Functional resilience of soil microbial communities depends on both soil structure and microbial community composition

Griffiths, B. S., Hallett, P. D., Kuan, H. L., Gregory, A. S., Watts, C. W. and Whitmore, A. P. 2008. Functional resilience of soil microbial communities depends on both soil structure and microbial community composition. Biology and Fertility of Soils. 44, pp. 745-754.

Related outputs

Editorial for soil organic matter 2019 special issue

A - Papers appearing in refereed journals

Gregory, A. S. and Blagodatskaya, E. 2019. Editorial for soil organic matter 2019 special issue. European Journal of Soil Science. 70 (4), pp. 713-714.

Multi-objective optimization as a tool to identify possibilities for future agricultural landscapes

A - Papers appearing in refereed journals

Todman, L. C., Coleman, K., Milne, A. E., Gil, J. D. B., Reidsma, P., Schwoob, M-H., Treyer, S. and Whitmore, A. P. 2019. Multi-objective optimization as a tool to identify possibilities for future agricultural landscapes. Science of the Total Environment. 687 (15 October), pp. 535-545.

Exploring future food provision scenarios for China

A - Papers appearing in refereed journals

Ma, L., Bai, Z., Ma, M., Guo, M., Jiang, R., Liu, J., Oenema, O., Velthof, G. L., Whitmore, A. P., Crawford, J. W., Dobermann, A., Schwoob, M. and Zhang, F. 2019. Exploring future food provision scenarios for China. Environmental Science & Technology. 53 (3), pp. 1385-1393.

Accounting for data sparsity when forming spatially coherent zones

A - Papers appearing in refereed journals

Hassall, K. L., Whitmore, A. P. and Milne, A. E. 2019. Accounting for data sparsity when forming spatially coherent zones. Applied Mathematical Modelling. 72, pp. 537-552.

Sustainable Development Goal 2: improved targets and indicators for agriculture and food security

A - Papers appearing in refereed journals

Juliana Dias Bernandes Gil, Pytrik Reidsma, Ken Giller, Lindsay Todman, Whitmore, A. P. and Martin van Ittersum 2019. Sustainable Development Goal 2: improved targets and indicators for agriculture and food security . Ambio. 48 (7), pp. 685-698.

Relating soil C and organic matter fractions to structural stability

A - Papers appearing in refereed journals

Jensen, J. L., Schjonning, P., Watts, C. W., Christensen, B. T., Peltre, C. and Munkholm, L. 2019. Relating soil C and organic matter fractions to structural stability. Geoderma. 337 (1 March), pp. 834-843.

Soil bulk density impacts on root water potential and ABA export in drying soil

A - Papers appearing in refereed journals

Donaldson, S., Dodd, I. C. and Whitmore, A. P. 2018. Soil bulk density impacts on root water potential and ABA export in drying soil. Acta Horticulturae. 1197 (1197), pp. 15-22.

Nitrogen fertiliser replacement values for organic amendments appear to increase with N application rates

A - Papers appearing in refereed journals

Hijbeek, R., Ten Berge, H. F. M., Whitmore, A. P., Barkusky, D., Schröder, J. J. and Van Ittersum, M. K. 2018. Nitrogen fertiliser replacement values for organic amendments appear to increase with N application rates. Nutrient Cycling in Agroecosystems. 110 (1), pp. 105-115.

Evidence for functional state transitions in intensively-managed soil ecosystems

A - Papers appearing in refereed journals

Todman, L. C., Fraser, F. C., Corstanje, R., Harris, J. A., Pawlett, M., Ritz, K. and Whitmore, A. P. 2018. Evidence for functional state transitions in intensively-managed soil ecosystems. Scientific Reports. 8 (11522).

Soil Water Retention: Uni-Modal Models of Pore-Size Distribution Neglect Impacts of Soil Management

A - Papers appearing in refereed journals

Jensen, J. L., Schjonning, P., Watts, C. W., Christensen, B. T. and Munkholm, L. J. 2018. Soil Water Retention: Uni-Modal Models of Pore-Size Distribution Neglect Impacts of Soil Management. Soil Science Society of America Journal. 83 (1), pp. 18-26.

Converting loss-on-ignition to organic carbon content in arable topsoil: Pitfalls and proposed procedure

A - Papers appearing in refereed journals

Jensen, J. L., Christensen, B. T., Schjonning, P., Watts, C. W. and Munkholm, L. J. 2018. Converting loss-on-ignition to organic carbon content in arable topsoil: Pitfalls and proposed procedure . European Journal of Soil Science.

The environmental costs and benefits of high-yield farming

A - Papers appearing in refereed journals

Balmford, A., Amano, T., Bartlett, H., Chadwick, D., Collins, A. L., Edwards, D., Field, R., Garnsworthy, P., Green, R., Smith, P., Waters, H., Whitmore, A. P., Broom, D. M., Chara, J., Finch, T., Garnett, E., Gathorne-Hardy, A., Hernandez-Medrano, J., Herrero, M., Hua, F., Latawiec, A., Misselbrook, T. H., Phalan, B., Simmons I. B., Takahashi, T., Vause, J., Ermgassen, E. Z. and Eisner, R. 2018. The environmental costs and benefits of high-yield farming. Nature Sustainability. 1, pp. 477-285.

Species and Genotype Effects of Bioenergy Crops on Root Production, Carbon and Nitrogen in Temperate Agricultural Soil

A - Papers appearing in refereed journals

Gregory, A. S., Dungait, J. A. J., Shield, I. F., Macalpine, W. J., Cunniff, J., Durenkamp, M., White, R. P., Joynes, A. and Richter, G. M. 2018. Species and Genotype Effects of Bioenergy Crops on Root Production, Carbon and Nitrogen in Temperate Agricultural Soil. BioEnergy Research. 11, pp. 382-397.

Soil organic matter widens the range of water contents for tillage

A - Papers appearing in refereed journals

Obour, P. B., Jensen, J. L., Lamande, M., Watts, C. W. and Munkholm, L. J. 2018. Soil organic matter widens the range of water contents for tillage. Soil & Tillage Research. 182 (October), pp. 57-65.

A comparison of GPR early-time signal approaches for mapping changes in shallow soil water content

A - Papers appearing in refereed journals

Algeo, J., Slater, L., Binley, A., Van Dam, R. L. and Watts, C. W. 2018. A comparison of GPR early-time signal approaches for mapping changes in shallow soil water content. Vadose Zone Journal. 17 (1).

Impact of two centuries of intensive agriculture on soil carbon, nitrogen and phosphorus cycling in the UK

A - Papers appearing in refereed journals

Muhammed, S. E., Coleman, K., Wu, L., Bell, V. A., Davies, J. A. C., Carnell, E. J., Tomlinson, S. J., Dore, A. J., Dragosits, U., Naden, P. S., Glendining, M. J., Whitmore, A. P. and Tipping, E. 2018. Impact of two centuries of intensive agriculture on soil carbon, nitrogen and phosphorus cycling in the UK. Science of the Total Environment. 634, pp. 1486-1504.

A novel dielectric tensiometer enabling precision PID-based irrigation control of polytunnel-grown strawberries in coir

A - Papers appearing in refereed journals

Goodchild, M. S., Jenkins, M. D., Whalley, W. R. and Watts, C. W. 2018. A novel dielectric tensiometer enabling precision PID-based irrigation control of polytunnel-grown strawberries in coir. Biosystems Engineering. 165, pp. 70-76.

Effect of soil saturation on denitrification in a grassland soil

A - Papers appearing in refereed journals

Cardenas, L. M., Bol, R., Lewicka-Szczebak, D., Gregory, A. S., Matthews, G. P., Whalley, W. R., Misselbrook, T. H., Scholefield, D. and Well, R. 2017. Effect of soil saturation on denitrification in a grassland soil. Biogeosciences. 14 (20), pp. 4691-4710.

The landscape model: A model for exploring trade-offs between agricultural production and the environment

A - Papers appearing in refereed journals

Coleman, K., Muhammed, S. E., Milne, A. E., Todman, L. C., Dailey, A. G., Glendining, M. J. and Whitmore, A. P. 2017. The landscape model: A model for exploring trade-offs between agricultural production and the environment. Science of the Total Environment. 609 (Supplement C), pp. 1483-1499.

Soil texture analysis revisited: Removal of organic matter matters more than ever

A - Papers appearing in refereed journals

Jensen, J. L., Schjonning, P., Watts, C. W., Christensen, B. T. and Munkholm, L. J. 2017. Soil texture analysis revisited: Removal of organic matter matters more than ever. PLOS ONE. 12 (5), p. 10p.

Assessing sampling designs for determining fertilizer practice from yield data

A - Papers appearing in refereed journals

Muhammed, S. E., Marchant, B. P., Webster, R., Whitmore, A. P., Dailey, A. G. and Milne, A. E. 2017. Assessing sampling designs for determining fertilizer practice from yield data. Computers and Electronics in Agriculture. 135, pp. 163-174.

Milled cereal straw accelerates earthworm (Lumbricus terrestris) growth more than selected organic amendments

A - Papers appearing in refereed journals

Sizmur, T., Martin, E., Wagner, K., Parmentier, E., Watts, C. W. and Whitmore, A. P. 2017. Milled cereal straw accelerates earthworm (Lumbricus terrestris) growth more than selected organic amendments. Applied Soil Ecology. 113, pp. 166-177.

