Optimal interpolation and isarithmic mapping of soil properties .4. Sampling strategy

A - Papers appearing in refereed journals

Burgess, T. M., Webster, R. and McBratney, A. B. 1981. Optimal interpolation and isarithmic mapping of soil properties .4. Sampling strategy. Journal of Soil Science. 32 (4), pp. 643-659. https://doi.org/10.1111/j.1365-2389.1981.tb01737.x

Authors	Burgess, T. M., Webster, R. and McBratney, A. B.
Keywords	Soil Science
Year of Publication	1981
Journal	Journal of Soil Science
Journal citation	32 (4), pp. 643-659
Digital Object Identifier (DOI)	https://doi.org/10.1111/j.1365-2389.1981.tb01737.x
Open access	Published as non-open access
ISSN	00224588
	0022-4588
Publisher	Wiley
	British Society of Soil Science (BSSS)

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Frontier-Line Analysis

A - Papers appearing in refereed journals

Webster, R. and Viscarra Rossel, R. A. 2024. Frontier-Line Analysis. Pedometron newsletter of the Pedometrics Commission of the IUSS. 48, pp. 6 - 11.

Frontier-line analysis: a novel pedometric technique for estimating potential carbon sequestration

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Rossel, R. A. V. and Webster, R. 2024. Frontier-line analysis: a novel pedometric technique for estimating potential carbon sequestration. Pedometron newsletter of the Pedometrics Commission of the IUSS. 48, pp. 6-11.

A warming climate will make Australian soil a net emitter of atmospheric CO2

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Rossel, R. A. V., Zhang, M., Behrens, T. and Webster, R. 2024. A warming climate will make Australian soil a net emitter of atmospheric CO2. npj climate and atmospheric science. 7, p. 79. https://doi.org/10.1038/s41612-024-00619-z

How much organic carbon could the soil store? The carbon sequestration potential of Australian soil

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Rossel, R. A. V., Webster, R., Zhang, M., Shen, Z., Dixon, K., Wang, Y. -. and Walden, L. 2024. How much organic carbon could the soil store? The carbon sequestration potential of Australian soil. Global Change Biology. 30 (1), p. e17053. https://doi.org/10.1111/gcb.17053

Uncertainty assessment of spatial soil information

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Heuvelink, G. B. M and Webster, R. 2023. Uncertainty assessment of spatial soil information. Encyclopedia of soils in the environment. 4, pp. 671-683. https://doi.org/10.1016/B978-0-12-822974-3.00174-9

Statistical inferential testing

A - Papers appearing in refereed journals

Webster, R. 2023. Statistical inferential testing. Encyclopedia of Mathematical Geosciences. pp. 1439-1443. https://doi.org/10.1007/978-3-030-85040-1_459

Unbalanced analysis of variance

B - Book chapters etc edited externally

Webster, R. 2023. Unbalanced analysis of variance. in: Daya Sagar, B. S, Cheng, Q., McKinley, J. and Agterberg, F. (ed.) Encyclopedia of Mathematical Geosciences Springer. pp. 1579-1583

A loss function to evaluate agricultural decision‑making under uncertainty: a case study of soil spectroscopy

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Breure, T., Haefele, S. M., Hannam, J. A., Corstanje, R., Webster, R., Moreno-Rojas, S. and Milne, A. E. 2022. A loss function to evaluate agricultural decision‑making under uncertainty: a case study of soil spectroscopy. Precision Agriculture. 23, pp. 1333 - 1353. https://doi.org/10.1007/s11119-022-09887-2

Early Detection and Spread of Tomato Powdery Mildew (TPM) in Commercial Greenhouses

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Sokolidi, A., Webster, R., Milne, A. E., Clark, S. J., Clarkson, J., Bielik M., Morley, P. and West, J. S. 2022. Early Detection and Spread of Tomato Powdery Mildew (TPM) in Commercial Greenhouses. Phytopathology. 112 (11), pp. 49-49.

Spatial characteristics of the fungus powdery mildew (Erysiphe neolycopersici) on tomatoes and its spread in industrial greenhouses

A - Papers appearing in refereed journals

Sokolidi, A., Webster, R., Milne, A. E., Bielik, M., Morley, P., Clarkson, J. P. and West, J. S. 2022. Spatial characteristics of the fungus powdery mildew (Erysiphe neolycopersici) on tomatoes and its spread in industrial greenhouses. Biostatistics. 1 (1), pp. 18-30.

Statistics in soil science

A - Papers appearing in refereed journals

Webster, R. 2022. Statistics in soil science. Reference module in earth systems and environmental sciences. https://doi.org/10.1016/B978-0-12-822974-3.00002-1

Early Detection and Spread of Tomato Powdery Mildew (TPM) in Commercial Greenhouses

Conference poster

Diffuse reflectance spectroscopy for estimating soil properties: A technology for the 21st century

A - Papers appearing in refereed journals

Rossel, R. A. V., Behrens, T., Ben-Dor, E., Chabrillat, S., Dematte, J. A. M., Ge, Y., Gomez, C., Guerrero, C., Peng, Y., Ramirez-Lopez, L., Shi, Z., Stenberg, B., Webster, R., Winowiecki, L. and Shen, Z. 2022. Diffuse reflectance spectroscopy for estimating soil properties: A technology for the 21st century. European Journal of Soil Science. 73 (4), p. e13271. https://doi.org/10.1111/ejss.13271

Spatial statistics and soil mapping: A blossoming partnership under pressure

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Heuvelink, G. B. M. and Webster, R. 2022. Spatial statistics and soil mapping: A blossoming partnership under pressure. Spatial Statistics. 50, p. 100639. https://doi.org/10.1016/j.spasta.2022.100639

Distribution of heavy metals polluting the soil near an abandoned mine in Northwestern Mexico

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Gonzalez-Mendez, B., Webster, R., Loredo-Portales, R., Molina-Freaner, F. and Djellouli, R. 2022. Distribution of heavy metals polluting the soil near an abandoned mine in Northwestern Mexico. Environmental Earth Sciences. 81 (6), p. 176. https://doi.org/10.1007/s12665-022-10285-0

The cost-effectiveness of reflectance spectroscopy for estimating soil organic carbon

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Li, S., Viscarra Rossel, R. A. and Webster, R. 2022. The cost-effectiveness of reflectance spectroscopy for estimating soil organic carbon. European Journal of Soil Science. 73 (1), p. e13202. https://doi.org/10.1111/ejss.13202

Geostatistics : Modelling spatial variation

B - Book chapters etc edited externally

Webster, R. 2021. Geostatistics : Modelling spatial variation. in: Encyclopedia of Soils in the Environment Elsevier.

Predicting the growth of lettuce from soil infrared reflectance spectra: the potential for crop management

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Breure, T. S., Milne, A. E., Webster, R., Haefele, S. M., Hannam, J. A., Moreno-Rojas, S. and Corstanje, R. 2021. Predicting the growth of lettuce from soil infrared reflectance spectra: the potential for crop management. Precision Agriculture. 22, p. 226–248. https://doi.org/10.1007/s11119-020-09739-x

Spatial and Temporal Stability of Weed Patches in Cereal Fields under Direct Drilling and Harrow Tillage

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Izquierdo, J., Milne, A. E., Recasens, J., Royo-Esnal, A., Torra, J., Webster, R. and Baraibar, B. 2020. Spatial and Temporal Stability of Weed Patches in Cereal Fields under Direct Drilling and Harrow Tillage. Agronomy. 10 (4), p. 452. https://doi.org/10.3390/agronomy10040452

A multivariate method for matching soil classiﬁcation systems, with an Australian example

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Frost damage to maize in northeast India: assessment and estimated loss of yield by hyperspectral proximal remote sensing

A - Papers appearing in refereed journals

Choudhury, B. U., Webster, R., Sharma, V., Goswami, J., Meetei, T. T., Krishnappa, R. and Raju, P. L. N. 2019. Frost damage to maize in northeast India: assessment and estimated loss of yield by hyperspectral proximal remote sensing. Journal of Applied Remote Sensing. 13 (4), p. 044527. https://doi.org/10.1117/1.JRS.13.044527

Analysis of variance in soil research: Examining the assumptions

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Webster, R. and Lark, R. M. 2019. Analysis of variance in soil research: Examining the assumptions. European Journal of Soil Science. 70 (5), pp. 990-1000. https://doi.org/10.1111/ejss.12804

Landmark Papers: No. 8 Burgess, T.M. & Webster, R. 1980. Optimal interpolation and isarithmic mapping of soil properties. I. The semi-variogram and punctual kriging. Journal of Soil Science, 31, 315–331 Reflections by R. Webster

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Webster, R. 2019. Landmark Papers: No. 8 Burgess, T.M. & Webster, R. 1980. Optimal interpolation and isarithmic mapping of soil properties. I. The semi-variogram and punctual kriging. Journal of Soil Science, 31, 315–331 Reflections by R. Webster. European Journal of Soil Science. 2019 (70), pp. 2-6. https://doi.org/10.1111/ejss.12750

Optimal interpolation and isarithmic mapping of soil properties .1. The semi-variogram and punctual kriging

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A high-resolution map of soil pH in China made by hybrid modelling of sparse soil data and environmental covariates and its implications for pollution

