Professor Penny J Johnes

BSc, D.Phil (Oxon.)

  • BS8 1SS

    United Kingdom

  • BS8 1SS

1989 …2020

Research output per year

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Research Output

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Chapter in a book
2013

Integrating geophysics and geoarchaeology for a heritage management toolkit in wetlands: Shapwick Heath case study.

Bunting, C., Branch, N., Robinson, S., Johnes, P. J. & Jones, L., 2013, Archaeological Prospection : Proceedings of the 10th International Conference - Vienna May 29th - June 2nd 2013. Neubauer, W., Trinks, I., Salisbury, R. B. & Einwögerer, C. (eds.). Vienna: Austrian Academy of Sciences Press, Vienna, p. 215 217 p.

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

2003

Fal and Helford Special Areas of Conservation (cSAC) and the Tamar Estuaries complex cSAC/Special Protection Area (pSPA): estimation of diffuse and point-source nutrient inputs

Fraser, A., Butterfield, D., Uncles, R., Johnes, P. J. & Harrod, T. R., 2003, Site Characterisation of the South West European Marine Sites: Fal and Helford cSAC. Langston, W. J., Chesman, B. S., Burt, G. R., Hawkins, S. J., Readman, J. & Worsfold, P. (eds.). Plymouth, Devon, UK: Marine Biological Association of the United Kingdom, Vol. Occasional Publication 8. 160 p. (Occasional Publication of the Marine Biological Association).

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

2002

A comparison of methods for estimating the riverine export of nitrogen from large watersheds

Alexander, R. B., Johnes, P. J., Boyer, E. W. & Smith, R. A., 2002, The Nitrogen Cycle at Regional to Global Scales. Boyer, E. W. & Howarth, R. W. (eds.). Springer, Dordrecht, p. 295-339

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

Landscape, regional and global estimates of N flux from land to ocean: errors and uncertainties

Johnes, P. J. & Butterfield, D., 2002, The Nitrogen Cycle at Regional to Global Scales. Boyer, E. W. & Howarth, R. W. (eds.). Springer, Dordrecht, p. 429-476

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

2000

Understanding lake and catchment history as a tool for integrated lake management

Johnes, P. J., 2000, The Ecological Bases for Lake and Reservoir Management: Developments in Hydrobiology. Harper, D. M., Brierley, W., Ferguson, A. J. D. & Phillips, G. L. (eds.). Kluwer Academic Publishers, Vol. 136. p. 41-60

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

1997

New approaches to the monitoring and classifying of standing waters

Moss, B., Johnes, P. J. & Phillips, G. L., 1997, Freshwater Quality: defining the indefinable. Boon, P. J. & Howell, D. J. (eds.). Edinburgh: HMSO, p. 118-133

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

1995

Ecology and management of wetlands

Hughes, J. M. R. & Johnes, P. J., 1995, The Hydrology and Hydrochemistry of British Wetlands. Hughes, J. M. R. & Heathwaite, A. L. (eds.). John Wiley & Sons, Ltd., p. 317-323

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

1993

A procedure for the digestion of natural water samples for determination of total N and total P concentrations in freshwaters

Johnes, P. J. & Heathwaite, A., 1993, Chemical analysis of natural waters in environmental research : a collection of papers presented at an International Conference on Chemical Analysis of Natural Waters in Environmental Research: analytical solutions of current problems, held at the Institute Terrestrial Ecology, Merlewood Research Station, Grange-over-Sands, Cumbria, UK, September 1991: Science of the Total Environment. Cape, J., Hilton, J., Kennedy, V. H. & Rowland, A. (eds.). 1-3 ed. Vol. 135.

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

Nitrate in surface waters

Johnes, P. J. & Burt, T. P., 1993, Nitrate: processes, patterns and controls. Burt, T. P., Heathwaite, A. L. & Trudgill, S. T. (eds.). John Wiley & Sons, Ltd., p. 269-317

Research output: Chapter in Book/Report/Conference proceedingChapter in a book

12 Citations (Scopus)
1991

Water quality trends in the Windrush catchment: Nitrogen speciation and sediment interactions

Johnes, P. J. & Burt, T. P., Aug 1991, Sediment and Stream Water Quality in a Changing Environment: Trends and Explanation. IAHS Press, Vol. 209. p. 349-357 9 p.

Research output: Chapter in Book/Report/Conference proceedingChapter in a book