships to plant growth and yield and significance for IPM. Abstracts 7th European Congress of Entomology, Thessaloniki, 7-13 October 2002 . pp. 207

Spatial pattern and the relationship between pests and plant growth in a winter oilseed rape crop

Ferguson, A. W., Klukowski, Z., Walczak, B., Clark, S. J., Mugglestone, M. A., Perry, J. N. and Williams, I. H. 2002. Spatial pattern and the relationship between pests and plant growth in a winter oilseed rape crop. Abstracts 6th National Meeting of the Royal Entomological Society, Cardiff, 12-13 September 2002 . pp. 15-16

A tiered approach for evaluating Erynia neoaphidis isolates against seven aphid species

Shah, P. A., Clark, S. J. and Pell, J. K. 2002. A tiered approach for evaluating Erynia neoaphidis isolates against seven aphid species. Abstracts 35th Annual Meeting of the Society for Invertebrate Pathology, Foz do Iguassu, Brazil, 18-23 August 2002 . pp. 104

Design and analysis of farm-scale evaluations of genetically modified herbicide-tolerant crops

Rothery, P., Clark, S. J. and Perry, J. N. 2002. Design and analysis of farm-scale evaluations of genetically modified herbicide-tolerant crops. Proceedings 21st International Biometric Conference, Freiburg, 21-26 July 2002 . pp. 351-364

Bioassays to assess the pathogenicity of mitosporic fungi to Varroa destructor (sp. nov), an ectoparasitic mite of the honey bee, Apis mellifera

Shaw, K. E., Davidson, G., Clark, S. J., Ball, B. V., Pell, J. K., Chandler, D. and Sunderland, K. 2001. Bioassays to assess the pathogenicity of mitosporic fungi to Varroa destructor (sp. nov), an ectoparasitic mite of the honey bee, Apis mellifera. Abstracts 34th Annual Meeting of the Society for Invertebrate Pathology, Noordwijkerhout, 25-30 August 2001 .

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 31 January 2001

Firbank, L. G., Bater, J., Bennett, S., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Norton, L., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rossall, M., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J., Whittaker, D. and Woiwod, I. P. 2001. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 31 January 2001.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 11 October 2001

Firbank, L. G., Bennett, S., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., May, M. J., Norton, L., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J., Whittaker, D. and Woiwod, I. P. 2001. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 11 October 2001.

Comparison of the use of two nematode-trapping fungi in the control of Haemonchus contortus infective larvae in ovine faeces

Flores Crespo, J., Mendoza De Gives, P., Herrera Rodriguez, D., Liebano Hernandez, E., Vazquez Prats, V. and Clark, S. J. 2001. Comparison of the use of two nematode-trapping fungi in the control of Haemonchus contortus infective larvae in ovine faeces. International Journal of Nematology. 11, pp. 253-259.

Are fecundity and longevity of female Aphelinus abdominalis affected by development in GNA-dosed Macrosiphum euphorbiae?

Couty, A., Clark, S. J. and Poppy, G. M. 2001. Are fecundity and longevity of female Aphelinus abdominalis affected by development in GNA-dosed Macrosiphum euphorbiae? Physiological Entomology. 26 (4), pp. 287-293.

The effect of natural enemies on the spread of barley yellow dwarf virus (BYDV) by Rhopalosiphum padi (Hemiptera: Aphididae)

Smyrnioudis, I. N., Harrington, R., Clark, S. J. and Katis, N. 2001. The effect of natural enemies on the spread of barley yellow dwarf virus (BYDV) by Rhopalosiphum padi (Hemiptera: Aphididae). Bulletin of Entomological Research. 91, pp. 301-306.

Population-scale laboratory studies of the effect of transgenic plants on nontarget insects

Schuler, T. H., Denholm, I., Jouanin, L., Clark, S. J., Clark, A. J. and Poppy, G. M. 2001. Population-scale laboratory studies of the effect of transgenic plants on nontarget insects. Molecular Ecology. 10 (7), pp. 1845-1853.

