Yates, C. A. and Johnes, P. J. (2013) Nitrogen speciation and phosphorus fractionation dynamics in a lowland chalk catchment. Science of the Total Environment, 444. pp. 466-479. ISSN 0048-9697 doi: https://doi.org/10.1016/j.scitotenv.2012.12.002

Matias, N.-G. and Johnes, P. J. (2012) Catchment phosphorous losses: an export coefficient modelling approach with scenario analysis for water management. Water Resources Management, 26 (5). pp. 1041-1064. ISSN 0920-4741 doi: https://doi.org/10.1007/s11269-011-9946-3

Howarth, R., Swaney, D., Billen, G., Garnier, J., Hong, B., Humborg, C., Johnes, P., Mörth, C.-M. and Marino, R. (2012) Nitrogen fluxes from the landscape are controlled by net anthropogenic nitrogen inputs and by climate. Frontiers in Ecology and the Environment, 10 (1). pp. 37-43. ISSN 1540-9295 doi: https://doi.org/10.1890/100178

Leip, A., Achermann, B., Billen, G., Bleeker, A., Bouwman, A., de Vries, W., Dragosits, U., Doring, U., Fernall, D., Geupel, M., Herolstab, j., Johnes, P., Le Gall, A. C., Monni, S., Neveceral, R., Orlandini, L., Prud'homme, M., Reuter, H., Simpson, D., Seufert, G., Spranger, T., Sutton, M., van Aardenne, J., Voss, M. and Winiwarter, W. (2011) Integrating nitrogen fluxes at the European scale. In: Sutton, M., Howard, C., Erisman, J. W., Billen, G., Bleeker, A., Greenfelt, P., van Grinsven, H. and Grizzette, B. (eds.) The European Nitrogen Assessment. Cambridge University Press, Cambridge, pp. 345-376. ISBN 9781107006126

Durand, P., Breuer, L., Johnes, P. J., Billen, G., Butturini, A., Pinay, G., van Grinsven, H., Garnier, J., Rivett, M., Reay, D. S., Curtis, C., Siemens, J., Maberly, S., Kaste, O., Humborg, C., Loeb, R., de Klein, J., Hejzlar, J., Skoulikidis, N., Kortelainen, P., Lepisto, A. and Wright, R. (2011) Nitrogen processes in aquatic ecosystems. In: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., van Grinsven, H. and Grizzetti, B. (eds.) European Nitrogen Assessment. Cambridge University Press, Cambridge, pp. 126-146. ISBN 9781107006126

Oenema, O., Salomez, J., Branquinho, C., Budnakova, M., Cermak, P., Geupel, P., Johnes, P., Tomkins, C., Spranger, T., Erisman, J. W., Pallìere, C., Maene, L., Alonso, R., Maas, R., Magid, J., Sutton, M. A. and van Grinsven, H. (2011) Developing integrated approaches to nitrogen management. In: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., van Grinsven, H. and Grizzetti, B. (eds.) European Nitrogen Assessment. Cambridge University Press, UK, pp. 541-550. ISBN 9781107006126

Leip, A., de Vries, W., Achermann, B., Billen, G., Bleeker, A., Bouwman, L., Döring, U., Geupel, M., Johnes, P., Le Gall, A. C., Monni, S., Orlandini, A., Prod’homme, M., Simpson, D., Spranger, T., van Aardenne, J. and Winiwarter, W. (2011) Integrating nitrogen fluxes at the European scale. In: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., van Grinsven, H. and Grizzetti, B. (eds.) European Nitrogen Assessment. Cambridge University Press, UK, pp. 345-376. ISBN 9781107006126

Grizzetti, B., Bouraoui, F., Billen, G., van Grinsven, H., Cardoso, A. C., Thieu, V., Garnier, J., Curtis, C., Howarth, R. W. and Johnes, P. (2011) Nitrogen as a threat to European water quality. In: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., van Grinsven, H. and Grizzetti, B. (eds.) European Nitrogen Assessment. Cambridge University Press, UK, pp. 379-404. ISBN 9781107006126