On the effectiveness of GPR early-time analysis for mapping soil water content

C1 - Edited contributions to conferences/learned societies

Van Dam, R. L., Alegro, J., Slater, L. D. and Watts, C. W. 2017. On the effectiveness of GPR early-time analysis for mapping soil water content. Proceedings 15th International Congress of the Brazillian Geophysical Society, Rio de Janeiro, 31st July-3rd August, 2017. Sociedade Brasileira de Geofisica. pp. 3pp

Methods to estimate changes in soil water for phenotyping root activity in the field

A - Papers appearing in refereed journals

Whalley, W. R., Binley, A., Watts, C. W., Shanahan, P., Dodd, I. C., Ober, E. S., Ashton, R. W., Webster, C. P., White, R. P. and Hawkesford, M. J. 2017. Methods to estimate changes in soil water for phenotyping root activity in the field. Plant and Soil. 415 (1-2), pp. 407-422.

Cover cropping with oilseed radish (Raphanus sativus) alone does not enhance deep burrowing earthworm (Lumbricus terrestris) midden counts

A - Papers appearing in refereed journals

Stroud, J. L., Irons, D. E., Watts, C. W., Storkey, J., Morris, N. L., Stobart, R. M., Fielding, H. A. and Whitmore, A. P. 2017. Cover cropping with oilseed radish (Raphanus sativus) alone does not enhance deep burrowing earthworm (Lumbricus terrestris) midden counts. Soil & Tillage Research. 165, pp. 11-15.

Soil aggregate stability and macrofauna as indicators of soil health and sustainable agricultural systems

Conference paper

Stroud, J. L. and Watts, C. W. 2017. Soil aggregate stability and macrofauna as indicators of soil health and sustainable agricultural systems. International Fertiliser Society 810. International Fertiliser Society (IFS).

Root growth in field-grown winter wheat: Some effects of soil conditions, season and genotype.

A - Papers appearing in refereed journals

Hodgkinson, L., Dodd, I. C., Binley, A., Ashton, R. W., White, R. P., Watts, C. W. and Whalley, W. R. 2017. Root growth in field-grown winter wheat: Some effects of soil conditions, season and genotype. European Journal of Agronomy. 91 (November), pp. 74-83.

Parametric estimation of water retention using Mgmdh method and principal component analysis

A - Papers appearing in refereed journals

Neyshaburi, M. R., Bayat, H., Rastgou, M., Mohammadi, K., Gregory, A. S. and Nariman-Zadeh, N. 2016. Parametric estimation of water retention using Mgmdh method and principal component analysis. Polish Journal of Soil Science. 49 (1), pp. 29-47.

Lumbricus terrestris middens are biological and chemical hotspots in a minimum tillage arable ecosystem

A - Papers appearing in refereed journals

Stroud, J. L., Irons, D. E., Carter, J. E., Watts, C. W., Murray, P. J., Norris, S. L. and Whitmore, A. P. 2016. Lumbricus terrestris middens are biological and chemical hotspots in a minimum tillage arable ecosystem. Applied Soil Ecology. 105, pp. 31-35.

Lumbricus terrestris abundance is not enhanced after three years of compost amendments on a reduced tillage wheat cultivation conversion

A - Papers appearing in refereed journals

Stroud, J. L., Irons, D., Watts, C. W. and Whitmore, A. P. 2016. Lumbricus terrestris abundance is not enhanced after three years of compost amendments on a reduced tillage wheat cultivation conversion. Applied Soil Ecology. 98, pp. 282-284.

Distinct respiratory responses of soils to complex organic substrate are governed predominantly by soil architecture and its microbial community

A - Papers appearing in refereed journals

Fraser, F. C., Todman, L. C., Corstanje, R., Deeks, L. K., Harris, J. A., Pawlett, M., Whitmore, A. P. and Ritz, K. 2016. Distinct respiratory responses of soils to complex organic substrate are governed predominantly by soil architecture and its microbial community. Soil Biology and Biochemistry. 103, pp. 493-501.

On the origin of carbon dioxide released from rewetted soils

A - Papers appearing in refereed journals

Fraser, F. C., Corstanje, R., Deeks, L. K., Harris, J. A., Pawlett, M., Todman, L. C., Whitmore, A. P. and Ritz, K. 2016. On the origin of carbon dioxide released from rewetted soils. Soil Biology and Biochemistry. 101, pp. 1-5.

150 years of macronutrient change in unfertilized UK ecosystems: Observations vs simulations

A - Papers appearing in refereed journals

Davies, J. A. C., Tipping, E. and Whitmore, A. P. 2016. 150 years of macronutrient change in unfertilized UK ecosystems: Observations vs simulations. Science of the Total Environment. 572 (1), pp. 1485-1495.

Population collapse of Lumbricus terrestris in conventional arable cultivations and response to straw applications

A - Papers appearing in refereed journals

Stroud, J. L., Irons, D. E., Watts, C. W., White, R. P., McGrath, S. P. and Whitmore, A. P. 2016. Population collapse of Lumbricus terrestris in conventional arable cultivations and response to straw applications. Applied Soil Ecology. 108, pp. 72-75.

Effect of compaction on nitrous oxide and nitrogen emissions from UK soils

C1 - Edited contributions to conferences/learned societies

Cardenas, L. M., Matthews, G. P., Gregory, A. S., Whalley, W. R., Bird, N. R. A., Misselbrook, T. H., Laudone, G. M., Dhanoa, M. S. and Scholefield, D. 2016. Effect of compaction on nitrous oxide and nitrogen emissions from UK soils. Abstract for GGAA conferernce, Melbourne, 14-18 February, 2016.

The unique contribution of Rothamsted to ecological research at large temporal scales

B - Book chapters etc edited externally

Storkey, J., Macdonald, A. J., Bell, J. R., Clark, I. M., Gregory, A. S., Hawkins, N. J., Hirsch, P. R., Todman, L. C. and Whitmore, A. P. 2016. The unique contribution of Rothamsted to ecological research at large temporal scales. in: Dumbrell, A. J., Kordas, R. L. and Woodward, G. (ed.) Advances in Ecological Research 55: Large-Scale Ecology: Model Systems to Global Perspectives Academic Press, Oxford. pp. 3-42

Defining and quantifying the resilience of responses to disturbance: a conceptual and modelling approach from soil science

A - Papers appearing in refereed journals

Todman, L. C., Fraser, F. C., Corstanje, R., Deeks, L. K., Harris, J. A., Pawlett, M., Ritz, K. and Whitmore, A. P. 2016. Defining and quantifying the resilience of responses to disturbance: a conceptual and modelling approach from soil science. Scientific Reports. 6, p. 28426.

The North Wyke Farm Platform: effect of temperate grassland farming systems on soil moisture contents, runoff and associated water quality dynamics

A - Papers appearing in refereed journals

Orr, R. J., Murray, P. J., Eyles, C. J., Blackwell, M. S. A., Cardenas, L. M., Collins, A. L., Dungait, J. A. J., Goulding, K. W. T., Griffith, B. A., Gurr, S. J., Harris, P., Hawkins, J. M. B., Misselbrook, T. H., Rawlings, C. J., Shepherd, A., Sint, H. M., Takahashi, T., Tozer, K. N., Whitmore, A. P., Wu, L. and Lee, M. R. F. 2016. The North Wyke Farm Platform: effect of temperate grassland farming systems on soil moisture contents, runoff and associated water quality dynamics. European Journal of Soil Science. 67 (4), pp. 374-385.

Long-term management changes in topsoil and subsoil organic carbon and nitrogen dynamics in a temperate agricultural system

A - Papers appearing in refereed journals

Gregory, A. S., Dungait, J. A. J., Watts, C. W., Bol, R., Dixon, E. R., White, R. P. and Whitmore, A. P. 2016. Long-term management changes in topsoil and subsoil organic carbon and nitrogen dynamics in a temperate agricultural system. European Journal of Soil Science. 67 (4), pp. 421-430.

Deep roots and soil structure

A - Papers appearing in refereed journals

Gao, W., Hodgkinson, L., Jin, K., Watts, C. W., Ashton, R. W., Shen, J., Ren, T., Dodd, I. C., Binley, A., Phillips, A. L., Hedden, P., Hawkesford, M. J. and Whalley, W. R. 2016. Deep roots and soil structure. Plant, Cell & Environment. 39 (8), pp. 1662-1668.

Soil water uptake from SRC willow simulated using the process-based model LUCASS

C1 - Edited contributions to conferences/learned societies

Richard, B., Cunniff, J., Cerasuolo, M., Barraclough, T. J. P., Gregory, A. S. and Richter, G. M. 2015. Soil water uptake from SRC willow simulated using the process-based model LUCASS. Biomass and Energy Crops V. Aspects of Applied Biology 131 . Association of Applied Biologists (AAB) Wellesbourne Warwick . pp. 251-255

The effect of farmers' decisions on pest control with Bt crops: a billion dollar game of strategy

A - Papers appearing in refereed journals

Milne, A. E., Bell, J. R., Hutchison, W. D., Van Den Bosch, F., Mitchell, P. D., Crowder, D., Parnell, S. and Whitmore, A. P. 2015. The effect of farmers' decisions on pest control with Bt crops: a billion dollar game of strategy. PLoS Computational Biology. 11, p. e1004483.

Nitrous oxide emissions from fertilised UK arable soils: fluxes, emission factors and mitigation

A - Papers appearing in refereed journals

Bell, M. J., Hinton, N., Cloy, J. M., Topp, C. F. E., Rees, R. M., Cardenas, L. M., Scott, T., Webster, C. P., Ashton, R. W., Whitmore, A. P., Williams, J. R., Balshaw, H., Paine, F., Goulding, K. W. T. and Chadwick, D. R. 2015. Nitrous oxide emissions from fertilised UK arable soils: fluxes, emission factors and mitigation. Agriculture, Ecosystems & Environment. 212, pp. 134-147.

