Habitat Destruction and the Extinction Debt Revisited
نویسندگان
چکیده
منابع مشابه
Habitat destruction and the extinction debt revisited: the Allee effect.
Habitat destruction, often caused by anthropogenic disturbance, can lead to the extinction of species at an unprecedented rate. It is important, therefore, to consider habitat destruction when assessing population viability. Another factor often ignored in population viability analysis, is the Allee effect that adds to the risk of populations already on the verge of extinction. Understanding th...
متن کاملHabitat destruction, environmental catastrophes, and metapopulation extinction.
The extinction process of fragmented populations, characterized by a small number of conspecifics inhabiting each patch, is heavily affected by natural and human disturbance. To evaluate the risk of extinction we consider a network of identical patches connected by passive or active dispersal and hosting a finite, discrete number of individuals. We discuss three types of disturbance affecting t...
متن کاملExtinction debt repayment via timely habitat restoration
Habitat destruction threatens the viability of many populations, but its full consequences can take considerable time to unfold. Much of the discourse surrounding extinction debts—the number of species that persist transiently following habitat loss, despite being headed for extinction—frames ultimate population crashes as the means of settling the debt. However, slow population decline also op...
متن کاملExtinction in multispecies and spatially explicit models of habitat destruction.
proceeds, some species may be driven to extinction only Loss of habitat due to human activities is a major threat to reestablish in the community following more extensive to biological diversity (Ehrlich and Ehrlich 1981; Wilson habitat destruction that drives more competitive species 1988). Recent models of competition among sessile orto extinction. Thus, the models of Tilman et al. (1994, gan...
متن کاملExtinction Debt and Colonizer Credit on a Habitat Perturbed Fishing Bank
Temporal changes in occupancy of the Georges Bank (NE USA) fish and invertebrate community were examined and interpreted in the context of systems ecological theory of extinction debt (EDT). EDT posits that in a closed system with a mix of competitor and colonizer species and experiencing habitat fragmentation and loss, the competitor species will show a gradual decline in fitness (occupancy) e...
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ژورنال
عنوان ژورنال: Ecological Applications
سال: 1996
ISSN: 1051-0761
DOI: 10.2307/2269483