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What A Week It Was: Apocadocuments from
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ApocaDocuments (3) matching "invasive species" from this week
[see full week] ~ [see all stories tagged "invasive species"]
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Sun, Jul 11, 2010
from Associated Press:
Scientists roll out mats to kill Lake Tahoe clams
Scuba-diving scientists are unrolling long rubber mats across the bottom of Lake Tahoe coves in an attempt to quell a clam invasion that could cloud the world-reknown cobalt waters.
The half-acre mats are designed to smother dime-sized nonnative Asian clams that can reach populations of 5,000 per square yard.
Geoffrey Schladow, director of the Tahoe Environmental Research Center run by the University of California, Davis, said the clams promote so much algae growth that they can turn some coves from blue to green.
"They suck in the water and they filter out the algae. Their excretions are highly concentrated packages of nutrients," he said. ...
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Unwelcome mats make clams sad.
ApocaDoc
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Fri, Jul 9, 2010
from CBC:
Toxic, invasive weed hits southern Ontario
Biologists and health officials in southern Ontario are scrambling to contain an invasive plant that can cause blindness and severe burns.
Heracleum mantegazzianum, or giant hogweed, is a poisonous plant most recently found growing in Renfrew County, west of Ottawa.
"The concern is it's a very poisonous plant, in the sense that if you get any of the sap from this plant on your skin, it can cause severe blistering and very bad burns," said Jeff Muzzi, manager of forestry services for Renfrew County.
"If you should happen to get the sap in your eyes, it can blind you either temporarily or permanently."
"You might not even know it's here, [just] walk into it and happen to break a leaf. The next thing you know, you've got these nasty burns."
He said it can take up to 48 hours after exposure for symptoms to appear.
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I bet Polynesian Hogweed Toads love this stuff! Let's bring 'em in!
ApocaDoc
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Mon, Jul 5, 2010
from Environmental Health News:
Invasive "polluting plant" contributes to ozone levels
Kudzu - an invasive plant common in the southeastern United States - contributes to the production of ozone, and at its worst, may add as much as a week to the number of days when ozone levels exceed pollution limits in the region. Kudzu releases two key ingredients - nitric oxide and isoprene - that are important to making ozone, which is an air pollutant with known health effects. When researchers looked, kudzu-invaded areas had higher levels of nitric oxide compared to uninvaded areas... In areas of the country most vulnerable to changes in nitric oxide levels - Mississippi, Arkansas and Tennessee - the kudzu-related increase in ozone could add as many as seven additional high ozone episodes during the summer when ozone levels are highest. ...
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Before long... we'll all be living in the kudzone!
ApocaDoc
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