Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Warming Makes Polar Bear “Brutalized”

28.02.2006


During migration, polar bears reach mainland by ice. The exit to the coast is extremely important for them, as bears find food there - remains of walrused perished at coastal breeding-grounds, remainder of aboriginal population’s sea fishery, ringed seal (Pusa hispida). Pregnant females come out to the locations of hiding into maternity dens. Lagging of ice sheet arrival in the south makes a lot of bears reach mainland by swimming.



In 2005, reports appeared that polar bears were more frequently found swimming in the open sea in the direction of the mainland. The animals often die as they are not adapted to lengthy stay in the open sea, where roughness is high in contrast to water areas covered by ice. The bears that reached the mainland are exhausted and hungry. Thus makes them particularly vulnerable, as the animals lose caution in search of food, come out to villages and sometimes attack people.

One more inhabitant of the Arctic Zone – the walrus – suffers from the effects of global warming. At the beginning of autumn migration, walruses have to overpass hundreds of kilometers from the edge of the ice up to the Arctic coast of Chukotka, where they can rest in coastal breeding-grounds before they finally leave the Chuckchee Sea. Previously, longstanding drift-ice was always present to some extent at an insignificant distance from the coast, providing walruses with a platform for rest during their migration from the north to the south.


Hunters from coastal villages point out that walruses come to the breeding-grounds very exhausted. Therefore, if something prevents them from coming out into the coast, the animals (particularly young walruses and walrus-calves of the first year of life) may perish.

Since 2003, the WWF has been executing the polar bear preservation project in Chukotka. The project includes support of the Wrangel Island reserve, “maternity hospital” for polar bears, and establishment of secured territories along the coast. A very important part of the project is the polar bear migration monitoring in the area of coastal villages along the Chuckchee Sea, where appearance of these animals in autumn period is commonplace.

Sergey Komarov | alfa
Further information:
http://www.informnauka.ru

More articles from Ecology, The Environment and Conservation:

nachricht How does the loss of species alter ecosystems?
18.05.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

nachricht Excess diesel emissions bring global health & environmental impacts
16.05.2017 | International Institute for Applied Systems Analysis (IIASA)

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

Im Focus: Using graphene to create quantum bits

In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.

In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

Physicists discover mechanism behind granular capillary effect

24.05.2017 | Physics and Astronomy

Measured for the first time: Direction of light waves changed by quantum effect

24.05.2017 | Physics and Astronomy

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>