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What A Week It Was: Apocadocuments from
View By Scenario:
Species Collapse:(1)
Plague/Virus:(3)
Climate Chaos:(8)
Resource Depletion: (4)
Biology Breach:(12)
Recovery:(6)
This Week's Top Ten Very Scary Tags:
contamination  ~ health impacts  ~ climate impacts  ~ toxic buildup  ~ anthropogenic change  ~ unintended consequences  ~ global warming  ~ invasive species  ~ antibiotic resistance  ~ efficiency increase  ~ ecosystem interrelationships  



ApocaDocuments (4) matching "invasive species" from this week
[see full week] ~ [see all stories tagged "invasive species"]
Sun, Apr 18, 2010
from TrueSlant:
A Dying African Lake, Polluted, Overfished; Bad And Getting Worse
It was shortly after daybreak and a long, wooden fishing skiff crunched up on the stony beach here along Lake Victoria. Women who sell fish in the market in nearby Kisumu swarmed the boat. They grabbed slippery Nile perch and tilapia and tossed them into their plastic baskets. Then they began haggling. The catch that day was meager, and one woman came away with nothing. "The fishermen don't get enough fish," said Salin Atieno, 37. She has been buying fish at the Dunga landing for seven years. "There are not that many fish now." Lake Victoria, one of the largest fresh water lakes in the world, is suffering. It is polluted with raw sewage and it is muddy from the erosion of soil from nearby hills that have lost trees and shrubs to people in search of firewood. Like Lake Chad in West Africa and a few other lakes around the world, it has also been shrinking. Parts of Lake Victoria are clogged with hyacinths and algae. All of this has been thinning out the fish. "The lake is dying," said Dr. Raphael Kapiyo, the head of environmental studies at Maseno University in Kisumu, an East African trading post of a city with about 400,000 people. ...


Can we introduce some more invasive species? Ones that eat raw sewage, water hyacinth, and algae?

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Thu, Apr 15, 2010
from USDA/Agricultural Research Service via ScienceDaily:
Geraniums Could Help Control Devastating Japanese Beetle
Geraniums may hold the key to controlling the devastating Japanese beetle, which feeds on nearly 300 plant species and costs the ornamental plant industry $450 million in damage each year, according to scientists with the Agricultural Research Service (ARS). The beetle, Popillia japonica Newman, can feast on a wide variety of plants, including ornamentals, soybean, maize, fruits and vegetables. But within 30 minutes of consuming geranium petals, the beetle rolls over on its back, its legs and antennae slowly twitch, and it remains paralyzed for several hours. The beetles typically recover within 24 hours when paralyzed under laboratory conditions, but they often succumb to death under field conditions after predators spot and devour the beetles while they are helpless. ...


Those must be Geronimo geraniums!

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Wed, Apr 14, 2010
from University of Washington via ScienceDaily:
Traumatized Trees: Bug Them Enough, They Get Fired Up
Whether forests are dying back, or just drying out, projections for warming show the Pacific Northwest is becoming primed for more wildfires. The area burned by fire each year is expected to double -- or even triple -- if temperatures increase by about 3.5 degrees Fahrenheit (2 C) in our region, according to University of Washington and USDA Forest Service research... "The difference between now and our prior history is the magnitude of the impact," said Elaine Oneil, UW research associate in forest resources. "We basically have massive bark beetle outbreaks in the western U.S. and Canada over the entire extent of pines that are susceptible. We're seeing these massive mortality events of millions and millions of acres." ...


The trees' trauma may include grief for fallen comrades.

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Mon, Apr 12, 2010
from Michigan Public Radio:
Invasive Species and PCBs
New University of Michigan research finds invasive species are accelerating PCBs up the food chain. Recent dredging of the Saginaw River was intended to remove PCB contaminated soil. U of M fishery biologist David Jude says tests indicate the dredging worked. But he says walleyes are showing signs of increased PCB contamination. Jude traces the problem to two invasive species, zebra mussels and round gobies. "Zebra mussels filter a liter of water a day. They are removing a large amount of the algae out of that water," says Jude, "and as a result of that they are picking up a lot higher concentration of PCBs. There are some really outrageous high concentrations of PCBs in zebra mussels in the Saginaw River." Jude says as other aquatic life eats the invasive mussels, the PCBs move up the food chain. ...


Can we just call it unintended bioremediation?

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