2012-07-05 18:21
Climate change ‘causes leaves to narrow’
The team led by Greg Guerin, from the University of Adelaide studied specimens from the wild and from herbarium collections dating back more than 120 years to find that the leaf width had decreased by 2 millimeters. Guerin said the team chose to analyze the narrow-leaf hopbush because it displays different leaf characteristics in different climates. The researchers compared 250 samples collected over 127 years from Flinders Ranges, southern Australia’s largest mountain range, to 274 field samples they gathered from the same mountain at 50 meter altitude intervals. Guerin said the next step is to test whether similar patterns are emerging in other species in other regions since this study is the first of its kind. "There is some good news here in that some Australian plant species may have the potential to respond to and cope with increasing temperatures," he said, warning that other species might be less well suited to adapt. |
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