Document Detail


Promotion of ecosystem carbon sequestration by invasive predators.
MedLine Citation:
PMID:  17650479     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Despite recent interest in understanding the effects of human-induced global change on carbon (C) storage in terrestrial ecosystems, most studies have overlooked the influence of a major element of global change, namely biological invasions. We quantified ecosystem C storage, both above- and below-ground, on each of 18 islands off the coast of New Zealand. Some islands support high densities of nesting seabirds, while others have been invaded by predatory rats and host few seabirds. Our results show that, by preying upon seabirds, rats have indirectly enhanced C sequestration in live plant biomass by 104%, reduced C sequestration in non-living pools by 26% and increased total ecosystem C storage by 37%. Given the current worldwide distribution of rats and other invasive predatory mammals, and the consequent disappearance of seabird colonies, these predators may be important determinants of ecosystem C sequestration.
Authors:
David A Wardle; Peter J Bellingham; Tadashi Fukami; Christa P H Mulder
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Biology letters     Volume:  3     ISSN:  1744-9561     ISO Abbreviation:  Biol. Lett.     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-08-31     Completed Date:  2007-10-30     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  101247722     Medline TA:  Biol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  479-82     Citation Subset:  IM    
Affiliation:
Landcare Research, PO Box 40, Lincoln 7640, New Zealand. david.wardle@svek.slu.se
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MeSH Terms
Descriptor/Qualifier:
Animals
Biomass
Birds / physiology*
Carbon / metabolism*
Ecosystem*
Plants / metabolism
Predatory Behavior*
Rats
Chemical
Reg. No./Substance:
7440-44-0/Carbon
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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