ApocaDocuments (4) matching "overfishing" from this week
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Sun, Jan 9, 2011
from AP, via Google:
Is overfishing ended? Top US scientist says yes
For the first time in at least a century, U.S. fishermen won't take too much of any species from the sea, one of the nation's top fishery scientists says.
The projected end of overfishing comes during a turbulent fishing year that's seen New England fishermen switch to a radically new management system. But scientist Steve Murawski said that for the first time in written fishing history, which goes back to 1900, "As far as we know, we've hit the right levels, which is a milestone."
"And this isn't just a decadal milestone, this is a century phenomenon," said Murawski, who retired last week as chief scientist at the National Oceanic and Atmospheric Administration's Fisheries Service.... Murawski said the U.S. is the only country that has a law that defines overfishing and requires its fishermen not to engage in it.
"When you compare the United States with the European Union, with Asian countries, et cetera, we are the only industrialized fishing nation who actually has succeeded in ending overfishing," he said.... The science is far from perfect, Marciano said. Regulators believed fishermen were overfishing pollock until new data last year indicated scientists had badly underestimated its population, he said. And some stocks, such as Gulf of Maine cod, have recovered even when fishermen were technically overfishing them.
"To say you can't rebuild stocks while overfishing is occurring is an outright lie. We did it," Marciano said. ...
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You say you believe that science-based regulations made a difference -- but you're a fish!
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Thu, Jan 6, 2011
from Guardian:
Sustainable fish customers 'duped' by Marine Stewardship Council
The body which certifies that fish have been caught sustainably has been accused of "duping" consumers by giving its eco-label to fisheries where stocks are tumbling.
The Marine Stewardship Council (MSC) manages the labelling system that tells consumers which species of fish they can buy safe in the knowledge they aren't destroying stocks.
It recently celebrated the 100th award of its eco-label - to the Barents Sea cod fishery - but a series of decisions allowing controversial fisheries to be granted the prized MSC label has prompted severe criticism of the organisation....
Among the most controversial rulings is the award of an MSC label to the Ross Sea Antarctic toothfish fishery which is still regarded by scientists and the industry as an exploratory fishery. The species is so little understood that researchers still do not know even basics such as where the fish spawns.
Others include krill in the Antarctic, tuna and swordfish off the US coast, pollock in the Eastern Bering Sea where stock levels fell 64 percent between 2004 and 2009, and Pacific hake which suffered an 89 percent fall in biomass since 1989. ...
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How will we know how much there was, if we don't use it up? Hunh?
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Wed, Jan 5, 2011
from BBC:
Bluefin tuna sets new price record in Japan
A tuna has sold at auction for a record 32.49m yen in Tokyo, nearly $400,000... The fish was a blue fin, a variety prized for making the finest sushi. It was bought by a joint Japanese and Chinese bid.
The first auction in January at Tokyo's Tsukji fish market is a cherished part of Japan's New Year celebrations, and record prices are often set.
Japan is the world's biggest consumer of seafood.
After bells rang at 0500 local time (2000 GMT on Tuesday) to start the sale, bidding was brisk.... Traders at Tsukiji market say growing Chinese demand for sushi is also helping to push up prices. ...
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The inexorable law of supply and consume in action. Wait, is that it?
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Tue, Jan 4, 2011
from Aquatic Toxicology:
The effect of carbon dioxide on growth of juvenile Atlantic cod Gadus morhua L.
All water quality parameters were within the range of what might normally be considered acceptable for good growth, including the CO2 levels tested. Weight gain, growth rate and condition factor were substantially reduced with increasing CO2 dosage. The size-specific growth trajectories of fish reared under the medium and high CO2 treatments were approximately 2.5 and 7.5 times lower (respectively) than that of fish in the low treatment. Size variance and mortality rate was not significantly different amongst treatments, indicating that there was no differential size mortality due the effects of hypercapnia, and the CO2 levels tested were within the adaptive capacity of the fish. In addition, an analysis was carried out of the test CO2 concentrations reported in three other long-term hypercapnia experiments using marine fish species. The test concentrations were recalculated from the reported carbonate chemistry conditions, and indicated that the CO2 concentration effect threshold may have been overestimated in two of these studies. Our study suggests that juvenile Atlantic cod are more susceptible to the chronic effects of environmental hypercapnia than other marine fish examined to date. ...
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So we didn't overfish the Atlantic cod. They just got smaller and smaller and smaller...
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