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High-resolution phosphorus transfers at the catchment scale: the hidden importance of non-storm transfers

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Jordan, Philip, Arnscheidt, Joerg, McGrogan, H and McCormick, S (2005) High-resolution phosphorus transfers at the catchment scale: the hidden importance of non-storm transfers. HYDROLOGY AND EARTH SYSTEM SCIENCES, 9 (6). pp. 685-691. [Journal article]

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Abstract

High-resolution measurements of total phosphorus (TP) concentrations in a stream draining a 5 km(2) agricultural catchment (a sub-catchment of Lough Neagh in Northern Ireland) were made every 10 mins by continuous flow instrumentation using new homogenisation, digestion and colorimetric phases. Concurrently, rainfall and stream discharge data were collected at 5 and 15 min. intervals. Major P flushing episodes during storm events peaked on the rising limbs of storm hydrographs. A period of baseflow also indicated the importance of other sources that maintain the stream in a eutrophic state between storm events. These data provide insights into catchment processes that conform to definite patterns that, in a coarser sampling regime, might ordinarily be attributed to sampling and analytical `noise'.

Item Type:Journal article
Keywords:acute and chronic phosphorus transfers; high-resolution monitoring; catchments
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Environmental Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Freshwater Sciences
ID Code:18278
Deposited By:Professor Philip Jordan
Deposited On:10 May 2011 12:00
Last Modified:10 May 2011 12:00

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