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
Abstract

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

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.
Paper

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

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.
Paper

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.
Chapter

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