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Chen, S., Liang, Z., Webster, R., Zhang, G., Zhou, Y., Teng, H., Hi, B., Arrouays, D. and Shi, Z. 2019. A high-resolution map of soil pH in China made by hybrid modelling of sparse soil data and environmental covariates and its implications for pollution. Science of the Total Environment. 655, pp. 273-283. https://doi.org/10.1016/j.scitotenv.2018.11.230

Baseline map of soil organic carbon in Tibet and its uncertainty in the 1980s

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Zhou, Y., Webster, R., Viscara Rossel, R. A., Shi, Z. and Chen, S. 2019. Baseline map of soil organic carbon in Tibet and its uncertainty in the 1980s. Geoderma. 334, pp. 123-133. https://doi.org/10.1016/j.geoderma.2018.07.037

Analysis of variance in soil research : let the analysis fit the action

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Webster, R. and Lark, R. M. 2018. Analysis of variance in soil research : let the analysis fit the action. European Journal of Soil Science. 69 (1), pp. 216-139. https://doi.org/10.1111/ejss.12511

Spatial Analysis of Digital Imagery of Weeds in a Maize Crop

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San-Martin-Hernandez, C., Milne, A. E., Webster, R., Storkey, J., Andujar, D., Fernandez-Quintanilla, C. and Dorado, J. 2018. Spatial Analysis of Digital Imagery of Weeds in a Maize Crop. ISPRS International Journal of Geo-Information. 7 (2), pp. 61-81. https://doi.org/10.3390/ijgi7020061

Defining the habitat niche of Alopecurus myosuroides at the field scale

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Metcalfe, H., Milne, A. E., Webster, R., Lark, R. M., Murdoch, A. J., Kanelo, L. and Storkey, J. 2018. Defining the habitat niche of Alopecurus myosuroides at the field scale. Weed Research. 58 (3), pp. 165-176. https://doi.org/10.1111/wre.12300

Changes in soil redox potential in response to flood irrigation with waste water in central Mexico

A - Papers appearing in refereed journals

Gozalez-Mendez, B., Webster, R., Fiedler, S. and Siebe, C. 2017. Changes in soil redox potential in response to flood irrigation with waste water in central Mexico. European Journal of Soil Science. 68 (6), pp. 886-896. https://doi.org/10.1111/ejss.12484

Fate of 210Pb ex fallout in soil under forest and scrub of the central Spanish Pre-Pyrenees

A - Papers appearing in refereed journals

Gaspar, L., Webster, R. and Navas, A. 2017. Fate of 210Pb ex fallout in soil under forest and scrub of the central Spanish Pre-Pyrenees. European Journal of Soil Science. 68 (3), pp. 259-269. https://doi.org/10.1111/ejss.12427

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 (1 April), pp. 163-174. https://doi.org/10.1016/j.compag.2017.02.002

Acid drainage from coal mining: Effect on paddy soil and productivity of rice

A - Papers appearing in refereed journals

Choudhury, B. U., Malang, A., Webster, R., Mohapatra, K. P., Verma, B. C., Kumar, M., Das, A., Islam, M. and Hazarika, S. 2017. Acid drainage from coal mining: Effect on paddy soil and productivity of rice. Science of the Total Environment. 583 (1 April), pp. 344-351. https://doi.org/10.1016/j.scitotenv.2017.01.074

Replicate and randomize, or lie

A - Papers appearing in refereed journals

Webster, R. 2017. Replicate and randomize, or lie. Environmental Microbiology. 19 (1), pp. 25-28. https://doi.org/10.1111/1462-2920.13533

Change from paddy rice to vegetable growing changes nitrogen-cycling microbial communities and their variation with depth in the soil

A - Papers appearing in refereed journals

Qin, H. L., Zhang, Z. X., Lu, J., Zhu, Y. J., Webster, R., Liu, X. L., Yuan, H. Z., Hou, H. J., Chen, C. L. and Wei, W. X. 2016. Change from paddy rice to vegetable growing changes nitrogen-cycling microbial communities and their variation with depth in the soil. European Journal of Soil Science. 67 (5), pp. 650-658. https://doi.org/10.1111/ejss.12365

Modelling the electrical conductivity of soil in the Yangtze delta in three dimensions

A - Papers appearing in refereed journals

Li, H. Y., Marchant, B. P. and Webster, R. 2016. Modelling the electrical conductivity of soil in the Yangtze delta in three dimensions. Geoderma. 269, pp. 119-125. https://doi.org/10.1016/j.geoderma.2016.01.028

Designing a sampling scheme to reveal correlations between weeds and soil properties at multiple spatial scales

A - Papers appearing in refereed journals

Metcalfe, H., Milne, A. E., Webster, R., Lark, R. M., Murdoch, A. J. and Storkey, J. 2016. Designing a sampling scheme to reveal correlations between weeds and soil properties at multiple spatial scales. Weed Research. 56 (1), pp. 1-13. https://doi.org/10.1111/wre.12184

Basic steps in geostatistics: the variogram and kriging

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

Oliver, M. A. and Webster, R. 2015. Basic steps in geostatistics: the variogram and kriging. London, Springer-Verlag.

Technological developments for spatial prediction of soil properties, and Daniel Krige's influence on it

A - Papers appearing in refereed journals

Webster, R. 2015. Technological developments for spatial prediction of soil properties, and Daniel Krige's influence on it. Journal of the Southern African Institute of Mining and Metallurgy. 115 (1), pp. 165-172.

In situ measurements of organic carbon in soil profiles using vis-NIR spectroscopy on the Qinghai-Tibet plateau

A - Papers appearing in refereed journals

Li, S., Shi, Z., Chen, S., Ji, W., Zhou, L., Yu, W. and Webster, R. 2015. In situ measurements of organic carbon in soil profiles using vis-NIR spectroscopy on the Qinghai-Tibet plateau. Environmental Science & Technology. 49, pp. 4980-4987. https://doi.org/10.1021/es504272x

Mapping soil salinity in the Yangtze delta: REML and universal kriging (E-BLUP) revisited

A - Papers appearing in refereed journals

Li, H. Y., Webster, R. and Shi, Z. 2015. Mapping soil salinity in the Yangtze delta: REML and universal kriging (E-BLUP) revisited. Geoderma. 237-238, pp. 71-77. https://doi.org/10.1016/j.geoderma.2014.08.008

Exploring the spatial variation in the fertilizer-nitrogen requirement of wheat within fields

A - Papers appearing in refereed journals

Kindred, D. R., Milne, A. E., Webster, R., Marchant, B. P. and Sylvester-Bradley, R. 2015. Exploring the spatial variation in the fertilizer-nitrogen requirement of wheat within fields. The Journal of Agricultural Science. 153 (1), pp. 25-41. https://doi.org/10.1017/S0021859613000919

Short-term emissions of CO2 and N2O in response to periodic flood irrigation with waste water in the Mezquital Valley of Mexico

A - Papers appearing in refereed journals

Gonzalez-Mendez, B., Webster, R., Fiedler, S., Loza-Reyes, E., Harnandez, J. M., Ruiz-Suarez, L. G. and Siebe, C. 2015. Short-term emissions of CO2 and N2O in response to periodic flood irrigation with waste water in the Mezquital Valley of Mexico. Atmospheric Environment. 101, pp. 116-124. https://doi.org/10.1016/j.atmosenv.2014.10.048

Understanding the scale-dependence of the relations between soil conditions and weed density and the implications for precision management of weeds

A - Papers appearing in refereed journals

Metcalfe, H., Milne, A. E., Murdoch, A., Webster, R., Lark, R. M. and Storkey, J. 2014. Understanding the scale-dependence of the relations between soil conditions and weed density and the implications for precision management of weeds. Aspects of Applied Biology. 127, pp. 165-171.

Baseline map of organic carbon in Australian soil to support national carbon accounting and monitoring under climate change

A - Papers appearing in refereed journals

Viscarra Rossell, R. A., Webster, R., Bui, E. N. and Baldock, J. A. 2014. Baseline map of organic carbon in Australian soil to support national carbon accounting and monitoring under climate change. Global Change Biology. 20 (9), pp. 2953-2970. https://doi.org/10.1111/gcb.12569

Air temperature, relative humidity, climate regionalization and thermal comfort of Nigeria

A - Papers appearing in refereed journals

Eludoyin, O. M., Adelekan, I. O., Webster, R. and Eludoyin, A. O. 2014. Air temperature, relative humidity, climate regionalization and thermal comfort of Nigeria. International Journal of Climatology. 34 (6), pp. 2000-2018. https://doi.org/10.1002/joc.3817

Mapping gamma radiation and its uncertainty from weathering products in a Tasmanian landscape with a proximal sensor and random forest kriging

A - Papers appearing in refereed journals

Viscarra Rossel, R. A., Webster, R. and Kidd, D. 2014. Mapping gamma radiation and its uncertainty from weathering products in a Tasmanian landscape with a proximal sensor and random forest kriging. Earth Surface Processes And Landforms. 39 (6), pp. 735-748. https://doi.org/10.1002/esp.3476

Spatial variation of trace elements in the peri-urban soil of Madrid

A - Papers appearing in refereed journals

Vazquez De La Cueva, A., Marchant, B. P., Quintana, J. R., De Santiago, A., Lafuente, A. L. and Webster, R. 2014. Spatial variation of trace elements in the peri-urban soil of Madrid. Journal of Soils and Sediments. 14, pp. 78-88. https://doi.org/10.1007/s11368-013-0772-5

A tutorial guide to geostatistics: computing and modelling variograms and kriging

A - Papers appearing in refereed journals

Oliver, M. A. and Webster, R. 2014. A tutorial guide to geostatistics: computing and modelling variograms and kriging. Catena. 113, pp. 56-69. https://doi.org/10.1016/j.catena.2013.09.006

Spatial analysis of gilgai patterns

G - Articles in popular magazines and other technical publications

Webster, R., Milne, A. E. and Lark, R. M. 2013. Spatial analysis of gilgai patterns. Pedometron. 33, pp. 4-9.

