Publication Date:
2005-07-05
Description:
Habitat fragmentation threatens biodiversity by disrupting dispersal. The mechanisms and consequences of this disruption are controversial, primarily because most organisms are difficult to track. We examined the effect of habitat corridors on long-distance dispersal of seeds by birds, and tested whether small-scale (〈20 meters) movements of birds could be scaled up to predict dispersal of seeds across hundreds of meters in eight experimentally fragmented landscapes. A simulation model accurately predicted the observed pattern of seed rain and revealed that corridors functioned through edge-following behavior of birds. Our study shows how models based on easily observed behaviors can be scaled up to predict landscape-level processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Levey, Douglas J -- Bolker, Benjamin M -- Tewksbury, Joshua J -- Sargent, Sarah -- Haddad, Nick M -- New York, N.Y. -- Science. 2005 Jul 1;309(5731):146-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Florida, Post Office Box 118525, Gainesville, FL 32611-8525, USA. dlevey@zoo.ufl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15994561" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
*Behavior, Animal
;
Computer Simulation
;
Conservation of Natural Resources
;
Defecation
;
*Ecosystem
;
*Environment
;
*Flight, Animal
;
Models, Biological
;
Myrica
;
Passeriformes/*physiology
;
Pinus
;
*Seeds
;
South Carolina
;
Trees
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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