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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Conference Contribution (Conference Proceeding)
2014

Ground penetrating radar as a tool to improve heritage management of wetlands

Bunting, C., Branch, N., Steve, R. & Johnes, P., Jul 2014, 15th International Conference on Ground Penetrating Radar (GPR), June 30 - July 4, 2014, Brussels,. Institute of Electrical and Electronics Engineers (IEEE), p. 54-59 6 p. doi: 10.1109/ICGPR.2014.6970384

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2013

Assessing the effects of sampling design on water quality status classification

Lloyd, C. E. M., Freer, J. E., Johnes, P. J. & Collins, A., 2013, Geophysical Research Abstracts. Vol. 15. p. EGU2013-13032

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Catchment Science in the C21st: challenges, future directions and research needs.

Demonstration Test Catchments Team & Environmental Virtual Observatory Team, 2013, AGU Fall Meeting Abstracts. American Geophysical Union

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Investigating catchment-scale hysteretic behaviour of nutrients at annual and individual storm time-resolutions.

Lloyd, C. E. M., Freer, J. E., Johnes, P. J. & Collins, A., 2013, Geophysical Research Abstracts. Vol. 15. p. EGU2013-12983

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2012

A framework for analysing water quality observations to detect change in the context of natural variability and uncertainty

Lloyd, CEM., Freer, J. E., Johnes, P. J. & Collins, A., 2012, European Geophysical Union General Assembly, Vienna, Austria.

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2010

A pilot Virtual Observatory (pVO) for integrated catchment science – Demonstration of national scale modelling of hydrology and biogeochemistry

Freer, J. E., Bloomfield, J. P., Johnes, P. J., Macleod, C. J. A. & Reaney, S., 13 Dec 2010, American Geophysical Union Meeting, San Francisco, USA, 13-17th December, 2010. American Geophysical Union, H33A-1124

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2009

Nutrient management for ecological benefit at Barton Broad and Bosherston Lily Pools, UK – achievements, costs and long term sustainability issues.

Johnes, P. J., 2009, Mitigation options for nutrient reduction in surface water and groundwaters: Ecological response to system manipulation. Istvanovics, V., Ekholm, P., Irvine, K., Johnes, P. J. & Chardon, W. (eds.). Netherlands: Alterra, p. 26

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2008

The role of the riparian zone in complex Chalk aquifer-stream systems

Gooddy, D., Binley, A., Bloomfield, J., Johnes, P. J., Peach, D., Shand, P. & Wheater, H., 2008, Geophysical Research Abstracts. Copernicus GmbH, Vol. 9.

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2002

Phosphorus and Sediment Yield Characterization In Catchments (psychic)

Withers, P. J., Quinton, J., Heathwaite, A., Johnes, P. J., Walling, D. E. & Jarvie, H., 2002, Geophysical Research Abstracts. Copernicus GmbH, p. 1287

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2000

Assessing nutrient inputs and their impact in catchments, UK

Phillips, G. L. & Johnes, P. J., 2000, Implementing the Water Framework Directive: A seminar series on water. Jones, T. (ed.). Brussels: World Wide Fund for Nature, p. 39-44

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1997

Nitrogen Speciation Dynamics in Two Contrasting Riparian Ecosystems

Prior, H., Johnes, P. J., Gibson, M. & Hughes, J. M. R., 1997, Biogeomon '97: Journal of Conference Abstracts. Cambridge University Press, p. 273

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Nutrient Speciation Dynamics in UK Rivers: Seasonality and Flow Controls

Johnes, P. J., 1997, Biogeomon '97: Journal of Conference Abstracts. 2 ed. Cambridge University Press, Vol. 2. p. 206

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1992

Modelling the impact on water quality of land use change in the Windrush catchment

Johnes, P. J. & Burt, T., 1992, Land use change: causes and consequences: ITE Symposium no. 27. Whitby, M. (ed.). London: HMSO, p. 195-196

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)