Following Levins' patch occupancy model, we presented a differential-equation model, in which both the metapopulation dynamics and the dynamics of the fraction of suitable patches in the habitat are characterized. Habitat restoration induced by organism itself (internal restoration) and by other organisms or/and abiotic causes (external restoration) were incorporated in the model, together with...

While intended to increase the habitat available to endangered species, the restrictions of the Endangered Species Act (ESA) increase the costs of harboring an endangered species to private landowners and create incentives for private landowners to reduce habitat. This paper illustrates the incentive for habitat destruction with a simple model of private land use under the ESA, and uses it to p...

The status of the American crocodile (Crocodylus acutus) in the coastal zone of Belize was investigated from July 1996 to October 1997. Two hundred and sixty-two crocodiles were observed during spotlight surveys of 952.2 km of the survey route (0.28 crocodiles/km). Encounter rates were highest in the Turne€e Atoll, and low to moderate elsewhere. Most nesting occurs on elevated beach ridges in t...

Fish habitat loss has been prevalent over the last century in Canada. To prevent further erosion of the resource base and ensure sustainable development, Fisheries and Oceans Canada enacted the habitat provisions of the Fisheries Act in 1976. In 1986, this was articulated by a policy that a "harmful alteration, disruption, or destruction to fish habitat" (HADD) cannot occur unless authorised wi...

Controlling invasive alien species invasion and maintaining the survival of native have attracted increasing attention, habitat destruction can be used to achieve these aims. However, whether how promote long-term facing invaders through use remain unclear. In this study, we developed a spatially explicit simulation model in which natives were exposed with different properties, including spatia...

Habitat clearance remains the major cause of biodiversity loss, with consequences for ecosystem services and for people. In response to this, many global conservation schemes direct funds to regions with high rates of recent habitat destruction, though some also emphasize the conservation of remaining large tracts of intact habitat. If the pattern of habitat clearance is highly contagious, the ...

in areas protected by the current rules are that it can be a special legal regime of the named areas, but these rules apply and a special legal regime to prevent law enforcement will be more general, but it also confirms the fact that the general rules in the areas of special rules that only apply in these areas is about legal regime make up. state eligibility rules related to the epa, hunting ...