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Andrew Whitmore   Professor  Senior Scientist or Principal Investigator 
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Andrew Whitmore published an article in April 2017.
Top co-authors See all
P. Smith

148 shared publications

Lunar and Planetary Laboratory, University of Arizona, Tucson, USA

S. Frolking

140 shared publications

Institute for the Study of Earth, Oceans, and Space and Dept. of Earth Sciences, University of New Hampshire, Durham, USA

W. R. Whalley

136 shared publications

Department of Sustainable Agricultural Sciences; Rothamsted Research; Harpenden AL5 2JQ UK

Lars Stoumann Jensen

80 shared publications

Plant and Soil Science Section, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Frederiksberg C, Denmark

Alexander Komarov

61 shared publications

Institute of Physicochemical and Biological Problems in Soil Science, Russian Academy of Sciences, 142290 Institutskaya ul., 2, Pushchino, Moscow Region, Russian Federation

14
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239
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Publication Record
Distribution of Articles published per year 
(1991 - 2017)
Total number of journals
published in
 
11
 
Publications See all
Article 0 Reads 0 Citations Assessing sampling designs for determining fertilizer practice from yield data S.E. Muhammed, B.P. Marchant, A.P. Whitmore, G. Dailey, A.E.... Published: 01 April 2017
Computers and Electronics in Agriculture, doi: 10.1016/j.compag.2017.02.002
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Article 0 Reads 1 Citation 150 years of macronutrient change in unfertilized UK ecosystems: Observations vs simulations A.P. Whitmore, E. Tipping, Jessica Davies Published: 01 December 2016
Science of The Total Environment, doi: 10.1016/j.scitotenv.2016.03.055
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Highlights•Tested models are needed to understand plant-soil C N and P change & untangle drivers.•Two long-term experiments are used to test the N14CP model and to uncouple drivers.•N deposition is shown to have a large effect on the Geescroft Wilderness experiment.•Biomass removal has reduced the effect of N deposition at the Park Grass experiment.•These conclusions can be interpreted more widely in northern grasslands and forests. AbstractUnderstanding changes in plant-soil C, N and P using data alone is difficult due to the linkages between carbon, nitrogen and phosphorus cycles (C, N and P), and multiple changing long-term drivers (e.g. climate, land-use, and atmospheric N deposition). Hence, dynamic models are a vital tool for disentangling these drivers, helping us understand the dominant processes and drivers and predict future change. However, it is essential that models are tested against data if their outputs are to be concluded upon with confidence. Here, a simulation of C, N and P cycles using the N14CP model was compared with time-series observations of C, N and P in soils and biomass from the Rothamsted Research long-term experiments spanning 150 years, providing an unprecedented temporal integrated test of such a model. N14CP reproduced broad trends in soil organic matter (SOM) C, N and P, vegetation biomass and N and P leaching. Subsequently, the model was used to decouple the effects of land management and elevated nitrogen deposition in these experiments. Elevated N deposition over the last 150 years is shown to have increased net primary productivity (NPP) 4.5-fold and total carbon sequestration 5-fold at the Geescroft Wilderness experiment, which was re-wilded to woodland in 1886. In contrast, the model predicts that for cropped grassland conditions at the Park Grass site, elevated N deposition has very little effect on SOM, as increases in NPP are diverted from the soil. More broadly, these results suggest that N deposition is likely to have had a large effect on SOM and NPP in northern temperate and boreal semi-natural grasslands and forests. However, in cropped and grazed systems in the same region, whilst NPP may have been supported in part by elevated N deposition, declines in SOM may not have been appreciably counteracted by increased N availability. Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
Article 0 Reads 9 Citations On the origin of carbon dioxide released from rewetted soils F.C. Fraser, R. Corstanje, L.K. Deeks, J.A. Harris, M. Pawle... Published: 01 October 2016
Soil Biology and Biochemistry, doi: 10.1016/j.soilbio.2016.06.032
