Document Detail

Table scraps: inter-trophic food provisioning by pumas.
MedLine Citation:
PMID:  22696284     Owner:  NLM     Status:  MEDLINE    
Large carnivores perform keystone ecological functions through direct predation, or indirectly, through food subsidies to scavengers or trophic cascades driven by their influence on the distributions of their prey. Pumas (Puma concolor) are an elusive, cryptic species difficult to study and little is known about their inter-trophic-level interactions in natural communities. Using new GPS technology, we discovered that pumas in Patagonia provided 232 ± 31 kg of edible meat/month/100 km(2) to near-threatened Andean condors (Vultur gryphus) and other members of a diverse scavenger community. This is up to 3.1 times the contributions by wolves (Canis lupus) to communities in Yellowstone National Park, USA, and highlights the keystone role large, solitary felids play in natural systems. These findings are more pertinent than ever, for managers increasingly advocate controlling pumas and other large felids to bolster prey populations and mitigate concerns over human and livestock safety, without a full understanding of the potential ecological consequences of their actions.
L Mark Elbroch; Heiko U Wittmer
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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.     Date:  2012-06-13
Journal Detail:
Title:  Biology letters     Volume:  8     ISSN:  1744-957X     ISO Abbreviation:  Biol. Lett.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-09-12     Completed Date:  2013-02-11     Revised Date:  2014-03-25    
Medline Journal Info:
Nlm Unique ID:  101247722     Medline TA:  Biol Lett     Country:  England    
Other Details:
Languages:  eng     Pagination:  776-9     Citation Subset:  IM    
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MeSH Terms
Behavior, Animal
Conservation of Natural Resources
Environmental Monitoring / methods
Feeding Behavior
Geographic Information Systems
Predatory Behavior*
Species Specificity
Time Factors
Wolves / physiology

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

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