Conidial discharge in the aphid pathogen Erynia neoaphidis

Hemmati, F., Pell, J. K., McCartney, H. A., Clark, S. J. and Deadman, M. L. 2001. Conidial discharge in the aphid pathogen Erynia neoaphidis. Mycological Research. 105 (6), pp. 715-722.

The effect of temperature on variation in transmission of a BYDV PAV-like isolate by clones of Rhopalosiphum padi and Sitobion avenae

Smyrnioudis, I. N., Harrington, R., Hall, M. J., Katis, N. and Clark, S. J. 2001. The effect of temperature on variation in transmission of a BYDV PAV-like isolate by clones of Rhopalosiphum padi and Sitobion avenae. European Journal of Plant Pathology. 107, pp. 167-173.

Direct and indirect sublethal effects of Galanthus nivalis agglutinin (GNA) on the development of a potato-aphid parasitoid, Aphelinus abdominalis (Hymenoptera: Aphelinidae)

Couty, A., De La Vina, G., Clark, S. J., Kaiser, L., Pham-Delegue, M-H. and Poppy, G. M. 2001. Direct and indirect sublethal effects of Galanthus nivalis agglutinin (GNA) on the development of a potato-aphid parasitoid, Aphelinus abdominalis (Hymenoptera: Aphelinidae). Journal of Insect Physiology. 47 (6), pp. 553-561.

Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 20 October 2000

Firbank, L. G., Bater, J., Bennett, S., Brooks, D., Bohan, D. A., Champion, G. T., Clark, S. J., Daniels, R., Dewar, A. M., Glen, D. M., Haughton, A. J., Hawes, C., Heard, M., Hill, M., Maudsley, M. J., Marshall, E. J. P., May, M. J., Norton, L., Osborne, J. L., Pidgeon, J. D., Perry, J. N., Rossall, M., Rothery, P., Roy, D., Scott, R., Squire, G., Watkins, J., Whittaker, D. and Woiwod, I. P. 2000. Farm scale evaluations of GM crops: effects of the management of field scale releases of genetically-modified herbicide-tolerant crops on the abundance and diversity of farmland wildlife. Interim report 20 October 2000. Department for Environment, Food & Rural Affairs (DEFRA).

The effect of drought stress and temperature on spread of barley yellow dwarf virus (BYDV)

Smyrnioudis, I. N., Harrington, R., Katis, N. and Clark, S. J. 2000. The effect of drought stress and temperature on spread of barley yellow dwarf virus (BYDV). Agricultural and Forest Entomology. 2, pp. 161-166.

The spatio-temporal distribution of adult Ceutorhynchus assimilis in a crop of winter oilseed rape in relation to the distribution of their larvae and that of the parasitoid Trichomalus perfectus

Ferguson, A. W., Klukowski, Z., Walczak, B., Perry, J. N., Mugglestone, M. A., Clark, S. J. and Williams, I. H. 2000. The spatio-temporal distribution of adult Ceutorhynchus assimilis in a crop of winter oilseed rape in relation to the distribution of their larvae and that of the parasitoid Trichomalus perfectus. Entomologia Experimentalis et Applicata. 95 (2), pp. 161-171.

Generalized estimating equations for spatially referenced binary data

Mugglestone, M. A., Kenward, J. G. and Clark, S. J. 2000. Generalized estimating equations for spatially referenced binary data. Proceedings Workshop on Correlated Data Modelling: the Estimating Function Approach, Trieste, Italy, 22-23 October 1999 .

Spatio-temporal associations in beetle and virus count data

Korie, S., Perry, J. N., Mugglestone, M. A., Clark, S. J., Thomas, C. F. G. and Mohamad Roff, M. N. 2000. Spatio-temporal associations in beetle and virus count data. Journal of Agricultural Biological and Environmental Statistics. 5 (2), pp. 214-239.

