Document Detail


Experimental warming transforms multiple predator effects in a grassland food web.
MedLine Citation:
PMID:  19780788     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This experimental study tests new theory for multiple predator effects on communities by using warming to alter predator habitat use and hence direct and indirect interactions in a grassland food web containing two dominant spider predator species, a dominant grasshopper herbivore and grass and herb plants. Experimental warming further offers insight into how climate change might alter direct and indirect effects. Under ambient environmental conditions, spiders used habitat in spatially complementary locations. Consistent with predictions, the multiple predator effect on grasshoppers and on plants was the average of the individual predator effects. Warming strengthened the single predator effects. It also caused the spider species to overlap lower in the vegetation canopy. Consistent with predictions, the system was transformed into an intraguild predation system with the consequent extinction of one spider species. The results portend climate caused loss of predator diversity with important consequences for food web structure and function.
Authors:
Brandon T Barton; Oswald J Schmitz
Related Documents :
18805808 - Fluid dynamics of feeding behaviour in white-spotted bamboo sharks.
9925618 - Changes in bacterial and eukaryotic community structure after mass lysis of filamentous...
20558708 - How do polar marine ecosystems respond to rapid climate change?
15921048 - Birds of prey as limiting factors of gamebird populations in europe: a review.
9478028 - Toxicity considerations when revising the nordic nutrition recommendations.
24844778 - The relationship between food literacy and dietary intake in adolescents: a systematic ...
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2009-09-23
Journal Detail:
Title:  Ecology letters     Volume:  12     ISSN:  1461-0248     ISO Abbreviation:  Ecol. Lett.     Publication Date:  2009 Dec 
Date Detail:
Created Date:  2009-11-25     Completed Date:  2010-02-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101121949     Medline TA:  Ecol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  1317-25     Citation Subset:  IM    
Affiliation:
School of Forestry and Environmental Studies, Yale University, 370 Prospect St., New Haven, CT 06511, USA. brandon.barton@yale.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Climate Change*
Connecticut
Food Chain*
Grasshoppers*
Hot Temperature
Poaceae
Population Density
Predatory Behavior*
Spiders*

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


Previous Document:  The evolution of intermediate castration virulence and ant coexistence in a spatially structured env...
Next Document:  Predatory senescence in ageing wolves.