Results 281 to 290 of about 98,902 (310)
The Depositional Record, EarlyView.We produced the first reconstruction of the coral species composition of MIS5d–a reefs in the Florida Keys and compared it with existing regional records from MIS5e, the Holocene, the recent past (1996) and the present (2022) to evaluate how Florida's reefs changed throughout the late Quaternary.
Lauren T. Toth +3 more
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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 ...
H. Lee Jones +2 more
openaire +2 more sources
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 ...
H. Lee Jones +2 more
openaire +2 more sources
Trends in Ecology & Evolution, 1999
Jean Baptiste de Lamarck and Thomas Huxley, two of the foremost thinkers of the 18th and 19th centuries, believed that humanity could not cause the extinction of marine species. Their opinions reflected a widespread belief that the seas were an inexhaustible source of food and wealth of which people could barely use a fraction.
Callum M. Roberts, Julie P. Hawkins
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Jean Baptiste de Lamarck and Thomas Huxley, two of the foremost thinkers of the 18th and 19th centuries, believed that humanity could not cause the extinction of marine species. Their opinions reflected a widespread belief that the seas were an inexhaustible source of food and wealth of which people could barely use a fraction.
Callum M. Roberts, Julie P. Hawkins
openaire +3 more sources
Population Variability and Extinction Risk
Conservation Biology, 2000Abstract: Population models generally predict increased extinction risk (ER) with increased population variability ( PV ), yet some empirical tests have provided contradictory findings. We resolve this conflict by attributing negative measured relationships to a statistical artifact that arises because PV tends to be underestimated for populations ...
Linda Qvarnemark +3 more
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Extinction Risk and Conservation Priorities
Science, 2006Threatened species lists based on extinction risk are becoming increasingly influential for setting conservation priorities at regional, national, and local levels. Risk assessment, however, is a scientific endeavor, whereas priority setting is a societal process, and they should not be ...
Sally Walker +10 more
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Brazilian killifishes risk extinction
Science, 2018The annual killifishes are a diversified group of small fish in Africa and South America ([ 1 ][1]). Annual killifish are unique in their ability to survive in ephemeral pools; they have short, seasonal life cycles, laying eggs that lie dormant in the soil once the pools have evaporated and ...
Luis Esteban Krause Lanés +1 more
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2022
This chapter evaluates the problem of extinction. Many species are currently on the brink of extinction due to increasing human activity; this is well documented in the well-studied groups of birds, mammals, and amphibians. Island species have had a higher rate of extinction than mainland species, due to small population sizes and less previous ...
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This chapter evaluates the problem of extinction. Many species are currently on the brink of extinction due to increasing human activity; this is well documented in the well-studied groups of birds, mammals, and amphibians. Island species have had a higher rate of extinction than mainland species, due to small population sizes and less previous ...
openaire +1 more source
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.
openaire +2 more sources
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 ...
openaire +3 more sources