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Appendix 4: Knowledge Exchange supported by WQ0126
Published Papers
T. Darch, M.S.A. Blackwell, J.M.B. Hawkins, P.M. Haygarth, D. Chadwick. A meta-analysis of organic
and inorganic phosphorus in organic fertilizers, soils and water; implications for water quality. Critical
Reviews in Environmental Science and Technology (in press).
Forthcoming Papers
Darch T., A. Carswell, M. S. A. Blackwell, J. M. B. Hawkins, P. M. Haygarth and D. Chadwick.
(Submitted to JEQ). Dissolved phosphorus retention in buffer strips; influence of slope and soil type.
Darch, T., J.M.B. Hawkins , M.S.A. Blackwell, P.M. Haygarth, D. Chadwick. (In prep). Importance of
slurry application and soil hydrological pathways on organic and inorganic phosphorus mobilisation
from grasslands.
Darch, T., M. S. A. Blackwell, D. Chadwick, P. M. Haygarth, J. M. B. Hawkins, B. L. Turner. (In prep).
Effect of phosphatase concentration on the hydrolysis of organic phosphorus compounds.
Darch, T., M. S. A. Blackwell, D. Chadwick, P. M. Haygarth, J. M. B. Hawkins, B. L. Turner. (In prep).
Determination of plant-solubilisable organic phosphorus in tropical forest soils by extraction with
organic acids.
A, Carswell, D.Jones, P.Hill, D.Chadwick, M. Blackwell, P. Johnes and S. Robinson (In prep.) The
impact of microbial activity on the vertical transport of organic and mineral N compounds in soil
columns. Soil Biology and Biochemistry.
A, Carswell, T. Darch, J. Hawkins, D.Chadwick, M. Blackwell, P. Johnes and S. Robinson (In prep.)
Lateral transport of urea: Impact of slope and soil water release on N transformations. Geoderma
Hawkins, J.M.B., Blackwell, M.S.A., and Granger, S, J. (In prep). Effect of hydrological bypassing of
buffer strips.
Hawkins, J.M.B., Grimsey, V., and Blackwell, M. S.A. (In prep). Simultaneous removal of nitrate and
phosphorus from agricultural drainage waters by combined organic and inorganic reactive materials.
Theses
Tegan Darch (2013) PhD Thesis: Organic and inorganic phosphorus dynamics in the soil-water-plant
continuum. Lancaster Environment Centre, Lancaster University.
Verity Grimsey (2011) MSc Thesis: Evaluation of different permeable reactive barrier (PRB) materials
for the control of diffuse pollutants from agriculture, Lancaster University.
Nanding (2011) MSc Thesis: An Investigation of Slope Effects on Hydrological Pathways through
different types of soils. Bristol University.
Chunbei Li (2011) MSc Thesis: Phosphorus distribution in North Wyke Experimental Buffer Zones
Alison Carswell (2015) PhD Thesis (not submitted). Dissolved organic nitrogen transformation and
transportation processes in grassland soils.
Conferences and Meetings
J.M.B. Hawkins, M.S.A. Blackwell, S.J. Granger, T. Darch, D.R. Chadwick and P.M. Haygarth.
Modular approaches to the control of diffuse agricultural pollution: buffer zones, subsurface
permeable reactive barriers, ditches and ponds. WQ0126 Workshop on Diffuse Agricultural Pollution
Mitigation Methods: Multi-pollutant treatment of agricultural runoff by buffer zones, bioreactors, ditches
and ponds, Rothamsted Research, North Wyke, September 2011.
T. Darch, A. Carswell, M.S.A. Blackwell, J.M.B. Hawkins, S. J. Granger, P.M. Haygarth, P.J. Johnes,
R. Whalley and D.R. Chadwick. Retention of nitrogen and phosphorus forms in buffer strip soils:
Impact of slope and hydrological pathways. WQ0126 Workshop on Diffuse Agricultural Pollution
Mitigation Methods: Multi-pollutant treatment of agricultural runoff by buffer zones, bioreactors,
ditches and ponds, Rothamsted Research, North Wyke, September 2011.
