Dr Mary Ockenden

Senior Research Associate

Research Overview

My research interests are in the hydrology of managed ecosystems. In particular I am interested in runoff generation and connectivity and the mobilisation and transport of pollutants in overland flow. My current project (NutCat 2050) aims to build a framework for predicting nutrient runoff under different climate change and land use change scenarios. This will help to improve understanding of nutrient movement and help farmers to plan land management. I have also worked on the Mitigation Options for Phosphorus and Sediment 2 Project (MOPS2), which determined the effectiveness of field wetlands for controlling diffuse pollution from agriculture (mops2.diffusepollution.info).

Reduced nutrient pollution in a rural stream following septic tank upgrade and installation of runoff retention measures
Ockenden, M., Quinton, J., Favaretto, N., Deasy, C., Surridge, B. 07/2014 In: Environmental Science: Processes and Impacts. 16, 7, p. 1637-1645. 9 p.
Journal article

Keeping agricultural soil out of rivers: evidence of sediment and nutrient accumulation within field wetlands in the UK
Ockenden, M., Deasy, C., Quinton, J., Surridge, B., Stoate, C. 15/03/2014 In: Journal of Environmental Management. 135, p. 54-62. 19 p.
Journal article

Quantifying the differential contributions of deep groundwater to streamflow in nested basins, using both water quality characteristics and water balance
Ockenden, M., Chappell, N., Neal, C. 2014 In: Hydrology Research. 45, 2, p. 200-212. 13 p.
Journal article

Evaluation of field wetlands for mitigation of diffuse pollution from agriculture: Sediment retention, cost and effectiveness
Ockenden, M., Deasy, C., Quinton, J., Bailey, A., Surridge, B., Stoate, C. 24/11/2012 In: Environmental Science and Policy. 24, p. 110-119. 10 p.
Journal article

Improving water quality in agricultural catchments: sediment and nutrient retention in field wetlands
Ockenden, M., Deasy, C., Quinton, J., Stoate, C. 2012

Nutrient reduction in field wetlands: do they work for dissolved nutrients?
Favaretto, N., Ockenden, M., Deasy, C., Quinton, J. 2012

Reducing diffuse pollution in agricultural catchments: retention of sediment and nutrients in field wetlands
Ockenden, M., Deasy, C., Quinton, J., Favaretto, N., Stoate, C. 2012 In: Hydrology for a Changing World . 8 p.

Sediment and nutrient trapping in field wetlands.
Ockenden, M., Deasy, C., Quinton, J., Favaretto, N., Stoate, C. 2012

The effectiveness of field wetlands in retaining pollutants from agricultural runoff: case studies from the UK
Ockenden, M., Deasy, C., Quinton, J., Favaretto, N., Surridge, B., Stoate, C. 2012 In: Agriculture and the Environment IX: Valuing Ecosystems: Policy, Economic and Management Interactions. Edinburgh p. 244-249. 6 p.

Identification of the dominant runoff pathways from the data-based mechanistic modelling of nested catchments in temperate UK.
Ockenden, M.C., Chappell, N.A. 13/05/2011 In: Journal of Hydrology. 402, 1-2, p. 71-79. 9 p.
Journal article

Identification of catchment runoff processes as a basis for defining water quality protection zones
Ockenden, M. 2010 Lancaster University. 266 p.
Doctoral Thesis

The effect of topography, subsurface strata and land-use on observed distributions of soil moisture within a sub-catchment of the River Eden, Cumbria.
Chappell, N.A., Ockenden, M. 2008 In: Sustainable Hydrology for the 21st Century. Proc. 10th BHS National Hydrology Symposium, Exeter. British Hydrological Society p. 202-207. 6 p. ISBN: 1903741165.

ISIS: an instrument for measuring erosion shear stress in situ
Williamson, H.J., Ockenden, M.C. 5/01/1996 In: Estuarine, Coastal and Shelf Science. 42, 1, p. 1-18. 18 p.
Journal article

Cohesive sediment transport processes
TEISSON, C., OCKENDEN, M., LEHIR, P., KRANENBURG, C., HAMM, L. 12/1993 In: Coastal Engineering. 21, 1-3, p. 129-162. 34 p.
Journal article

The characterization of cohesive sediment properties
BERLAMONT, J., OCKENDEN, M., TOORMAN, E., WINTERWERP, J. 12/1993 In: Coastal Engineering. 21, 1-3, p. 105-128. 24 p.
Journal article

A model for the settling of nonuniform cohesive sediment in a laboratory flume and an estuarine field setting
OCKENDEN, M.C. 1993 In: Journal of Coastal Research. 9, 4, p. 1094-1105. 12 p.
Journal article

Application of a mathematical-model to investigate sedimentation at Eastham Dock, Mersey Estuary
DISERENS, A.P., OCKENDEN, M.C., DELO, E.A. 1993 In: Nearshore and estuarine cohesive sediment transport. WASHINGTON : AMER GEOPHYSICAL UNION p. 486-503. 18 p. ISBN: 0-87590-256-1.
Conference contribution

Laboratory testing of muds
OCKENDEN, M.C., DELO, E.A. 09/1991 In: Geo-Marine Letters. 11, 3-4, p. 138-142. 5 p.
Journal article

Sediment transport model for muddy tidal rivers
DELO, E.A., OCKENDEN, M.C. 1989 In: Sediment transport modeling. NEW YORK : AMER SOC CIVIL ENGINEERS p. 314-319. 6 p. ISBN: 0-87262-718-7.
Conference contribution