Modelling the impact of environmental changes on grassland systems with SPACSYS

C1 - Edited contributions to conferences/learned societies

Wu, L., Whitmore, A. P. and Bellocchi, G. 2015. Modelling the impact of environmental changes on grassland systems with SPACSYS. Proceedings of the MACSUR International Livestock Modelling and Research Colloquium . Cambridge University Press (CUP) Cambridge.

Technologies for increasing carbon storage in soil to mitigate climate change

A - Papers appearing in refereed journals

Whitmore, A. P., Kirk, G. J. D. and Rawlins, B. G. 2015. Technologies for increasing carbon storage in soil to mitigate climate change. Soil Use and Management. 31 (Suppl. 1), pp. 62-71.

Probing the basis of soil resilience

A - Papers appearing in refereed journals

Corstanje, R., Deeks, L. R., Whitmore, A. P., Gregory, A. S. and Ritz, K. 2015. Probing the basis of soil resilience. Soil Use and Management. 31 (Suppl. 1), pp. 72-81.

A review of the impacts of degradation threats on soil properties in the UK

A - Papers appearing in refereed journals

Gregory, A. S., Ritz, K., McGrath, S. P., Quinton, J. N., Goulding, K. W. T., Jones, R. J. A., Harris, J. A., Bol, R., Wallace, P., Pilgrim, E. S. and Whitmore, A. P. 2015. A review of the impacts of degradation threats on soil properties in the UK. Soil Use and Management. 31 (Suppl. 1), pp. 1-15.

High yielding biomass genotypes of willow (Salix spp.) show differences in below ground biomass allocation

A - Papers appearing in refereed journals

Cunniff, J., Purdy, S. J., Barraclough, T. J. P., Castle, M., Maddison, A. L., Jones, L. E., Shield, I. F., Gregory, A. S. and Karp, A. 2015. High yielding biomass genotypes of willow (Salix spp.) show differences in below ground biomass allocation. Biomass & Bioenergy. 80 (September), pp. 114-127.

The use of electromagnetic induction to monitor changes in soil moisture profiles beneath different wheat genotypes

A - Papers appearing in refereed journals

Shanahan, P. W., Binley, A., Whalley, W. R. and Watts, C. W. 2015. The use of electromagnetic induction to monitor changes in soil moisture profiles beneath different wheat genotypes. Soil Science Society of America Journal. 79, pp. 459-466.

Communicating the uncertainty in estimated greenhouse gas emissions from agriculture

A - Papers appearing in refereed journals

Milne, A. E., Glendining, M. J., Lark, R. M., Perryman, S. A. M., Gordon, T. and Whitmore, A. P. 2015. Communicating the uncertainty in estimated greenhouse gas emissions from agriculture. Journal of Environmental Management. 160, pp. 139-153.

Carbon sequestration by perennial energy crops: is the jury still out?

A - Papers appearing in refereed journals

Agostini, F., Gregory, A. S. and Richter, G. M. 2015. Carbon sequestration by perennial energy crops: is the jury still out? Bioenergy Research. 8 (3), pp. 1057-1080.

Simulation of nitrous oxide emissions at field scale using the SPACSYS model

A - Papers appearing in refereed journals

Wu, L., Rees, R. M., Tarsitano, D., Zhang, X., Jones, S. K. and Whitmore, A. P. 2015. Simulation of nitrous oxide emissions at field scale using the SPACSYS model. Science of the Total Environment. 530-531, pp. 76-86.

The Rothamsted Long-term Experiments

C1 - Edited contributions to conferences/learned societies

Macdonald, A. J., Powlson, D. S., Poulton, P. R., Watts, C. W., Clark, I. M., Storkey, J., Hawkins, N. J., Glendining, M. J., Goulding, K. W. T. and McGrath, S. P. 2015. The Rothamsted Long-term Experiments. Valuing long-term sites and experiments for agriculture and ecology. Aspects of Applied Biology 128 . Association of Applied Biologists (AAB) Wellesbourne Warwick . pp. 1-10

Isotope fractionation factors controlling isotopocule signatures of soil-emitted N2O produced by denitrification processes of various rates

A - Papers appearing in refereed journals

Lewicka-Szczebak, D., Well, R., Bol, R., Gregory, A. S., Matthews, G. P., Misselbrook, T. H., Whalley, W. R. and Cardenas, L. M. 2015. Isotope fractionation factors controlling isotopocule signatures of soil-emitted N2O produced by denitrification processes of various rates. Rapid Communications in Mass Spectrometry. 29 (3), pp. 269-282.

Investigating the relationship between unsaturated hydraulic conductivity curve and confined compression curve

A - Papers appearing in refereed journals

Bayat, H., Sedaghat, A., Sinegani, A. A. S. and Gregory, A. S. 2015. Investigating the relationship between unsaturated hydraulic conductivity curve and confined compression curve. Journal of Hydrology. 522, pp. 353-368.

The North Wyke Farm Platform, a national capability for research into sustainability of temperate agricultural grassland management: data and modelling opportunities

C2 - Non-edited contributions to conferences

Harris, P., Griffith, B. A., Shepherd, A., Peukert, S., Hawkins, J. M. B., Elyes, C., Whitmore, A. P., Blackwell, M. S. A., Brazier, R. E., Cardenas, L. M., Wu, L., Dungait, J. A. J., Collins, A. L., Gurr, S. J., Murray, P. J., Goulding, K. W. T. and Orr, R. J. 2014. The North Wyke Farm Platform, a national capability for research into sustainability of temperate agricultural grassland management: data and modelling opportunities. Abstracts Tereno International Conference: from Observation to Prediction in Terrestrial Systems, Bonn, 29 September-2 October 2014 . pp. P2-07

Exploiting yield maps and soil management zones

G - Articles in popular magazines and other technical publications

Milne, A. E., Marchant, B. P., Whitmore, A. P. and Muhammed, S. E. 2014. Exploiting yield maps and soil management zones. National Institute of Agricultural Botany, (NIAB) Cambridge .

Does organic management lead to enhanced soil physical quality?

A - Papers appearing in refereed journals

Papadopoulos, A., Bird, N. R. A., Whitmore, A. P. and Mooney, S. J. 2014. Does organic management lead to enhanced soil physical quality? Geoderma. 213, pp. 435-443.

Nitrous oxide emissions from fertilised UK arable soils: quantification and mitigation

C2 - Non-edited contributions to conferences

Bell, M., Winning, M., Cloy, J., Rees, B., Cardenas, L. M., Donovan, N., Scott, T., Webster, C. P., Whitmore, A. P., Williams, J., Balshaw, H., Paine, F. and Chadwick, D. R. 2014. Nitrous oxide emissions from fertilised UK arable soils: quantification and mitigation. Cordovil, C. M. d. S. (ed.) Abstracts 18th Nitrogen Workshop, Lisbon, 30 June- 3 July 2014 . pp. 375-376

Triaxial testing to determine the effect of soil type and organic carbon content on soil consolidation and shear deformation characteristics

A - Papers appearing in refereed journals

Chakraborty, D., Watts, C. W., Powlson, D. S., Macdonald, A. J., Ashton, R. W., White, Robin P. and Whalley, W. R. 2014. Triaxial testing to determine the effect of soil type and organic carbon content on soil consolidation and shear deformation characteristics. Soil Science Society of America Journal. 78, pp. 1192-1200.

Analysis of uncertainties in the estimates of nitrous oxide and methane emissions in the UK's greenhouse gas inventory for agriculture

A - Papers appearing in refereed journals

Milne, A. E., Glendining, M. J., Bellamy, P., Misselbrook, T. H., Gilhespy, S. L., Rivas Casado, M., Hulin, A., Van Oijen, M. and Whitmore, A. P. 2014. Analysis of uncertainties in the estimates of nitrous oxide and methane emissions in the UK's greenhouse gas inventory for agriculture. Atmospheric Environment. 82, pp. 94-105.

Ranking factors affecting emissions of GHG from incubated agricultural soils

A - Papers appearing in refereed journals

Garcia-Marco, S., Ravella, S. R., Chadwick, D. R., Vallejo, A., Gregory, A. S. and Cardenas, L. M. 2014. Ranking factors affecting emissions of GHG from incubated agricultural soils. European Journal of Soil Science. 65 (4), pp. 573-583.

An assessment of subsoil organic carbon stocks in England and Wales

A - Papers appearing in refereed journals

Gregory, A. S., Kirk, G. J. D., Keay, C. A., Rawlins, B. G., Wallace, P. and Whitmore, A. P. 2014. An assessment of subsoil organic carbon stocks in England and Wales. Soil Use and Management. 30 (1), pp. 10-22.

Using SPACSYS to analyse the interaction between plant and environment in a systems approach

C2 - Non-edited contributions to conferences

Wu, L. and Whitmore, A. P. 2013. Using SPACSYS to analyse the interaction between plant and environment in a systems approach. Abstracts Workshop on Exploring New Ideas for Trade and Agriculture Model Integration for Assessing the Impacts of Climate Change on Food Security, Haifa, 3-5 March 2013 .

Modelling the path to better soil applied pesticides

C2 - Non-edited contributions to conferences

Sweeney, P., Travis, K., Whalley, W. R., Whitmore, A. P., Dailey, A. G., Wu, L., Van Beinum, W. and Brown, C. 2013. Modelling the path to better soil applied pesticides. Abstracts Conference on Pesticide Behaviour in Soils, Water and Air, York, 2-4 September 2013 .

