Plants and animals race for survival as climate change creeps across the globe

By David Adam
www.guardian.co.uk, Wednesday 23 December 2009 18.20 GMT Lowland tropics, mangroves and deserts at greater risk than mountainous areas as global warming spreads, study finds Global warming creeps across the world at a speed of a quarter of a mile each year, according to a new study that highlights the problems that rising temperatures pose to plants and animals. Species that can tolerate only a narrow range of temperatures will need to move as quickly if they are to survive. Wildlife in lowland tropics, mangroves and desert areas are at greater risk than species in mountainous areas, the study suggests. “These are the conditions that will set the stage, whether species move or cope in place,” said Chris Field, director of the department of global ecology at the Carnegie Institution in the US, who worked on the project. “Expressed as velocities, climate change projections connect directly to survival prospects for plants and animals.” The study, by scientists at the Carnegie Institution, Stanford University, the California Academy of Sciences, and the University of California, Berkeley, combined information on current and projected future climate to calculate a “temperature velocity” for different parts of the world. They found that mountainous areas will have the lowest velocity of temperature change, meaning that animals will not need to move very far to stay in the temperature range of their natural habitat. However, much larger geographic displacements are required in flatter areas such as flooded grasslands, mangroves and deserts, in order for animals to keep pace with their climate zone. The researchers also found that most currently protected areas are not big enough to accommodate the displacements required. …