nerc.ac.uk

Items where NERC Author is "Clarke, Ralph"

Up a level
Export as [feed] RSS
Group by: Item Type | Date | No Grouping
Number of items: 68.

Publication - Article

O'Hare, Matthew T; Clarke, Ralph T.; Bowes, Michael J.; Cailes, Claire; Henville, Paul; Bissett, Nicola; McGahey, Caroline; Neal, Margaret. 2010 Eutrophication impacts on a river macrophyte. Aquatic Botany, 92 (3). 173-178. 10.1016/j.aquabot.2009.11.001

Smith, J.T.; Clarke, R.T.; Bowes, M.J.. 2010 Are groundwater nitrate concentrations reaching a turning point in some chalk aquifers? Science of the Total Environment, 408. 4722-4732. 10.1016/j.scitotenv.2010.07.001

Thomas, J.A.; Simcox, D.J.; Clarke, R.T.. 2009 Successful conservation of a threatened Maculinea butterfly. Science, 325 (5936). 80-83. 10.1126/science.1175726

Sundermann, Andrea; Pauls, Steffen U.; Clarke, Ralph T.; Haase, Peter. 2008 Within-stream variability of benthic invertebrate samples and EU Water Framework Directive assessment results. Fundamental and Applied Limnology (Archiv fur Hydrobiologie), 173 (1). 21-34. 10.1127/1863-9135/2008/0173-0021

O'Hare, Matthew T.; Hutchinson, Kathryn A.; Clarke, Ralph T.. 2007 The drag and reconfiguration experienced by five macrophytes from a lowland river. Aquatic Botany, 86 (3). 253-259. 10.1016/j.aquabot.2006.11.004

Haase, Peter; Murray-Bligh, John; Lohse, Susanne; Pauls, Steffen; Sundermann, Andrea; Gunn, Rick; Clarke, Ralph. 2006 Assessing the impact of errors in sorting and identifying macroinvertebrate samples. Hydrobiologia, 566. 505-521. 10.1007/s10750-006-0075-6

Staniszewski, Ryszard; Szoszkiewicz, Krzysztof; Zbierska, Janina; Lesny, Jacek; Jusik, Szymon; Clarke, Ralph T.. 2006 Assessment of sources of uncertainty in macrophyte surveys and the consequences for river classification. Hydrobiologia, 566. 235-246. 10.1007/s10750-006-0093-4

Friberg, Nikolai; Sandin, Leonard; Furse, Mike T.; Larsen, Soren E.; Clarke, Ralph T.; Haase, Peter. 2006 Comparison of macroinvertebrate sampling methods in Europe. Hydrobiologia, 566. 365-378. 10.1007/s10750-006-0083-6

Johnson, Richard K.; Hering, Daniel; Furse, Mike T.; Clarke, Ralph T.. 2006 Detection of ecological change using multiple organism groups: metrics and uncertainty. Hydrobiologia, 566. 115-137. 10.1007/s10750-006-0101-8

Clarke, R. T.; Murphy, J. F.. 2006 Effects of locally rare taxa on the precision and sensitivity of RIVPACS bioassessment of freshwaters. Freshwater Biology, 51 (10). 1924-1940. 10.1111/j.1365-2427.2006.01611.x

Clarke, Ralph T.; Lorenz, Armin; Sandin, Leonard; Schmidt-Kloiber, Astrid; Strackbein, Joerg; Kneebone, Nick T.; Haase, Peter. 2006 Effects of sampling and sub-sampling variation using the STAR-AQEM sampling protocol on the precision of macroinvertebrate metrics. Hydrobiologia, 566. 441-459. 10.1007/s10750-006-0078-3

Clarke, Ralph T.; Hering, D.. 2006 Errors and uncertainty in bioassessment methods - major results and conclusions from the STAR project and their application using STARBUGS. Hydrobiologia, 566. 433-439. 10.1007/s10750-006-0079-2

Clarke, Ralph T.; Davy-Bowker, John; Sandin, L.; Friberg, N.; Johnson, R. K.; Bis, B.. 2006 Estimates and comparisons of the effects of sampling variation using 'national' macroinvertebrate sampling protocols on the precision of metrics used to assess ecological status. Hydrobiologia, 566. 477-503. 10.1007/s10750-006-0076-5

Lorenz, Armin; Clarke, Ralph T.. 2006 Sample coherence - a field study approach to assess similarity of macroinvertebrate samples. Hydrobiologia, 566. 461-476. 10.1007/s10750-006-0077-4

Bass, J. A. B.; Neale, M. W. N.; Kneebone, N. T.; Corbin, T. A.; Gunn, R. J. M.; Blackburn, J. H.; Davy-Bowker, J.; Clarke, R. T.; Jones, J. I.. 2006 Sampling techniques for the biomonitoring of deep rivers. Bulletin of the North American Benthological Society, Special Program .

