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Strong invaders are strong defenders : implications for the resistance of invaded communities
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- Henriksson, Anna (author)
- Umeå universitet,Institutionen för ekologi, miljö och geovetenskap
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- Wardle, David (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skogens ekologi och skötsel,Department of Forest Ecology and Management
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- Trygg, Johan (author)
- Umeå universitet,Kemiska institutionen
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- (creator_code:org_t)
- 2016-03-07
- 2016
- English.
- In: Ecology Letters. - : Wiley. - 1461-023X .- 1461-0248. ; 19:4, s. 487-494
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Many ecosystems receive a steady stream of non-native species. How biotic resistance develops over time in these ecosystems will depend on how established invaders contribute to subsequent resistance. If invasion success and defence capacity (i.e. contribution to resistance) are correlated, then community resistance should increase as species accumulate. If successful invaders also cause most impact (through replacing native species with low defence capacity) then the effect will be even stronger. If successful invaders instead have weak defence capacity or even facilitative attributes, then resistance should decrease with time, as proposed by the invasional meltdown hypothesis. We analysed 1157 introductions of freshwater fish in Swedish lakes and found that species' invasion success was positively correlated with their defence capacity and impact, suggesting that these communities will develop stronger resistance over time. These insights can be used to identify scenarios where invading species are expected to cause large impact.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Skogsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Forest Science (hsv//eng)
Keyword
- biotic resistance
- freshwater fish
- introductions
- interaction hierarchies
- strong invaders
- strong defenders
- invasions
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Henriksson, Anna
- Wardle, David
- Trygg, Johan
- Diehl, Sebastian
- Englund, Göran
- About the subject
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- NATURAL SCIENCES
- NATURAL SCIENCES
- and Biological Scien ...
- and Ecology
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- AGRICULTURAL SCI ...
- and Agriculture Fore ...
- and Forest Science
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- Ecology Letters
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- Umeå University
- Swedish University of Agricultural Sciences
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