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Early onset of seco...
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Borrvall, CharlotteLinköpings universitet,Teoretisk Biologi,Tekniska högskolan
(författare)
Early onset of secondary extinctions in ecological communities following the loss of top predators
- Artikel/kapitelEngelska2006
Förlag, utgivningsår, omfång ...
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2006-03-03
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Wiley,2006
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:liu-13857
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-13857URI
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https://doi.org/10.1111/j.1461-0248.2006.00893.xDOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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The large vulnerability of top predators to human-induced disturbances on ecosystems is a matter of growing concern. Because top predators often exert strong influence on their prey populations their extinction can have far-reaching consequences for the structure and functioning of ecosystems. It has, for example, been observed that the local loss of a predator can trigger a cascade of secondary extinctions. However, the time lags involved in such secondary extinctions remain unexplored. Here we show that the loss of a top predator leads to a significantly earlier onset of secondary extinctions in model communities than does the loss of a species from other trophic levels. Moreover, in most cases time to secondary extinction increases with increasing species richness. If local secondary extinctions occur early they are less likely to be balanced by immigration of species from local communities nearby. The implications of these results for community persistence and conservation priorities are discussed.
Ämnesord och genrebeteckningar
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Ecological community
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food web
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relaxation time
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secondary extinction
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species interactions
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species loss
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species richness
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top predators
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trophic level
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NATURAL SCIENCES
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NATURVETENSKAP
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Ebenman, BoLinköpings universitet,Teoretisk Biologi,Tekniska högskolan(Swepub:liu)boeb20
(författare)
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Linköpings universitetTeoretisk Biologi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Ecology Letters: Wiley9:4, s. 435-4421461-023X1461-0248
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