Spatial heterogeneity of tectonic features in the area between Qatar-Kazerun and the Minab faults, the southeast of the Zagros fold-and-thrust belt, Iran

A - Papers appearing in refereed journals

Zadeh, R. M., Sarkarinejad, K. and Webster, R. 2013. Spatial heterogeneity of tectonic features in the area between Qatar-Kazerun and the Minab faults, the southeast of the Zagros fold-and-thrust belt, Iran. Geoinformatics and Geostatistics: an Overview. 1, p. 3. https://doi.org/10.4172/2327-4581.1000109

Rational management decisions from uncertain spatial data

B - Book chapters etc edited externally

Dailey, A. G. and Webster, R. 2013. Rational management decisions from uncertain spatial data. in: Oliver, M. A., Marchant, B. P. and Bishop, T. F. A. (ed.) Precision agriculture for sustainability and environmental protection George Routledge & Sons London. pp. 61-81

Fluctuations in method-of-moments variograms caused by clustered sampling and their elimination by declustering and residual maximum likelihood estimation

A - Papers appearing in refereed journals

Marchant, B. P., Viscarra Rossel, R. A. and Webster, R. 2013. Fluctuations in method-of-moments variograms caused by clustered sampling and their elimination by declustering and residual maximum likelihood estimation. European Journal of Soil Science. 64 (4), pp. 401-409. https://doi.org/10.1111/ejss.12029

Field sampling for environmental science and management

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

Webster, R. and Lark, R. M. 2013. Field sampling for environmental science and management. Routledge Abingdon.

Two-dimensional spatial analysis of the seismic b -value and the Bouguer gravity anomaly in the southeastern part of the Zagros Fold-and-Thrust Belt, Iran: tectonic implications

A - Papers appearing in refereed journals

Sarkarinejad, K., Zadeh, R. M. and Webster, R. 2013. Two-dimensional spatial analysis of the seismic b -value and the Bouguer gravity anomaly in the southeastern part of the Zagros Fold-and-Thrust Belt, Iran: tectonic implications. Journal Of Asian Earth Sciences. 62, pp. 308-316. https://doi.org/10.1016/j.jseaes.2012.10.010

Mapping the three-dimensional variation of soil salinity in a rice-paddy soil

A - Papers appearing in refereed journals

Li, H. Y., Shi, Z., Webster, R. and Triantafilis, J. 2013. Mapping the three-dimensional variation of soil salinity in a rice-paddy soil. Geoderma. 195-196, pp. 31-41. https://doi.org/10.1016/j.geoderma.2012.11.005

Predicting soil properties from the Australian soil visible-near infrared spectroscopic database

A - Papers appearing in refereed journals

Viscara Rossel, R. A. and Webster, R. 2012. Predicting soil properties from the Australian soil visible-near infrared spectroscopic database. European Journal of Soil Science. 63 (6), pp. 848-860. https://doi.org/10.1111/j.1365-2389.2012.01495.x

Spatial multivariate classification of an arable field into compact management zones based on past crop yields

A - Papers appearing in refereed journals

Milne, A. E., Webster, R., Ginsburg, D. and Kindred, D. 2012. Spatial multivariate classification of an arable field into compact management zones based on past crop yields. Computers and Electronics in Agriculture. 80, pp. 17-30. https://doi.org/10.1016/j.compag.2011.10.007

Discrimination of Australian soil horizons and classes from their visible-near infrared spectra

A - Papers appearing in refereed journals

Viscarra Rossel, R. A. and Webster, R. 2011. Discrimination of Australian soil horizons and classes from their visible-near infrared spectra. European Journal of Soil Science. 62 (4), pp. 637-647. https://doi.org/10.1111/j.1365-2389.2011.01356.x

Ginninderra revisited: the contribution of B. E. Butler to statistical pedology

A - Papers appearing in refereed journals

Webster, R. 2011. Ginninderra revisited: the contribution of B. E. Butler to statistical pedology. Soil Research. 49, pp. 203-211. https://doi.org/10.1071/SR10174

Landscape-scale controls on the spatial distribution of caesium 137: a study based on an airborne geophysical survey across Northern Ireland

A - Papers appearing in refereed journals

Rawlins, B. G., Scheib, C., Beamish, D., Webster, R., Tyler, A. N. and Young, M. E. 2011. Landscape-scale controls on the spatial distribution of caesium 137: a study based on an airborne geophysical survey across Northern Ireland. Earth Surface Processes And Landforms. 36 (2), pp. 158-169. https://doi.org/10.1002/esp.2026

Mapping the three-dimensional variation of electrical conductivity in a paddy rice soil

C2 - Non-edited contributions to conferences

Li, H. Y., Shi, Z., Webster, R. and Guo, Y. 2010. Mapping the three-dimensional variation of electrical conductivity in a paddy rice soil. Abstracts 19th World Congress of Soil Science: Soil Solutions for a Changing World, Brisbane, 1-6 August 2010 . pp. 95-98

Geostatistics in Genstat

B - Book chapters etc edited externally

Webster, R. 2010. Geostatistics in Genstat. in: Oliver, M. A. (ed.) Geostatistical applications for precision agriculture Springer, Berlin. pp. 313-315

Weeds, worms and geostatistics

B - Book chapters etc edited externally

Webster, R. 2010. Weeds, worms and geostatistics. in: Oliver, M. A. (ed.) Geostatistical applications for precision agriculture Springer, Berlin. pp. 221-241

An early history of ordination in soil science

A - Papers appearing in refereed journals

Webster, R. 2010. An early history of ordination in soil science. Pedometron. 29, pp. 20-24.

Spectral and wavelet analysis of gilgai patterns from air photography

A - Papers appearing in refereed journals

Milne, A. E., Webster, R. and Lark, R. M. 2010. Spectral and wavelet analysis of gilgai patterns from air photography. Australian journal of soil research. 48, pp. 309-325. https://doi.org/10.1071/SR09189

Discriminating between organic matter in soil from grass and forest by near-infrared spectroscopy

A - Papers appearing in refereed journals

Ertlen, D., Schwartz, D., Trautmann, M., Webster, R. and Brunet, D. 2010. Discriminating between organic matter in soil from grass and forest by near-infrared spectroscopy. European Journal of Soil Science. 61 (2), pp. 207-216. https://doi.org/10.1111/j.1365-2389.2009.01219.x

Estimating particle-size fractions of soil dominated by silicate minerals from geochemistry

A - Papers appearing in refereed journals

Rawlins, B. G., Webster, R., Tye, A. M., Lawley, R. and O'hara, S. L. 2009. Estimating particle-size fractions of soil dominated by silicate minerals from geochemistry. European Journal of Soil Science. 60 (1), pp. 116-126. https://doi.org/10.1111/j.1365-2389.2008.01112.x

El muestreo en los estudios del suelo

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

Webster, R. 2008. El muestreo en los estudios del suelo. Universidad Nacional Autonoma de Mexico, Coyoacan, Mexico.

Mapping soil salinity from sample data and remote sensing in the former Lake Texcoco, Mexico

B - Book chapters etc edited externally

Fernandez Buces, N., Siebe, C., Palacio Prieto, J. L. and Webster, R. 2008. Mapping soil salinity from sample data and remote sensing in the former Lake Texcoco, Mexico. in: Metternicht, G. and Zinck, J. A. (ed.) Remote sensing of soil salinization: impact on land management CRC Press, Boca Raton, Florida. pp. 291-304

Soil science and geostatistics (an extended and improved translation of the text published in Russian in 'Geostatistics and soil geography', Moscow, Nauka Publ. p8-18)

B - Book chapters etc edited externally

Webster, R. 2008. Soil science and geostatistics (an extended and improved translation of the text published in Russian in 'Geostatistics and soil geography', Moscow, Nauka Publ. p8-18). in: Montanarella, L., Krasilnikov, P. and Carre, F. (ed.) Soil geography and geostatistics: concepts and applications EUR 23290 European Commission, Luxembourg. pp. 1-11

Mapping aerial metal deposition in metropolitan areas from tree bark: a case study in Sheffield, England

A - Papers appearing in refereed journals

Schelle, E., Rawlins, B. G., Lark, R. M., Webster, R., Staton, I. and Mcleod, C. W. 2008. Mapping aerial metal deposition in metropolitan areas from tree bark: a case study in Sheffield, England. Environmental Pollution. 155, pp. 164-173. https://doi.org/10.1016/j.envpol.2007.10.036

Geostatistics

B - Book chapters etc edited externally

Webster, R. 2008. Geostatistics. in: Webster, R., Ringrose-Voase, A. J., Mckenzie, N. J. and Grundy, M. J. (ed.) Guidelines for surveying soil and land resources, 2nd ed CSIRO, Melbourne, Australia. pp. 369-382

Guidelines for surveying soil and land resources, 2nd ed

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

Mckenzie, N. J., Grundy, M. J. and Webster, R. Ringrose-Voase, A. J. (ed.) 2008. Guidelines for surveying soil and land resources, 2nd ed. CSIRO, Melbourne, Australia.

