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Terrestrial organic...
Terrestrial organic matter input suppresses biomass production in lake ecosystems
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- Karlsson, Jan (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Climate Impacts Research Centre (CIRC) ; Arcum
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- Bergström, Ann-Kristin (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum
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- Byström, Pär (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum
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- Gudasz, Cristian (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Arcum
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Rodriguez, Patricia (author)
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- Hein, Catherine (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap,Climate Impacts Research Centre (CIRC)
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(creator_code:org_t)
- Ecological Society of America, 2015
- 2015
- English.
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In: Ecology. - : Ecological Society of America. - 0012-9658 .- 1939-9170. ; 96:11, s. 2870-2876
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Terrestrial ecosystems export large amounts of organic carbon (t-OC) but the net effect of this OC on the productivity of recipient aquatic ecosystems is largely unknown. In this study of boreal lakes, we show that the relative contribution of t-OC to individual top consumer (fish) biomass production, and to most of their potential prey organisms, increased with the concentration of dissolved organic carbon (DOC; dominated by t-OC sources) in water. However, the biomass and production of top consumers decreased with increasing concentration of DOC, despite their substantial use (up to 60%) of t-OC. Thus, the results suggest that although t-OC supports individual consumer growth in lakes to a large extent, t-OC input suppresses rather than subsidizes population biomass production.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Oceanografi, hydrologi och vattenresurser (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Oceanography, Hydrology and Water Resources (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- allochthonous organic matter
- boreal lakes
- lake ecosystem
- productivity
- subsidy
- terrestrial organic rbon
- t-OC
- Umea
- Sweden
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- art (subject category)
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