Nine Mile Run near Pittsburgh, PA. Rising temperatures and changing rainfall patterns as a result of changing climate are forcing plants and animals to migrate, or change their ranges, at projected rates of at least 1/4 mile a year. This according to a study published Dec. 23 in the journal Nature. Photo by leafy/flickr.
PR from Carnegie Institution of Washington: "Global warming is causing climate belts to shift toward the poles and to higher elevations. To keep pace with these changes, the average ecosystem will need to shift about a quarter mile each year, says a new study led by scientists at the Carnegie Institution. For some habitats, such as low-lying areas, climate belts are moving even faster, putting many species in jeopardy, especially where human development has blocked migration paths...."
Nature: The Velocity of Climate Change
From Abstract: "The ranges of plants and animals are moving in response to recent changes in climate. As temperatures rise, ecosystems with 'nowhere to go', such as mountains, are considered to be more threatened. However, species survival may depend as much on keeping pace with moving climates as the climate's ultimate persistence. Here we present a new index of the velocity of temperature change (km yr-1), derived from spatial gradients (*C km-1) and multimodel ensemble forecasts of rates of temperature increase (*Cyr-1) in the twenty-first century. This index represents the instantaneous local velocity along Earth's surface needed to maintain constant temperatures, and has a global mean of 0.42kmyr-1..."
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