What do we need to know to enhance the environmental sustainability of agricultural production? A prioritisation of knowledge needs for the UK food system

A - Papers appearing in refereed journals

Dicks, L. V., Bardgett, R. D., Bell, J., Benton, T. G., Booth, A., Bouwman, J., Brown, C., Bruce, A., Burgess, P. J., Butler, S. J., Crute, I. R., Dixon, F., Drummond, C., Freckleton, R. P., Gill, M., Graham, A., Hails, R. S., Hallett, J., Hart, B., Hillier, J., Holland, J. M., Huxley, J., Ingram, J. S. I., King, V., MacMillan, T., Mcgonigle, D. F., McQuaid, C. F., Nevard, T., Norman, S., Norris, K., Pazderka, C., Poonaji, I., Quinn, C. H., Ramsden, S. J., Sinclair, D., Siriwardena, G. M., Vickery, J. A., Whitmore, A. P., Wolmer, W. and Sutherland, W. J. 2013. What do we need to know to enhance the environmental sustainability of agricultural production? A prioritisation of knowledge needs for the UK food system. Sustainability. 5 (7), pp. 3095-3115.

Estimating penetrometer resistance and matric potential from the velocities of shear and compression waves

A - Papers appearing in refereed journals

Gao, W., Watts, C. W., Ren, T., Shin, H-C., Taherzadeh, S., Attenborough, K., Jenkins, M. and Whalley, W. R. 2013. Estimating penetrometer resistance and matric potential from the velocities of shear and compression waves. Soil Science Society of America Journal. 77, pp. 721-728.

Non-invasive characterization of pore-related and elastic properties of soils in linear Biot-Stoll theory using acoustic-to-seismic coupling

A - Papers appearing in refereed journals

Shin, H-C., Taherzadeh, S., Attenborough, K., Whalley, W. R. and Watts, C. W. 2013. Non-invasive characterization of pore-related and elastic properties of soils in linear Biot-Stoll theory using acoustic-to-seismic coupling. European Journal of Soil Science. 64 (3), pp. 308-323.

A novel grass hybrid to reduce flood generation in temperate regions

A - Papers appearing in refereed journals

Macleod, C. J. A., Humphreys, M. W., Whalley, W. R., Turner, L., Binley, A., Watts, C. W., Skot, L., Joynes, A., Hawkins, S., King, I. P., O'donovan, S. and Haygarth, P. M. 2013. A novel grass hybrid to reduce flood generation in temperate regions. Scientific Reports. 3, p. 1683.

A dual-porous, inverse model of water retention to study biological and hydrological interactions in soil

A - Papers appearing in refereed journals

Laudone, G. M., Matthews, G. P., Gregory, A. S., Bird, N. R. A. and Whalley, W. R. 2013. A dual-porous, inverse model of water retention to study biological and hydrological interactions in soil. European Journal of Soil Science. 64 (3), pp. 345-356.

Modification of the RothC model for simulations of soil organic C dynamics in dryland regions

A - Papers appearing in refereed journals

Farina, R., Coleman, K. and Whitmore, A. P. 2013. Modification of the RothC model for simulations of soil organic C dynamics in dryland regions. Geoderma. 200-201, pp. 18-30.

Genotypic variation in the ability of wheat roots to penetrate wax layers

A - Papers appearing in refereed journals

Whalley, W. R., Dodd, I. C., Watts, C. W., Webster, C. P., Phillips, A. L., Andralojc, P. J., White, Robin P., Davies, W. J. and Parry, M. A. J. 2013. Genotypic variation in the ability of wheat roots to penetrate wax layers. Plant and Soil. 364, pp. 171-179.

Natural capital and ecosystem services, developing an appropriate soils framework as a basis for valuation

A - Papers appearing in refereed journals

Robinson, D. A., Hockley, N., Cooper, D. M., Emmett, B. A., Keith, A. M., Lebron, I., Reynolds, B., Tipping, E., Tye, A. M., Watts, C. W., Whalley, W. R., Black, H. I. J., Warren, G. P. and Robinson, J. S. 2013. Natural capital and ecosystem services, developing an appropriate soils framework as a basis for valuation. Soil Biology and Biochemistry. 57, pp. 1023-1033.

Combination of artificial neural networks and fractal theory to predict soil water retention curve

A - Papers appearing in refereed journals

Bayat, H., Neyshaburi, M. R., Mohammadi, K., Nariman-Zadeh, N., Irannejad, M. and Gregory, A. S. 2013. Combination of artificial neural networks and fractal theory to predict soil water retention curve. Computers and Electronics in Agriculture. 92, pp. 92-103.

Nutrient management in support of environmental and agricultural sustainability

A - Papers appearing in refereed journals

Whitmore, A. P., Goulding, K. W. T., Glendining, M. J., Dailey, A. G., Coleman, K. and Powlson, D. S. 2012. Nutrient management in support of environmental and agricultural sustainability. Sustainability. 4 (10), pp. 2513-2524.

Carbon sequestration in soils - has the concept been over-sold?

C2 - Non-edited contributions to conferences

Powlson, D. S., Whitmore, A. P. and Goulding, K. W. T. 2012. Carbon sequestration in soils - has the concept been over-sold? Abstracts BSSS Annual Meeting: Soil Science and Food Security, Loughborough, 4-5 September 2012 .

Root respiration of barley in a semiarid Mediterranean agroecosystem: field and modelling approaches

A - Papers appearing in refereed journals

Morell, F. J., Whitmore, A. P., Alvaro-Fuentes, J., Lampurlanes, J. and Cantero-Martinez, C. 2012. Root respiration of barley in a semiarid Mediterranean agroecosystem: field and modelling approaches. Plant and Soil. 351, pp. 135-147.

Spatially explicit modelling of changes in soil organic C in agricultural soils in Italy, 2001-2010: potential for compost amendment

A - Papers appearing in refereed journals

Mondini, C., Coleman, K. and Whitmore, A. P. 2012. Spatially explicit modelling of changes in soil organic C in agricultural soils in Italy, 2001-2010: potential for compost amendment. Agriculture, Ecosystems & Environment. 153, pp. 24-32.

Commentary: Developing sustainable farming systems by valuing ecosystem services

A - Papers appearing in refereed journals

Goulding, K. W. T. and Whitmore, A. P. 2012. Commentary: Developing sustainable farming systems by valuing ecosystem services. International Journal of Agricultural Sustainability. 10, pp. 5-7.

The effects of compaction and soil drying on penetrometer resistance

A - Papers appearing in refereed journals

Gao, W., Watts, C. W., Ren, T. and Whalley, W. R. 2012. The effects of compaction and soil drying on penetrometer resistance. Soil & Tillage Research. 125, pp. 14-22.

Predicting penetrometer resistance from the compression characteristic of soil

A - Papers appearing in refereed journals

Gao, W., Ren, T., Bengough, A. G., Auneau, L., Watts, C. W. and Whalley, W. R. 2012. Predicting penetrometer resistance from the compression characteristic of soil. Soil Science Society of America Journal. 76, pp. 361-369.

Changes in soil organic carbon and climate change - Application of the RothC model in agro-silvo-pastoral Mediterranean systems

A - Papers appearing in refereed journals

Francaviglia, R., Coleman, K., Whitmore, A. P., Doro, L., Urracci, G., Rubino, M. and Ledda, L. 2012. Changes in soil organic carbon and climate change - Application of the RothC model in agro-silvo-pastoral Mediterranean systems. Agricultural Systems. 112, pp. 48-54.

Advances in the understanding of nutrient dynamics and management in UK agriculture

A - Papers appearing in refereed journals

Dungait, J. A. J., Cardenas, L. M., Blackwell, M. S. A., Wu, L., Withers, P. J. A., Chadwick, D. R., Bol, R., Murray, P. J., Macdonald, A. J., Whitmore, A. P. and Goulding, K. W. T. 2012. Advances in the understanding of nutrient dynamics and management in UK agriculture. Science of the Total Environment. 434, pp. 39-50.

Influence of organic matter on rheological properties of soil

A - Papers appearing in refereed journals

Markgraf, W., Watts, C. W., Whalley, W. R., Hrkac, T. and Horn, R. 2012. Influence of organic matter on rheological properties of soil. Applied Clay Science. 64, pp. 25-33.

The effect of agricultural land use on the nature and dynamics of subsoil

C2 - Non-edited contributions to conferences

Gregory, A. S., Dungait, J. A. J., Dixon, E. R., Bol, R. and Whitmore, A. P. 2012. The effect of agricultural land use on the nature and dynamics of subsoil. Abstracts 4th International Congress Eurosoil, Bari, 2-6 July 2012 . pp. 387

Soil organic matter turnover is governed by accessibility not recalcitrance

A - Papers appearing in refereed journals

Dungait, J. A. J., Hopkins, D. W., Gregory, A. S. and Whitmore, A. P. 2012. Soil organic matter turnover is governed by accessibility not recalcitrance. Global Change Biology. 18 (6), pp. 1781-1796.

