Competition among Penguins and Cetaceans Reveals Trophic Cascades in the Western Ross Sea, Antarctica资料.pdf

Competition among Penguins and Cetaceans Reveals Trophic Cascades in the Western Ross Sea, Antarctica Author(s): David G. Ainley, Grant Ballard, Katie M. Dugger Source: Ecology, Vol. 87, No. 8 (Aug., 2006), pp. 2080-2093 Published by: Ecological Society of America Stable URL: /stable. Accessed: 27/12/2010 20:21 Your use of the JSTOR archive indicates your acceptance of JSTORs Terms and Conditions of Use, available at . /page/info/about/policies/terms.jsp. JSTORs Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Please contact the publisher regarding any further use of this work. Publisher contact information may be obtained at . /action/showPublisher?publisherCode=esa. . Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission. JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@. Ecological Society of America is collaborating with JSTOR to digitize, preserve and extend access to Ecology. Ecology, 87(8), 2006, pp. 2080-2093 ? 2006 by the the Ecological Society of America COMPETITION AMONG PENGUINS AND CETACEANS REVEALS TROPHIC CASCADES IN THEWESTERN ROSS SEA, ANTARCTICA David G. Ainley,14 Grant Ballard,2 and Katie M.