Clarke, R. T.; Furse, M. T.. 2006 Sampling variation and STARBUGS (STAR Bioassessment Uncertainty Guidance Software). Bulletin of the North American Benthological Society, Special Program .

Finlay, Bland J.; Thomas, Jeremy A.; McGavin, George C.; Fenchel, Tom; Clarke, Ralph T.. 2006 Self-similar patterns of nature: insect diversity at local to global scales. Proceedings Royal Society B, 273 (1596). 1935-1941. 10.1098/rspb.2006.3525

Davy-Bowker, John; Clarke, Ralph T.; Johnson, R. K.; Kokes, J.; Murphy, John F.; Zahradkova, S.. 2006 A comparison of the European Water Framework Directive physical typology and RIVPACS-type models as alternative methods of establishing reference conditions for benthic macroinvertebrates. Hydrobiologia, 566. 91-105. 10.1007/s10750-006-0068-5

Furse, M. T.; Tapia, G.; Clarke, R. T.. 2006 The contribution of headwater streams to the taxonomic richness of river basins. Bulletin of the North American Benthological Society, Special Program .

Davy-Bowker, John; Sweeting, Wayne; Wright, Nicole; Clarke, Ralph T.; Arnott, Sean. 2006 The distribution of bethnic and hyporheic macroinvertebrates from the heads and tails of riffles. Hydrobiologia, 563. 109-123. 10.1007/s10750-005-1482-9

Fuller, R. M.; Cox, R.; Clarke, R. T.; Rothery, P.; Hill, R. A.; Smith, G. M.; Thomson, A. G.; Brown, N. J.; Howard, D. C.; Stott, A. P.. 2005 The UK land cover map 2000: Planning, construction and calibration of a remotely sensed, user-oriented map of broad habitats. International Journal of Applied Earth Observation and Geoinformation, 7. 202-216. 10.1016/j.jag.2005.04.002

Howard, D. C.; Watkins, J. W.; Clarke, R. T.; Barnett, C. L.; Stark, G. J.. 2003 Estimating the extent and change in Broad Habitats in Great Britain. Journal of Environmental Management, 67 ((3) special issu). 219-227. 10.1016/S0301-4797(02)00175-5

Smart, S. M.; Clarke, R. T.; van de Poll, H. M.; Robertson, E. J.; Shield, E. R.; Bunce, R. G. H.; Maskell, L. C.. 2003 National-scale vegetation change across Britain; an analysis of sample-based surveillance data from the Countryside Surveys of 1990 and 1998. Journal of Environmental Management, 67 ((3) sp. issue). 239-254. 10.1016/S0301-4797(02)00177-9

Bunce, R. G. H.; Barr, C. J.; Clarke, R. T.; Howard, D. C.; Lane, A. M. J.. 1996 ITE Merlewood Land Classification of Great Britain. Journal of Biogeography, 23. 625-634.. 10.1111/j.1365-2699.1996.tb00023.x

Bunce, R. G. H.; Barr, C. J.; Clarke, R. T.; Howard, D. C.; Lane, A. M. J.. 1996 Land classification for strategic ecological survey. Journal of Environmental Management, 47. 37-60. 10.1006/jema.1996.0034

Publication - Book

Neal, C.; Clarke, R. T.; McCulloch, J., eds. 2008 A view from the watershed revisited. Sheridan Europe, 663pp.

Haines-Young, R. H.; Barr, C. J.; Black, H. I. J.; Briggs, D. J.; Bunce, R. G. H.; Clarke, R. T.; Cooper, A.; Dawson, F. H.; Firbank, L. G.; Fuller, R.; Furse, M. T.; Gillespie, M. K.; Hill, R.; Hornung, M.; Howard, D. C.; McCann, T.; Morecroft, M. D.; Petit, S.; Sier, A. R. J.; Smart, S. M.; Smith, G. M.; Stott, A. P.; Stuart, R.; Watkins, J. W.. 2000 Accounting for nature: assessing habitats in the UK countryside. London, DETR.

