An international team led by the Forest Technology Centre of Catalonia has carried out the first large-scale study of the threats facing freshwater fish in the Mediterranean basin. Invasive species, along with over-exploitation of water resources, are the most important pressures, and those that expose fish to the greatest risk of extinction. “The continental fish [...]

A new assessment of the Arctic’s biodiversity reports a 26 per cent decline in species populations in the high Arctic. Populations of lemmings, caribou and red knot are some of the species that have experienced declines over the past 34 years, according to the first report from The Arctic Species Trend Index (ASTI), which provides [...]

With concern over mercury contamination of tuna on the rise and growing information about the health effects of eating contaminated fish, scientists would like to know exactly where the pollutant is coming from and how it’s getting into open-ocean fish species. A new study published in the journal Environmental Science & Technology uses chemical signatures [...]