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What A Week It Was: Apocadocuments from
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ApocaDocuments (4) matching "ecosystem interrelationships" from this week
[see full week] ~ [see all stories tagged "ecosystem interrelationships"]
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Sat, Mar 5, 2011
from LiveScience:
Arctic's Spring Phytoplankton Blooms Arrive Earlier
When summer comes to the Arctic, the tiny plants that feed the ocean's food chain form green blooms in the water. In some Arctic waters, the peak of this bloom has been arriving earlier every year since 1997, a study has found.
These areas, where peak bloom time is creeping up, are roughly the same as those with decreasing sea ice in June, according to the researchers....
In some areas, the change was quite dramatic. For example, in the Baffin Sea, southwest of Greenland, the peak bloom moved from September to early July.
Phytoplankton is crucial to the marine ecosystem, because it forms the base of the food chain. The creatures that eat the tiny plants, including fish and tiny animals called zooplankton, have adapted to make the most of these blooms.
It's not clear if they are able to sync up with the earlier blooms and avoid disruptions to critical life stages, such as egg hatching and larvae development, according to lead study author Mati Kahru, a research oceanographer in the Integrative Oceanography Division at the Scripps Institution of Oceanography in California. ...
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The early fish gets the phytoplankton!
ApocaDoc
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Wed, Mar 2, 2011
from Asheville (NC) Citizen-Times:
White-nose syndrome shows up in Yancey County
Biologists have confirmed white-nose syndrome at a third site in North Carolina, meaning two counties are now positive for the disease that has killed hundreds of thousands of bats in the Eastern United States.
The disease was confirmed last week in Yancey County. It was previously discovered in a retired Avery County Mine and in a cave at Grandfather Mountain State Park. While the news last week that a deadly bat disease had arrived in North Carolina was tragic, it did not come as a surprise to biologists....
"We knew that white-nose syndrome was coming and began preparing for its arrival, but we have a lot of work to do to address the impact of this disease on bats and our natural systems" said Chris McGrath, Wildlife Diversity Program Coordinator in the Commission's Wildlife Management Division.
"We and our conservation partners must focus resources upon collaborative efforts, including monitoring the spread of the disease, understanding how the potential loss of a significant proportion of bats will affect the balance of nature and our lives, and finding ways to combat those effects." ...
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Another cave done gone.
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Mon, Feb 28, 2011
from London Daily Mail:
Water demand will 'outstrip supply by 40 percent within 20 years' due to climate change and population growth
Water demand in many countries will exceed supply by 40 per cent within 20 years due to the combined threat of climate change and population growth, scientists have warned.
A new way of thinking about water is needed as looming shortages threaten communities, agriculture and industry, experts said.
In the next two decades, a third of humanity will have only half the water required to meet basic needs, said researchers. Agriculture, which soaks up 71 per cent of water supplies, is also likely to suffer, affecting food production.
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That's why I'm sticking with my Diet Coke.
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Mon, Feb 28, 2011
from The Bay View Compass:
Female mice disabled by parents'pesticide intake
A white mouse is placed in the center of a maze. She is hungry because she hasn't eaten all night. As soon as the gate is raised she takes off in search of her breakfast, scurrying down the channels. She quickly realizes that turning left at every point in the maze gets her food.
A few minutes later, a second mouse is set down in the center of the maze. She looks the same as the first mouse, but when the gate is raised she just sits there and seems afraid to move. Slowly and hesitantly she starts moving and eventually finds a piece of food. She continues slowly down the maze but doesn't seem to have learned or remember that taking left turns leads to food. You might call her a slow learner.... Why is it hard for the second mouse to learn? Three months earlier when she was growing in her mother's womb, her mother was exposed to a pesticide called chlorpyrifos at levels comparable to what humans encounter in the environment. ...
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Is this why I can't find my way out of my garage most mornings?
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