Specialization is a concept based on a broad theoretical framework developed by
evolutionary biologists and ecologists. In the past 10 years, numerous studies have reported …

Extinction is rarely random across ecological and geological time scales. Traits that make
some species more extinction-prone include individual traits, such as body size, and …

Species distribution models should provide conservation practioners with estimates of the
spatial distributions of species requiring attention. These species are often rare and have …

The first photographs of the Earth to be taken from outer space are said to have had a
profound influence on how humanity perceives its place in the Universe. They provided a …

We reviewed empirical data and hypotheses derived from demographic, optimal foraging,
life-history, community, and biogeographic theory for predicting the sensitivity of species to …

Species invasions are extremely common and are vastly outpacing the ability of resource
agencies to address each invasion, one species at a time. Management actions that target …

We report on the extent of bird extinctions at San Antonio, a fragmented cloud forest site in
the western Andes of Colombia, for which surveys dating back to 1911 and 1959 an …

A relation between body size and threat of extinction for animal species has often been
hypothesized. However, evidence for the form of the relation is equivocal, and studies can …

Aim Data on geographical ranges are essential when defining the conservation status of a
species, and in evaluating levels of human disturbance. Where locality data are deficient …

Birds were surveyed within four zones defined along a gradient of decreasing impact by the
petroleum industry and small-scale agriculture in the moist tropical forest of the Cuyabeno …