Large Carnivores and the Conservation of Biodiversity
Justina Ray, Kent H. Redford, Robert Steneck, Joel Berger, Department of Ecology Evolution and Conservation Biology Joel Berger, PhD
Island Press, 2005 - 526 páginas
Large Carnivores and the Conservation of Biodiversity brings together more than thirty leading scientists and conservation practitioners to consider a key question in environmental conservation: Is the conservation of large carnivores in ecosystems that evolved with their presence equivalent to the conservation of biological diversity within those systems? Building their discussions from empirical, long-term data sets, contributors including James A. Estes, David S. Maehr, Tim McClanahan, AndrFs J. Novaro, John Terborgh, and Rosie Woodroffe explore a variety of issues surrounding the link between predation and biodiversity: What is the evidence for or against the link? Is it stronger in marine systems? What are the implications for conservation strategies? Large Carnivores and the Conservation of Biodiversity is the first detailed, broad-scale examination of the empirical evidence regarding the role of large carnivores in biodiversity conservation in both marine and terrestrial ecosystems. It contributes to a much more precise and global understanding of when, where, and whether protecting and restoring top predators will directly contribute to the conservation of biodiversity. Everyone concerned with ecology, biodiversity, or large carnivores will find this volume a unique and thought-provoking analysis and synthesis.
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Variability of Trophic Cascades
Do Marine Systems Have the strongest Trophic Cascades?
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absence abundance adult animals areas bears become behavior biodiversity biomass cause changes chapter communities competition conservation consumers coral decline densities diet distribution diversity dominant dynamics ecological ecosystems effects et al evidence example extinction extirpated factors Figure fish forcing forest functional guilds habitat herbivores human hunting impact important increased indicate influence interactions islands kelp forests killed land large carnivores less limited lions loss marine mean moose native natural North numbers occur Park period plants Pleistocene population possible potential predators predicted prey processes productivity protected question range rare rates recent red deer reduced reefs region regulation relationship relatively remain requirements response restoration result role sea otters sea urchins selection similar species Steneck strong structure studies suggest terrestrial tigers tion top-down trophic cascades trophic levels ungulates vegetation whales white-tailed deer wild wolf wolves