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What A Week It Was: Apocadocuments from
View By Scenario:
Species Collapse:(4)
Plague/Virus:(2)
Climate Chaos:(8)
Resource Depletion: (7)
Biology Breach:(9)
Recovery:(9)
This Week's Top Ten Very Scary Tags:
toxic water  ~ endocrine disruptor  ~ plastic problems  ~ ocean acidification  ~ marine mammals  ~ efficiency increase  ~ faster than expected  ~ ecosystem interrelationships  ~ overfishing  ~ topsoil depletion  ~ endangered list  



ApocaDocuments (2) matching "marine mammals" from this week
[see full week] ~ [see all stories tagged "marine mammals"]
Fri, Oct 3, 2008
from Ecology Society of America, via EurekAlert:
Decline in Alaskan sea otters affects bald eagles' diet
Sea otters are known as a keystone species, filling such an important niche in ocean communities that without them, entire ecosystems can collapse.... [S]ea otters can have even farther-reaching effects that extend to terrestrial communities and alter the behavior of another top predator: the bald eagle. In nearshore marine communities, towering kelp can reach heights of 250 feet and function much like trees in a forest, providing food, homes and protection for fish and invertebrates. The most important enemies of these giant algae are tiny sea urchins, only inches in diameter, which live on the kelp's holdfasts and eat its tissue. When urchin populations become too large, they can defoliate entire kelp forests, leaving only barren remains.... Otters can eat the spiky urchins whole, making them the major urchin predator. The otters' presence keeps urchin populations in check and maintains the balance of the ecosystem.... The results are the first to show that the presence or absence of otters influences a terrestrial animal, and that the complex food web linkages can reach as far as five different food chain levels: from sea otters to sea urchins, kelp, marine fish and finally bald eagles. ...


Our country's symbol is at risk? TO THE BARRICADES!

ApocaDoc
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Wed, Oct 1, 2008
from Science:
Acidic Oceans Getting Noisy, Too
The ocean is becoming a noisier place. As seawater turns more acidic, due to absorption of carbon dioxide (CO2) building up in the atmosphere, it allows sound waves to travel farther, according to new research. That's potentially bad news for a host of marine animals, including whales and dolphins, that rely on sound for hunting and communication--and that are easily stressed by background noise from ship traffic and military sonar. ...


Thank goodness we can all rely on our iPods to drown it out.

ApocaDoc
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