Assessing "modern background sediment delivery to rivers" across England and Wales and its use for catchment management

Collins, Adrian L.; Foster, Ian; Zhang, Yusheng; Gooday, Richard; Lee, David; Sear, David; Naden, Pamela; Jones, Iwan. 2012 Assessing "modern background sediment delivery to rivers" across England and Wales and its use for catchment management. In: Collins, Adrian L.; Golosov, Valentin; Horowitz, Arthur J.; Lu, Xixi; Stone, Mike; Walling, Des E.; Zhang, Xinbao, (eds.) Erosion and sediment yields in the changing environment. Wallingford, UK, International Association of Hydrological Sciences, 125-131. (IAHS Publication, 356).

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Catchment sediment management across England and Wales continues to require alternative criteria to the existing guideline standard (an annual mean suspended sediment concentration of 25 mg L-1) provided by the European Union Freshwater Fish Directive. In response, a recent collaborative science project has investigated the scope for developing alternative catchment-specific sediment targets using an integrated modelling toolkit coupling sediment pressures from agriculture and impacts on aquatic biota, including fish and macroinvertebrates. Part of this work involved using palaeolimnological reconstruction to quantify “modern background sediment delivery to rivers” (MBSDR) across England and Wales, prior to recent agricultural intensification. It is proposed that the estimates of MBSDR can be used to assess the maximum ceiling of mitigation because no management strategy should aim to control background sediment loss arising from natural physiographic and hydrological drivers, and to correct the gap between past, present or future projected sediment pressures on watercourses and “good ecological status” for sediment.

Item Type: Publication - Book Section
Programmes: CEH Topics & Objectives 2009 - 2012 > Water > WA Topic 2 - Ecohydrological Processes > WA - 2.2 - Integrate the effect of urban and rural land use on the ecohydrological functioning of a landscape mosaic
CEH Sections/Science Areas: Acreman
ISBN: 9781907161339
Additional Keywords: sediment delivery, palaeolimnology, modelling, management, policy
NORA Subject Terms: Ecology and Environment
Related URLs:
Date made live: 18 Dec 2012 12:00 +0 (UTC)

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