Billen, G., Silvestre, M., Grizzetti, B., Leip, A., Bouraoui, F., Behrendt, H., Garnier, J., Humborg, C., Smedberg, E., Johnes, P., Kaste, O., Curtis, C., Lepisto, A., Kortelainen, P., Ganeshram, R., Beusen, A. and Voss, M. (2011) Nitrogen flows from European regional watersheds to coastal marine waters. In: Sutton, M. A., Howard, C. M., Erisman, J. W., Billen, G., Bleeker, A., Grennfelt, P., van Grinsven, H. and Grizzetti, B. (eds.) European Nitrogen Assessment. Cambridge University Press, UK, pp. 271-297. ISBN 9781107006126

Hartikainen, H., Johnes, P., Moncrieff, C. and Okamura, B. (2009) Bryozoan populations reflect nutrient enrichment and productivity gradients in rivers. Freshwater Biology, 54 (11). pp. 2320-2334. ISSN 0046-5070 doi: https://doi.org/10.1111/j.1365-2427.2009.02262.x

Vitousek, P. M., Naylor, R., Crews, T., David, M. B., Drinkwater, L. E., Holland, E., Johnes, P. J., Katzenberger, J., Martinelli, L. A., Matson, P. A., Nziguheba, G., Ojima, D., Palm, C. A., Robertson, G. P., Sanchez, P. A., Townsend, A. R. and Zhang, F. S. (2009) Nutrient Imbalances in Agricultural Development. Science, 324 (5934). pp. 1519-1520. ISSN 0036-8075 doi: https://doi.org/10.1126/science.1170261

Vitousek, P. M., Naylor, R., Crews, T., David, M. B., Drinkwater, L. E., Holland, E., Johnes, P. J., Katzenberger, J., Martinelli, L. A., Matson, P. A., Nziguheba, G., Ojima, D., Palm, C. A., Robertson, G. P., Sanchez, P. A., Townsend, A. R. and Zhang, F. S. (2009) Nutrient Imbalances: Pollution Remains Response. Science, 326 (5953). pp. 665-666. ISSN 0036-8075

Johnes, P.J., Foy, R., Butterfield, D. and Haygarth, P.M. (2007) Land use for England and Wales: evaluation of management options to support 'good ecological status' in surface freshwaters. Soil Use and Management, 23 (Suppl 1). pp. 176-196. doi: https://doi.org/10.1111/j.1475-2743.2007.00120.x

Johnes, P.J. (2007) Meeting ecological restoration targets in European Waters: a challenge for animal agriculture. In: Swain, D., Charmley, E., Steel, J. and Coffey, S. (eds.) Redesigning Animal Agriculture: the challenge for the 21st century. CAB International, Wallingford, pp. 185-203. ISBN 9781845932237

Johnes, P. J. (2007) Uncertainties in annual riverine phosphorus load estimation: Impact of load estimation methodology, sampling frequency, baseflow index and catchment population density. Journal of Hydrology, 332 (1-2). pp. 241-258. ISSN 0022-1694 doi: https://doi.org/10.1016/j.jhydrol.2006.07.006

Peters, N.E., Reynolds, B. and Johnes, P.J. (2007) Uncertainty of water-quality predictions in ungauged basins (PUBs). International Association for Hydrological Sciences Publication, 309. pp. 63-73.