Publication - Book Section

Littlewood, I. G.; Clarke, R. T.; Collischonn, W.; Croke, B. F. W.. 2006 Hydrological characterisation of four Brazilian catchments using a simple rainfall-streamflow model. In: Voinov, A.; Jakeman, A. J.; Rozzoli., A. E., (eds.) Summit on environmental modelling and software. International Environmental Modelling and Software Society.

Rehfisch, M. M.; Holloway, S. J.; Yates, M. G.; Clarke, R. T.; Austin, G.; Clark, N. A.; Le V. dit Durell, S. E. A.; Eastwood, J. A.; Goss-Custard, J. D.; Swetnam, R.; West, J. R.. 1997 Predicting the effect of habitat change on waterfowl communities: a novel empirical approach. In: Goss-Custard, J. D.; Rufino, R.; Luis, A., (eds.) Effect of habitat loss and change on waterbirds. London, The Stationery Office, 116-126, 144pp. (ITE Symposium, 30).

Publication - Conference Item

Sundermann, Andrea; Haase, Peter; Clarke, Ralph; Pauls, Steffen; Lohse, Susanne; Gunn, Rick; Sporka, Ferdinand. 2005 Assessing the impact of sorting and identification errors of macroinvertebrate samples. [Other] In: International Symposium on Assessing the Ecological Status of Rivers, Lakes and Transitional Waters, Hull, UK, 11-15 July 2005. 45-46.

Davy-Bowker, J.; Clarke, R. T.; Johnson, R. K.; Kokes, J.; Murphy, J. F.; Zahradkova, S.. 2005 The European Water Framework Directive physical typology and RIVPACS-type models as alternative methods of establishing reference conditions for benthic macroinvertebrates. [Other] In: International Symposium on Assessing the Ecological Status of Rivers, Lakes and Transitional Waters, Hull, UK, 11-15 July 2005. 31-32.

Clarke, R.T.. 2005 STARBUGS (STAR Bioassessment Uncertainty Guidance Software). [Other] In: International Symposium on Assessing the Ecological Status of Rivers, Lakes and Transitional Waters, Hull, UK, 11-15 July 2005. 30.

Publication - Report

Vincent, Helen; Edwards, Francois; Baker, Roger; Dunbar, Mike; Clarke, Ralph. 2014 Deliverable 2.24. Changes in ecological status at RIvPACS reference condition sites. Wallingford, NERC/Centre for Ecology & Hydrology, 60pp. (CEH Project no. C04223)

Clarke, Ralph; Davy-Bowker, John; Dunbar, Michael; Laize, Cedric; Scarlett, Peter; Murphy, John. 2011 SNIFFER WFD 119: Enhancement of the River Invertebrate Classification Tool. Edinburgh, SNIFFER, 83pp. (CEH Project Number: C03631)

Dunbar, M.; Murphy, J.; Clarke, R.; Baker, R.; Davies, C.; Scarlett, P.. 2010 Countryside Survey: Headwater Streams Report from 2007. NERC/Centre for Ecology & Hydrology, 67pp. (CS Technical Report No. 8/07, CEH Project Number: C03259)

Bass, J. A. B.; Blust, R.; Clarke, R. T.; Corbin, T. A.; Davison, W.; de Schamphelaere, K. A. C.; Janssen, C. R.; Kalis, E. J. J.; Kelly, M. G.; Kneebone, N. T.; Lawlor, A.J.; Lofts, S.; Temminghoff, E. J. M.; Thacker, S. A.; Tipping, E.; Vincent, Colin; Warnken, K. W.; Zhang, H.. 2008 Environmental quality standards for trace metals in the aquatic environment. Bristol, Environment Agency, 177pp. (Science Report – SC030194)

Carvalho, Laurence; Dudley, Bernard; Dodkins, Ian; Clarke, Ralph; Jones, John; Thackeray, Stephen; Maberly, Stephen. 2007 Phytoplankton Classification Tool (Phase 2). Final report. Edinburgh, SNIFFER (Scotland & Northern Ireland Forum for Environmental Research), 94pp. (CEH Project Number: C03236)

