Working landscapes need at least 20% native habitat

Riparian Forest as Habitat for the Least

--Data are presented on vegetation structure in Least Bell's Vireo (Vireo bellii pusillus) breeding habitats. A discussion of vegetation and several o"ther fac­ tors relevant to breeding success of this endangered species is presented. Recommendations are made for actions to en­ sure the future of the subspecies as a breeding inhabitant of riparian forests.

Threshold effects of habitat fragmentation on fish diversity at landscapes scales.

Habitat fragmentation involves habitat loss concomitant with changes in spatial configuration, confounding mechanistic drivers of biodiversity change associated with habitat disturbance. Studies attempting to isolate the effects of altered habitat configuration on associated communities have reported variable results. This variability may be explained in part by the fragmentation threshold hypo...

Application of Habitat Abundance NRS534: Ecology of Fragmented Landscapes

In this brief, I attempt to describe the recent findings that the amount of habitat is the most important factor behind population persistence and abundance. Resource managers should, therefore, focus their attention on creating reserves that are as large as possible and not be persuaded by recent discussions, as indicated by Trzcinski et al. (1999) and Villard et al. (1999), that the careful c...

Maintaining and Restoring Avian Habitat in Agricultural Landscapes

Complementary habitat use by wild bees in agro-natural landscapes.

Human activity causes abrupt changes in resource availability across the landscape. In order to persist in human-altered landscapes organisms need to shift their habitat use accordingly. Little is known about the mechanisms by which whole communities persist in human-altered landscapes, including the role of complementary habitat use. We define complementary habitat use as the use of different ...