Geostatistics for environmental scientists

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

Webster, R. and Oliver, M. A. 2007. Geostatistics for environmental scientists. John Wiley & Sons Chichester, West Sussex.

Soil science and geostatistics (in Russian)

B - Book chapters etc edited externally

Webster, R. 2007. Soil science and geostatistics (in Russian). in: Krasilnikov, P. V. (ed.) Geostatistics and soil geography Nauka, Moscow. pp. 9-18

Understanding airborne radiometric survey signals across part of eastern England

A - Papers appearing in refereed journals

Rawlins, B. G., Lark, R. M. and Webster, R. 2007. Understanding airborne radiometric survey signals across part of eastern England. Earth Surface Processes And Landforms. 32, pp. 1503-1515. https://doi.org/10.1002/esp.1468

Mycorrhizal inoculum potential of arbuscular mycorrhizal fungi in soils irrigated with wastewater for various lengths of time, as affected by heavy metals and available P

A - Papers appearing in refereed journals

Ortega-Larrocea, M. P., Siebe, C., Estrada, A. and Webster, R. 2007. Mycorrhizal inoculum potential of arbuscular mycorrhizal fungi in soils irrigated with wastewater for various lengths of time, as affected by heavy metals and available P. Applied Soil Ecology. 37, pp. 129-138. https://doi.org/10.1016/j.apsoil.2007.06.002

Using expert knowledge with control of false discovery rate to select regressors for prediction of soil properties

A - Papers appearing in refereed journals

Lark, R. M., Bishop, T. F. A. and Webster, R. 2007. Using expert knowledge with control of false discovery rate to select regressors for prediction of soil properties. Geoderma. 138 (1-2), pp. 65-78. https://doi.org/10.1016/j.geoderma.2006.10.015

Analysis of variance, inference, multiple comparisons and sampling effects in soil research

A - Papers appearing in refereed journals

Webster, R. 2007. Analysis of variance, inference, multiple comparisons and sampling effects in soil research. European Journal of Soil Science. 58 (1), pp. 74-82. https://doi.org/10.1111/j.1365-2389.2006.00801.x

The Kalman filter for the pedologist's tool kit (retraction of, vol 57, pg 677, 2006)

A - Papers appearing in refereed journals

Webster, R. and Heuvelink, G. B. M. 2006. The Kalman filter for the pedologist's tool kit (retraction of, vol 57, pg 677, 2006). European Journal of Soil Science. 57 (6), pp. 757-757. https://doi.org/10.1111/j.1365-2389.2006.00878.x

The Kalman filter for the pedologist's tool kit

A - Papers appearing in refereed journals

Webster, R. and Heuvelink, G. B. M. 2006. The Kalman filter for the pedologist's tool kit. European Journal of Soil Science. 57 (5), pp. 758-773. https://doi.org/10.1111/j.1365-2389.2005.00759.x

Estimating the spatial scales of regionalized variables by nested sampling, hierarchical analysis of variance and residual maximum likelihood

A - Papers appearing in refereed journals

Webster, R., Welham, S. J., Potts, J. M. and Oliver, M. A. 2006. Estimating the spatial scales of regionalized variables by nested sampling, hierarchical analysis of variance and residual maximum likelihood. Computers & Geosciences. 32, pp. 1320-1333. https://doi.org/10.1016/j.cageo.2005.12.002

The use of soil survey data to determine the magnitude and extent of historic metal deposition related to atmospheric smelter emissions across Humberside, UK

A - Papers appearing in refereed journals

Rawlins, B. G., Lark, R. M., Webster, R. and O'donnell, K. E. 2006. The use of soil survey data to determine the magnitude and extent of historic metal deposition related to atmospheric smelter emissions across Humberside, UK. Environmental Pollution. 143, pp. 416-426. https://doi.org/10.1016/j.envpol.2005.12.010

Geostatistical mapping of geomorphic variables in the presence of trend

A - Papers appearing in refereed journals

Lark, R. M. and Webster, R. 2006. Geostatistical mapping of geomorphic variables in the presence of trend. Earth Surface Processes And Landforms. 31 (7), pp. 862-874. https://doi.org/10.1002/esp.1296

Statistics in soil science

G - Articles in popular magazines and other technical publications

Webster, R. 2005. Statistics in soil science.

Spatial variation, soil properties

G - Articles in popular magazines and other technical publications

Webster, R. 2005. Spatial variation, soil properties.

Analysing soil variation in two dimensions with the discrete wavelet transform

A - Papers appearing in refereed journals

Lark, R. M. and Webster, R. 2004. Analysing soil variation in two dimensions with the discrete wavelet transform. European Journal of Soil Science. 55 (4), pp. 777-797. https://doi.org/10.1111/j.1365-2389.2004.00630.x

Estimating the scales of variation for monitoring soil

C1 - Edited contributions to conferences/learned societies

Webster, R. 2004. Estimating the scales of variation for monitoring soil. Halm, D. and Grathwohl, P. (ed.) Proceedings 2nd International Workshop on Integrated Soil and Water Protection: Risks from Diffuse Pollution. (Tubinger Geowissenschaftliche Arbeiten, C80) . pp. 81-85

Spatial analysis of semi-arid patchy vegetation by the cumulative distribution of patch boundary spacings and transition probabilities

A - Papers appearing in refereed journals

Webster, R. and Maestre, F. T. 2004. Spatial analysis of semi-arid patchy vegetation by the cumulative distribution of patch boundary spacings and transition probabilities. Environmental And Ecological Statistics. 11, pp. 257-281.

Wavelets and the generalization of the variogram

A - Papers appearing in refereed journals

Bosch, E. H., Oliver, M. A. and Webster, R. 2004. Wavelets and the generalization of the variogram. Mathematical geology. 36 (2), pp. 147-186. https://doi.org/10.1023/B:MATG.0000020469.51320.5d

The influence of parent material on topsoil geochemistry in eastern England

A - Papers appearing in refereed journals

Rawlins, B. G., Webster, R. and Lister, T. R. 2003. The influence of parent material on topsoil geochemistry in eastern England. Earth Surface Processes And Landforms. 28 (13), pp. 1398-1409. https://doi.org/10.1002/esp.507

Geostatistical analysis of arsenic concentration in groundwater in Bangladesh using disjunctive kriging

A - Papers appearing in refereed journals

Gaus, I., Kinniburgh, D. G., Talbot, J. C. and Webster, R. 2003. Geostatistical analysis of arsenic concentration in groundwater in Bangladesh using disjunctive kriging. Environmental Geology. 44, pp. 939-948.

Let's re-write the scientific paper

G - Articles in popular magazines and other technical publications

Webster, R. 2003. Let's re-write the scientific paper. European Journal of Soil Science. 54, pp. 215-218.

Mapping infestations of potato cyst nematodes and the potential for spatially varying application of nematicides

A - Papers appearing in refereed journals

Evans, K., Webster, R., Barker, A. D. P., Halford, P. D., Russell, M. D., Stafford, J. and Griffin, S. 2003. Mapping infestations of potato cyst nematodes and the potential for spatially varying application of nematicides. Precision Agriculture. 4, pp. 149-162.

Spatial and temporal modelling

B - Book chapters etc edited externally

Webster, R. 2002. Spatial and temporal modelling. in: Payne, R. W. (ed.) Guide to GenStat release 6.1. Part 2. Statistics VSN International, Hemel Hempstead. pp. 779-826

GenStat release 6.1 reference manual. Part 2. Directives

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

Payne, R. W., Baird, D. B., Cherry, M., Gilmour, A. R., Harding, S. A., Lane, P. W., Morgan, G. W., Murray, D. A., Soutar, D. M., Thompson, R., Todd, A. D., Tunnicliffe Wilson, G., Webster, R. and Welham, S. J. 2002. GenStat release 6.1 reference manual. Part 2. Directives. Hemel Hempstead VSN International.

GenStat release 6.1 reference manual. Part 1. Summary

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

Statistical and geostatistical analysis of the National Soil Inventory of England and Wales. Technical Report to the Department of Food and Rural Affairs

D1 - Technical reports: non-confidential

Oliver, M. A., Loveland, P. J., Frogbrook, Z. L., Webster, R. and McGrath, S. P. 2002. Statistical and geostatistical analysis of the National Soil Inventory of England and Wales. Technical Report to the Department of Food and Rural Affairs. Available on CD-ROM from the National Soil Resources Institute, Cranfield University, Silsoe, Bedford MK45 4DT.

Reply to comment on "Modelling soil variation: past, present and future", by Phillipe Baveye

A - Papers appearing in refereed journals

Heuvelink, G. B. M. and Webster, R. 2002. Reply to comment on "Modelling soil variation: past, present and future", by Phillipe Baveye. Geoderma. 109, pp. 295-297.