Isotope fractionation factors controlling isotopologue signatures of soil-emitted N2O produced by denitrification processes of various rates

C2 - Non-edited contributions to conferences

Lewicka-Szczebak, D., Well, R., Cardenas, L. M., Matthews, P., Misselbrook, T. H., Bol, R., Whalley, W. R. and Gregory, A. S. 2012. Isotope fractionation factors controlling isotopologue signatures of soil-emitted N2O produced by denitrification processes of various rates. Abstracts 6th International Symposium on Isotopomers, Washington, DC, 18-22 June 2012 . pp. 51

A dual porous model to predict the effects of soil structure on denitrification and N2O emission

C2 - Non-edited contributions to conferences

Laudone, G. M., Matthews, G. P., Bird, N. R. A., Whalley, W. R., Cardenas, L. M. and Gregory, A. S. 2012. A dual porous model to predict the effects of soil structure on denitrification and N2O emission. Abstracts 4th International Congress Eurosoil 2012, Bari, 2-6 July 2012 .

Shortcomings in wheat yield predictions

A - Papers appearing in refereed journals

Semenov, M. A., Mitchell, R. A. C., Whitmore, A. P., Hawkesford, M. J., Parry, M. A. J. and Shewry, P. R. 2012. Shortcomings in wheat yield predictions. Nature Climate Change. 2, pp. 380-382.

An assessment of a new model of dynamic fragmentation of soil with test data

A - Papers appearing in refereed journals

Gregory, A. S., Bird, N. R. A., Watts, C. W. and Whitmore, A. P. 2012. An assessment of a new model of dynamic fragmentation of soil with test data. Soil & Tillage Research. 120, pp. 61-68.

The potential to increase soil carbon stocks through reduced tillage or organic material additions in England and Wales: a case study

A - Papers appearing in refereed journals

Powlson, D. S., Bhogal, A., Chambers, B. J., Coleman, K., Macdonald, A. J., Goulding, K. W. T. and Whitmore, A. P. 2012. The potential to increase soil carbon stocks through reduced tillage or organic material additions in England and Wales: a case study. Agriculture, Ecosystems & Environment. 146, pp. 23-33.

A model to predict the effects of soil structure on denitrification and N2O emission

A - Papers appearing in refereed journals

Laudone, G. M., Matthews, G. P., Bird, N. R. A., Whalley, W. R., Cardenas, L. M. and Gregory, A. S. 2011. A model to predict the effects of soil structure on denitrification and N2O emission. Journal of Hydrology. 409, pp. 283-290.

A comparison of soil and water properties in organic and conventional farming systems in England

A - Papers appearing in refereed journals

Hathaway-Jenkins, L. J., Sakrabani, R., Pearce, B., Whitmore, A. P. and Godwin, R. J. 2011. A comparison of soil and water properties in organic and conventional farming systems in England. Soil Use and Management. 27 (2), pp. 133-142.

Review of the evidence base for the status and change of soil carbon below 15cm from the soil surface in England and Wales (Report on Sub-project 3 of DEFRA Project SP1106)

D1 - Technical reports: non-confidential

Gregory, A. S., Whitmore, A. P., Kirk, G. J. D., Rawlins, B. G., Ritz, K. and Wallace, P. 2011. Review of the evidence base for the status and change of soil carbon below 15cm from the soil surface in England and Wales (Report on Sub-project 3 of DEFRA Project SP1106). Department for Environment, Food and Rural Affairs (DEFRA).

Use of the Taguchi methodology to rank the importance of factors affecting emissions of N2O from incubated agricultural soils

C2 - Non-edited contributions to conferences

Cardenas, L. M., Garcia-Marco, S., Rao Ravella, S., Chadwick, D. R., Hobbs, P. J., Gregory, A. S. and Vallejo, A. 2011. Use of the Taguchi methodology to rank the importance of factors affecting emissions of N2O from incubated agricultural soils.

Effect of soil saturation on denitrification in a grassland soil

C2 - Non-edited contributions to conferences

Cardenas, L. M., Butler, M., Gregory, A. S., Matthews, G. P., Whalley, W. R., Bird, N. R. A., Misselbrook, T. H., Laudone, G. M. and Scholefield, D. 2011. Effect of soil saturation on denitrification in a grassland soil. Abstracts Conference on Nitrogen and Global Change: Key Findings - Future Challenges, Edinburgh, 11-15 April 2011 .

Soil management in relation to sustainable agriculture and ecosystem services

A - Papers appearing in refereed journals

Powlson, D. S., Gregory, P. J., Whalley, W. R., Quinton, J. N., Hopkins, D. W., Whitmore, A. P., Hirsch, P. R. and Goulding, K. W. T. 2011. Soil management in relation to sustainable agriculture and ecosystem services. Food Policy. 36, pp. S72-S87.

Soil organic matters

A - Papers appearing in refereed journals

Powlson, D. S., Brookes, P. C., Whitmore, A. P., Goulding, K. W. T. and Hopkins, D. W. 2011. Soil organic matters. European Journal of Soil Science. 62 (1), pp. 1-4.

Estimating soil strength in the rooting zone of wheat

A - Papers appearing in refereed journals

Whitmore, A. P., Whalley, W. R., Bird, N. R. A., Watts, C. W. and Gregory, A. S. 2011. Estimating soil strength in the rooting zone of wheat. Plant and Soil. 339, pp. 363-375.

Implications for soil properties of removing cereal straw: results from long-term studies

A - Papers appearing in refereed journals

Powlson, D. S., Glendining, M. J., Coleman, K. and Whitmore, A. P. 2011. Implications for soil properties of removing cereal straw: results from long-term studies. Agronomy Journal. 103, pp. 279-287.

Soil carbon sequestration to mitigate climate change: a critical re-examination to identify the true and the false

A - Papers appearing in refereed journals

Powlson, D. S., Whitmore, A. P. and Goulding, K. W. T. 2011. Soil carbon sequestration to mitigate climate change: a critical re-examination to identify the true and the false. European Journal of Soil Science. 62 (1), pp. 42-55.

Pedotransfer functions for estimating total soil nitrogen up to the global scale

A - Papers appearing in refereed journals

Glendining, M. J., Dailey, A. G., Powlson, D. S., Richter, G. M., Catt, J. A. and Whitmore, A. P. 2011. Pedotransfer functions for estimating total soil nitrogen up to the global scale. European Journal of Soil Science. 62 (1), pp. 13-22.

Effects of recent and accumulated livestock manure carbon additions on soil fertility and quality

A - Papers appearing in refereed journals

Bhogal, A., Nicholson, F. A., Young, I., Sturrock, C., Whitmore, A. P. and Chambers, B. J. 2011. Effects of recent and accumulated livestock manure carbon additions on soil fertility and quality. European Journal of Soil Science. 62 (1), pp. 174-181.

Estimating changes in Scottish soil carbon stocks using ECOSSE. II. Application

A - Papers appearing in refereed journals

Smith, J., Gottschalk, P., Bellarby, J., Chapman, S., Lilly, A., Towers, W., Bell, J., Coleman, K., Nayak, D., Richards, M., Hillier, J., Flynn, H., Wattenbach, M., Aitkenhead, M., Yeluripati, J., Farmer, J., Milne, R., Thomson, A., Evans, C., Whitmore, A. P., Falloon, P. and Smith, P. 2010. Estimating changes in Scottish soil carbon stocks using ECOSSE. II. Application. Climate Research. 45, pp. 193-205.

Estimating changes in Scottish soil carbon stocks using ECOSSE. I. Model description and uncertainties

A - Papers appearing in refereed journals

Smith, J., Gottschalk, P., Bellarby, J., Chapman, S., Lilly, A., Towers, W., Bell, J., Coleman, K., Nayak, D., Richards, M., Hillier, J., Flynn, H., Wattenbach, M., Aitkenhead, M., Yeluripati, J., Farmer, J., Milne, R., Thomson, A., Evans, C., Whitmore, A. P., Falloon, P. and Smith, P. 2010. Estimating changes in Scottish soil carbon stocks using ECOSSE. I. Model description and uncertainties. Climate Research. 45, pp. 179-192.

Soil carbon sequestration for mitigating climate change: distinguishing the genuine from the imaginary

B - Book chapters etc edited externally

Powlson, D. S., Whitmore, A. P. and Goulding, K. W. T. 2010. Soil carbon sequestration for mitigating climate change: distinguishing the genuine from the imaginary. in: Hillel, D. and Rosenzweig, C. (ed.) Handbook of climate change and agroecosystems Imperial College Press, London. pp. 393-402

Root water potential integrates discrete soil physical properties to influence ABA signalling during partial rootzone drying

A - Papers appearing in refereed journals

Dodd, I. C., Egea, G., Watts, C. W. and Whalley, W. R. 2010. Root water potential integrates discrete soil physical properties to influence ABA signalling during partial rootzone drying. Journal of Experimental Botany. 61, pp. 3543-3551.

Measurement and simulation of the effect of compaction on the pore structure and saturated hydraulic conductivity of grassland and arable soil

A - Papers appearing in refereed journals

Matthews, G. P., Laudone, G. M., Gregory, A. S., Bird, N. R. A., Matthews, A. G. De G. and Whalley, W. R. 2010. Measurement and simulation of the effect of compaction on the pore structure and saturated hydraulic conductivity of grassland and arable soil. Water Resources Research. 46, p. W05501 (13pp).

Estimating relative hydraulic conductivity from the water release characteristic of a shrinking clay soil

A - Papers appearing in refereed journals

Gregory, A. S., Bird, N. R. A., Whalley, W. R. and Matthews, G. P. 2010. Estimating relative hydraulic conductivity from the water release characteristic of a shrinking clay soil. Soil Science Society of America Journal. 74, pp. 1113-1118.