Spatio-temporal dynamics of insect distributions in oilseed rape

Williams, I. H., Murchie, A. K., Ferguson, A. W., Klukowski, Z., Perry, J. N., Walczak, B., Mugglestone, M. A. and Clark, S. J. 1999. Spatio-temporal dynamics of insect distributions in oilseed rape. Proceedings 10th International Rapeseed Congress: New Horizons for an Old Crop, Canberra, 26-29 September 1999. (CD-ROM) .

A landscape-scale study of bumble bee foraging range and constancy, using harmonic radar

Osborne, J. L., Clark, S. J., Morris, R. J., Williams, I. H., Riley, J. R., Smith, A. D., Reynolds, D. R. and Edwards, A. S. 1999. A landscape-scale study of bumble bee foraging range and constancy, using harmonic radar. Journal of Applied Ecology. 36 (4), pp. 519-533.

The germination of oil-formulated conidia of the insect pathogen Metarhizium anisopliae

Ibrahim, L., Butt, T. M., Beckett, A. and Clark, S. J. 1999. The germination of oil-formulated conidia of the insect pathogen Metarhizium anisopliae. Mycological Research. 103 (7), pp. 901-907.

Perception of oviposition-deterring pheromone by cabbage seed weevil (Ceutorhynchus assimilis )

Ferguson, A. W., Ziesmann, J., Blight, M. M., Williams, I. H., Wadhams, L. J., Clark, S. J., Woodcock, C. M. and Mudd, A. 1999. Perception of oviposition-deterring pheromone by cabbage seed weevil (Ceutorhynchus assimilis ). Journal of Chemical Ecology. 25, pp. 1655-1670.

Identification of the gland secreting oviposition-deterring pheromone in the cabbage seed weevil, Ceutorhynchus assimilis, and the mechanism of pheromone deposition

Ferguson, A. W., Solinas, M., Ziesmann, J., Isidoro, N., Williams, I. H., Scubla, P., Mudd, A., Clark, S. J. and Wadhams, L. J. 1999. Identification of the gland secreting oviposition-deterring pheromone in the cabbage seed weevil, Ceutorhynchus assimilis, and the mechanism of pheromone deposition. Journal of Insect Physiology. 45 (7), pp. 687-699.

Predatory behaviour of trapping fungi against srf mutants of Caenorhabditis elegans and different plant and animal parasitic nematodes

Mendoza De Gives, P., Davies, K. G., Clark, S. J. and Behnke, J. M. 1999. Predatory behaviour of trapping fungi against srf mutants of Caenorhabditis elegans and different plant and animal parasitic nematodes. Parasitology. 119, pp. 95-104.

Use of lichen secondary metabolites as antifeedants to protect higher plants from damage caused by slug feeding

Clark, S. J., Henderson, I. F., Hill, D. J. and Martin, A. P. 1999. Use of lichen secondary metabolites as antifeedants to protect higher plants from damage caused by slug feeding. Annals of Applied Biology. 134 (1), pp. 101-108.

Rejoinder [Analyzing maps of dispersal around a single focus]

Korie, S., Clark, S. J., Perry, J. N., Mugglestone, M. A., Bartlett, P. W., Marshall, E. J. P. and Mann, J. A. 1998. Rejoinder [Analyzing maps of dispersal around a single focus]. Environmental and Ecological Statistics. 5 (4), pp. 349-351.

Analyzing maps of dispersal around a single focus

Korie, S., Clark, S. J., Perry, J. N., Mugglestone, M. A., Bartlett, P. W., Marshall, E. J. P. and Mann, J. A. 1998. Analyzing maps of dispersal around a single focus. Environmental and Ecological Statistics. 5 (4), pp. 317-344.

Unseasonal male aphids

Taylor, M. S., Harrington, R. and Clark, S. J. 1998. Unseasonal male aphids. Dixon, A. F. G. and Nietonafria, J. M. (ed.) Aphids in natural and managed ecosystems . Universidad de Leon, Leon. pp. 287-293

Implications of predator foraging on aphid pathogen dynamics

Roy, H. E., Pell, J. K., Clark, S. J. and Alderson, P. G. 1998. Implications of predator foraging on aphid pathogen dynamics. Journal of Invertebrate Pathology. 71, pp. 236-247.

