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Native generalist herbivores promote invasion of a chemically defended seaweed via refuge-mediated apparent competition
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- Enge, Swantje, 1981 (author)
- Gothenburg University,Göteborgs universitet,Linnécentrum för marin evolutionsbiologi (CEMEB),Centrum för marin kemisk ekologi,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Linnaeus Centre for Marine Evolutionary Biology (CEMEB),Centre for Marine Chemical Ecology,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
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- Nylund, Göran M., 1974 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Linnécentrum för marin evolutionsbiologi (CEMEB),Centrum för marin kemisk ekologi,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory,Linnaeus Centre for Marine Evolutionary Biology (CEMEB),Centre for Marine Chemical Ecology
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- Pavia, Henrik, 1964 (author)
- Gothenburg University,Göteborgs universitet,Linnécentrum för marin evolutionsbiologi (CEMEB),Centrum för marin kemisk ekologi,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Linnaeus Centre for Marine Evolutionary Biology (CEMEB),Centre for Marine Chemical Ecology,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
- (creator_code:org_t)
- 2013
- 2013
- English.
- In: Ecology Letters. - 1461-023X .- 1461-0248. ; 16:4, s. 487-492
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Refuge-mediated apparent competition was recently suggested as a mechanism that enables plant invasions. The refuge characteristics of introduced plants are predicted to enhance impacts of generalist herbivores on native competitors and thereby result in an increased abundance of the invader. However, this prediction has so far not been experimentally verified. This study tested if the invasion of a chemically defended seaweed is promoted by native generalist herbivores via refuge-mediated apparent competition. The invader was shown to offer herbivores a significantly better refuge against fish predation compared with native seaweeds. Furthermore, in an experimental community, the presence of herbivores decreased the performance of neighbouring native seaweeds, but increased growth and relative abundance of the invader. These results provides the first experimental evidence that native generalist herbivores can shift a community towards a dominance of a well-defended invader, inferior to native species in direct competitive interactions, by means of refuge-mediated apparent competition.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Apparent competition; Bonnemaisonia hamifera ; chemical defence; fish; generalist herbivores; invasive algae; marine environment; plant invasion; plant–herbivore interactions; refuge-mediated
Publication and Content Type
- ref (subject category)
- art (subject category)
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- University of Gothenburg
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