Deformation and shrinkage effects on the soil water release characteristic

A - Papers appearing in refereed journals

Gregory, A. S., Bird, N. R. A., Whalley, W. R., Matthews, G. P. and Young, I. M. 2010. Deformation and shrinkage effects on the soil water release characteristic. Soil Science Society of America Journal. 74, pp. 1104-1112.

A dual-porous, biophysical void structure model of soil for the understanding of the conditions causing nitrous oxide emission

C2 - Non-edited contributions to conferences

Matthews, G. P., Laudone, G. M., Whalley, W. R., Bird, N. R. A., Gregory, A. S., Cardenas, L. M. and Misselbrook, T. H. 2010. A dual-porous, biophysical void structure model of soil for the understanding of the conditions causing nitrous oxide emission.

Soil management and grass species effects on the hydraulic properties of shrinking soils

A - Papers appearing in refereed journals

Gregory, A. S., Webster, C. P., Watts, C. W., Whalley, W. R., Macleod, C. J. A., Joynes, A., Papadopoulos, A., Haygarth, P. M., Binley, A., Humphreys, M. W., Turner, L. B., Skot, L. and Matthews, G. P. 2010. Soil management and grass species effects on the hydraulic properties of shrinking soils. Soil Science Society of America Journal. 74, pp. 753-761.

Aspects of soil strength and stability in relation to soil management

C2 - Non-edited contributions to conferences

Watts, C. W. 2009. Aspects of soil strength and stability in relation to soil management. Abstracts UK-Brazil Workshop on Soil Quality and Soil Processes, Rio de Janeiro, 20-27 March 2009 .

Soil strength and its influence on crop growth and tillage

C2 - Non-edited contributions to conferences

Watts, C. W. 2009. Soil strength and its influence on crop growth and tillage. Abstracts China-UK Workshop on Soils for Sustainable Agriculture, Beijing, 13-17 October 2009 .

Long-term effects of fertilizing systems on soil microstructure: rheological investigations of Rothamsted soils classifying stiffness degradation

C2 - Non-edited contributions to conferences

Markgraf, W., Horn, R., Watts, C. W. and Whalley, W. R. 2009. Long-term effects of fertilizing systems on soil microstructure: rheological investigations of Rothamsted soils classifying stiffness degradation. ISTRO 18th Triennial Conference Proceedings, Izmir, Turkey, 15-19 June 2009 . pp. T4-025-1-8

Linking plant biology and soil physics to understand hillslope hydrology

C2 - Non-edited contributions to conferences

Macleod, C. J. A., Binley, A., Clark, L. J., Gregory, A. S., Hawkins, S. L., Humphreys, M., Joynes, A., Papdopoulos, A., Skot, L., Stone, A., Turner, L. B., Watts, C. W., Webster, C. P., Whalley, W. R. and Haygarth, P. M. 2009. Linking plant biology and soil physics to understand hillslope hydrology. Abstracts European Geophysical Union General Assembly, Vienna, 19-24 April 2009 .

Efficiency of soil N use by arable crops

C2 - Non-edited contributions to conferences

Macdonald, A. J., Knight, S. M., Glendining, M. J., Whitmore, A. P., Dailey, A. G., Goulding, K. W. T., Sinclair, A. H. and Rees, R. M. 2009. Efficiency of soil N use by arable crops. Abstracts 16th Nitrogen Workshop, Turin, 28 June-1 July 2009 . pp. 233-234

Potential for soil carbon sequestration, but with a full greenhouse gas budget

C1 - Edited contributions to conferences/learned societies

Goulding, K. W. T., Powlson, D. S. and Whitmore, A. P. 2009. Potential for soil carbon sequestration, but with a full greenhouse gas budget. Currie, L. D. and Lindsay, C. L. (ed.) Nutrient Management in a Rapidly Changing World: Proceedings 22nd Annual Workshop of the Fertilizer and Lime Research Centre Massey University, Palmerston North, 11-12 February 2009. . Fertilizer and Lime Research Centre, Massey University. pp. 7-15

Measurement and pore-level modelling of the production of nitrous oxide from soil

C2 - Non-edited contributions to conferences

Matthews, G. P., Laudone, G. M., Whalley, W. R., Bird, N. R. A., Gregory, A. S., Cardenas, L. M. and Misselbrook, T. H. 2009. Measurement and pore-level modelling of the production of nitrous oxide from soil. Abstracts 2nd International Conference on Biohydrology 2009: a Changing Climate for Biology and Soil Hydrology Interactions, Bratislava, 21-24 September 2009 .

Physical effects of soil drying on roots and crop growth

A - Papers appearing in refereed journals

Whitmore, A. P. and Whalley, W. R. 2009. Physical effects of soil drying on roots and crop growth. Journal of Experimental Botany. 60, pp. 2845-2857.

The effect of long-term soil management on the physical and biological resilience of a range of arable and grassland soils in England

A - Papers appearing in refereed journals

Gregory, A. S., Watts, C. W., Griffiths, B. S., Hallett, P. D., Kuan, H. L. and Whitmore, A. P. 2009. The effect of long-term soil management on the physical and biological resilience of a range of arable and grassland soils in England. Geoderma. 153, pp. 172-185.

Investigating the effects of organic and conventional management on soil aggregate stability using X-ray computed tomography

A - Papers appearing in refereed journals

Papadopoulos, A., Bird, N. R. A., Whitmore, A. P. and Mooney, S. J. 2009. Investigating the effects of organic and conventional management on soil aggregate stability using X-ray computed tomography. European Journal of Soil Science. 60 (3), pp. 360-368.

Combining spatial resolutions in the multiscale analysis of soil pore-size distributions

A - Papers appearing in refereed journals

Papadopoulos, A., Whitmore, A. P., White, R. P., Mooney, S. J. and Bird, N. R. A. 2009. Combining spatial resolutions in the multiscale analysis of soil pore-size distributions. Vadose Zone Journal. 8, pp. 227-232.

Modeling dynamic fragmentation of soil

A - Papers appearing in refereed journals

Bird, N. R. A., Watts, C. W., Tarquis, A. M. and Whitmore, A. P. 2009. Modeling dynamic fragmentation of soil. Vadose Zone Journal. 8, pp. 197-201.

Is it possible to increase the sustainability of arable and ruminant agriculture by reducing inputs?

A - Papers appearing in refereed journals

Glendining, M. J., Dailey, A. G., Williams, A. G., Van Evert, F. K., Goulding, K. W. T. and Whitmore, A. P. 2009. Is it possible to increase the sustainability of arable and ruminant agriculture by reducing inputs? Agricultural Systems. 99, pp. 117-125.

Factors affecting the recovery of available soil nitrogen by cereal and oilseed rape crops

C2 - Non-edited contributions to conferences

Knight, S. M., Macdonald, A. J., Glendining, M. J., Whitmore, A. P., Dailey, A. G., Goulding, K. W. T., Sinclair, A. H. and Rees, R. M. 2008. Factors affecting the recovery of available soil nitrogen by cereal and oilseed rape crops. Abstracts AAB Conference on Resource Capture by Crops: Integrated Resources, Nottingham, 10-12 September 2008 .

Discussion of: Schroder, J. J., Neeteson, J. J., 2008. Nutrient management regulations in The Netherlands (with Discussion)

A - Papers appearing in refereed journals

Goulding, K. W. T. and Whitmore, A. P. 2008. Discussion of: Schroder, J. J., Neeteson, J. J., 2008. Nutrient management regulations in The Netherlands (with Discussion). Geoderma. 144, pp. 426-428.

Better estimation of soil nitrogen use efficiency by cereals and oilseed rape (HGCA Research Review No. 68)

D1 - Technical reports: non-confidential

Knight, S., Macdonald, A. J., Glendining, M. J., Whitmore, A. P., Dailey, A. G., Goulding, K. W. T., Sinclair, A. and Rees, B. 2008. Better estimation of soil nitrogen use efficiency by cereals and oilseed rape (HGCA Research Review No. 68). Home Grown Cereals Authority (HGCA) London.

Wetting of agricultural soil measured by a simplified capillary rise technique

A - Papers appearing in refereed journals

Matthews, G. P., Watts, C. W., Powlson, D. S., Price, J. C. and Whalley, W. R. 2008. Wetting of agricultural soil measured by a simplified capillary rise technique. European Journal of Soil Science. 59 (4), pp. 817-823.

The effects of simulated rain on the erosion threshold and biogeochemical properties of intertidal sediments

A - Papers appearing in refereed journals

Tolhurst, T. J., Watts, C. W., Vardy, S., Saunders, J. E., Consalvey, M. C. and Paterson, D. M. 2008. The effects of simulated rain on the erosion threshold and biogeochemical properties of intertidal sediments. Continental Shelf Research. 28, pp. 1217-1230.

Multiscale entropy-based analysis of soil transect data

A - Papers appearing in refereed journals

Tarquis, A. M., Bird, N. R. A., Whitmore, A. P., Cartagena, M. C. and Pachepsky, Y. 2008. Multiscale entropy-based analysis of soil transect data. Vadose Zone Journal. 7, pp. 563-569.

Fractal analysis of pore roughness in images of soil using the slit island method

A - Papers appearing in refereed journals

Papadopoulos, A., Bird, N. R. A., Mooney, S. J. and Whitmore, A. P. 2008. Fractal analysis of pore roughness in images of soil using the slit island method. Vadose Zone Journal. 7, pp. 456-460.

The effect of soil strength on yield of wheat

A - Papers appearing in refereed journals

Whalley, W. R., Watts, C. W., Gregory, A. S., Mooney, S. J., Clark, L. J. and Whitmore, A. P. 2008. The effect of soil strength on yield of wheat. Plant and Soil. 306, pp. 237-247.