The effect of plant growth and topography on the acquisition of conidia of the insect pathogen Metarhizium anisopliae by larvae of Phaedon cochleariae

Inyang, E. N., Butt, T. M., Ibrahim, L., Clark, S. J., Pye, B. T., Beckett, A. and Archer, S. 1998. The effect of plant growth and topography on the acquisition of conidia of the insect pathogen Metarhizium anisopliae by larvae of Phaedon cochleariae. Mycological Research. 102 (11), pp. 1365-1374.

Use of a novel sporulation monitor to quantify the effects of formulation and storage on conidiation by dried mycelia of the entomopathogenic fungus Zoophthora radicans

Pell, J. K., Barker, A. D. P., Clark, S. J., Wilding, N. and Alderson, P. G. 1998. Use of a novel sporulation monitor to quantify the effects of formulation and storage on conidiation by dried mycelia of the entomopathogenic fungus Zoophthora radicans. Biocontrol Science and Technology. 8, pp. 13-21.

Genetic variability within and between English populations of the damson-hop aphid Phorodon humili (Hemiptera: Aphididae) with special reference to esterases associated with insecticide resistance

Loxdale, H. D., Brookes, C. P., Wynne, I. R. and Clark, S. J. 1998. Genetic variability within and between English populations of the damson-hop aphid Phorodon humili (Hemiptera: Aphididae) with special reference to esterases associated with insecticide resistance. Bulletin of Entomological Research. 88 (5), pp. 513-526.

Temperature change and complex dynamics

Zhou, X-L, Perry, J. N., Woiwod, I. P., Harrington, R., Bale, J. S. and Clark, S. J. 1997. Temperature change and complex dynamics. Oecologia. 112 (4), pp. 543-550.

Influence of pesticide use on the natural occurrence of entomopathogenic fungi in arable soils in the U.K.: field and laboratory comparisons

Mietkiewski, R. T., Pell, J. K. and Clark, S. J. 1997. Influence of pesticide use on the natural occurrence of entomopathogenic fungi in arable soils in the U.K.: field and laboratory comparisons. Biocontrol Science and Technology. 7, pp. 565-575.

Evidence for a possible fitness trade-off between insecticide resistance and the low temperature movement that is essential for survival of UK populations of Myzus persicae (Hemiptera: Aphididae)

Foster, S. P., Harrington, R., Devonshire, A. L., Denholm, I., Clark, S. J. and Mugglestone, M. A. 1997. Evidence for a possible fitness trade-off between insecticide resistance and the low temperature movement that is essential for survival of UK populations of Myzus persicae (Hemiptera: Aphididae). Bulletin of Entomological Research. 87, pp. 573-579.

Extraction, isolation and composition of oviposition-deterring secretion of cabbage seed weevil Ceutorhynchus assimilis

Mudd, A., Ferguson, A. W., Blight, M. M., Williams, I. H., Scubla, P., Solinas, M. and Clark, S. J. 1997. Extraction, isolation and composition of oviposition-deterring secretion of cabbage seed weevil Ceutorhynchus assimilis. Journal of Chemical Ecology. 23, pp. 2227-2240.

A bioassay for screening materials influencing feeding in the field slug Deroceras reticulatum (Müller) (Mollusca: Pulmonata)

Clark, S. J., Dodds, C. J., Henderson, I. F. and Martin, A. P. 1997. A bioassay for screening materials influencing feeding in the field slug Deroceras reticulatum (Müller) (Mollusca: Pulmonata). Annals of Applied Biology. 130 (2), pp. 379-385.

Detecting chaotic dynamics of insect populations from long-term survey data

Zhou, X-L, Perry, J. N., Woiwod, I. P., Harrington, R., Bale, J. S. and Clark, S. J. 1997. Detecting chaotic dynamics of insect populations from long-term survey data. Ecological Entomology. 22 (2), pp. 231-241.