Alison Carswell, Martin Blackwell, Roland Bol, David Chadwick, Jane Hawkins, Penny Johnes,
Richard Whalley (2012) Nitrogen losses from buffer zones: interactions with soil structure and
hydrological pathways. PhD Symposium, Rothamsted Research.
Tegan Darch, Phil Haygarth, Dave Chadwick, Martin Blackwell and Jane Hawkins. Phosphorus
Dynamics in Buffer Strip Soils. IPW6 conference, Seville, Spain, 2010.
Tegan Darch, Martin S.A. Blackwell, Philip M. Haygarth, Jane M. B. Hawkins and Dave Chadwick.
Factors controlling organic and inorganic phosphorus speciation, and their retention and release
kinetics in soils from agricultural buffer strips. Poster presentation at PhD Symposium 4-5 Mar 2010,
Rothamsted Research.
Darch, T., Blackwell, M. S. A., Haygarth, P. M., Hawkins, J. M. and Chadwick, D. Factors controlling
organic and inorganic phosphorus speciation, and their retention and release kinetics in soils from
agricultural buffer strips. Poster presentation at the Rothamsted PhD symposium, 4th-5th March,
2010.
Darch, T., Blackwell, M. S. A., Haygarth, P. M., Hawkins, J. M. and Chadwick, D. Factors controlling
organic and inorganic phosphorus speciation, and their retention and release kinetics in soils from
agricultural buffer strips. COST Action 869 workshop in Ballater, Scotland, 25th-28th April, 2010.
Jane Hawkins, Martin Blackwell, Steve Granger, Tegan Darch, David Chadwick, Roland Bol, Chris
Hodgson, Phil Haygarth. WQ0126: The control of diffuse agricultural pollution using buffer zones,
bioreactors, ditches and ponds. Brooms Barn, Suffolk, 2010.
Tegan Darch. The Importance of Buffer Strips on Organic Phosphorus Loss From Agricultural
Grassland. Internal Phosphorus Workshop, Rothamsted Research, Harpenden, 2010.
Hawkins, J.M.B., Blackwell, M.S.A., Granger S., Chadwick, D., Haygarth, P. and Bol, R. Modular
approaches to the control of diffuse agricultural pollution: buffer zones, bioreactors, ditches and
ponds. European Geosciences Union, Vienna, Austria, 20-24 Apr 2009.
Blackwell, M.S.A. Workshop: Estimating the quantitative environmental impacts of potential set-aside
mitigation options: expert elicitation workshop on water quality. Organised CSL, Nobel House, 11 th
March 2009.
Hawkins, J.M.B., Blackwell, M.S.A., Granger S., Chadwick, D., Haygarth, P. INRA, UMR Sol Agro et
Hydrosystème Spatialisation, Rennes, France, 6 May 2008.
Hawkins, J.M.B., Blackwell, M.S.A., Granger S., Chadwick, D., Haygarth, P. MOPS 2 inaugural
meeting at Defra, Nobel House, 20 Nov 2008.
Hawkins, J.M.B., Blackwell, M.S.A. The ‘Buffers’ project. Internal seminar, North Wyke Research, 26
Feb 2008.
Hawkins, J.M.B., Blackwell, M.S.A., Granger S., Chadwick, D., Haygarth, P. Defra-IWAM policy
session on buffer strips, Defra, Nobel House, 8th April 2008.
Hawkins, J.M.B., Blackwell, M.S.A., Granger S., Chadwick, D., Haygarth, P. Presentation of WQ0126
project at AstraZeneca, Brixham, 2009.
Jane Hawkins. Environmental Monitoring and Control of Diffuse Pollution at North Wyke. Invited
presentation at RS-Hydro Workshop, Chateau Impney, Worcester,2009.
Tegan Darch, Phil Haygarth, Dave Chadwick, Martin Blackwell and Jane Hawkins. Phosphorus
Dynamics in Buffer Strip Soils. PhD Symposium, Lancaster University, 2009.
Other
Link to project output on SWARM Knowledge Hub:
http://www.swarmhub.co.uk/sub_web_resources.php?id=3441