Analysing repeated measurements in soil monitoring and experimentation

A - Papers appearing in refereed journals

Webster, R. and Payne, R. W. 2002. Analysing repeated measurements in soil monitoring and experimentation. European Journal of Soil Science. 53 (1), pp. 1-13. https://doi.org/10.1046/j.1365-2389.2002.00408.x

Disjunctive kriging for agricultural management

C1 - Edited contributions to conferences/learned societies

Oliver, M. A. and Webster, R. 2001. Disjunctive kriging for agricultural management. Proceedings 3rd European Conference on Precision Agriculture, Montpellier, 18-20 June 2001. Vol. 1 . Agro Montpellier, Montpellier. pp. 67-72

Factorial kriging of a soil inventory

C1 - Edited contributions to conferences/learned societies

Webster, R., Oliver, M. A., Loveland, P. J., Frogbrook, Z. and McGrath, S. P. 2001. Factorial kriging of a soil inventory. Kleingeld, W. J. and Krige, D. G. (ed.) Geostatistics 2000, Cape Town. Vol. 2 . Geostatistical Association of South Africa, Cape Town. pp. 623-632

Changes in variance and correlation of soil properties with scale and location: analysis using an adapted maximal overlap discrete wavelet transform

A - Papers appearing in refereed journals

Lark, R. M. and Webster, R. 2001. Changes in variance and correlation of soil properties with scale and location: analysis using an adapted maximal overlap discrete wavelet transform. European Journal of Soil Science. 52 (4), pp. 547-562. https://doi.org/10.1046/j.1365-2389.2001.00420.x

Spatial analysis of patchy vegetation on semi-arid steppe

C1 - Edited contributions to conferences/learned societies

Webster, R. and Maestre, F. T. 2001. Spatial analysis of patchy vegetation on semi-arid steppe. Froidevaux, R., Monestiez, P. and Allard, J. F. (ed.) geoENV III: Geostatistics for Environmental Applications. Proceedings 3rd European Conference on Geostatistics for Environmental Sciences, Avignon, November 2000 . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 535-537

Statistics to support soil research and their interpretation

A - Papers appearing in refereed journals

Webster, R. 2001. Statistics to support soil research and their interpretation. European Journal of Soil Science. 52 (2), pp. 331-340. https://doi.org/10.1046/j.1365-2389.2001.00383.x

Modelling soil variation: past, present and future

A - Papers appearing in refereed journals

Heuvelink, G. B. M. and Webster, R. 2001. Modelling soil variation: past, present and future. Geoderma. 100 (3-4), pp. 269-301. https://doi.org/10.1016/S0016-7061(01)00025-8

Impact of a century of wastewater irrigation on the abundance of arbuscular mycorrhizal spores in the soil of the Mezquital Valley of Mexico

A - Papers appearing in refereed journals

Ortega-Larrocea, M. P., Siebe, C., Becard, G., Mendez, I. and Webster, R. 2001. Impact of a century of wastewater irrigation on the abundance of arbuscular mycorrhizal spores in the soil of the Mezquital Valley of Mexico. Applied Soil Ecology. 16 (2), pp. 149-157. https://doi.org/10.1016/S0929-1393(00)00105-0

Geostatistics for environmental scientists

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

Webster, R. and Oliver, M. A. 2001. Geostatistics for environmental scientists. John Wiley & Sons Chichester, West Sussex.

Is precision management of nematicide inputs an option for the control of potato cyst nematodes?

C1 - Edited contributions to conferences/learned societies

Evans, K., Webster, R., Barker, A. D. P., Halford, P. D., Russell, M. D. and Stafford, J. V. 2000. Is precision management of nematicide inputs an option for the control of potato cyst nematodes? Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2000 . pp. 621-628

Is soil variation random?

A - Papers appearing in refereed journals

Webster, R. 2000. Is soil variation random? Geoderma. 97, pp. 149-163.

Filtering SPOT imagery by kriging analysis

A - Papers appearing in refereed journals

Oliver, M. A., Webster, R. and Slocum, K. 2000. Filtering SPOT imagery by kriging analysis. International Journal Of Remote Sensing. 21, pp. 735-752.

Soil as an indicator of sustainability

B - Book chapters etc edited externally

Webster, R. 1999. Soil as an indicator of sustainability. in: Siebe, C., Oleschko, K., Etchevers, J., Toledo, G. and Rodarte, H. C. (ed.) Conservacion y restauracion de suelos pp. 27-45

Sampling, estimating and understanding soil pollution

C1 - Edited contributions to conferences/learned societies

Webster, R. 1999. Sampling, estimating and understanding soil pollution. geoENV II: Proceedings 2nd European Conference on Geostatistics for Environmental Applications, Valencia, 18-20 November 1998 . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 25-37

Sampling to monitor soil in England and Wales

C1 - Edited contributions to conferences/learned societies

Scholz, M., Oliver, M. A., Webster, R., Loveland, P. J. and McGrath, S. P. 1999. Sampling to monitor soil in England and Wales. Gomez-Hernandez, J., Froidevaux, R. and Soares, A. (ed.) geoENV II: Proceedings 2nd European Conference on Geostatistics for Environmental Applications, Valencia, 18-20 November 1998 . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 465-476

Image filtering by kriging analysis

C1 - Edited contributions to conferences/learned societies

Oliver, M. A., Webster, R. and Slocum, K. 1999. Image filtering by kriging analysis. Gomez-Hernandez, J., Froidevaux, R. and Soares, A. (ed.) geoENV II: Proceedings 2nd European Conference on Geostatistics for Environmental Applications, Valencia, 18-20 November 1998 . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 549-560

Mapping infestations of potato cyst nematodes and the potential for patch treatment with nematicides

C1 - Edited contributions to conferences/learned societies

Evans, K., Webster, R., Barker, A. D., Halford, P. D., Russell, M. D., Stafford, J. and Griffin, S. 1999. Mapping infestations of potato cyst nematodes and the potential for patch treatment with nematicides. Stafford, J. V. (ed.) Precision Agriculture '99. Proceedings 2nd European Conference on Precision Agriculture, Odense, 11-15 July 1999 . Sheffield Academic Press, Sheffield. pp. 505-515

Analysis and elucidation of soil variation using wavelets

A - Papers appearing in refereed journals

Lark, R. M. and Webster, R. 1999. Analysis and elucidation of soil variation using wavelets. European Journal of Soil Science. 50 (2), pp. 185-206. https://doi.org/10.1046/j.1365-2389.1999.t01-1-00234.x

Model-based geostatistics - discussion

A - Papers appearing in refereed journals

Webster, R., Lawson, A. B., Glasbey, C., Horgan, G., Elston, D., Host, G., Mugglestone, M. A., Kenward, M. G., Kent, J. T., Stein, A., Clifford, P., Ledford, A. W., Marriott, P. K., Aitkin, M., Atkinson, A. C., Boskov, M., Kelsall, J., Wakefield, J., Bowman, A., Casson, E., Cressie, N., Denison, D. G. T., Mallick, B. K., Dixon, P., Scott, M., Haas, T. C., Handcock, M. S., Holmes, C. C., Laslett, G., Lele, S., Nadarajah, S., O'Hagan, A, Pettitt, A. N., Hay, J., Richardson, S., Stein, M., Stoyan, D. and Williams, C. K. I. 1998. Model-based geostatistics - discussion. Journal of the Royal Statistical Society, Series C (Applied Statistics). 47, pp. 326-350.

Mapping potato cyst nematode populations for modulated applications of nematicide

C1 - Edited contributions to conferences/learned societies

Evans, K., Stafford, J., Webster, R., Halford, P. D., Russell, M. D., Barker, A. D. and Griffin, S. 1998. Mapping potato cyst nematode populations for modulated applications of nematicide. Protection and Production of Sugar Beet and Potatoes. Aspects of Applied Biology 52 . pp. 101-108

Binomial cokriging for estimating and mapping the risk of childhood cancer

A - Papers appearing in refereed journals

Oliver, M. A., Webster, R., Lajaunie, C., Muir, K. R., Parkes, S. E., Cameron, A. H., Stevens, M. C. G. and Mann, J. R. 1998. Binomial cokriging for estimating and mapping the risk of childhood cancer. IMA Journal of Mathematics Applied in Medicine and Biology. 15, pp. 279-297.

Experience with the replication of regional survey of soil pollution

A - Papers appearing in refereed journals

Meuli, R., Schulin, R. and Webster, R. 1998. Experience with the replication of regional survey of soil pollution. Environmental Pollution. 101, pp. 311-320.

Genstat 5 Release 4.1 reference manual supplement

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

Payne, R. W., Lane, P. W., Baird, D. B., Gilmour, A. R., Harding, S. A., Morgan, G. W., Murray, D. A., Thompson, R., Todd, A. D., Tunnicliffe Wilson, G., Webster, R. and Welham, S. J. 1997. Genstat 5 Release 4.1 reference manual supplement. Numerical Algorithms Group, Oxford.

Genstat for Windows command language manual

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

Payne, R. W., Lane, P. W., Baird, D. B., Gilmour, A. R., Harding, S. A., Morgan, G. W., Murray, D. A., Thompson, R., Todd, A. D., Tunnicliffe Wilson, G., Webster, R. and Welham, S. J. 1997. Genstat for Windows command language manual. Numerical Algorithms Group, Oxford.

Genstat 5 Release 4.1 reference summary

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

Soil resources and their assessment

A - Papers appearing in refereed journals

Webster, R. 1997. Soil resources and their assessment. Philosophical Transactions of the Royal Society B-Biological Sciences. 352, pp. 963-973.