Jones, John Iwan; Clarke, R. T.; Blackburn, J. H.; Gunn, R. J. M.; Kneebone, N. T.; Neale, M. W.. 2007 Lake benthic macroinvertebrates II: Quantifying uncertainty in sampling methodology. Bristol, Environment Agency, 35pp. (CEH Project Number: C02466NEW, Science Report: SC030294/SR2)

Blackburn, J. H.; Clarke, R. T.; Gunn, R. J. M.; Gunn, I. D.; Irvine, K; Jones, I. J.; Kneebone, N. T.; Neale, M. W.; O'Hare, M. T.; Tree, A.. 2007 Review of Lake Benthic Macro-invertebrate Sampling Methods and Strategy for the Water Framework Directive. Bristol, Environment Agency, 2pp. (CEH Project Number C02466NEW, Science Summary SC030294/SS)

Davy-Bowker, John; Clarke, Ralph; Furse, Mike; Davies, Cynthia; Corbin, Tracy; Murphy, John; Kneebone, Nick. 2007 RIVPACS database documentation. Final report. Edinburgh, Scotland & Northern Ireland Forum for Environmental Research (SNIFFER), 22pp. (Project WFD46)

Davy-Bowker, John; Clarke, Ralph; Furse, Mike; Davies, Cynthia; Corbin, Tracy; Murphy, John; Kneebone, Nick. 2007 RIVPACS pressure data analysis. Final report. Edinburgh, Scotland & Northern Ireland Forum for Environmental Research (SNIFFER), 22pp. (WFD46)

Neale, Martin W.; Kneebone, N. T.; Bass, Jonathan A. B.; Blackburn, John H.; Clarke, Ralph T.; Corbin, Tracy A.; Davy-Bowker, John; Gunn, Richard J. M.; Furse, M. T.; Jones, John Iwan. 2006 Assessment of the effectiveness and suitability of available techniques for sampling invertebrates in deep rivers. Final Report: November 2006. Department of Environment (DOE), Northern Ireland and Department of Environment Heritage and Local Government (DEHLG), Republic of Ireland, 97pp. (North South Shared Aquatic Resource (NS Share). T1(A5.8) - 1.1)

Carvalho, L.; Phillips, G.; Maberly, S.; Clarke, R.. 2006 Chlorophyll and phosphorus classifications for UK lakes. Final report. Edinburgh, SNIFFER, 81pp. (WFD38) (Unpublished)

Jones, I.J.; Clarke, R.T.; Blackburn, J.H.; Gunn, R.J.M.; Kneebone, N.T.; Neale, M.W.. 2006 Biological quality of lakes: Phase II: Quantifying uncertainty associated with macroinvertebrate sampling methods for lake benthos. Environment Agency, 86pp. (CEH Project Number: C02466, Environment Agency R&D Technical Report Number: 13765) (Unpublished)

Clarke, Ralph; Dunbar, Michael. 2005 Producing Generalised LIFE Response Curves. Bristol, Environment Agency, 79pp. (Science Report SC990015/SR, SCHO0305BIQJ-E-P, SC990015)

Furse, M. T.; Davy-Bowker, J.; Dawson, F. H.; Gunn, R. J. M.; Blackburn, J. H.; Gunn, I. M.; Winder, J. M.; Scarlett, P. M.; Gravelle, M.; Kneebone, N.; Nesbitt, I.; Amarillo, M.; Brereton, C.; Cannan, C. E.; Collett, G.; Collier, D.; Cooper, G.; Dent, M.; Fairfax, C. M.; Hardie, D. J.; Henville, P.; Hilton, C.; James, B.; Moorhouse, C.; Randle, Z.; Shirley, C.; Small, S. R.; Vowles, K. E.; Clarke, R. T.; Watkins, J. W.. 2003 Countryside Survey 2000. Module 2: Freshwater studies. Bristol, Environment Agency, 204pp. ( Environment Agency (R&D Technical Report E1-038/TR1))

