Dr Lucy Crockford

Dr Lucy Crockford BSc (Hons), MSc, PhD

Lecturer in Soil and Water Management 

Contact details

Send Lucy Crockford a message

Tel: +44 (0)1952 815476
Twitter: @SWLecLC
Academic Department: Crop and Environment Sciences
Building: Ancellor Yard
Office: AY04
Research profile: ORCID

Module Leader

Publications

  • Crockford L., Jordan P., Melland A R., Taylor D. (2015) Storm-triggered, increased supply of sediment-derived phosphorus to the epilimnion in a small freshwater lake Inland Waters 5 (This study investigated internal loading of sediment-derived phosphorus (P) in a small, meso-eutrophic lake (surface area 0.2 km2, catchment area 2.7 km2, mean depth 6 m, maximum depth 14 m) on the Atlantic seaboard of western Europe. High resolution data collected over 2.5 years (1 Mar 2011 to 30 Sep 2013) revealed inconsistent patterns in (1) the timing and magnitude of lake turnover and (2) the relative importance of the transfer of hypolimnetic sediment-derived P to the epilimnion when compared with external catchment loading. Lake turnover events during spring and summer had the effect of increasing the internal loading of epilimnetic P during the main growing season, thus adding to eutrophication pressure and contributing to algal blooms in the lake. Abrupt pre-fall (autumnal) turnover events and associated increases in eutrophication pressure such as those reported here may become more frequent occurrences in western Europe because of warming-induced increases in Atlantic summer storm frequency and magnitude, and they could counter the apparent effectiveness of measures aimed at reducing eutrophication impacts through limiting external loadings of nutrients from the catchment.)
  • O'Dwyer B., Crockford L., Jordan P., Hislop L., Taylor D. (2013) A palaeolimnological investigation into nutrient impact and recovery in an agricultural catchment Journal of Environmental Management 124 (Abstract: Widespread deterioration in water quality as a result of anthropogenic activity has led to the development and implementation of measures aimed at the protection of water resources in the EU. To date, however, relatively little attention has been paid to the effectiveness of these measures. Evidence from an enrichment-sensitive lake permitted reconstructions of changes in ecological and chemical water quality over the last c. 150-200 years, a period that includes a mid to late 20th century intensification of agriculture that was widely experienced across the European Union and the subsequent implementation of measures aimed at protecting water resources against pollution from farming. The data show the development of a more nutrient-tolerant diatom community from early in the 20th century, while the main trophic changes occurred from the 1950s, with the site becoming eutrophic by the 1960s. Heightened enrichment is thought to be linked to enhanced levels of phosphorus (P) transfers from the surrounding grassland catchment owing to an intensification of agricultural activities locally. Most recently, since the late 1990s and particularly post-2007, evidence suggests a decrease in aquatic enrichment, despite continued increases in agricultural intensification. This decoupling is likely to mark a successful implementation in 2006 of measures aimed at decreasing diffuse nutrient transfers from catchments linked to agri-environmental policies in Europe. The research highlights the importance of enrichment-sensitive water bodies as sentinel sites in the monitoring of both external and internal nutrient loadings as agricultural activities and other pressures change within the context of implementing regulatory responses to earlier declines in water quality.)

Tel: +44 (0)1952 815476
Twitter: @SWLecLC
Academic Department: Crop and Environment Sciences
Building: Ancellor Yard
Office: AY04
Research profile: ORCID

Your details




Enquiry

Message:

Validation

Please type the code you see in the image into the text box below:

Validation code