Penny J Johnes

Nutrient Imbalances in Agricultural Development

Peter M. Vitousek, Rosamond L. Naylor, Timothy E. Crews et al. · Science · 2009 · 1.4K citations

Agriculture, Agronomy, Soil Sciences +17

Geophysical Research Abstracts

Charlotte Lloyd, Jim Freer, Penny J Johnes et al. · 2013 · 825 citations

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

Penny J Johnes · Journal of Hydrology · 1996 · 722 citations

Natural Resources, Environmental Management, Hydrology +17

Using hysteresis analysis of high-resolution water quality monitoring data, including uncertainty, to infer controls on nutrient and sediment transfer in catchments

Charlotte Lloyd, Jim Freer, Penny J Johnes et al. · The Science of The Total Environment · 2015 · 336 citations · Full text

Natural Resources, Earth Sciences, Hydrology +16

Uncertainties in annual riverine phosphorus load estimation: Impact of load estimation methodology, sampling frequency, baseflow index and catchment population density

Penny J Johnes · Journal of Hydrology · 2006 · 316 citations

Natural Resources, Hydrology, Water Resources Management +16