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Tag: "tundra" at biology news

Lands surface change on Alaska tundra creating longer, warmer summers in Arctic

... since the early 1960s the spring thaw in Alaska's tundra country is arriving an average of 2.3 days earlier...ion change is pretty dramatic," Epstein said. "The tundra is getting greener, and there is a noticeable increase in shrubs. This is observable from satellite ...

Disappearing arctic lakes linked to climate change

...d Hinzman, who has also compared satellite data of tundra ponds on the Seward Peninsula near Council, Alaska and found that the surface pond area there had decreased over the last 50 years. In this latest study, comparing data from 1973 with findings from 1997-98, the total number of large lakes decreased ...

Scientists sequence DNA of woolly mammoth

...l was shown to belong to microorganisms living the tundra soil. The study indicates that any organism that has been trapped in frozen ice or a permafrost environment for up to one million years will be an open book to the researchers. The search is now on for more specimens from plant, animal, and man tha...

Students discover 11,000 year old remains of Irish Elk

...d 11,000 years ago. The giant deer roamed the open tundra landscape that was widespread in northern Europe at the end of the last Ice Age, as the glaciers retreated northwards. The students who found the elk were taking part in a field trip examining the Manx landscape. Dr Peter Davey, Director of the Cen...

First wolverine radio-collared in Pacific Northwest

...ers. They are primarily found in boreal forest and tundra habitats in the far north, but also occur in mountainous terrain at the southern end of their current range in the Cascades and Northern Rockies. They prey on everything from moose to mice, and often rely heavily on scavenging for food during winter...

Not just the birds

...thern climate, the islands are covered in maritime tundra and nutrient-impoverished soil. With no native mammals, vast populations of seabirds (29 species currently) use the area for nesting. However, over the last 100-150 years, the introduction of arctic foxes and Norway rats (Rattus norvegicus) reduced t...

New method confirms importance of fungi in Arctic nitrogen cycle

...ing light not only on the nitrogen cycle in arctic tundra ecosystems, but can be applied to other nitrogen-poor ecosystems. "In the future, studies of plant nitrogen supply in all nitrogen-poor ecosystems must include these important transfers between plants and fungi," says Hobbie. ...

K-Staters design and build a low-cost remote sensing tool for environmental studies

...rsus Amazon forests versus African savannah versus tundra in Alaska," Ham said. "The earth's atmosphere links all cultures and nations. By that, I mean that carbon dioxide emitted in China, for example, can impact the vegetation in North America or Europe and vice versa. Any decisions about climate change ...

Tundra disappearing at rapid rate

... of northern Canada are taking over what were once tundra landscapes--forcing out the species that lived the...e. The boundary, or treeline, between forest and tundra ecosystems is a prominent landscape feature in both Arctic and mountain environments. As global temp...

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