Interactions between two aphid natural enemies, the entomopathogenic fungus Erynia neoaphidis Remaudiere & Hennebert (Zygomycetes: Entomophthorales) and the predatory beetle Coccinella septempunctata L. (Coleoptera: Coccinellidae)

Pell, J. K., Pluke, R., Clark, S. J., Kenward, M. G. and Alderson, P. G. 1997. Interactions between two aphid natural enemies, the entomopathogenic fungus Erynia neoaphidis Remaudiere & Hennebert (Zygomycetes: Entomophthorales) and the predatory beetle Coccinella septempunctata L. (Coleoptera: Coccinellidae). Journal of Invertebrate Pathology. 69, pp. 261-268.

Nectar and flower production in Vicia faba L. (field bean) at ambient and elevated carbon dioxide

Osborne, J. L., Awmack, C. S., Clark, S. J., Williams, I. H. and Mills, V. C. 1997. Nectar and flower production in Vicia faba L. (field bean) at ambient and elevated carbon dioxide. Apidologie. 28, pp. 43-55.

The impact of climate change on aphid population dynamics and phenology

Harrington, R., Perry, J. N., Woiwod, I. P., Zhou, X-L, Clark, S. J., Bale, J. S., Howling, G. G., Lisle, L. and Mair, J. 1996. The impact of climate change on aphid population dynamics and phenology. Proceedings BBSRC Conference on Biological Adaptation to Global Environmental Change, Lancaster, 9-11 September 1996 .

Nectar and flower production in Vicia faba L. (field bean) at elevated carbon dioxide

Osborne, J. L., Awmack, C. S., Clark, S. J., Williams, I. H. and Mills, V. C. 1996. Nectar and flower production in Vicia faba L. (field bean) at elevated carbon dioxide. Abstracts 7th International Pollination Symposium, Lethbridge, Canada, 23-28 June 1996 .

Estimating Taylor's power law parameters for weeds and the effect of spatial scale

Clark, S. J., Perry, J. N. and Marshall, E. J. P. 1996. Estimating Taylor's power law parameters for weeds and the effect of spatial scale. Weed Research. 36 (5), pp. 405-417.

The effect of temperature and inoculation access period on the transmission of barley yellow dwarf virus by Rhopalosiphum padi (L.) and Sitobion avenae (F.)

Lowles, A. J., Tatchell, G. M., Harrington, R. and Clark, S. J. 1996. The effect of temperature and inoculation access period on the transmission of barley yellow dwarf virus by Rhopalosiphum padi (L.) and Sitobion avenae (F.). Annals of Applied Biology. 128 (1), pp. 45-53.

Feeding of the cabbage stem flea beetle Psylliodes chrysocephala on high and low glucosinolate cultivars of oilseed rape

Bartlet, E., Mithen, R. and Clark, S. J. 1996. Feeding of the cabbage stem flea beetle Psylliodes chrysocephala on high and low glucosinolate cultivars of oilseed rape. Entomologia Experimentalis et Applicata. 80 (1), pp. 87-89.

Impact of climate change on aphid flight phenology

Zhou, X-L, Harrington, R., Woiwod, I. P., Perry, J. N., Clark, S. J. and Bale, J. S. 1996. Impact of climate change on aphid flight phenology. Implications of "Global Environmental Change" for Crops in Europe. Aspects of Applied Biology 45 . pp. 299-305

Effect of pirimicarb on the foraging behaviour of Diaeretiella rapae (Hymenoptera: Braconidae) on host-free and infested oilseed rape plants

Umoru, P. A., Powell, W. and Clark, S. J. 1996. Effect of pirimicarb on the foraging behaviour of Diaeretiella rapae (Hymenoptera: Braconidae) on host-free and infested oilseed rape plants. Bulletin of Entomological Research. 86, pp. 193-201.

