Just how fast is the climate changing?
Author: MATTHEW CAWOOD
Source: Farmonline
CLIMATE change has a speed: about 420 metres per year. That's the average rate at which temperature zones will shift across global landscapes during this century, according to research led by the Carnegie Institute in the United States.
It is also an estimate of how quickly plants and animals will need to move to stay within current climatic zones, and an indication of the pressure on agriculture to adapt as seasonal conditions shift.
Recently published in the scientific journal Nature, the research attempts to predict "temperature velocities" as a way of expressing how climate change will influence plants and animals adapted to certain climatic zones.
Such work is not entirely new, according to Professor Barry Brook, who occupies the Sir Hubert Wilkins Chair of Climate Change at Adelaide University, but it does provide a useful picture of how climate change may advance across landscapes - including farmland.
Unlike plants and animals, which must move or evolve to survive climate shifts, agriculture...