http://jp.dk/uknews/article976028.ece Spring too early in Greenland The early arrival of spring on Greenland could be throwing nature out of rhythm Researchers have witnessed a dramatic reaction from plants, animals and insects on Greenland due to spring's early arrival, which they believe can seriously alter the existing natural food chain, reported Berlingske Tidende newspaper Tuesday.
The study team, led by scientists from the National Environmental Research Institute in co-operation with Penn State University in the US, has just had the results of its 10-year project published in Current Biology magazine. The article details their observations in north-eastern Greenland, which show for the first time ever how radically an ecosystem is affected by a rise in temperatures.
Recording the timing of familiar signs of spring seen in plants, butterflies, birds, and other species, the scientists found that spring had arrived two weeks earlier than just 10 years ago, when average June temperatures were only one degree lower. A few species have shown themselves more than a month earlier than in 1996.
In parts of Europe the early advancement during the same period was 2.5 days per decade and 5.1 days globally.
The article's head author, Toke T Høye from the National Environmental Research Institute, said when the snow melts earlier in the area it allows the plants and animals to flourish and develop earlier.
'You would initially think this development is a good thing because it's positive for the advancement of life,' he said. 'But we can't be certain that is the case. It's unknown whether plants and insects culminate just as the birds, which are higher up in the food chain, need them to.'
Høye said the situation could lead to a migration of many species northward where conditions resemble those of the area 10 years ago.
Although the lifecycles of flora and fauna in Greenland may seem far away from most people's everyday lives, Høye said it could serve as a harbinger of the consequences of climate change.
'If we believe we have a shared responsibility for nature and its life forms, then it's important to be aware of these changes. We can see conclusively that the circumstances on Greenland are a warning of how sensitive nature is on the whole to climate change.'