Influence of Naturally High Fine Sediment Loads on Aquatic Insect Larvae in a Montane River.
Sedimentation of fines associated with human activity is an important source of ecological impoverishment in rivers. However, there is a paucity of information on whether fine sediment associated with natural processes results in similar impairment. We assessed the effect of fine sediment on the tax...
| Publicado en: | Scottish Geographical Journal Vol. 127; no. 4; pp. 315 - 335 |
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| Autores principales: | , , , , |
| Formato: | Artículo |
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Taylor & Francis Ltd
Dec2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=73929329&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 73929329 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 14702541 8NB jtl: Scottish Geographical Journal issn: 14702541 maglogo: N pubinfo: dt: Dec2011 vid: 127 iid: 4 pid: 377 pub: Taylor & Francis Ltd artinfo: ui: 73929329 10.1080/14702541.2012.670006 ppf: 315 ppct: 20 formats: fmt: – @attributes: type: T – @attributes: type: P size: 856KB tig: atl: Influence of Naturally High Fine Sediment Loads on Aquatic Insect Larvae in a Montane River. aug: au: Buendia, Cristina Gibbins, ChrisN. Vericat, Damia Lopez-Tarazon, JoseA. Batalla, RamonJ. affil: Northern Rivers Institute, School of Geosciences, University of Aberdeen, Aberdeen, UK RIUS, Department of Environment and Soil Sciences, University of Lleida, Lleida, Spain Forest and Technology Centre of Catalonia, Solsona, Spain Institute of Geography and Earth Sciences, Aberystwyth, UK su: Sediments Aquatic insects Larvae Sedimentation & deposition Rivers Classification of insects sug: subj: Sediments Aquatic insects Larvae Sedimentation & deposition Rivers Classification of insects keyword: benthic aquatic insects EPT abundance fine sediment unmodified Pyrenean river ab: Sedimentation of fines associated with human activity is an important source of ecological impoverishment in rivers. However, there is a paucity of information on whether fine sediment associated with natural processes results in similar impairment. We assessed the effect of fine sediment on the taxonomic composition and abundance of insect larvae in a river which receives high inputs as a result of naturally erodible badland areas. An adjacent subcatchment, which does not experience high sediment inputs but is otherwise similar, was used as a reference. There were marked differences in insect density and taxon richness between the two subcatchments. The abundance of a number of insect taxa decreased as the proportion of bed material comprising fines increased. A similar decrease was observed in the EPT metric. Fine sediment exerted a dominant and homogenizing influence on community structure in the patches of streambed where it occurred in high concentrations. Between 24 and 36% of the overall variability in community structure could be explained by sedimentary conditions. In locations where when fine sediment content was limited, other habitat variables influenced insect community structure, with patch assemblages generally more diverse and heterogeneous. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y custom: Copyright of Scottish Geographical Journal is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. item: Scottish Geographical Journal holder: Taylor & Francis Ltd dt: @attributes: year: 2011 holdings: @attributes: islocal: N |
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