Wright, K.A.L., Johnes, P. J., Nisbet, T. and Sellers, G. (2006) Investigation into best practice for the design and management of successfully engineered wetland habitat systems on brownfield land. In: Davies, B. R. and Thompson, S. (eds.) Water and the landscape: The landscape ecology of freshwater ecosystems : proceedings of the fourteenth annual IALE (UK) conference held at Oxford Brookes University, September 2006. International Association of Landscape Ecology, Oxford, pp. 248-255. ISBN 9780954713041

Olsson, R., Rekolainen, S., Sjöberg, B., Reisner, R., Nielsen, K., Johnes, P.J. and Piegay, H. (2006) Water Framework Directive - WFD implementation in a European perspective. Report from a workshop at the Royal Swedish Academy of Agriculture and Forestry, 29 November 2005. Kungl. Skogs-och Lantbruksakademiens Tidskrift, 8. ISSN 0023-5350

Bennion, H., Johnes, P., Ferrier, R., Phillips, G. and Haworth, E. (2005) A comparison of diatom phosphorus transfer functions and export coefficient models as tools for reconstructing lake nutrient histories. FRESHWATER BIOLOGY , 50 (10). pp. 1651-1670. ISSN 0046-5070 doi: https://doi.org/10.1111/j.1365-2427.2005.01428.x

Wade, A. J. ORCID: https://orcid.org/0000-0002-5296-8350, Whitehead, P., Jarvie, H. P., Neal, C., Prior, H. and Johnes, P. J. (2004) Nutrient monitoring, simulation and management within a major lowland UK river system: the Kennet. Mathematics and Computers in Simulation, 64 (3-4). pp. 307-317. ISSN 0378-4754 doi: https://doi.org/10.1016/s0378-4754(03)00097-1

Evans, D. J. and Johnes, P. (2004) Physico-chemical controls on phosphorus cycling in two lowland streams. Part 1 - the water column. Science of the Total Environment, 329 (1-3). pp. 145-163. ISSN 0048-9697 doi: https://doi.org/10.1016/j.scitotenv.2004.02.016

Evans, D. J., Johnes, P. J. and Lawrence, D. S. (2004) Physico-chemical controls on phosphorus cycling in two lowland streams. Part 2 - The sediment phase. Science of the Total Environment, 329 (1-3). pp. 165-182. ISSN 0048-9697 doi: https://doi.org/10.1016/j.scitotenv.2004.02.023

Johnes, P.J., Whitehead, P., Davis, S., Wade, A. ORCID: https://orcid.org/0000-0002-5296-8350 and Butterfield, D., (2003) Effectiveness of eutrophication control by phosphorus reduction. R & D Technical Report . March 2003. Technical Report. Environment Agency

Heathwaite, A. L., Fraser, A. I., Johnes, P. J., Hutchins, M., Lord, E. and Butterfield, D. (2003) The Phosphorus Indicators Tool: a simple model of diffuse P loss from agricultural land to water. Soil Use and Management, 19 (1). pp. 1-11. ISSN 0266-0032 doi: https://doi.org/10.1111/j.1475-2743.2003.tb00273.x

Evans, D. , Johnes, P. and Lawrence, D. (2003) Suspended and bed load sediment transport dynamics in two lowland UK streams—storm integrated monitoring. Erosion and Sediment Transport Measurement in Rivers: Technological and Methodological Advances, 283. pp. 103-110. ISSN 0144-7815

Johnes, P. J. and Butterfield, D. (2002) Landscape, regional and global estimates of nitrogen flux from land to sea: errors and uncertainties. Biogeochemistry, 57-58 (1). pp. 429-476. ISSN 1573-515X doi: https://doi.org/10.1023/A:1015721416839

Prior, H. and Johnes, P. J. (2002) Regulation of surface water quality in a Cretaceous chalk catchment, UK: an assessment of the relative importance of instream and wetland processes. Science of the Total Environment, 282-283. pp. 159-174. ISSN 0048-9697 doi: https://doi.org/10.1016/S0048-9697(01)00950-0

Whitehead, P.G., Johnes, P. J. and Butterfield, D. (2002) Steady state and dynamic modelling of nitrogen in the River Kennet: impacts of land use change since the 1930s. Science of the Total Environment, 282-283. pp. 417-434. ISSN 0048-9697 doi: https://doi.org/10.1016/S0048-9697(01)00927-5

