Results 161 to 170 of about 195,388 (199)

Biological selectivity of extinction

2005
Selective survival across major extinction event horizons is both a bothersome puzzle and an opportunity to delimit the biologically interesting question of causality. Heritable differences in characters may have predictable consequences in terms of differential species survival.
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Taxon age and selectivity of extinction

Paleobiology, 1991
Taxon-age distributions were compiled for families of marine animals surviving or becoming extinct in each stage of the Phanerozoic. I demonstrate, through the use of a modified bootstrap analysis, that there is no difference between the longevity of families becoming extinct during times of background extinction and times of mass extinction.
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De-extinction as Artificial Species Selection

Philosophy & Technology, 2016
This paper offers a paleobiological perspective on the debate concerning the possible use of biotechnology to bring back extinct species. One lesson from paleobiology is that extinction selectivity matters in addition to extinction rates and extinction magnitude.
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Extinction: guidelines for its selection and use

The Personnel and Guidance Journal, 1974
This article focuses on the use of “extinction” as a classroom behavior modification technique: whether or not the counselor should suggest its use in a given situation and how to insure its maximal effectiveness once it is chosen as an appropriate procedure.
ROBERT B. BENOIT, G. ROY MAYER
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Mass extinctions: Ecological selectivity and primary production

Geology, 1991
If mass extinctions were caused by reduced primary productivity, then extinctions should be concentrated among animals with starvation-susceptible feeding modes, active lifestyles, and high-energy budgets. The stratigraphic ranges (by stage) of 424 genera of bivalves and 309 genera of articulate brachiopods suggest that there was an unusual reduction ...
Melissa Clark Rhodes, Charles W. Thayer
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SELECTIVE SPATIAL ATTENTION IN PATIENTS WITH VISUAL EXTINCTION

Brain, 1990
The present study was designed to verify the attentional performance of patients with parietal lesions in the experimental condition in which they had to pay attention to 3 spatial positions located on the left, on the right and directly above the fixation stimulus (Experiment 1) and to only 1 of the 3 spatial positions at a time (Experiment 2). Twelve
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Selective extinction among end-Triassic European bivalves

Geology, 1995
Ongoing controversies surrounding the end-Triassic extinction highlight the need for identifying a causal mechanism leading to extinction. Bivalve data from Lombardia (Italy), Northern Calcareous Alps (Austria and Germany), and northwest Europe (England and Wales) provide the biologic signal of selective extinction to compare two competing extinction ...
Christopher A. McRoberts, Cathryn R. Newton   +1 more
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Problems in Extinction Model Selection and Parameter Estimation

Environmental Management, 2000
It is a vexing problem to achieve a consensus about the proper scientific way to assess population viability for habitat conservation plans. Rather than a hypothesis-testing approach, here it is proposed to select population models, estimate extinction parameters, and assess prediction uncertainty using a pragmatic, empirical Bayesian approach.
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Extinction selectivity and ecology in planktonic foraminifera

Palaeogeography, Palaeoclimatology, Palaeoecology, 1992
Abstract Planktonic foraminifera have radiated three times since the mid-Cretaceous and independently evolved similar morphological groups and patterns of species longevity in each diversification. All morphological groups include substantial numbers of short-ranging species, but only some groups include large numbers of long-ranging taxa.
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Environmental determinants of extinction selectivity in the fossil record

Nature, 2008
The causes of mass extinctions and the nature of biological selectivity during extinction events remain central questions in palaeobiology. Although many different environmental perturbations have been invoked as extinction mechanisms, it has long been recognized that fluctuations in sea level coincide with many episodes of biotic turnover. Recent work
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