Barr, C. J.; Bunce, R. G. H.; Clarke, R. T.; Firbank, L. G.; Gillespie, M. K.; Howard, D. C.; Petit, S.; Smart, S. M.; Stuart, R. C.; Watkins, J. W.. 2003 Methodology of Countryside Survey 2000 Module 1: Survey of Broad Habitats and Landscape Features: Final Report. CEH, 121pp. (UNSPECIFIED) (Unpublished)

Fuller, R. M.; Smith, G. M.; Sanderson, J. M.; Hill, R. A.; Thomson, A. G.; Cox, R.; Brown, N. J.; Clarke, R. T.; Rothery, P.; Gerard, F. F.. 2002 Countryside Survey 2000 Module 7. Land Cover Map 2000. Final Report. NERC/Centre for Ecology and Hydrology. (CEH: Project Report Number C00878) (Unpublished)

Welters, Ruth; Welton, Stuart; Raybould, Alan; Beaumont, William; Pinder, Adrian; Clarke, Ralph. 2001 The genetics and ecology of Atlantic salmon (Salmo salar) decline in chalk streams. NERC/Centre for Ecology & Hydrology, 261pp. (CEH Project Number C00381) (Unpublished)

Raybould, A. F.; Welters, R. E.; Welton, J. S.; Bond, J. M.; Beaumont, W. R. C.; Clarke, R. T.. 2000 The genetics and ecology of salmon decline in chalk streams. Second progress report to CEH Management Board 1 October 1999 to 30 September 2000. NERC/Centre for Ecology & Hydrology, 3pp. (CEH Project Number C00381) (Unpublished)

Fuller, R. M.; Smith, G. M.; Sanderson, J. M.; Hill, R. A.; Thomson, A. G.; Gerard, F. F.; Clarke, R. T.. 2000 Countryside Survey 2000 - Part III. Module 7. Land Cover Map 2000. Fifth Interim Report incorporating Tenth Quarterly Progress Report. NERC/Centre for Ecology and Hydrology. (CEH: Project Report Number C00878) (Unpublished)

Fuller, R. M.; Smith, G. M.; Sanderson, J. M.; Hill, R. A.; Thomson, A. G.; Gerard, F. F.; Clarke, R. T.. 2000 Countryside Survey 2000, Module 7. Land Cover Map 2000. Fifth Interim Report incorporating the Tenth Quarterly Report. NERC/Centre for Ecology and Hydrology, 30pp. (CEH: Project Report Number C00878)

Raybould, A. F.; Ladle, M.; Welters, R.E.; Welton, J.S.; Bond, J.M.; Beaumont, W.R.C.; Clarke, R.T.. 1999 The genetics and ecology of salmon decline in chalk streams. First progress report to Institute Directors 1 April 1998 to 30 September 1999. NERC/Centre for Ecology & Hydrology, 25pp. (CEH Project Number: T08068) (Unpublished)

Furse, M.T.; Davy-Bowker, J.; Clarke, R.T.. 1999 Analysis of 1995 survey data. Phase 2 post survey appraisal. R&D progress report EMA 036/pr4 for the period from 1st November 1998 to 31st January 1999. Environment Agency, 14pp. (CEH Project no. C00081) (Unpublished)

Furse, M.T.; Davy-Bowker, J.; Clarke, R.T.. 1999 Analysis of 1995 survey data. Phase 2 post survey appraisal. R&D progress report EMA 036/pr5 for the period from 1st February 1999 to 30th April 1999. Environment Agency, 87pp. (CEH Project no. C00081) (Unpublished)

Fuller, R. M.; Smith, G. M.; Sanderson, J. M.; Hill, R. A.; Thomson, A. G.; Clarke, Ralph. 1999 Countryside Survey 2000, Module 7. Land Cover Map 2000. Third Interim Report incorporating the Sixth Quarterly Report. NERC/Institute of Terrestrial Ecology, 24pp. (ITE Project No:T02083j5) (Unpublished)

Wright, J.F.; Gunn, R.J.M.; Winder, J.M.; Blackburn, J. H.; Wiggers, R.; Vowles, K.; Clarke, R.T.. 1999 An investigation of ecological change in the Rivers Kennet and Lambourn. Report for the period April 1998 - March 1999. Environment Agency, 51pp. (TFS Project no. T04073x7) (Unpublished)

