Results 251 to 260 of about 8,466,171 (303)

The heat-mortality association in Jordan: Effect modification by greenness, population density and urbanization level. [PDF]

Sci Total Environ
Luque-García L, Bataineh S, Al-Bakri J, Abdulla FA, Al-Delaimy WK.   +4 more
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High-resolution ecological niche maps identify population-density hot-spots for Ebola disease spill-over in Uganda.

George P, Okware S, Olupot-Olupot P, Olupot-Olupot P.   +3 more
europepmc   +1 more source

Urban Population Density: A Comment [PDF]

Environment and Planning A: Economy and Space, 1981
The poor results obtained with certain members of the quadratic gamma family is shown to be due to a specification error in most of the members of that family. By choosing a more admissible travel-cost function, the displaced quadratic gamma function is derived, which does not contain this specification error.
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The many faces of population density

Oecologia, 2005
Population density, one of the most fundamental demographic attributes, may vary systematically with spatial scale, but this scale-sensitivity is incompletely understood. We used a novel approach-based on fully censused and mapped distributions of eastern grey squirrel (Sciurus carolinensis) dreys, beaver (Castor canadensis) lodges, and moose (Alces ...
Stephen J, Mayor, James A, Schaefer
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Survival variability and population density in fish populations

Nature, 2008
To understand the processes that regulate the abundance and persistence of wild populations is a fundamental goal of ecology and a prerequisite for the management of living resources. Variable abundance data, however, make the demonstration of regulation processes challenging.
Coilín, Minto, Ransom A, Myers, Wade, Blanchard   +2 more
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Density-vague population change

Trends in Ecology & Evolution, 1986
Explicit density-dependence differs from density-vagueness in the sort of regulation imposed on populations. Explicit density-dependence implies regulation toward a central equilibrium point, whereas density-vagueness implies population change away from the two extremes of extinction and immense densities.
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Population Density and Group Size

American Journal of Sociology, 1972
This study looks at the relationship between the size of the small interacting group (in numbers of persons) and its environment in this case, the density of its immediate population. We hypothesized that persons in more densely populated areas will gather for social interaction in smaller groups, in fewer bisexual groups.
J, Tucker, S T, Friedman
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Population density effects on longevity

Genetica, 1993
Population density, or the number of adults in an environment relative to the limiting resources, may have important long and short term consequences for the longevity of organisms. In this paper we summarize the way in which crowding may have an immediate impact on longevity, either through the phenomenon known as dietary restriction or through ...
J L, Graves, L D, Mueller
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Population Density and Mental Illness

The Journal of Social Psychology, 1994
(1994). Population Density and Mental Illness. The Journal of Social Psychology: Vol. 134, No. 4, pp. 545-546.
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