Document Detail


Climate change impacts in multispecies systems: drought alters food web size structure in a field experiment.
MedLine Citation:
PMID:  23007087     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Experimental data from intergenerational field manipulations of entire food webs are scarce, yet such approaches are essential for gauging impacts of environmental change in natural systems. We imposed 2 years of intermittent drought on stream channels in a replicated field trial, to measure food web responses to simulated climate change. Drought triggered widespread losses of species and links, with larger taxa and those that were rare for their size, many of which were predatory, being especially vulnerable. Many network properties, including size-scaling relationships within food chains, changed in response to drought. Other properties, such as connectance, were unaffected. These findings highlight the need for detailed experimental data from different organizational levels, from pairwise links to the entire food web. The loss of not only large species, but also those that were rare for their size, provides a newly refined way to gauge likely impacts that may be applied more generally to other systems and/or impacts.
Authors:
Guy Woodward; Lee E Brown; Francois K Edwards; Lawrence N Hudson; Alexander M Milner; Daniel C Reuman; Mark E Ledger
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Philosophical transactions of the Royal Society of London. Series B, Biological sciences     Volume:  367     ISSN:  1471-2970     ISO Abbreviation:  Philos. Trans. R. Soc. Lond., B, Biol. Sci.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-09-25     Completed Date:  2013-04-03     Revised Date:  2013-11-06    
Medline Journal Info:
Nlm Unique ID:  7503623     Medline TA:  Philos Trans R Soc Lond B Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  2990-7     Citation Subset:  IM    
Affiliation:
School of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK. g.woodward@qmul.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Animals
Biomass
Body Size
Body Weight*
Climate Change*
Computational Biology / methods
Computer Simulation
Droughts
Food Chain*
Logistic Models
Population Density
Population Dynamics
Predatory Behavior
Comments/Corrections

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


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