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Interaction between macroinvertebrates, discharge and physical habitat in upland rivers

2010; Wiley; Volume: 20; Issue: S1 Linguagem: Inglês

10.1002/aqc.1089

1099-0755

Michael J. Dunbar, Mark Warren, Chris Extence, Lucy Baker, Dan Cadman, D. J. Mould, Juliette Hall, Richard Chadd,

Fish Ecology and Management Studies

Aquatic Conservation: Marine and Freshwater EcosystemsVolume 20, Issue S1 p. S31-S44 Research Article Interaction between macroinvertebrates, discharge and physical habitat in upland rivers Michael J. Dunbar, Corresponding Author Michael J. Dunbar [email protected] Centre for Ecology and Hydrology (CEH), Wallingford, Oxon, OX10 8BB, UKCentre for Ecology and Hydrology, Crowmarsh Gifford, Wallingford, Oxon, OX10 8BB, UKSearch for more papers by this authorMark Warren, Mark Warren Environment Agency, Tewkesbury, UKSearch for more papers by this authorChris Extence, Chris Extence Environment Agency, Spalding, UKSearch for more papers by this authorLucy Baker, Lucy Baker Environment Agency, Warrington, UKSearch for more papers by this authorDan Cadman, Dan Cadman Independent Consultant, Sheffield, UKSearch for more papers by this authorDavid J. Mould, David J. Mould Wallingford Hydro Solutions (WHS), Wallingford, Oxon, OX10 8BB, UKSearch for more papers by this authorJuliette Hall, Juliette Hall Environment Agency, Bristol, UKSearch for more papers by this authorRichard Chadd, Richard Chadd Environment Agency, Spalding, UKSearch for more papers by this author Michael J. Dunbar, Corresponding Author Michael J. Dunbar [email protected] Centre for Ecology and Hydrology (CEH), Wallingford, Oxon, OX10 8BB, UKCentre for Ecology and Hydrology, Crowmarsh Gifford, Wallingford, Oxon, OX10 8BB, UKSearch for more papers by this authorMark Warren, Mark Warren Environment Agency, Tewkesbury, UKSearch for more papers by this authorChris Extence, Chris Extence Environment Agency, Spalding, UKSearch for more papers by this authorLucy Baker, Lucy Baker Environment Agency, Warrington, UKSearch for more papers by this authorDan Cadman, Dan Cadman Independent Consultant, Sheffield, UKSearch for more papers by this authorDavid J. Mould, David J. Mould Wallingford Hydro Solutions (WHS), Wallingford, Oxon, OX10 8BB, UKSearch for more papers by this authorJuliette Hall, Juliette Hall Environment Agency, Bristol, UKSearch for more papers by this authorRichard Chadd, Richard Chadd Environment Agency, Spalding, UKSearch for more papers by this author First published: 28 April 2010 https://doi.org/10.1002/aqc.1089Citations: 63AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract 1. There is a need to relate changing river flows to ecological response, particularly using methods which do not require extensive new data for water bodies without historical data. This paper describes how local-scale habitat features and changing discharge appear to influence a macroinvertebrate-based biotic index. 2. The study used 87 time-series of river biomonitoring data from upland, wadeable streams with quasi-natural flow regimes across England and Wales. Twenty-seven of the sites were matched to a nearby flow gauging station, and historical, natural flows using a generalized rainfall-runoff model were synthesized for 60 sites. All sites were matched to a River Habitat Survey (RHS) within 1 km. 3. The data were analysed using multilevel linear regression, combining sample- and site-level characteristics as predictors. Common responses were assessed across sites, using the biotic index LIFE (Lotic Invertebrate index for Flow Evaluation), an average of abundance-weighted Flow Groups which indicate the relative preference among taxa for higher velocities with gravel/cobble substrates or slow velocities with finer substrates. The aim was to understand the influence of physical habitat on macroinvertebrate response to antecedent high and low flow magnitude. 4. There was a positive relationship between LIFE score calculated from spring and autumn samples and antecedent high (Q10) and low flows (Q95). The relationship between summer Q10 and autumn LIFE score was steeper than the relationship between winter Q10 and spring LIFE score. Bed and bank resectioning reduced overall LIFE and increased the steepness of the response of LIFE to low (Q95) flow. 5. The models derived may be used to guide environmental flow allocations and to quantify the relative influence of flow and physical habitat change on macroinvertebrate responses. The interaction between resectioning and low flow has particular implications for the conservation of macroinvertebrate taxa with requirements for faster flowing water. Copyright © 2010 John Wiley & Sons, Ltd. Citing Literature Volume20, IssueS1Supplement: Recent Developments in Classification, Assessment and Management Strategies for Freshwater Habitats in Britain and EuropeMay 2010Pages S31-S44 RelatedInformation