Though a third of amphibian species worldwide are thought to be imperiled, existing assessments simply categorize extinction risk, providing little information on the rate of population losses. We conducted the first analysis of the rate of change in the probability that amphibians occupy ponds and other comparable habitat features across the United States. We found that overall occupancy by am...

With growing concern about the prospects of many marine species, a report earlier this summer highlighted the plight of pelagic, open ocean sharks, which are increasingly under threat. The International Union for the Conservation of Nature (IUCN) shark specialist group reported that 32 per cent of 64 species of open-sea sharks and rays are under threat of extinction. “Despite mounting threats, ...

large tracts of this are nature reserves, the study found that habitats with the highest diversity and abundance of these species were largely outside the protected forest areas. “Drawing on historical records and comparisons with other West Indian islands, this study found most of St Lucia’s native forest species have declined significantly in population size with some at critically low levels...

This study maps distribution and spatial congruence between Above-Ground Biomass (AGB) and species richness of IUCN listed conservation-dependent and endemic avian fauna in Palawan, Philippines. Grey Level Co-Occurrence Texture Matrices (GLCMs) extracted from Landsat and ALOS-PALSAR were used in conjunction with local field data to model and map local-scale field AGB using the Random Forest alg...

Disclaimer This publication is a joint product of staff from The World Conservation Union (IUCN), the International Institute for Environment and Development (IIED), and an independent consultant, prepared by IUCN on behalf of the Poverty-Environment Partnership (PEP). The views expressed herein do not necessarily reflect those of their respective governing bodies, or when applicable, the count...

This paper provides an overview of conservation status and major threats to grouse based on information collected by the IUCN/SSC BirdLife WPA Grouse Specialist Group during 2004-2005. At the time of compiling the first Grouse Action Plan (Storch 2000b) in 1999, no grouse species were considered to be threatened following the IUCN criteria, but three species with limited geographic distribution...

The International Union for Conservation of Nature (IUCN; www.iucn.org) is the world ́s largest environmental network, with 1,300 member organizations and relying on the input of about 16,000 experts. It provides knowledge and tools that enable and promote the sustainable development at a global level. Among its many outputs, the Red List of Threatened Species (www.iucnredlist.org) is the most w...