Leaves of trees respond to climate change Scientists have shown
Scientists from Australia decided to compare the leaves of herbarium specimens, which gathers more than 120 years, and modern patterns. It was found that the width of leaf plate plants decreased with time. The reason can only be global climate change, experts believe.
More attention was paid to the leaves of the plant dodoneya (Dodonaea viscosa ssp angustissima), since it had in relation to climatic zones sheet sizes vary the most. Total analyzed more than 250 copies of the herbarium collected in one region — on a ridge Flinders in Australia. The study also included 274 fresh samples taken directly from mountain plants grown with elevation change of 50 meters each.
It turned out that 127 years sheet width Dodona reduced by 2 mm. If we consider that from 1950 to 2005, the air temperature in the study area increased by 1,5 ° C, the changes in the morphology of plants at all altitudes and in all populations clearly caused warming. Since the plant is trying to cope with excessive evaporation from the leaf surface. Interestingly, the rainfall has remained virtually unchanged.
Researchers plan to continue their observations, taking samples of other plants from other regions. Next, a more in-depth research will be found those environmental effects which resulted in changes in the characteristics of the plant. This will help you understand what strategies are used by living organisms to adapt to the new climate, and subsequently use them in the right areas. Now it is known that when the body can not adapt internally, it will either die or migrate, if the population is too small and does not have a broad genetic potential.