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Highlights•Soils rewetted after drying exhibit an extremely rapid flux of CO2, peak efflux occurs in less than 6 min.•Such CO2 fluxes were prevented by autoclaving, suggesting an intrinsically biochemical or organismal origin to the source.•Strong evidence for an extracellular oxidative pathway contributing to such CO2 fluxes was found. AbstractWhen dry soils are rewetted a pulse of CO2 is invariably released, and whilst this phenomenon has been studied for decades, the precise origins of this CO2 remain obscure. We postulate that it could be of chemical (i.e. via abiotic pathways), biochemical (via free enzymes) or biological (via intact cells) origin. To elucidate the relative contributions of the pathways, dry soils were either sterilised (double autoclaving) or treated with solutions of inhibitors (15% trichloroacetic acid or 1% silver nitrate) targeting the different modes. The rapidity of CO2 release from the soils after the drying:rewetting (DRW) cycle was remarkable, with maximal rates of evolution within 6 min, and 41% of the total efflux over 96 h released within the first 24 h. The complete cessation of CO2 eflux following sterilisation showed there was no abiotic (dissolution of carbonates) contribution to the CO2 release on rewetting, and clear evidence for an organismal or biochemical basis to the flush. Rehydration in the presence of inhibitors indicated that there were approximately equal contributions from biochemical (outside membranes) and organismal (inside membranes) sources within the first 24 h after rewetting. This suggests that some of the flux was derived from microbial respiration, whilst the remainder was a consequence of enzyme activity, possibly through remnant respiratory pathways in the debris of dead cells.
Article 2 Reads 9 Citations Do organic inputs matter – a meta-analysis of additional yield effects for arable crops in Europe R. Hijbeek, M.K. Van Ittersum, H.F.M. Ten Berge, G. Gort, H.... Published: 25 August 2016
Plant and Soil, doi: 10.1007/s11104-016-3031-x
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Article 0 Reads 6 Citations The North Wyke Farm Platform: effect of temperate grassland farming systems on soil moisture contents, runoff and associ... Robert Orr, P. J. Murray, C. J. Eyles, M. S. A. Blackwell, L... Published: 29 June 2016
European Journal of Soil Science, doi: 10.1111/ejss.12350
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The North Wyke Farm Platform was established as a United Kingdom national capability for collaborative research, training and knowledge exchange in agro-environmental sciences. Its remit is to research agricultural productivity and ecosystem responses to different management practices for beef and sheep production in lowland grasslands. A system based on permanent pasture was implemented on three 21-ha farmlets to obtain baseline data on hydrology, nutrient cycling and productivity for 2 years. Since then two farmlets have been modified by either (i) planned reseeding with grasses that have been bred for enhanced sugar content or deep-rooting traits or (ii) sowing grass and legume mixtures to reduce nitrogen fertilizer inputs. The quantities of nutrients that enter, cycle within and leave the farmlets were evaluated with data recorded from sensor technologies coupled with more traditional field study methods. We demonstrate the potential of the farm platform approach with a case study in which we investigate the effects of the weather, field topography and farm management activity on surface runoff and associated pollutant or nutrient loss from soil. We have the opportunity to do a full nutrient cycling analysis, taking account of nutrient transformations in soil, and flows to water and losses to air. The NWFP monitoring system is unique in both scale and scope for a managed land-based capability that brings together several technologies that allow the effect of temperate grassland farming systems on soil moisture levels, runoff and associated water quality dynamics to be studied in detail.HighlightsCan meat production systems be developed that are productive yet minimize losses to the environment?The data are from an intensively instrumented capability, which is globally unique and topical.We use sensing technologies and surveys to show the effect of pasture renewal on nutrient losses.Platforms provide evidence of the effect of meteorology, topography and farm activity on nutrient loss.
BOOK-CHAPTER 0 Reads 1 Citation The Unique Contribution of Rothamsted to Ecological Research at Large Temporal Scales J. Storkey, Andrew Macdonald, J.R. Bell, I.M. Clark, A.S. Gr... Published: 01 January 2016
Advances in Ecological Research, doi: 10.1016/bs.aecr.2016.08.002
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