Stream ecosystem functioning in an agricultural landscape: the importance of terrestrial-aquatic linkages

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Stream ecosystem functioning in an agricultural landscape : the importance of terrestrial-aquatic linkages

Hladyz, Sally (författare): University College Cork

Åbjörnsson, Kajsa (författare): Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Division aquatic ecology,Department of Biology,Faculty of Science,University College Cork

Chauvet, Eric (författare): Université Paul Sabatier Toulouse III

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Dobson, Michael (författare): Manchester Metropolitan University

Elosegi, Arturo (författare): University of the Basque Country

Ferreira, Verónica (författare): University of Coimbra

Fleituch, Tadeusz (författare): Polish Academy of Sciences

Gessner, Mark O. (författare): Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum

Giller, Paul S. (författare): University College Cork

Gulis, Vladislav (författare): University of Coimbra

Hutton, Stephen. A. (författare): University College Cork

Lacoursière, Jean O. (författare): Akvatisk biologi och kemi

Lamothe, Sylvain (författare): Université Paul Sabatier Toulouse III

Lecerf, Antoine (författare): Université Paul Sabatier Toulouse III

Malmqvist, Björn (författare): Umeå universitet,Institutionen för ekologi, miljö och geovetenskap

McKie, Brendan G. (författare): Umeå universitet,Institutionen för ekologi, miljö och geovetenskap

Nistorescu, Marius (författare): University of Bucharest

Preda, Elena (författare): University of Bucharest

Riipinen, Miira P. (författare): Manchester Metropolitan University

Risnoveanu, Geta (författare): University of Bucharest

Schindler, Markus (författare): Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum

Tiegs, Scott D. (författare): Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum,Swiss Federal Institute of Aquatic Science and Technology, Kastanienbaum

Vought, Lena B. M. (författare): Akvatisk biologi och kemi

Woodward, Guy (författare): University College Cork

Woodward, Guy (creator_code:editor_t)

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(creator_code:org_t)

ISBN 9780123747945
San Diego : Academic Press, 2011
2011
Engelska 65
Ingår i: Ecosystems in a human-modified landscape. - San Diego : Academic Press. - 9780123747945 ; 44, s. 211-276

Relaterad länk:: http://dx.doi.org/10...; visa fler...; https://doi.org/10.1...; https://lup.lub.lu.s...; https://urn.kb.se/re...; visa färre...

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The loss of native riparian vegetation and its replacement with non-native species or grazing land for agriculture is a worldwide phenomenon, but one that is prevalent in Europe, reflecting the heavily-modified nature of the continent's landscape. The consequences of these riparian alterations for freshwater ecosystems remain largely unknown, largely because bioassessment has traditionally focused on the impacts of organic pollution on community structure. We addressed the need for a broader perspective, which encompasses changes at the catchment scale, by comparing ecosystem processes in woodland reference sites with those with altered riparian zones. We assessed a range of riparian modifications, including clearance for pasture and replacement of woodland with a range of low diversity plantations, in 100 streams to obtain a continental-scale perspective of the major types of alterations across Europe. Subsequently, we focused on pasture streams, as an especially prevalent widespread riparian alteration, by characterising their structural (e.g. invertebrate and fish communities) and functional (e.g. litter decomposition, algal production, herbivory) attributes in a country (Ireland) dominated by this type of landscape modification, via field and laboratory experiments. We found that microbes became increasingly important as agents of decomposition relative to macrofauna (invertebrates) in impacted sites in general and in pasture streams in particular. Resource quality of grass litter (e.g., carbon : nutrient ratios, lignin and cellulose content) was a key driver of decomposition rates in pasture streams. These systems also relied more heavily on autochthonous algal production than was the case in woodland streams, which were more detrital based. These findings suggest that these pasture streams might be fundamentally different from their native, ancestral woodland state, with a shift towards greater reliance on autochthonous-based processes. This could have a destabilizing effect on the dynamics of the food web relative to the slower, detrital-based pathways that dominate in woodland streams.

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NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Ekologi

Artiklar i publikationen: Ecosystems in a ...; Advances in Ecol ...

Av lärosätet: Högskolan Kristianstad; Lunds universitet; Umeå universitet

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Stream ecosystem functioning in an agricultural landscape : the importance of terrestrial-aquatic linkages

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