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What A Week It Was: Apocadocuments from
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ApocaDocuments (3) matching "overfishing" from this week
[see full week] ~ [see all stories tagged "overfishing"]
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Sun, Feb 15, 2009
from Stanford University, via EurekAlert:
When fish farms are built along the coast, where does the waste go?
All those fish penned up together consume massive amounts of commercial feed, some of which drifts off uneaten in the currents. And the crowded fish, naturally, defecate and urinate by the tens of thousands, creating yet another unpleasant waste stream.
The wastes can carry disease, causing damage directly. Or the phosphate and nitrates in the mix may feed an algae bloom that sucks the oxygen from the water, leaving it uninhabitable, a phenomenon long associated with fertilizer runoff. It has been widely assumed that the effluent from pens would be benignly diluted by the sea if the pens were kept a reasonable distance from shore, said Jeffrey Koseff, a professor of civil and environmental engineering and co-director of Stanford's Woods Institute for the Environment. But early results from a new Stanford computer simulation based on sophisticated fluid dynamics show that the icky stuff from the pens will travel farther, and in higher concentrations, than had been generally assumed, Koseff said. ...
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"It has been widely assumed" that such assumptions are asstupid.
ApocaDoc
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Sun, Feb 15, 2009
from Desdemona Despair:
Greenland fishing villages abandoned as fish are driven to colder water
Coastal fishing villages such as Ikateq used to be home to families who relied on regular catches of Arctic char, a fish closely related to salmon. But warmer ocean temperatures in recent years have forced the char to migrate north to cooler waters, ending a way of life.
Traditional villages are now ghost towns, with dogsleds and fish-drying racks lying unused outside abandoned houses.
With no way to support themselves, villagers have been forced to move to urban centres the largest city and capital, Nuuk, has a population of about 15,000. Ms Smirk says most of the displaced have no other way to earn a living and rely on social welfare. ...
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The folks in Newfoundland learned these lessons after the Atlantic Cod were wiped out by overfishing, twenty years ago. Do we need a Northern Union of Concerned Humans, or something?
ApocaDoc
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Fri, Feb 13, 2009
from BBC:
Bleak forecast on fishery stocks
The world's fish stocks will soon suffer major upheaval due to climate change, scientists have warned.
Changing ocean temperatures and currents will force thousands of species to migrate polewards, including cod, herring, plaice and prawns.
By 2050, US fishermen may see a 50 percent reduction in Atlantic cod populations.... "The impact of climate change on marine biodiversity and fisheries is going to be huge," said lead author Dr William Cheung, of the University of East Anglia in the UK.
"We must act now to adapt our fisheries management and conservation policies to minimise harm to marine life and to our society." ...
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The fish have ... gone fishin'...
ApocaDoc
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