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What A Week It Was: Apocadocuments from
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ApocaDocuments (2) for the "Species Collapse" scenario from this week
[see full week] ~ [see full Species Collapse scenario and stories]
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Sun, May 8, 2011
from PNAS:
Tracking single coccolith dissolution with picogram resolution and implications for CO2 sequestration and ocean acidification
Currently, coccoliths serve as an important sink in the global carbon cycle, but decreasing ocean pH challenges their stability....
Even after 60 million years, the fossil coccolith crystals are still tiny..., compared with inorganically produced calcite, where one day old crystals can be 10 times larger, which raises the question if the biogenic nature of coccolith calcite gives it different properties than inorganic calcite? And if so, can these properties protect coccoliths in CO2 challenged oceans? Here we describe a new method for tracking dissolution of individual specimens, at picogram (10-12 g) resolution. The results show that the behavior of modern and fossil coccoliths is similar and both are more stable than inorganic calcite. Organic material associated with the biogenic calcite provides the explanation. However, ancient and modern coccoliths, that resist dissolution in Ca-free artificial seawater at pH > 8, all dissolve when pH is 7.8 or lower. Ocean pH is predicted to fall below 7.8 by the year 2100, in response to rising CO2 levels. Our results imply that at these conditions the advantages offered by the biogenic nature of calcite will disappear putting coccoliths on algae and in the calcareous bottom sediments at risk. ...
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Denier translation: the human-produced CO2 that's not causing global warming is also not causing the ocean to go acidic, and therefore poses no threat to the base of the ocean food chain, nor to the ocean's ability to absorb CO2.
ApocaDoc
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Mon, May 2, 2011
from NRDC Staff Blog:
Asian Carp have Spawned Water Ninjas on the Illinois River
It has come to this.
The Asian carp infestation in Peoria has some intrepid water skiers taking to the Illinois River in spiked body armor with wolverine claws and samurai swords to take the fight to the invasive species. This is not the most intense video of carp problems; it is the most intense video in response to the fish that I have seen...by a lot! Remember folks, these are...ummm...professionals, don't try this at home.... [see original for video]....
Thom Cmar popped into my office and said, "... so this is what recreation on our rivers looks like after the Asian carp apocalypse? If so, then I want to hang out with these guys. ...
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Invasive species -- as sport!
ApocaDoc
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