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  • Version 1 of 1


Hampshire Avon DTC Deposited Fine-grained Sediment Monitoring Dataset 2010-2013

Related Party - Individual (Principal Investigator): Doctor Iwan Jones* (Queen Mary University of London) Email address:
Related Party - Organisation (Funder): Defra
In conjunction with the hydrological and water quality monitoring, a monitoring regime was designed to detect how freshwater ecology responds to changes in agricultural diffuse pollutants. The data gathered have been used to confirm the WFD ecological status of the study sub-catchments, to explore spatial and temporal variability in biological quality elements, and to identify those pollutants that are most likely to be causing failure to achieve Good ecological status. This background data provides an evidence base to both inform, and assess the impact of, mitigation measures. Invertebrates, diatoms and macrophytes were monitored in each subcatchment and WFD tools have been used to establish the status of these Biological Quality Elements (BQE). The biological monitoring sites are closely matched to the hydrological and water quality monitoring stations, which will allow observed change in the BQEs to be linked to reductions in diffuse pollution and on-farm diffuse pollution mitigation measures. We also monitored variation in the quantity of deposited fine-grained sediment in the stream bed over the same period. The data being made available here are reach-averaged masses of fine-grained sediment in the stream bed at each of the 11 Avon & Tamar DTC sites as measured using the disturbance technique (Duerdoth et al., 2015; see Hampshire Avon DTC Ecological Monitoring metadata).

Subject Keywords: RiversStreamsSedimentationSediment samplingWater Framework DirectiveDiffuse pollution
Geographic Keywords: Hampshire Avon catchmentTamar catchment
Phenomenon Time -  Start Date/Time: 2010-09-01 00:00:00 End Date/Time:  2013-12-31 00:00:00

Geographic Extent -
    Longitude (West): -4.542589
    Longitude (East): -1.991100
    Latitude (South): 50.670085
    Latitude (North): 51.135872

Data Quality Statement:
All samples were collected and processed according to the protocols set out in Duerdoth et al. (2015) Assessment of a rapid method for quantitative reach-scale estimates of deposited fine sediment in rivers. Geomorphology 230 (2015) 37–50 doi:10.1016/j.geomorph.2014.11.003
Protocol: This document describes a rapid and cost-effective methodology that gives precise estimates of deposited sediment across all river types and that are relevant to morphological and ecological impact.
Publication Date: 

* To discuss any issues relating to this dataset please either send an email to Doctor Iwan Jones or post to our forum

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Rights Statement

This data is published under the licence FBA Licence

Attribution: Hants Avon DTC consortium

Citation of this data should be as follows:
Hants Avon DTC consortium (2016): Hampshire Avon DTC Deposited Fine-grained Sediment Monitoring Dataset 2010-2013. Version:1. [dataset] Freshwater Biological Association [publisher]. doi:10.17865/dtcavon193

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