منابع مشابه
Conservation Ecology: Invasion of Matrix Species in Small Habitat Patches
The diversity, expressed as species richness in equal-sized samples, of wood-living beetles in successional stages of deciduous forest after forest fires approximately 100 years ago did not differ between patch sizes in this study. Thus, the crucial question for conservation is whether the lack of reduction in diversity in small patches means that a number of small patches can elevate the regio...
متن کاملHuman ecology: survival and disease patterns
THE LANCET • Vol 359 • March 30, 2002 • www.thelancet.com 1145 Changes in patterns of health, disease, and survival within populations over time indicate the interplay between human biology, culture, and environmental conditions. However, most epidemiological research, done within a particular population, focuses on identification of individual-level risk factors that operate in the foreground ...
متن کاملToward Gleasonian Landscape Ecology: From Communities to Species, From Patches to Pixels
The fusion of individualistic community ecology with the Hutchinsonian niche concept enabled a broad integration of ecological theory, spanning all the way from the niche characteristics of individual species, to the composition, structure, and dynamics of ecological communities. Landscape ecology has been variously described as the study of the structure, function, and management of large hete...
متن کاملFractal Population Ecology Theory
Abstract Purpose - The aim of this paper is to describe the population ecology theory through fractal thinking, an emergent human operating system that is creative, adaptive, healthy, and evolutionary; furthermore, a parallel is drawn between the population ecology model and the fractal structure. Top-down hierarchies are typically characterized by command and control systems of the authority t...
متن کاملReproductive Ecology and Cub Survival of Florida Black Bears
We investigated reproductive ecology and cub survival of Florida black bears (Ursus americanus floridanus) in Ocala National Forest and the adjacent residential area of Lynne, Florida, USA, 1999–2003. We documented production of 81 cubs from 39 litters. Average litter size was 2.08 6 0.11 (SE) cubs. The mean age of first reproduction was 3.25 6 0.27 years. Excluding females that reproduced in c...
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ژورنال
عنوان ژورنال: Science
سال: 2003
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.302.5651.1627b