Regression and functional relations

A - Papers appearing in refereed journals

Webster, R. 1997. Regression and functional relations. European Journal of Soil Science. 48 (3), pp. 557-566. https://doi.org/10.1111/j.1365-2389.1997.tb00222.x

A rational strategy for determining the number of cores for bulked sampling of soil

C1 - Edited contributions to conferences/learned societies

Oliver, M. A., Frogbrook, Z., Webster, R. and Dawson, C. J. 1997. A rational strategy for determining the number of cores for bulked sampling of soil. Precision Agriculture 1997: Proceedings 1st European Conference on Precision Agriculture, Warwick, September 1997 . BIOS Scientific Publishers Limited. pp. 155-162

Multivariate spatial analysis of a pollen core

C1 - Edited contributions to conferences/learned societies

Oliver, M. A. and Webster, R. 1997. Multivariate spatial analysis of a pollen core. Baafi, E. Y. and Schofield, N. A. (ed.) Geostatistics Wollongong '96: Proceedings 5th International Geostatistics Congress, Wollongong, 1996, Vol. 2 . Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 1209-1220

Multivariate, autocorrelation and spectral analyses of a pollen profile from Scotland and evidence for periodicity

A - Papers appearing in refereed journals

Oliver, M. A., Webster, R., Edwards, K. J. and Whittington, G. 1997. Multivariate, autocorrelation and spectral analyses of a pollen profile from Scotland and evidence for periodicity. Review Of Palaeobotany And Palynology. 96, pp. 121-144.

Assessing the risk of soil contamination in the Swiss Jura using indicator geostatistics

A - Papers appearing in refereed journals

Goovaerts, P., Webster, R. and Dubois, J-P. 1997. Assessing the risk of soil contamination in the Swiss Jura using indicator geostatistics. Environmental And Ecological Statistics. 4, pp. 31-48.

Optimizing plot size and shape for field experiments on terraces

A - Papers appearing in refereed journals

Poultney, R., Riley, J. and Webster, R. 1997. Optimizing plot size and shape for field experiments on terraces. Experimental Agriculture. 33 (1), pp. 51-64. https://doi.org/10.1017/S0014479797000161

An analysis of crown condition of Picea , Fagus and Abies in relation to environment in Switzerland

A - Papers appearing in refereed journals

Webster, R., Rigling, A. and Walthert, L. 1996. An analysis of crown condition of Picea , Fagus and Abies in relation to environment in Switzerland. Forestry. 69, pp. 347-355.

Mapping heavy metals in polluted soil by disjunctive kriging

A - Papers appearing in refereed journals

Von Steiger, B., Webster, R., Schulin, R. and Lehmann, R. 1996. Mapping heavy metals in polluted soil by disjunctive kriging. Environmental Pollution. 94, pp. 205-215.

An overview of spatial analysis in Genstat

C2 - Non-edited contributions to conferences

Payne, R. W., Webster, R. and Mugglestone, M. A. 1996. An overview of spatial analysis in Genstat. Abstracts 4th Australasian Genstat Conference, Adelaide, 4-6 December 1996 . pp. 27

What is kriging?

C1 - Edited contributions to conferences/learned societies

Webster, R. 1996. What is kriging? Modelling in Applied Biology: Spatial Aspects. Aspects of Applied Biology 46 . pp. 57-66

Disjunctive kriging for environmental management

A - Papers appearing in refereed journals

Oliver, M. A., Webster, R. and McGrath, S. P. 1996. Disjunctive kriging for environmental management. Environmetrics. 7 (3), pp. 333-358. https://doi.org/10.1002/(SICI)1099-095X(199605)7:3<333::AID-ENV209>3.0.CO;2-V

Genstat 5 for Windows reference manual supplement

D1 - Technical reports: non-confidential

Payne, R. W., Lane, P. W., Baird, D. B., Gilmour, A. R., Harding, S. A., Morgan, G. W., Murray, D. A., Thompson, R., Todd, A. D., Tunnicliffe Wilson, G., Webster, R. and Welham, S. J. 1995. Genstat 5 for Windows reference manual supplement. Oxford Numerical Algorithms Group.

Genstat for Windows. Release 3.2 manual supplement

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

Payne, R. W., Lane, P. W., Baird, D. B., Harding, S. A., Murray, D. A., Morgan, G. W., Todd, A. D., Thompson, R., Tunnicliffe Wilson, G., Webster, R., Welham, S. J. and White, Robin P. 1995. Genstat for Windows. Release 3.2 manual supplement. Numerical Algorithms Group, Oxford.

Genstat for Windows reference summary

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

Payne, R. W., Lane, P. W., Baird, D. B., Harding, S. A., Murray, D. A., Morgan, G. W., Todd, A. D., Thompson, R., Tunnicliffe Wilson, G., Webster, R., Welham, S. J. and White, Robin P. 1995. Genstat for Windows reference summary. Numerical Algorithms Group, Oxford.

Genstat 5 release 3.2 reference summary

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

Payne, R. W., Lane, P. W., Baird, D. B., Harding, S. A., Murray, D. A., Morgan, G. W., Todd, A. D., Thompson, R., Tunnicliffe Wilson, G., Webster, R., Welham, S. J. and White, Robin P. 1995. Genstat 5 release 3.2 reference summary. Oxford Numerical Algorithms Group.

Genstat 5 release 3.2 manual supplement

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

Payne, R. W., Lane, P. W., Baird, D. B., Harding, S. A., Murray, D. A., Morgan, G. W., Todd, A. D., Thompson, R., Tunnicliffe Wilson, G., Webster, R., Welham, S. J. and White, Robin P. 1995. Genstat 5 release 3.2 manual supplement. Numerical Algorithms Group, Oxford.

Procedure MVARIOGRAM

B - Book chapters etc edited externally

Harding, S. A. and Webster, R. 1995. Procedure MVARIOGRAM. in: Payne, R. W. and Arnold, G. M. (ed.) Genstat 5 Procedure Library Manual Release 3[3] Numerical Algorithms Group, Oxford. pp. 267-269

The development of pedometrics

A - Papers appearing in refereed journals

Webster, R. 1994. The development of pedometrics. Geoderma. 62 (1-3), pp. 1-15. https://doi.org/10.1016/0016-7061(94)90024-8

Cokriging with airborne MSS imagery

A - Papers appearing in refereed journals

Atkinson, P. M., Webster, R. and Curran, P. J. 1994. Cokriging with airborne MSS imagery. Remote Sensing of Environment. 50, pp. 335-345.

Spatial analysis and mapping the annual mean concentrations of acidity and major ions in precipitation over the United Kingdom in 1986

A - Papers appearing in refereed journals

Webster, R., Campbell, G. W. and Irwin, J. G. 1991. Spatial analysis and mapping the annual mean concentrations of acidity and major ions in precipitation over the United Kingdom in 1986. Environmental Monitoring And Assessment. 16 (1), pp. 1-17. https://doi.org/10.1007/BF00399591

A stochastic distributed model of soil erosion by overland flow

A - Papers appearing in refereed journals

Wright, A. C. and Webster, R. 1991. A stochastic distributed model of soil erosion by overland flow. Earth Surface Processes And Landforms. 16 (3), pp. 207-226. https://doi.org/10.1002/esp.3290160303

A comparison of kriging, cubic splines and classification for predicting soil properties from sample information

A - Papers appearing in refereed journals

Voltz, M. and Webster, R. 1990. A comparison of kriging, cubic splines and classification for predicting soil properties from sample information. Journal of Soil Science. 41 (3), pp. 473-490. https://doi.org/10.1111/j.1365-2389.1990.tb00080.x

Statistical methods in soil and land resource survey

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

Webster, R. and Oliver, M. A. 1990. Statistical methods in soil and land resource survey. Oxford Oxford University Press (OUP).

Spatial averaging of solute and water flows in soil

C1 - Edited contributions to conferences/learned societies

Webster, R. and Addiscott, T. M. 1990. Spatial averaging of solute and water flows in soil. Jury, W. A., Parker, J. C., Roth, K. and Fluhler, H. (ed.) Field-scale water and solute flux in soils. Birkhauser Verlag, Basel. pp. 165-173

Kriging: a method of interpolation for geographical information systems.

A - Papers appearing in refereed journals

Oliver, M. A. and Webster, R. 1990. Kriging: a method of interpolation for geographical information systems. International Journal of Geographical Information Systems. 4 (3), pp. 313-332. https://doi.org/10.1080/02693799008941549

The relation between reflected radiation and yield on the Broadbalk winter wheat experiment.

A - Papers appearing in refereed journals

Ashcroft, P. M., Catt, J. A., Curran, P. J., Munden, J. and Webster, R. 1990. The relation between reflected radiation and yield on the Broadbalk winter wheat experiment. International Journal Of Remote Sensing. 11 (10), pp. 1821-1836. https://doi.org/10.1080/01431169008955132

Sampling remotely sensed imagery for storage, retrieval and reconstruction.

A - Papers appearing in refereed journals

Atkinson, P. M., Curran, P. J. and Webster, R. 1990. Sampling remotely sensed imagery for storage, retrieval and reconstruction. Professional Geographer. 42 (3), pp. 345-353.

Estimating the surface density of fissures in clay soil from deterministic parallel sections.

