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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...