Interactions between the cabbage seed weevil (Ceutorhynchus assimilis Payk.) and the brassica pod midge (Dasineura brassicae Winn.) infesting oilseed rape pods

Ferguson, A. W., Kenward, M. G., Williams, I. H., Clark, S. J., Kelm, M. and Dudzic, A. 1995. Interactions between the cabbage seed weevil (Ceutorhynchus assimilis Payk.) and the brassica pod midge (Dasineura brassicae Winn.) infesting oilseed rape pods. Rapeseed Today and Tomorrow. Proceedings 9th International Rapeseed Congress, Cambridge, 4-7 July 1995 . pp. 679-681

Influence of temperature on germination of primary and secondary conidia of Erynia neoaphidis (Zygomycetes: Entomophthorales)

Morgan, L. W., Boddy, L., Clark, S. J. and Wilding, N. 1995. Influence of temperature on germination of primary and secondary conidia of Erynia neoaphidis (Zygomycetes: Entomophthorales). Journal of Invertebrate Pathology. 65, pp. 132-138.

Effects of temperature on aphid phenology

Zhou, X-L, Harrington, R., Woiwod, I. P., Perry, J. N., Bale, J. S. and Clark, S. J. 1995. Effects of temperature on aphid phenology. Global Change Biology. 1 (4), pp. 303-313.

Movement of apterous Sitobion avenae (Homoptera:Aphididae) in response to leaf disturbances caused by wind and rain

Mann, J. A., Tatchell, G. M., Dupuch, M. J., Harrington, R., Clark, S. J. and McCartney, H. A. 1995. Movement of apterous Sitobion avenae (Homoptera:Aphididae) in response to leaf disturbances caused by wind and rain. Annals of Applied Biology. 126 (3), pp. 417-427.

Metal chelate molluscicides: the redistribution of iron diazaalkanolates from the gut lumen of the slug, Deroceras reticulatum (Muller) (Pulmonata: Limacidae)

Clark, S. J., Coward, N. P., Dawson, G. W., Henderson, I. F. and Martin, A. P. 1995. Metal chelate molluscicides: the redistribution of iron diazaalkanolates from the gut lumen of the slug, Deroceras reticulatum (Muller) (Pulmonata: Limacidae). Pesticide Science. 44 (4), pp. 381-388.

The germination behaviour of Metarhizium anisopliae on the surface of aphid and flea beetle cuticles

Butt, T. M., Ibrahim, L., Clark, S. J. and Beckett, A. 1995. The germination behaviour of Metarhizium anisopliae on the surface of aphid and flea beetle cuticles. Mycological Research. 99 (8), pp. 945-950.

Small sample estimation for Taylor's power law

Clark, S. J. and Perry, J. N. 1994. Small sample estimation for Taylor's power law. Journal of Environmental and Ecological Statistics. 1 (4), pp. 287-302.

Interaction between cabbage seed weevil (Ceutorhynchus assimilis payk.) and brassica pod midge (Dasineura brassicae Winn.) in oilseed rape pods (in Polish)

Kelm, M., Ferguson, A. W., Williams, I. H., Kenward, M. G. and Clark, S. J. 1994. Interaction between cabbage seed weevil (Ceutorhynchus assimilis payk.) and brassica pod midge (Dasineura brassicae Winn.) in oilseed rape pods (in Polish). Materialy XXXIV Sesji Naukowej Instytutu Ochrony Roslin, Poznan, 1994 . pp. 258-262

Pathogenicity of the entomogenous fungi Metarhizium anisopliae and Beauveria bassiana against crucifer pests and the honey bee

Butt, T. M., Ibrahim, L., Ball, B. V. and Clark, S. J. 1994. Pathogenicity of the entomogenous fungi Metarhizium anisopliae and Beauveria bassiana against crucifer pests and the honey bee. Biocontrol Science and Technology. 4, pp. 207-214.

