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Shifts in the Diversity and Composition of Consumer Traits Constrain the Effects of Land Use on Stream Ecosystem Functioning
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2015 (English)In: Advances in ecological research, vol 52: trait-based ecology - from structure to function / [ed] Pawar, S Woodward, G Dell, AI, Elsevier, 2015, p. 169-200Chapter in book (Refereed)
Abstract [en]

Species functional traits provide an important conceptual link between the effects of disturbances on community composition and diversity, and their ultimate outcomes for ecosystem functioning. Across 10 boreal streams covering a gradient of increasing intensity of land-use management, from forested to agricultural sites, we analysed relationships between leaf decomposition, the feeding traits of detritivores and measures of anthropogenic disturbances in two seasons. The direct effect of increasing land-use intensity on decomposition was positive and was associated with increases in nutrient concentrations and current velocities. However, this relationship was countered by negative effects associated with a loss of detritivore functional diversity along the gradient during autumn and shifts in species trait composition during spring, limiting the net change in functioning associated with increasing land-use management overall. Our results highlight the key roles that trait identity and diversity can play in mediating the effects of human disturbance on ecosystem functioning.

Place, publisher, year, edition, pages
Elsevier, 2015. p. 169-200
Series
Advances in Ecological Research, ISSN 0065-2504 ; 52
National Category
Ecology
Identifiers
URN: urn:nbn:se:umu:diva-152164DOI: 10.1016/bs.aecr.2015.03.002ISI: 000432516300007ISBN: 978-0-12-802445-4 (print)OAI: oai:DiVA.org:umu-152164DiVA, id: diva2:1252168
Available from: 2018-10-01 Created: 2018-10-01 Last updated: 2018-10-01Bibliographically approved

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Frainer, AndréMcKie, Brendan G.

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CiteExportLink to record
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