A - Papers appearing in refereed journals

Scott, G. J. T., Webster, R. and Nortcliff, S. 1990. Estimating the surface density of fissures in clay soil from deterministic parallel sections. Journal of Microscopy. 158 (1), pp. 31-41. https://doi.org/10.1111/j.1365-2818.1990.tb02974.x

An editor's farewell.

G - Articles in popular magazines and other technical publications

Webster, R. 1990. An editor's farewell. Soil Use and Management. 6 (1), pp. 3-6. https://doi.org/10.1111/j.1475-2743.1990.tb00788.x

Recent achievements in geostatistical analysis of soil.

A - Papers appearing in refereed journals

Webster, R. 1989. Recent achievements in geostatistical analysis of soil. Agrokemia es talajtan. 38 (3/4), pp. 519-536.

Is regression what you really want?

A - Papers appearing in refereed journals

Webster, R. 1989. Is regression what you really want? Soil Use and Management. 5 (2), pp. 47-53. https://doi.org/10.1111/j.1475-2743.1989.tb00759.x

Variation in soil properties caused by irrigation and cultivation in the central Gezira of Sudan.

A - Papers appearing in refereed journals

Buraymah, I. M. and Webster, R. 1989. Variation in soil properties caused by irrigation and cultivation in the central Gezira of Sudan. Soil & Tillage Research. 13 (1), pp. 57-74. https://doi.org/10.1016/0167-1987(89)90038-X

Spatial correlation in reflected radiation from the ground and its implications for sampling and mapping by ground-based radiometry.

A - Papers appearing in refereed journals

Webster, R., Curran, P. J. and Munden, J. W. 1989. Spatial correlation in reflected radiation from the ground and its implications for sampling and mapping by ground-based radiometry. Remote Sensing of Environment. 29 (1), pp. 67-78. https://doi.org/10.1016/0034-4257(89)90079-5

Optimal multi-variable sampling schemes for remote sensing investigations.

C1 - Edited contributions to conferences/learned societies

Atkinson, P. M., Webster, R. and Curran, P. J. 1989. Optimal multi-variable sampling schemes for remote sensing investigations. Proceedings of the NERC Workshop on Airborne Remote Sensing, Windemere, 1989, . Natural Environment Research Council (NERC). pp. 45-57

Spatial distribution on pasture of infective larvae of the gastro-intestinal nematode parasites of sheep.

A - Papers appearing in refereed journals

Boag, B., Topham, P. B. and Webster, R. 1989. Spatial distribution on pasture of infective larvae of the gastro-intestinal nematode parasites of sheep. International Journal for Parasitology. 19 (6), pp. 681-685. https://doi.org/10.1016/0020-7519(89)90047-7

On the Akaike Information Criterion for choosing models for variograms of soil properties.

A - Papers appearing in refereed journals

Webster, R. and McBratney, A. B. 1989. On the Akaike Information Criterion for choosing models for variograms of soil properties. Journal of Soil Science. 40 (3), pp. 493-496. https://doi.org/10.1111/j.1365-2389.1989.tb01291.x

Geostatistics in physical geography. Part II. Applications.

A - Papers appearing in refereed journals

Oliver, M. A., Webster, R. and Gerrard, J. 1989. Geostatistics in physical geography. Part II. Applications. Transactions Institute of British Geographers. 14 (3), pp. 270-286. https://doi.org/10.2307/622688

Geostatistics in physical geography. Part I. Theory.

A - Papers appearing in refereed journals

Oliver, M. A., Webster, R. and Gerrard, J. 1989. Geostatistics in physical geography. Part I. Theory. Transactions Institute of British Geographers. 14 (3), pp. 259-269. https://doi.org/10.2307/622687

Optimal interpolation and isarithmic mapping of soil properties 6 Disjunctive kriging and mapping the conditional probability VI

A - Papers appearing in refereed journals

Webster, R. and Oliver, M. A. 1989. Optimal interpolation and isarithmic mapping of soil properties 6 Disjunctive kriging and mapping the conditional probability VI. Journal of Soil Science. 40 (3), pp. 497-512. https://doi.org/10.1111/j.1365-2389.1989.tb01292.x

A two-stage sampling procedure for determining variograms of soil properties.

C2 - Non-edited contributions to conferences

Oliver, M. A. and Webster, R. 1989. A two-stage sampling procedure for determining variograms of soil properties. Statistics Earth and Space Sciences, Leuven, 1989. Abstracts . Katholieke Universiteit, Leuven. pp. 94-95

Geostatically constrained multivariate classification.

B - Book chapters etc edited externally

Oliver, M. A. and Webster, R. 1989. Geostatically constrained multivariate classification. in: Armstrong, M. (ed.) Geostatistics. Vol. 1 Kluwer Academic Publishers, Dordrecht, Netherlands.

Disjunctive kriging in agriculture

B - Book chapters etc edited externally

Webster, R. and Oliver, M. A. 1989. Disjunctive kriging in agriculture. in: Armstrong, M. (ed.) Geostatistics. Vol. 1 Kluwer Academic Publishers, Dordrecht, Netherlands.

A geostatistical basis for spatial weighting in multivariate classification

A - Papers appearing in refereed journals

Oliver, M. A. and Webster, R. 1989. A geostatistical basis for spatial weighting in multivariate classification. Mathematical geology. 21 (1), pp. 15-35. https://doi.org/10.1007/BF00897238

Optimal sampling and estimation for image storage and retrieval.

C1 - Edited contributions to conferences/learned societies

Atkinson, P. M., Curran, P. J. and Webster, R. 1988. Optimal sampling and estimation for image storage and retrieval. Proceedings of the NERC 1987 Airborne Campaign Workshop, Southampton, 1988. Swindon : NERC. pp. 205-216

Relation between yield and reflected radiation on the Broadbalk winter wheat experiment at Rothamsted.

C1 - Edited contributions to conferences/learned societies

Ashcroft, P. M., Catt, J. A., Curran, P. J., Munden, J. and Webster, R. 1988. Relation between yield and reflected radiation on the Broadbalk winter wheat experiment at Rothamsted. Proceedings of the NERC 1987 Airborne Campaign Workshop, Southampton, 1988. Swindon : NERC. pp. 163-174

The topology of pore structure in cracking clay soil. II. Connectivity tissue and its estimation.

A - Papers appearing in refereed journals

Scott, G. J. T., Webster, R. and Nortcliff, S. 1988. The topology of pore structure in cracking clay soil. II. Connectivity tissue and its estimation. Journal of Soil Science. 39 (3), pp. 315-326. https://doi.org/10.1111/j.1365-2389.1988.tb01218.x

The topology of pore structure in cracking clay soil. I. The estimation of numerical density.

A - Papers appearing in refereed journals

Scott, G. J. T., Webster, R. and Nortcliff, S. 1988. The topology of pore structure in cracking clay soil. I. The estimation of numerical density. Journal of Soil Science. 39 (3), pp. 303-314. https://doi.org/10.1111/j.1365-2389.1988.tb01217.x

A geostatistical method for segmenting multivariate sequences of soil data.

B - Book chapters etc edited externally

Wackernagel, H., Webster, R. and Oliver, M. A. 1988. A geostatistical method for segmenting multivariate sequences of soil data. in: Classification and related methods of data analysis . Ed. H.H. Bock. Amsterdam : Elsevier/North Holland pp. 641-650

The elucidation of soil pattern in the Wyre Forest of the West Midlands, England. I. Multivariate distribution.

A - Papers appearing in refereed journals

Oliver, M. A. and Webster, R. 1987. The elucidation of soil pattern in the Wyre Forest of the West Midlands, England. I. Multivariate distribution. Journal of Soil Science. 38 (2), pp. 279-291. https://doi.org/10.1111/j.1365-2389.1987.tb02145.x

The elucidation of soil pattern in the Wyre Forest of the West Midlands, England. II. Spatial distribution.

A - Papers appearing in refereed journals

Oliver, M. A. and Webster, R. 1987. The elucidation of soil pattern in the Wyre Forest of the West Midlands, England. II. Spatial distribution. Journal of Soil Science. 38 (2), pp. 293-307. https://doi.org/10.1111/j.1365-2389.1987.tb02146.x

A survey of the sulphur content of wheat grown in Britain

A - Papers appearing in refereed journals

Byers, M., McGrath, S. P. and Webster, R. 1987. A survey of the sulphur content of wheat grown in Britain. Journal of the Science of Food and Agriculture. 38 (2), pp. 151-160. https://doi.org/10.1002/jsfa.2740380207

Mapping soil fertility at Broom's Barn by simple kriging.

A - Papers appearing in refereed journals

Webster, R. and McBratney, A. B. 1987. Mapping soil fertility at Broom's Barn by simple kriging. Journal of the Science of Food and Agriculture. 38 (2), pp. 97-115. https://doi.org/10.1002/jsfa.2740380203

Statistical methods for analysing soil variation.

G - Articles in popular magazines and other technical publications

Webster, R. 1986. Statistical methods for analysing soil variation.

Semi-variograms for modelling the spatial pattern of landform and soil properties.

A - Papers appearing in refereed journals

Oliver, M. A. and Webster, R. 1986. Semi-variograms for modelling the spatial pattern of landform and soil properties. Earth Surface Processes And Landforms. 11 (5), pp. 491-504. https://doi.org/10.1002/esp.3290110504

Microaggregates in red earths and related soils in East and Central Africa, their classification and occurrence.