The influence of glucosinolates and sugars on feeding by the cabbage stem flea beetle, Psylliodes chrysocephala

Bartlet, E., Parsons, D., Williams, I. H. and Clark, S. J. 1994. The influence of glucosinolates and sugars on feeding by the cabbage stem flea beetle, Psylliodes chrysocephala. Entomologia Experimentalis et Applicata. 73 (1), pp. 77-83.

The transmission of barley yellow dwarf virus at different temperatures

Lowles, A. J., Clark, S. J. and Harrington, R. 1994. The transmission of barley yellow dwarf virus at different temperatures. Abstracts 5th European Congress of Entomology, York, 29th August-2nd September 1994 . pp. 286

Morph identification in natural populations of alate female bird cherry aphids, Rhopalosiphum padi L., by multivariate methods

Taylor, M. S., Tatchell, G. M. and Clark, S. J. 1994. Morph identification in natural populations of alate female bird cherry aphids, Rhopalosiphum padi L., by multivariate methods. Annals of Applied Biology. 125 (1), pp. 1-11.

The use of multiple regression via principal components in forecasting early season aphid (Homoptera: Aphididae) flight

Howling, G. G., Harrington, R., Clark, S. J. and Bale, J. S. 1993. The use of multiple regression via principal components in forecasting early season aphid (Homoptera: Aphididae) flight. Bulletin of Entomological Research. 83, pp. 377-381.

Sex pheromones in the cereal aphid parasitoids Praon volucre and Aphidius rhopalosiphi

Decker, U. M., Powell, W. and Clark, S. J. 1993. Sex pheromones in the cereal aphid parasitoids Praon volucre and Aphidius rhopalosiphi. Entomologia Experimentalis et Applicata. 69, pp. 33-39.

Selection of an isolate of Zoophthora radicans (Zygomycetes:Entomophthorales) for biocontrol of the diamondback moth Plutella xylostella (Lepidoptera:Yponomeutidae)

Pell, J. K., Wilding, N., Player, A. L. and Clark, S. J. 1993. Selection of an isolate of Zoophthora radicans (Zygomycetes:Entomophthorales) for biocontrol of the diamondback moth Plutella xylostella (Lepidoptera:Yponomeutidae). Journal of Invertebrate Pathology. 61, pp. 75-80.

Comparative phenologies of two migrant cereal aphid species

Clark, S. J., Tatchell, G. M., Perry, J. N. and Woiwod, I. P. 1992. Comparative phenologies of two migrant cereal aphid species. Journal of Applied Ecology. 29 (3), pp. 571-580.

The influence of aphids and honeydew on the leaving rate of searching aphid parasitoids from wheat plants

Budenberg, W. J., Powell, W. and Clark, S. J. 1992. The influence of aphids and honeydew on the leaving rate of searching aphid parasitoids from wheat plants. Entomologia Experimentalis et Applicata. 63 (3), pp. 259-264.

A new approach to the use of meteorological and suction trap data in predicitng aphid problems

Harrington, R., Howling, G. G., Bale, J. S. and Clark, S. J. 1991. A new approach to the use of meteorological and suction trap data in predicitng aphid problems.

Pollination requirements of linseed (Linum usitatissimum)

Williams, I. H., Martin, A. H. and Clark, S. J. 1990. Pollination requirements of linseed (Linum usitatissimum). The Journal of Agricultural Science. 115, pp. 347-352.

Effect of pollination on flower, pod and seed production in white lupin (Lupinus albus)

Williams, I. H., Martin, A. P., Ferguson, A. W. and Clark, S. J. 1990. Effect of pollination on flower, pod and seed production in white lupin (Lupinus albus). The Journal of Agricultural Science. 115, pp. 67-73..

Resurgence of insecticide-resistant Myzus persicae on potatoes treated repeatedly with cypermethrin and mineral oil.

Harrington, R., Bartlet, E., Riley, D. K., Ffrench-Constant, R. H. and Clark, S. J. 1989. Resurgence of insecticide-resistant Myzus persicae on potatoes treated repeatedly with cypermethrin and mineral oil. Crop Protection. 8, pp. 340-348.

