Content with tag threatened species .

Human impact is changing the way biodiversity is organized

Zoogeographical regions, or zooregions, are areas of the Earth defined by species pools that reflect ecological, historical and evolutionary processes acting over millions of years. Consequently, researchers have assumed that zooregions are robust and unlikely to change on a human timescale. However, the increasing number of human?mediated introductions and extinctions can challenge this assumption.

The six most important threats for petrels and shearwaters

Shearwaters and petrels are highly adapted seabirds that occur across all the world’s oceans. Petrels are a threatened seabird group comprising 120 species. They have bet-hedging life histories typified by extended chick rearing periods, low fecundity, high adult survival, strong philopatry, monogamy and long-term mate fidelity and are thus vulnerable to change. Here, 38 petrel conservation researchers summarize information regarding the most important threats according to the IUCN Red List...

Cities may save some threatened species but not their ecological functions

Urbanization is one of the main causes of biodiversity loss worldwide. Wildlife responses to urbanization, however, are greatly variable and, paradoxically, some threatened species may achieve much larger populations in urban than in natural habitats. Urban conservation hotspots may therefore help some species avoid regional or even global extinctions, but not conserve their often overlooked ecological functions in the wild. This issue is being addressed in this study by using two species of...

The spatial distribution of an insular cliff-nesting raptor community

The specific spatial distribution and habitat association are major issues in ecology and conservation. Nesting sites of five cliff-nesting raptors (Egyptian vulture [a locally extinct species], common buzzard, osprey, common kestrel, Barbary falcon), and common raven were located and georeferenced on one of the most biodiverse hotspot within the Canary Islands (Teno, Tenerife).