Pyrenean Institute of Ecology (CSIC)

A team from Stanford University (USA) has analysed the conservation status of 1,376 species of scavenger animals. The results, published in the journal PNAS, indicate that 36% of them are threatened or in decline, especially large species and obligate scavengers, which depend exclusively on carrion for food. In contrast, the number of small and facultative scavengers, such as rodents, for which carrion is not their only source of food, is increasing. According to the authors, this ‘could increase the risks of diseases that large scavengers have helped to mitigate’.

International research on more than 3,000 tree and shrub species in 164 cities -including Barcelona, Valencia and Santa Cruz de Tenerife- reveals that up to two-thirds of urban tree species may already be experiencing climatic conditions that exceed their potential climate tolerance. The study is published in Nature Climate Change.