Estimation of the negative binomial parameter k by maximum quasi-likelihood.

Clark, S. J. and Perry, J. N. 1989. Estimation of the negative binomial parameter k by maximum quasi-likelihood. Biometrics. 45 (1), pp. 309-316.

The effect of fungus infection of Metopolophium dirhodum [Hom.: Aphididae] on the oviposition behaviour of the aphid parasitoid Aphidius rhopalosiphi [Hym.: Aphididae].

Brobyn, P. J., Clark, S. J. and Wilding, N. 1988. The effect of fungus infection of Metopolophium dirhodum [Hom.: Aphididae] on the oviposition behaviour of the aphid parasitoid Aphidius rhopalosiphi [Hym.: Aphididae]. Entomophaga. 33, pp. 333-338.

Close-range behaviour of male pea moths, Cydia nigricana, responding to sex pheromone re-released via the substrate

Perry, J. N., Wall, C. and Clark, S. J. 1988. Close-range behaviour of male pea moths, Cydia nigricana, responding to sex pheromone re-released via the substrate. Entomologia Experimentalis et Applicata. 49 (42767), pp. 37-42.

Effect of decline of insecticide residues on selection for insecticide resistance in Myzus persicae (Sulzer) (Hemiptera: Aphididae)

Ffrench-Constant, R. H., Clark, S. J. and Devonshire, A. L. 1988. Effect of decline of insecticide residues on selection for insecticide resistance in Myzus persicae (Sulzer) (Hemiptera: Aphididae). Bulletin of Entomological Research. 78, pp. 19-29.

Differential rate of selection for resistance by carbamate, organophosphorus and combined pyrethroid and organophosphorus insecticides in Myzus persicae (Sulzer) (Hemiptera: Aphididae).

Ffrench-Constant, R. H., Devonshire, A. L. and Clark, S. J. 1987. Differential rate of selection for resistance by carbamate, organophosphorus and combined pyrethroid and organophosphorus insecticides in Myzus persicae (Sulzer) (Hemiptera: Aphididae). Bulletin of Entomological Research. 77, pp. 227-238.

Laboratory observations on the effect of humidity on the persistence of infectivity of conidia of the aphid pathogen Erynia neoaphidis .

Brobyn, P. J., Wilding, N. and Clark, S. J. 1987. Laboratory observations on the effect of humidity on the persistence of infectivity of conidia of the aphid pathogen Erynia neoaphidis . Annals of Applied Biology. 110 (3), pp. 579-584.

Interference between parasitoids (Hym.: Aphididae) and fungi (Entomophthorales) attacking cereal aphids.

Powell, W., Wilding, N., Brobyn, P. J. and Clark, S. J. 1986. Interference between parasitoids (Hym.: Aphididae) and fungi (Entomophthorales) attacking cereal aphids. Entomophaga. 31, pp. 293-302.

The pattern and speed of displacement of females of simulium-damnosum theobald si (diptera, simuliidae) across the onchocerciasis control program area of west-africa in 1977 and 1978

Johnson, C. G., Walsh, J. F., Davies, J. B., Clark, S. J. and Perry, J. N. 1985. The pattern and speed of displacement of females of simulium-damnosum theobald si (diptera, simuliidae) across the onchocerciasis control program area of west-africa in 1977 and 1978. Bulletin of Entomological Research. 75 (1), pp. 73-92.

The persistence of infectivity of conidia of the aphid pathogen Erynia neophidis on leaves in the field

Brobyn, P. J., Wilding, N. and Clark, S. J. 1985. The persistence of infectivity of conidia of the aphid pathogen Erynia neophidis on leaves in the field. Annals of Applied Biology. 107 (3), pp. 365-376.

Use of population-models to estimate the proportion of cyst-nematode eggs killed by fumigation

Perry, J. N. and Clark, S. J. 1983. Use of population-models to estimate the proportion of cyst-nematode eggs killed by fumigation. Journal of Applied Ecology. 20 (3), pp. 857-864.

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