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Reciprocal subsidie...
Reciprocal subsidies between freshwater and terrestrial ecosystems structure consumer resource dynamics
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- Bartels, Pia (author)
- Uppsala universitet,Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Limnologi
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Cucherousset, Julien (author)
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- Steger, Kristin (author)
- Uppsala universitet,Limnologi
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- Eklöv, Peter (author)
- Uppsala universitet,Limnologi
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- Tranvik, Lars J. (author)
- Uppsala universitet,Limnologi
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Hillebrand, Helmut (author)
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(creator_code:org_t)
- Wiley, 2012
- 2012
- English.
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In: Ecology. - : Wiley. - 0012-9658 .- 1939-9170. ; 93:5, s. 1173-1182
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Cross-ecosystem movements of material and energy, particularly reciprocal resource fluxes across the freshwater-land interface, have received major attention. Freshwater ecosystems may receive higher amounts of subsidies (i.e., resources produced outside the focal ecosystem) than terrestrial ecosystems, potentially leading to increased secondary production in freshwaters. Here we used a meta-analytic approach to quantify the magnitude and direction of subsidy inputs across the freshwater-land interface and to determine subsequent responses in recipient animals. Terrestrial and freshwater ecosystems differed in the magnitude of subsidies they received, with aquatic ecosystems generally receiving higher subsidies than terrestrial ecosystems. Surprisingly, and despite the large discrepancy in magnitude, the contribution of these subsidies to animal carbon inferred from stable isotope composition did not differ between freshwater and terrestrial ecosystems, likely due to the differences in subsidy quality. The contribution of allochthonous subsidies was highest to primary consumers and predators, suggesting that bottom-up and top-down effects may be affected considerably by the input of allochthonous resources. Future work on subsidies will profit from a food web dynamic approach including indirect trophic interactions and propagating effects.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- allochthonous
- autochthonous
- bottom-up
- cross-ecosystem
- food web dynamics
- resource subsidy
- top-down
Publication and Content Type
- ref (subject category)
- art (subject category)
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