Posted on November 11, 2014 by Bob Berwyn
Can walruses survive global warming and Arctic oil drilling? Photo courtesy NOAA.
Conservation groups challenge federal rules on ‘incidental take’
FRISCO — Conservation groups this week opened another front in their ongoing battle to block irresponsible fossil fuel exploitation in the Arctic. Represented by Earthjustice, wildlife advocates and Native Americans went to court to block a U.S. Fish and Wildlife Service rule that would allow oil companies to harm Pacific walruses.
According to the lawsuit, the rule puts the at-risk mammals under more environmental pressure by allowing drilling in key walrus foraging areas in the Chukchi Sea, where walruses depend on the ice for resting, raising their young, feeding, and avoiding predators. Continue reading
Filed under: biodiversity, endangered species, energy, Environment, gas drilling, oil drilling | Tagged: Arctic oil drilling, biodiversity, Environment, walruses | Leave a comment »
Posted on November 25, 2012 by Bob Berwyn
A Walrus in the Chukchi Sea during a tagging survey onboard the Norseman II in June 2010. Photo courtesy Sarah Sonsthagen , U.S. Geological Survey.
New study a first step in understanding long-term impacts to walrus populations
By Summit Voice
SUMMIT COUNTY — Scientists with the U.S. Geological Survey say walruses in the Arctic are responding to shrinking summer sea ice by arriving earlier at their northern feeding grounds on the broad continental shelf of the Chukchi Sea.
When the sea ice over the continental shelf melts completely in the fall, they “hauled out” onshore in large aggregations and foraged for food closer to shore. Hauling out refers to the behavior associated with seals and walruses of temporarily leaving the water for sites on land or ice, according to the study published in the journal Marine Ecology.
The researchers said they’re not exactly sure how this may affect walrus populations in the long run, however it is known that immature walruses are more susceptible to mortality from trampling onshore, Additionally, hauling out onshore and using nearshore feeding areas may require more energy. Continue reading
Filed under: biodiversity, climate and weather, Environment, global warming, Marine biology, ocean conservation | Tagged: Arctic sea ice extent, climate, global warming, USGS, walruses | Leave a comment »