Unicellular algae back from the Pacific to the Arctic due to melting of polar ice big changes in the Earth's climate reality, a big change in meteozavisimosti too. Everyone feels the hard way.
An example of big changes in the Earth's climate is the fact that single-celled alga returned from the Pacific to the Arctic due to melting of polar ice.
We understand well that the return of the algae is not just a comeback, but a reflection of the global and, in addition, the active processes.
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Unicellular algae, extinct in the North Atlantic Ocean about 800 million years ago, has returned from the Pacific to the Arctic due to melting of polar ice.
This is the first trans-Arctic migration of our time and a sign of great change. It is a measure of how quickly changes occur and what might happen in the future, if the Arctic continues to melt, - said Chris Reid of Ocean Science Foundation the Sir Alister Hardy (UK).
| In summer 2010, the retreat of Arctic ice has reached record proportions. The red line shows the median. (Image of NOAA.) |
Arctic sea ice is undergoing decadence, for three decades, even opened a passage between the Atlantic and Pacific oceans. According to forecasts of the Arctic will be completely ice-free in summer in 30 years.
Report on the discovery of algae - is only one of the three hundred articles prepared by the European Union project CLAMER, which is dedicated to the study of marine ecosystems due to climate change.
Neodenticula seminae belongs to a group of organisms with a glass-walled - the so-called diatoms. This is not the only creature that can take advantage of the retreat of Arctic sea ice for travel. For example, in 2010 in the Mediterranean gray whale was spotted.
This species has disappeared from the North Atlantic to the XVIII century. and since then has lived only in the Pacific Ocean, reports the journal Marine Biodiversity Research.
CLAMER researchers found other changes in European waters. Types of moving to the north - for example, in the North Sea tepleyuschem growing variety of fish. The warming is causing problems with the biological cycles of organisms - so the appearance of larval bivalve Macoma balthica confined to tiny flowering plants and the absence of predators, but today, the sequence of events is broken and shellfish reproduction suffers.
Recorded as changes in the world of copepods (Copepoda) with potentially serious consequences for fisheries, for these crustaceans fed cod.
The main thing - it's the speed at which things change. - Says Kate Filippart of the Chartered Institute of Marine Research (The Netherlands). - We have already been changes, periods of warming and cooling, even the ice ages, but it is much slower. The current speed is unprecedented. In addition, the previous shift is not accompanied by pressure from human activity which leads to pollution, habitat loss, ocean acidification and overfishing.
Prepared according to LiveScience.
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