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  • American Association for the Advancement of Science (AAAS)  (2)
  • American Society of Hematology
  • Oxford University Press
  • 2010-2014  (2)
  • 1
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    Effects of experimental seaweed deposition on lizard and ant predation in an island food web (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-01-29
    Description: The effect of environmental change on ecosystems is mediated by species interactions. Environmental change may remove or add species and shift life-history events, altering which species interact at a given time. However, environmental change may also reconfigure multispecies interactions when both species composition and phenology remain intact. In a Caribbean island system, a major manifestation of environmental change is seaweed deposition, which has been linked to eutrophication, overfishing, and hurricanes. Here, we show in a whole-island field experiment that without seaweed two predators--lizards and ants--had a substantially greater-than-additive effect on herbivory. When seaweed was added to mimic deposition by hurricanes, no interactive predator effect occurred. Thus environmental change can substantially restructure food-web interactions, complicating efforts to predict anthropogenic changes in ecosystem processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Piovia-Scott, Jonah -- Spiller, David A -- Schoener, Thomas W -- New York, N.Y. -- Science. 2011 Jan 28;331(6016):461-3. doi: 10.1126/science.1200282.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Evolution and Ecology and Center for Population Biology, One Shields Avenue, University of California Davis, Davis, CA 95616-8755, USA. jpioviascott@ucdavis.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21273487" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Ants ; *Arthropods ; Bahamas ; Ecosystem ; Feeding Behavior ; *Food Chain ; Geography ; *Lizards ; *Plants ; *Predatory Behavior ; Seasons ; *Seaweed
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Founder effects persist despite adaptive differentiation: a field experiment with lizards (2012)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2012-02-04
    Description: The extent to which random processes such as founder events contribute to evolutionary divergence is a long-standing controversy in evolutionary biology. To determine the respective contributions of founder effects and natural selection, we conducted an experiment in which brown anole (Anolis sagrei) lizard populations were established on seven small islands in the Bahamas, from male-female pairs randomly drawn from the same large-island source. These founding events generated significant among-island genetic and morphological differences that persisted throughout the course of the experiment despite all populations adapting in the predicted direction-shorter hindlimbs-in response to the narrower vegetation on the small islands. Thus, using a replicated experiment in nature, we showed that both founder effects and natural selection jointly determine trait values in these populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kolbe, Jason J -- Leal, Manuel -- Schoener, Thomas W -- Spiller, David A -- Losos, Jonathan B -- New York, N.Y. -- Science. 2012 Mar 2;335(6072):1086-9. doi: 10.1126/science.1209566. Epub 2012 Feb 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA. jjkolbe@gmail.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22300849" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Biological ; Animals ; Bahamas ; *Biological Evolution ; *Ecosystem ; Female ; *Founder Effect ; Genetic Variation ; Genotype ; Hindlimb/anatomy & histology ; Introduced Species ; Lizards/*anatomy & histology/*genetics ; Male ; Microsatellite Repeats ; Phenotype ; Population Density ; *Selection, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
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