Carbon sequestration in European soils through straw incorporation: limitations and alternatives

A - Papers appearing in refereed journals

Powlson, D. S., Riche, A. B., Coleman, K., Glendining, M. J. and Whitmore, A. P. 2008. Carbon sequestration in European soils through straw incorporation: limitations and alternatives. Waste Management. 28, pp. 741-746.

Optimizing nutrient management for farm systems

A - Papers appearing in refereed journals

Goulding, K. W. T., Jarvis, S. and Whitmore, A. P. 2008. Optimizing nutrient management for farm systems. Philosophical Transactions of the Royal Society B-Biological Sciences. 363, pp. 667-680.

Physical resilience of soil to field compaction and the interactions with plant growth and microbial community structure

A - Papers appearing in refereed journals

Gregory, A. S., Watts, C. W., Whalley, W. R., Kuan, H. L., Griffiths, B. S., Hallett, P. D. and Whitmore, A. P. 2007. Physical resilience of soil to field compaction and the interactions with plant growth and microbial community structure. European Journal of Soil Science. 58 (6), pp. 1221-1232.

Intercropping reduces nitrate leaching from under field crops without loss of yield: a modelling study

A - Papers appearing in refereed journals

Whitmore, A. P. and Schroder, J. J. 2007. Intercropping reduces nitrate leaching from under field crops without loss of yield: a modelling study. European Journal of Agronomy. 27, pp. 81-88.

Short-term soil development in a clay soil-forming material used as a landfill restoration cap: a case study

A - Papers appearing in refereed journals

Gregory, A. S. and Vickers, A. W. 2007. Short-term soil development in a clay soil-forming material used as a landfill restoration cap: a case study. Land Contamination and Reclamation. 15, pp. 289-300.

The biological and physical stability and resilience of a selection of Scottish soils to stresses

A - Papers appearing in refereed journals

Kuan, H. L., Hallett, P. D., Griffiths, B. S., Gregory, A. S., Watts, C. W. and Whitmore, A. P. 2007. The biological and physical stability and resilience of a selection of Scottish soils to stresses. European Journal of Soil Science. 58 (3), pp. 811-821.

Determination of the mineralization of nitrogen from composted chicken manure as affected by temperature

A - Papers appearing in refereed journals

Whitmore, A. P. 2007. Determination of the mineralization of nitrogen from composted chicken manure as affected by temperature. Nutrient Cycling in Agroecosystems. 77, pp. 225-232.

Describing the transformation of organic carbon and nitrogen in soil using the MOTOR system

A - Papers appearing in refereed journals

Whitmore, A. P. 2007. Describing the transformation of organic carbon and nitrogen in soil using the MOTOR system. Computers and Electronics in Agriculture. 55, pp. 71-88.

A porous-matrix sensor to measure the matric potential of soil water in the field

A - Papers appearing in refereed journals

Whalley, W. R., Clark, L. J., Take, W. A., Bird, N. R. A., Leech, P. K., Cope, R. E. and Watts, C. W. 2007. A porous-matrix sensor to measure the matric potential of soil water in the field. European Journal of Soil Science. 58 (1), pp. 18-25.

Prediction of the penetrometer resistance of soils with models with few parameters

A - Papers appearing in refereed journals

Whalley, W. R., To, J., Kay, B. D. and Whitmore, A. P. 2007. Prediction of the penetrometer resistance of soils with models with few parameters. Geoderma. 137, pp. 370-377.

The role of clay, organic carbon and long-term management on mouldboard plough draught measured on the Broadbalk wheat experiment at Rothamsted

A - Papers appearing in refereed journals

Watts, C. W., Clark, L. J., Poulton, P. R., Powlson, D. S. and Whitmore, A. P. 2006. The role of clay, organic carbon and long-term management on mouldboard plough draught measured on the Broadbalk wheat experiment at Rothamsted. Soil Use and Management. 22 (4), pp. 334-341.

Using a process model and regression kriging to improve predictions of nitrous oxide emissions from soil

A - Papers appearing in refereed journals

Stacey, K. F., Lark, R. M., Whitmore, A. P. and Milne, A. E. 2006. Using a process model and regression kriging to improve predictions of nitrous oxide emissions from soil. Geoderma. 135, pp. 107-117.

The effects of rain on the erosion threshold of intertidal cohesive sediments

A - Papers appearing in refereed journals

Tolhurst, T. J., Friend, P. L., Watts, C. W., Wakedfield, R., Black, K. S. and Paterson, D. M. 2006. The effects of rain on the erosion threshold of intertidal cohesive sediments. Aquatic Ecology. 40, pp. 533-541.

How far might medium-term weather forecasts improve nitrogen fertiliser use and benefit arable farming in the England and Wales?

A - Papers appearing in refereed journals

Dailey, A. G., Smith, J. U. and Whitmore, A. P. 2006. How far might medium-term weather forecasts improve nitrogen fertiliser use and benefit arable farming in the England and Wales? Agriculture, Ecosystems & Environment. 117, pp. 22-28.

Calculation of the compression index and precompression stress from soil compression test data

A - Papers appearing in refereed journals

Gregory, A. S., Whalley, W. R., Watts, C. W., Bird, N. R. A., Hallett, P. D. and Whitmore, A. P. 2006. Calculation of the compression index and precompression stress from soil compression test data. Soil & Tillage Research. 89, pp. 45-57.

Weekly weather generation for a nitrogen turnover model

A - Papers appearing in refereed journals

Dailey, A. G., Smith, J. U. and Whitmore, A. P. 2005. Weekly weather generation for a nitrogen turnover model. Nutrient Cycling in Agroecosystems. 73, pp. 257-266.

Adverse effects of simulated harvesting of short-rotation willow and poplar coppice on vertical pressures and rut depths

A - Papers appearing in refereed journals

Watts, C. W., Clark, L. J., Chamen, W. C. T. and Whitmore, A. P. 2005. Adverse effects of simulated harvesting of short-rotation willow and poplar coppice on vertical pressures and rut depths. Soil & Tillage Research. 84, pp. 192-199.

Sensing the physical and nutritional status of the root environment in the field: a review of progress and opportunities

A - Papers appearing in refereed journals

Clark, L. J., Gowing, D. J. G., Lark, R. M., Leeds-Harrison, P. B., Miller, A. J., Wells, D. M., Whalley, W. R. and Whitmore, A. P. 2005. Sensing the physical and nutritional status of the root environment in the field: a review of progress and opportunities. The Journal of Agricultural Science. 143, pp. 347-358.

Biological and technical processes that mediate micro-aggregation of clays

A - Papers appearing in refereed journals

Watts, C. W., Whalley, W. R., Brookes, P. C., Devonshire, B. J. and Whitmore, A. P. 2005. Biological and technical processes that mediate micro-aggregation of clays. Soil Science. 170, pp. 573-583.

Climate change and soil functions: consequences of inaction and possible mitigations through land management

C2 - Non-edited contributions to conferences

Powlson, D. S., Falloon, P., Coleman, K., Cox, P., Gaunt, J. L., Shield, I. F., Riche, A. B. and Whitmore, A. P. 2003. Climate change and soil functions: consequences of inaction and possible mitigations through land management. Abstracts ASA-CSSA-SSSA Annual Meeting. Changing Sciences for a Changing World: Building a Broader Vision, Denver, 2-6 November 2003 .

Climate change and soil functions: consequences of inaction and possible mitigations through land management

C2 - Non-edited contributions to conferences

Powlson, D. S., Falloon, P., Coleman, K., Cox, P., Gaunt, J. L., Shield, I. F. and Whitmore, A. P. 2003. Climate change and soil functions: consequences of inaction and possible mitigations through land management. Abstracts ASA-CSSA-SSSA Annual Meeting. Changing Sciences for a Changing World: Building a Broader Vision, Denver, 2-6 November 2003 .

In situ measurements of erosion shear stress and geotechnical shear strength of the intertidal sediments of the experimental managed realignment scheme at Tollesbury, Essex, UK

A - Papers appearing in refereed journals

Watts, C. W., Tolhurst, T. J., Black, K. S. and Whitmore, A. P. 2003. In situ measurements of erosion shear stress and geotechnical shear strength of the intertidal sediments of the experimental managed realignment scheme at Tollesbury, Essex, UK. Estuarine, Coastal and Shelf Science. 58, pp. 611-620.

Aggregation of a soil with different cropping histories following the addition of organic materials

A - Papers appearing in refereed journals

Watts, C. W., Whalley, W. R., Longstaff, D. J., White, Robin P., Brookes, P. C. and Whitmore, A. P. 2001. Aggregation of a soil with different cropping histories following the addition of organic materials. Soil Use and Management. 17 (4), pp. 263-268.

The effect of iron concentration, hindered settling, saturating cation and aggregate density of clays on the size distribution determined by gravitation X-ray sedimentometry

A - Papers appearing in refereed journals

Watts, C. W., Whalley, W. R., Bird, N. R. A. and Ashman, M. R. 2000. The effect of iron concentration, hindered settling, saturating cation and aggregate density of clays on the size distribution determined by gravitation X-ray sedimentometry. European Journal of Soil Science. 51 (2), pp. 305-311.

Simulating trends in soil organic carbon in long-term experiments using the Verberne/MOTOR model

A - Papers appearing in refereed journals

Whitmore, A. P., Klein-Gunnewiek, H., Crocker, G. J., Klir, J., Korschens, M. and Poulton, P. R. 1997. Simulating trends in soil organic carbon in long-term experiments using the Verberne/MOTOR model. Geoderma. 81, pp. 137-151.

