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Tag: "arctic" at biology news

Siberian lakes burp 'time-bomb' greenhouse gas

...irst circumpolar estimate of methane emissions for arctic lakes, linking process-based field surveys with remote sensing analysis. ...

Shrinking ponds signal warmer, dryer Alaska

...h, indicates that these landscape-level changes in arctic ponds are associated with recent climate warming in Alaska and may have profound effects on climate and wildlife. Over the past 50 years, Alaska has experienced a warming climate with longer growing seasons, increased permafrost thawing, an increase...

New method confirms importance of fungi in Arctic nitrogen cycle

...s shedding 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. ...

Record air pollution above the Arctic

... aerosols from eastern Europe were driven into the arctic atmosphere. Increased aerosol concentrations had already been measured at springtime of recent years. However, this „Arctic Haze" has never been as pronounced before. Aerosols constitute small particles in the atmosphere. They can be liquid or solid...

Tropical forest CO2 emissions tied to nutrient increases

... been accompanied by retreating glaciers, thinning arctic ice, rising sea levels and longer growing seasons in many regions. ...

Not just the birds

..., over the last 100-150 years, the introduction of arctic foxes and Norway rats (Rattus norvegicus) reduced the number of birds nesting on the islands. Arctic foxes were introduced in the late 1800's to maintain the North Pacific fur trade, and later removed in an attempt to return the islands to their mor...

Earth Rx: A microbial biotechnology prescription for global environmental health

...obe, from geothermal vents on the ocean's floor to arctic permafrost. Now, uncovering and categorizing this abundant biodiversity is one of the chief goals of scientists in the field of microbial ecology ?and may be the key to helping the planet –by putting these rich microbial communities to work to help s...

Disappearing arctic lakes linked to climate change

Continued arctic warming may be causing a decrease in the number and size of Arctic lakes. The issue is the subject of a paper published in the June 3 issue of the journal "Science." The paper, titled, "Disappearing Arctic Lakes" is the result of a comparison of sate...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...lish fox farming businesses on the islands. Mostly arctic foxes and smaller numbers of red foxes were introduced to more than 400 islands. Byrd, who has been involved in restoration efforts in the Aleutian islands since 1971, said most of the islands had major breeding colonies of seabirds before the arriv...

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