Alexander, R. B., Johnes, P. J., Boyer, E. W. and Smith, R. A. (2002) A comparison of models for estimating the riverine export of nitrogen from large watersheds. Biogeochemistry, 57/58 (1). pp. 295-339. ISSN 1573-515X doi: https://doi.org/10.1023/A:1015752801818

Uncles, R.J., Fraser, A.I., Butterfield, D., Johnes, P. and Harrod, T.R. (2002) The prediction of nutrients into estuaries and their subsequent behaviour: application to the Tamar and comparison with the Tweed, U.K. Hydrobiologia, 475-476 (1). pp. 239-250. ISSN 0018-8158 doi: https://doi.org/10.1023/A:1020383224172

Johnes, P. (1999) Understanding lake and catchment history as a tool for integrated lake management. Hydrobiologia, 395/396. pp. 41-60. ISSN 0018-8158

Burt, T. P. and Johnes, P. (1997) Managing Water Quality in Agricultural Catchments. Transactions of the Institute of British Geographers, 22. pp. 61-68. ISSN 0020-2754

Johnes, P. and Heathwaite, A. L. (1997) Modelling the impact of land use change on water quality in agricultural catchments. Hydrological Processes, 11 (3). pp. 269-286. ISSN 0885-6087 doi: https://doi.org/10.1002/(SICI)1099-1085(19970315)11:3<269::AID-HYP442>3.0.CO;2-K

Heathwaite, A. L. and Johnes, P. (1996) Contribution of N Species and P Fractions to Stream Water Quality in Agricultural Catchments. Hydrological Processes, 10 (7). pp. 971-983. ISSN 0885-6087 doi: https://doi.org/10.1002/(SICI)1099-1085(199607)10:7<971::AID-HYP351>3.0.CO;2-N

Johnes, P. J. (1996) Evaluation and management of the impact of land use change on the nitrogen and phosphorus load delivered to surface waters: the export coefficient modelling approach. Journal of Hydrology, 183. pp. 323-349. ISSN 0022-1694 doi: https://doi.org/10.1016/0022-1694(95)02951-6

Johnes, P. and Wilson, H. M. (1996) The Limnology of Slapton Ley. Field Studies, 8. pp. 585-612.

Burt, T. P., Heathwaite, A. L. and Johnes, P. J. (1996) Stream water quality and nutrient export in the Slapton Catchments. Field Studies, 8. pp. 613-627.

Heathwaite, A. L., Johnes, P. and Peters, N. E. (1996) Trends in nutrients. Hydrological Processes, 10 (2). pp. 263-293. ISSN 0885-6087 doi: https://doi.org/10.1002/(SICI)1099-1085(199602)10:2<263::AID-HYP441>3.0.CO;2-K

Johnes, P., Moss, B. and Phillips, G. (1996) The determination of total nitrogen and total phosphorus concentrations in freshwaters from land use, stock headage and population data: testing of a model for use in conservation and water quality management. Freshwater Biology, 36. pp. 451-473. ISSN 0046-5070

Moss, B., Johnes, P. and Phillips, G. (1994) August Thienemann and Loch Lomond - an approach to the design of a system for monitoring the state of north-temperate standing waters. Hydrobiologia, 290. pp. 1-12. ISSN 0018-8158

Johnes, P. and Heathwaite, A. L. (1992) A procedure for the simultaneous determination of total nitrogen and total phosphorus in freshwater samples using persulphate microwave digestion. Water Research, 26 (10). pp. 1281-1287. ISSN 0043-1354

Johnes, P. J. and Burt, T. P. (1991) Water quality trends in the Windrush catchment: Nitrogen speciation and sediment interactions. Sediment and Stream Water Quality in a Changing Environment, 209. pp. 349-357. ISSN 0144-7815

Johnes, P. J. and O'Sullivan, P. E. (1989) The Natural History of Slapton Ley Nature Reserve XVIII: nitrogen and phosphorus losses from the catchment - an export coefficient modelling approach. Field Studies, 7. pp. 287-309.