Results 301 to 310 of about 293,102 (343)
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SSRN Electronic Journal, 2012
This is an early portion of a forthcoming work of practical moral philosophy, one arguing that humanity, as a species, should want to survive. This particular piece argues that neo-classical economics places an emphasis on short-term gain over precaution and in doing so places lives of individual humans — and even the species itself — at risk.
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This is an early portion of a forthcoming work of practical moral philosophy, one arguing that humanity, as a species, should want to survive. This particular piece argues that neo-classical economics places an emphasis on short-term gain over precaution and in doing so places lives of individual humans — and even the species itself — at risk.
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Extinction Risk in Endemic Marine Fishes
Conservation Biology, 2011[Extract] Developing effective management strategies for conserving species requires identifying the species with the greatest probability of extinction and determining why the probabilities are high. In terrestrial systems, endemic island species have the highest rates of extinctions (Frankham 1998; Whittaker 1998).
Hobbs, J-P. A. +2 more
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Comparing Risk Factors for Population Extinction
Journal of Theoretical Biology, 2000Extinction risk of natural populations of animals and plants is enhanced by many different processes, including habitat size reduction and toxic chemical exposure. We develop a method to evaluate different risk factors in terms of the decrease in the mean extinction time.
H, Hakoyama, Y, Iwasa, J, Nakanishi
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Extinction: Complexity of Assessing Risk
Science, 2001In discussing the extinction risk of naive prey species confronted by reintroduced predators ( Science 's Compass, 9 Feb., p. [997][1]), J. L. Gittleman and M. E. Gompper say that, apparently because of diverse anthropogenic impacts, “a markedly higher proportion of ungulate species compared ...
Ross D. E. MacPhee, Clare Flemming
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Reducing the Risk of Human Extinction
Risk Analysis, 2007In this century a number of events could extinguish humanity. The probability of these events may be very low, but the expected value of preventing them could be high, as it represents the value of all future human lives. We review the challenges to studying human extinction risks and, by way of example, estimate the cost effectiveness of preventing ...
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The American Naturalist, 1988
Well-known theoretical predictions are that the risk of extinction should decrease with maximum population size (K) and should increase with the temporal coefficient of variation in population size (CV). In an unvarying environment, where extinction is caused solely by demographic accidents, the risk of extinction should decrease steeply with K; the ...
Stuart L. Pimm +2 more
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Well-known theoretical predictions are that the risk of extinction should decrease with maximum population size (K) and should increase with the temporal coefficient of variation in population size (CV). In an unvarying environment, where extinction is caused solely by demographic accidents, the risk of extinction should decrease steeply with K; the ...
Stuart L. Pimm +2 more
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EXTINCTION RISK OF HETEROGENEOUS POPULATIONS
Ecology, 2005The extinction of small populations is a stochastic process, affected by both environmental variation and chance variation in the fates of individuals (demographic stochasticity). Here I examine how population extinction risk is affected by variation in the underlying individual phenotypes, using a branching-process approach.
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Extinction risks from climate change
Science, 2015How will climate change affect global biodiversity? [Also see Report by Urban et al. ]
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Explaining variation in extinction risk
2002Abstract How can we approach the problem, identified by Bob May and John Lawton (see quotations at the start of this section), of understanding the ecological mechanisms that underlie interspecific variation in extinction risk? Nearly 10,000 living bird species are recognized, of which 12% (1183) are currently classified as being ...
Peter M Bennett, Ian P F Owens
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Extinction risk in fragmented habitats
Animal Conservation, 2004AbstractPopulation models incorporating demographic, environmental and genetic stochasticity were created from long‐term data on natural populations of 30 species of vertebrates. The probability of extinction for a single population in a continuous habitat was compared to that of multiple isolated, or semi‐isolated, populations occupying a fragmented ...
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