Stillman, R. A.; Goss-Custard, J. D.; McGrorty, S.; West, A. D.; Durell, S. E. A. Le V. dit; Clarke, R. T.; Caldow, R. W. G.; Norris, K. J.; Johnstone, I. G.; Ens, B. J.; Bunskoeke, E. J.; v.d. Merwe, A.; van der Meer, J.; Triplet, P.; Odoni, N.; Swinfen, R.; Cayford, J. T.. 1996 Models of shellfish populations and shorebirds: final report. Wareham, Dorset, NERC/Institute of Terrestrial Ecology, 255pp. (ITE Project Number: T08057o5) (Unpublished)

Furse, M.T.; Clarke, R.T.. 1996 Analysis of 1995 survey data and RIVPACS update: R&D progress report E1/EMA 008/1 for the period 1st June to 31 August 1996. NERC/ Institute of Freshwater Ecology, 31pp. (IFE Project Number: T04053) (Unpublished)

Furse, M.T.; Clarke, R.T.. 1996 Analysis of 1995 survey data and RIVPACS update: R&D progress report EI/EMA 008/2 for the period 1st September to 30th November 1996. NERC institute of Freshwater Ecology, 12pp. (TFS No: T04071) (Unpublished)

Furse, M.T.; Clarke, R.T.. 1996 Analysis of 1995 survey data and RIVPACS update: a summary of the results of a consultation exercise on potential uses of the 1995 General Quality Assessment of biological data and their prioritisation. NERC institute of Freshwater Ecology, 52pp. (UNSPECIFIED) (Unpublished)

Wright, J.F.; Winder, J.M.; Gunn, R.J.M.; Blackburn, J.H.; Symes, K.L.; Clarke, R.T.. 1996 Survey of macroinvertebrates on the River Thames at Didcot. NERC IFE, 60pp. (TFS Project No. T04071u7) (Unpublished)

Goss-Custard, J. D.; Stillman, R. A.; McGrorty, S.; Durell, S. E. A. Le V. dit; Clarke, R. T.; Caldow, R. W. G.; Norris, K. J.; Johnstone, I. G.; Ens, B. J.. 1995 Models of shellfish populations and shorebirds: interim report. Wareham, Dorset, NERC/Institute of Terrestrial Ecology, 30pp. (ITE Project Number: T08057o5) (Unpublished)

Wright, J.F.; Furse, M.T.; Clarke, R.T.; Moss, D.; Gunn, R.J.M.; Blackburn, J.H.; Symes, K.L.; Winder, J.M.; Grieve, N.I.; Bass, J.A.B.. 1995 Testing and further development of RIVPACS: Appendices. NERC Institute of Freshwater Ecology, 106pp. (IFE Project no. T04053r5: NRA R&D Report 453) (Unpublished)

Barr, C. J.; Bunce, R. G. H.; Clarke, R. T.; Fuller, R. M.; Furse, M. T.; Gillespie, M. K.; Groom, G. B.; Hallam, C. J.; Hornung, M.; Howard, D. C.; Ness, M. J.. 1993 Countryside Survey 1990: main report. (Countryside 1990 vol.2). London, Department of the Environment, 174pp. (ITE Project No:T02051m5)

Wright, J.F.; Furse, M.T.; Clarke, R.T.; Moss, D.; Gunn, R.J.M.; Blackburn, J.H.; Winder, J.M.; Symes, K.L.; Grieve, N.I.. 1993 Testing and further development of RIVPACS (phase 2): progress report for the period October 1992 to December 1992. NERC Institute of Freshwater Ecology, 12pp. (IFE Project no. T04053r5) (Unpublished)

Wright, J.F.; Moss, D.; Gunn, R.J.M.; Blackburn, J.H.; Winder, J.M.; Symes, K.L.; Grieve, N.I.; Furse, M.T.; Clarke, R.T.. 1993 Testing and further development of RIVPACS (phase 2): progress report for the period january 1993 to March 1993. NERC Institute of Freshwater Ecology, 18pp. (IFE Project no. T04053r5) (Unpublished)

Clarke, R. T.; Leese, M. N.; Newson, A. J.. 1973 Analysis of data from Plynlimon raingauge networks, April 1971 - March 1973. Wallingford, Institute of Hydrology, 75pp. (IH Report No.27) (Unpublished)

This list was generated on Wed Nov 26 19:20:03 2014 GMT.