Browsing by Subject "Population Density"
Now showing items 1-9 of 9
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Alcohol dependence and use of treatment services among women in the community.
(The American journal of psychiatry, 2004-10)OBJECTIVE:This study examined the extent and characteristics of alcohol dependence and the perceived need for and use of alcohol treatment services among women compared with men in a nonclinical sample of adults 18-64 years ... -
Eco-evolutionary trophic dynamics: loss of top predators drives trophic evolution and ecology of prey.
(PLoS One, 2011-04-19)Ecosystems are being altered on a global scale by the extirpation of top predators. The ecological effects of predator removal have been investigated widely; however, predator removal can also change natural selection acting ... -
Evidence for GC-biased gene conversion as a driver of between-lineage differences in avian base composition.
(Genome Biol, 2014)BACKGROUND: While effective population size (Ne) and life history traits such as generation time are known to impact substitution rates, their potential effects on base composition evolution are less well understood. GC ... -
Genomic signatures of near-extinction and rebirth of the crested ibis and other endangered bird species
(GENOME BIOLOGY, 2014)BACKGROUND: Nearly one-quarter of all avian species is either threatened or nearly threatened. Of these, 73 species are currently being rescued from going extinct in wildlife sanctuaries. One of the previously most ... -
How to protect half of Earth to ensure it protects sufficient biodiversity.
(Science advances, 2018-08-29)It is theoretically possible to protect large fractions of species in relatively small regions. For plants, 85% of species occur entirely within just over a third of the Earth's land surface, carefully optimized to maximize ... -
Quantitative analysis of forest fragmentation in the atlantic forest reveals more threatened bird species than the current red list.
(PloS one, 2013-01)Habitat loss and attendant fragmentation threaten the existence of many species. Conserving these species requires a straightforward and objective method that quantifies how these factors affect their survival. Therefore, ... -
Restoring diversity after cattail expansion: disturbance, resilience, and seasonality in a tropical dry wetland.
(Ecol Appl, 2011-04)As the human footprint expands, ecologists and resource managers are increasingly challenged to explain and manage abrupt ecosystem transformations (i.e., regime shifts). In this study, we investigated the role of a mechanical ... -
The Z-Axis: Elevation Gradient Effects in Urban America
(Economic Research Initiatives at Duke (ERID), 2016-06-07)This paper presents a comprehensive analysis of hilliness effects in American urban communities. Using data from seventeen cities, robust relationships are established between elevation patterns and density and income gradients. ... -
When top-down becomes bottom up: behaviour of hyperdense howler monkeys (Alouatta seniculus) trapped on a 0.6 ha island.
(PLoS One, 2014)Predators are a ubiquitous presence in most natural environments. Opportunities to contrast the behaviour of a species in the presence and absence of predators are thus rare. Here we report on the behaviour of howler monkey ...