A - Papers appearing in refereed journals

Trapnell, C. G. and Webster, R. 1986. Microaggregates in red earths and related soils in East and Central Africa, their classification and occurrence. Journal of Soil Science. 37, pp. 109-123.

Combining nested and linear sampling for determining the scale and form of spatial variation of regionalized variables.

A - Papers appearing in refereed journals

Oliver, M. A. and Webster, R. 1986. Combining nested and linear sampling for determining the scale and form of spatial variation of regionalized variables. Geographical Analysis . 18 (3), pp. 227-242. https://doi.org/10.1111/j.1538-4632.1986.tb00095.x

A computer program for evaluating risks in constructing choropleth maps by point sampling along transects.

A - Papers appearing in refereed journals

Burgess, T. M. and Webster, R. 1986. A computer program for evaluating risks in constructing choropleth maps by point sampling along transects. Computers & Geosciences. 12, pp. 107-127.

A re-examination of the evidence for a Plio-Pleistocene marine transgression on the Chiltern Hills. I. Structures and surfaces.

A - Papers appearing in refereed journals

Moffat, A. J., Catt, J. A., Webster, R. and Brown, E. H. 1986. A re-examination of the evidence for a Plio-Pleistocene marine transgression on the Chiltern Hills. I. Structures and surfaces. Earth Surface Processes And Landforms. 11 (1), pp. 95-106. https://doi.org/10.1002/esp.3290110110

Estimating and mapping grass cover and biomass from low-level photographic sampling.

A - Papers appearing in refereed journals

Dancy, K. J., Webster, R. and Abel, N. O. J. 1986. Estimating and mapping grass cover and biomass from low-level photographic sampling. International Journal Of Remote Sensing. 7 (12), pp. 1679-1704. https://doi.org/10.1080/01431168608948961

An analysis of crack pattern in clay soil : its density and orientation.

A - Papers appearing in refereed journals

Scott, G. J. T., Webster, R. and Nortcliff, S. 1986. An analysis of crack pattern in clay soil : its density and orientation. Journal of Soil Science. 37 (4), pp. 653-668. https://doi.org/10.1111/j.1365-2389.1986.tb00394.x

Choosing functions for semi-variograms of soil properties and fitting them to sampling estimates.

A - Papers appearing in refereed journals

McBratney, A. B. and Webster, R. 1986. Choosing functions for semi-variograms of soil properties and fitting them to sampling estimates. Journal of Soil Science. 37 (4), pp. 617-639. https://doi.org/10.1111/j.1365-2389.1986.tb00392.x

Utilisation exploratoire de la geostatistique pour la cartographie du sol dans la foret de Wyre (GB)

A - Papers appearing in refereed journals

Webster, R. and Oliver, M. A. 1985. Utilisation exploratoire de la geostatistique pour la cartographie du sol dans la foret de Wyre (GB). Sciences de la terre Serie Informatique geologique. 24, pp. 171-173.

Quantitative spatial analysis of soil in the field

B - Book chapters etc edited externally

Webster, R. 1985. Quantitative spatial analysis of soil in the field. in: Stewart, B. A. (ed.) Advances in Soil Science, Vol.3 New York, Springer.

Une approche probabiliste de la cartographie du sol

A - Papers appearing in refereed journals

Webster, R. and Burgess, T. M. 1984. Une approche probabiliste de la cartographie du sol. Sciences de la terre Serie Informatique geologique. 18, pp. 175-185.

Elucidation and characterization of spatial variation in soil using regionalized variable theory : Proceedings of the 2nd NATO ASI, Geostatistics for Natural Resource Characterization, NATO ASI Series. Series C: Mathematical Physical

A - Papers appearing in refereed journals

Webster, R. 1984. Elucidation and characterization of spatial variation in soil using regionalized variable theory : Proceedings of the 2nd NATO ASI, Geostatistics for Natural Resource Characterization, NATO ASI Series. Series C: Mathematical Physical. Classification Society Bulletin.

Sampling and bulking strategies for estimating soil properties in small regions

A - Papers appearing in refereed journals

Webster, R. and Burgess, T. M. 1984. Sampling and bulking strategies for estimating soil properties in small regions. Journal of Soil Science. 35 (1), pp. 127-140. https://doi.org/10.1111/j.1365-2389.1984.tb00267.x

A geostatistical study of topsoil properties in zhangwu county, china

A - Papers appearing in refereed journals

Xu, J. Y. and Webster, R. 1984. A geostatistical study of topsoil properties in zhangwu county, china. Catena. 11 (1), pp. 13-26. https://doi.org/10.1016/s0341-8162(84)80002-8

A general text translation program for coded descriptions

A - Papers appearing in refereed journals

Lessells, C. M. and Webster, R. 1984. A general text translation program for coded descriptions. Computers & Geosciences. 10 (2-3), pp. 211-236. https://doi.org/10.1016/0098-3004(84)90022-0

Improved estimation of micro nutrients in hectare plots of the Sonning series

A - Papers appearing in refereed journals

Webster, R. and Nortcliff, S. 1984. Improved estimation of micro nutrients in hectare plots of the Sonning series. Journal of Soil Science. 35 (4), pp. 667-672.

Optimal sampling strategies for mapping soil types. II. Risk functions and sampling intervals

A - Papers appearing in refereed journals

Burgess, T. M. and Webster, R. 1984. Optimal sampling strategies for mapping soil types. II. Risk functions and sampling intervals. Journal of Soil Science. 35, pp. 655-665.

Optimal sampling strategies for mapping soil types. I. Distribution of boundary spacings

A - Papers appearing in refereed journals

Burgess, T. M. and Webster, R. 1984. Optimal sampling strategies for mapping soil types. I. Distribution of boundary spacings. Journal of Soil Science. 35, pp. 641-654.

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. https://doi.org/10.1002/jsfa.2740340310

Spatial variation in soil and the role of kriging

A - Papers appearing in refereed journals

Webster, R. and Burgess, T. M. 1983. Spatial variation in soil and the role of kriging. Agricultural Water Management. 6 (2-3), pp. 111-122. https://doi.org/10.1016/0378-3774(83)90003-3

How many observations are needed for regional estimation of soil properties

A - Papers appearing in refereed journals

McBratney, A. B. and Webster, R. 1983. How many observations are needed for regional estimation of soil properties. Soil Science. 135 (3), pp. 177-183. https://doi.org/10.1097/00010694-198303000-00007

Optimal interpolation and isarithmic mapping of soil properties .5. Co-regionalization and multiple sampling strategy

A - Papers appearing in refereed journals

McBratney, A. B. and Webster, R. 1983. Optimal interpolation and isarithmic mapping of soil properties .5. Co-regionalization and multiple sampling strategy. Journal of Soil Science. 34 (1), pp. 137-162. https://doi.org/10.1111/j.1365-2389.1983.tb00820.x

Regional variation of extractable copper and cobalt in the topsoil of south-east Scotland

A - Papers appearing in refereed journals

McBratney, A. B., Webster, R., Mclaren, R. G. and Spiers, R. B 1982. Regional variation of extractable copper and cobalt in the topsoil of south-east Scotland. Agronomie. 2 (10), pp. 969-982.

Experience of kriging from field measurements of soil properties : 3rd Colloque AISA Traitment informatique des Donnes de sol 14-17th Sept 1981

A - Papers appearing in refereed journals

Webster, R. 1981. Experience of kriging from field measurements of soil properties : 3rd Colloque AISA Traitment informatique des Donnes de sol 14-17th Sept 1981. Sols.

Spatial dependence and classification of the soil along a transect in northeast Scotland

A - Papers appearing in refereed journals

McBratney, A. B. and Webster, R. 1981. Spatial dependence and classification of the soil along a transect in northeast Scotland. Geoderma. 26 (1-2), pp. 63-82. https://doi.org/10.1016/0016-7061(81)90076-8

Soil segment overlap in character space and its implications for soil classification

A - Papers appearing in refereed journals

Webster, R. and McBratney, A. B. 1981. Soil segment overlap in character space and its implications for soil classification. Journal of Soil Science. 32 (1), pp. 133-147. https://doi.org/10.1111/j.1365-2389.1981.tb01692.x

Detection of ridge and furrow pattern by spectral-analysis of crop yield

A - Papers appearing in refereed journals

McBratney, A. B. and Webster, R. 1981. Detection of ridge and furrow pattern by spectral-analysis of crop yield. International Statistical Review. 49 (1), pp. 45-52. https://doi.org/10.2307/1403036

The design of optimal sampling schemes for local estimation and mapping of regionalized variables .2. Program and examples

A - Papers appearing in refereed journals

McBratney, A. B. and Webster, R. 1981. The design of optimal sampling schemes for local estimation and mapping of regionalized variables .2. Program and examples. Computers & Geosciences. 7 (4), pp. 335-365. https://doi.org/10.1016/0098-3004(81)90078-9

The design of optimal sampling schemes for local estimation and mapping of regionalized variables .1. Theory and method

A - Papers appearing in refereed journals

McBratney, A. B., Webster, R. and Burgess, T. M. 1981. The design of optimal sampling schemes for local estimation and mapping of regionalized variables .1. Theory and method. Computers & Geosciences. 7 (4), pp. 331-334. https://doi.org/10.1016/0098-3004(81)90077-7

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