A comparison of the performance of nine soil organic matter models using datasets from seven long-term experiments

A - Papers appearing in refereed journals

Smith, P., Smith, J. U., Powlson, D. S., Mcgill, W. B., Arah, J. R. M., Chertov, O. G., Coleman, K., Franko, U., Frolking, S., Jenkinson, D. S., Jensen, L. S., Kelly, R. H., Klein-Gunnewiek, H., Komarov, A. S., Li, C., Molina, J. A. E., Mueller, T., Parton, W. J., Thornley, J. H. M. and Whitmore, A. P. 1997. A comparison of the performance of nine soil organic matter models using datasets from seven long-term experiments. Geoderma. 81 (1-2), pp. 153-225.

Modelling the fate of nitrogen in crop and soil in the years following application of 15N-labelled fertilizer to winter wheat

A - Papers appearing in refereed journals

Bradbury, N. J., Whitmore, A. P., Hart, P. B. S. and Jenkinson, D. S. 1993. Modelling the fate of nitrogen in crop and soil in the years following application of 15N-labelled fertilizer to winter wheat. The Journal of Agricultural Science. 121, pp. 363-379.

Potential contribution of ploughed grassland to nitrate leaching

A - Papers appearing in refereed journals

Whitmore, A. P., Bradbury, N. J. and Johnson, P. A. 1992. Potential contribution of ploughed grassland to nitrate leaching. Agriculture, Ecosystems & Environment. 39, pp. 221-233.

Farming, fertilizers and the nitrate problem

E - Books edited/written by staff member, alone/with others

Addiscott, T. M., Whitmore, A. P. and Powlson, D. S. 1991. Farming, fertilizers and the nitrate problem. CABI International, Wallingford, Oxon (CABI).

A model for calculating the nitrogen requirement of cereals

C2 - Non-edited contributions to conferences

Bradbury, N. J., Whitmore, A. P. and Jenkinson, D. S. 1991. A model for calculating the nitrogen requirement of cereals. Proceedings, 1st Congress of the European Society of Agronomy, Paris, 5-7 December, 1990. pp. Session 2 O 03

Simulation of solute leaching in soils of differing permeabilities

A - Papers appearing in refereed journals

Addiscott, T. M. and Whitmore, A. P. 1991. Simulation of solute leaching in soils of differing permeabilities. Soil Use and Management. 7 (2), pp. 94-102.

A method for assessing the goodness of computer simulation of soil processes

A - Papers appearing in refereed journals

Whitmore, A. P. 1991. A method for assessing the goodness of computer simulation of soil processes. Journal of Soil Science. 42 (2), pp. 289-299.

The Rothamsted soil and crop nitrogen service on Viewdata 1985-1989

A - Papers appearing in refereed journals

Whitmore, A. P., Bland, G. J. and Addiscott, T. M. 1991. The Rothamsted soil and crop nitrogen service on Viewdata 1985-1989. Soil Use and Management. 7 (1), pp. 14-21.

Simulation of nitrogen in soil and winter wheat crops: modelling nitrogen turnover through organic matter

A - Papers appearing in refereed journals

Whitmore, A. P., Coleman, K., Bradbury, N. J. and Addiscott, T. M. 1991. Simulation of nitrogen in soil and winter wheat crops: modelling nitrogen turnover through organic matter. Fertilizer Research. 27, pp. 283-291.

Simulation of nitrogen in soil and winter wheat crops: a management model that makes best use of limited information

A - Papers appearing in refereed journals

Addiscott, T. M., Bailey, N. J., Bland, G. J. and Whitmore, A. P. 1991. Simulation of nitrogen in soil and winter wheat crops: a management model that makes best use of limited information. Fertilizer Research. 27, pp. 305-312.

Simulation of nitrogen in soil and winter wheat crops:modelling nitrogen turnover through organic matter

A - Papers appearing in refereed journals

Whitmore, A. P., Coleman, K., Bradbury, N. J. and Addiscott, T. M. 1991. Simulation of nitrogen in soil and winter wheat crops:modelling nitrogen turnover through organic matter. Fertilizer Research. 27, pp. 283-291.

Simulation of nitrogen in soil and winter wheat crops: a management model that makes the best use of limited information

A - Papers appearing in refereed journals

Addiscott, T. M., Bailey, N. J., Bland, G. J. and Whitmore, A. P. 1991. Simulation of nitrogen in soil and winter wheat crops: a management model that makes the best use of limited information. Fertilizer Research. 27, pp. 305-312.

Computer simulation of nitrogen dynamics in soil.

C1 - Edited contributions to conferences/learned societies

Whitmore, A. P. 1989. Computer simulation of nitrogen dynamics in soil. AFRC Meeting on Plant and Soil Nitrogen Metabolism, Lancaster, 1989, 24..

A simple function for describing the growth and nitrogen uptake of winter cereals.

C1 - Edited contributions to conferences/learned societies

Whitmore, A. P. and Addiscott, T. M. 1988. A simple function for describing the growth and nitrogen uptake of winter cereals. Assessment of nitrogen fertilizer requirement. Proceedings 3rd Meeting NW European Study Group for the Assessment of Nitrogen Fertilizer Requirement, Tune, Denmark, 1988. Ed. N. E. Nielsen.. pp. 137-145

Nitrogen models and soil heterogeneity.

C1 - Edited contributions to conferences/learned societies

Addiscott, T. M. and Whitmore, A. P. 1988. Nitrogen models and soil heterogeneity. Assessment of nitrogen fertilizer requirement. Proceedings 3rd Meeting NW European Study Group for the Assessment of Nitrogen Fertilizer Requirement, Tune, Denmark, 1988. Ed. N. E. Nielsen.. pp. 88-95

A function for describing nitrogen uptake and dry matter production by winter barley crops.

A - Papers appearing in refereed journals

Whitmore, A. P. 1988. A function for describing nitrogen uptake and dry matter production by winter barley crops. Plant and Soil. 111, pp. 53-58.

Computer simulation of the behaviour of nitrogen in soil and crop in the Broadbalk continuous wheat experiment.

B - Book chapters etc edited externally

Whitmore, A. P. and Parry, L. C. 1988. Computer simulation of the behaviour of nitrogen in soil and crop in the Broadbalk continuous wheat experiment. in: Nitrogen efficiency in agricultural soils . Eds D.S. Jenkinson & K.A. Smith. London : Elsevier pp. 418-432

Nitrogen advice for cereals: present realities and future possibilities

A - Papers appearing in refereed journals

Sylvester-Bradley, R., Addiscott, T. M., Vaidyanathan, L. V., Murray, A. W. A. and Whitmore, A. P. 1987. Nitrogen advice for cereals: present realities and future possibilities. Proceedings of the Fertiliser Society. 263, pp. 1-36.

Applications of computer modelling to predict mineral nitrogen in soil and nitrogen in crops.

A - Papers appearing in refereed journals

Whitmore, A. P. and Addiscott, T. M. 1987. Applications of computer modelling to predict mineral nitrogen in soil and nitrogen in crops. Soil Use and Management. 3 (1), pp. 38-43.

Evaluation of a nitrogen leaching/mineralization model for sugar beet.

A - Papers appearing in refereed journals

Whitmore, A. P., Milford, G. F. J. and Armstrong, M. J. 1987. Evaluation of a nitrogen leaching/mineralization model for sugar beet. Plant and Soil. 101, pp. 61-65.

A function for describing nitrogen uptake, dry matter production and rooting by wheat crops.

A - Papers appearing in refereed journals

Whitmore, A. P. and Addiscott, T. M. 1987. A function for describing nitrogen uptake, dry matter production and rooting by wheat crops. Plant and Soil. 101, pp. 51-60.

Computer simulation of changes in soil mineral nitrogen and crop nitrogen during autumn, winter and spring.

A - Papers appearing in refereed journals

Addiscott, T. M. and Whitmore, A. P. 1987. Computer simulation of changes in soil mineral nitrogen and crop nitrogen during autumn, winter and spring. The Journal of Agricultural Science. 109, pp. 141-157.

Application of simple leaching models in heterogeneous soils.

A - Papers appearing in refereed journals

Addiscott, T. M., Heys, P. J. and Whitmore, A. P. 1986. Application of simple leaching models in heterogeneous soils. Geoderma. 38, pp. 185-194.

Putting nitrogen predictions on the screen. The soil and crop nitrogen viewdata service from Rothamsted and ADAS.

G - Articles in popular magazines and other technical publications

Addiscott, T. M. and Whitmore, A. P. 1986. Putting nitrogen predictions on the screen. The soil and crop nitrogen viewdata service from Rothamsted and ADAS.

Computer simulation of winter leaching losses of nitrate from soils cropped with winter wheat.

A - Papers appearing in refereed journals

Whitmore, A. P. and Addiscott, T. M. 1986. Computer simulation of winter leaching losses of nitrate from soils cropped with winter wheat. Soil Use and Management. 2 (1), pp. 26-30.

Looking to the future

G - Articles in popular magazines and other technical publications

Addiscott, T. M. and Whitmore, A. P. 1986. Looking to the future.

Spatial variation of soil-nitrogen and related factors

A - Papers appearing in refereed journals

Whitmore, A. P., Addiscott, T. M., Webster, R. and Thomas, V. H. 1983. Spatial variation of soil-nitrogen and related factors. Journal of the Science of Food and Agriculture. 34 (3), pp. 268-269.