News tagged with overfishing
Scientists warn of massive ocean extinctions
When we think of mass extinctions, we think of the dinosaurs. Nothing that could happen in the modern era, right?
Jun 27, 2011 |
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Has overfishing ended? Top US scientist says yes
(AP) -- 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.
Jan 09, 2011 |
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World's coral reefs could be gone by 2050: study
The world's coral reefs could be wiped out by 2050 unless urgent action is taken to stop threats posed to the "rainforests of the sea" by everything from overfishing to climate change, a report warned.
Feb 23, 2011 |
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Panel: Problems with oceans multiplying, worsening
(AP) -- The health of the world's oceans is declining much faster than originally thought - under siege from pollution, overfishing and other man-made problems all at once - scientists say in a new report.
Jun 20, 2011 |
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NOAA designates critical habitat for black abalone
NOAA's Fisheries Service today filed with the Federal Register a final rule that identifies black abalone critical habitat along the California coast. In February 2009, black abalone was listed as endangered ...
Oct 26, 2011 |
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Ear bones reveal spawning secrets of Lake Erie walleye
Ecologists have long believed that fish tend to return to the same river where they hatched in order to spawn. But researchers at Ohio State University have determined that the old rule doesn't always apply ...
Jul 29, 2010 |
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Human impacts on the marine ecosystems of Antarctica
A team of scientists in the United Kingdom and the United States has warned that the native fauna and unique ecology of the Southern Ocean, the vast body of water that surrounds the Antarctic continent, is ...
Space & Earth / Earth Sciences
Mar 31, 2011 |
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Europe faces extinction of many species, EU says
(AP) -- The Iberian lynx that prowls the grasslands of southern Spain. The Mediterranean monk seal swimming waters off Greece and Turkey. The Bavarian pine vole that forages in the high meadows of the Alps.
May 16, 2011 |
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Shark guardians see momentum to save top predator
Shark defenders hope to capitalize on a series of victories in their fight against the lucrative fin trade, releasing a report Monday calling for sanctuaries to save the world's oldest predator.
Jun 06, 2011 |
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Cod resurgence in Canadian waters
Cod and other groundfish populations off the east coast of Canada are showing signs of recovery more than 20 years after the fisheries collapsed in the early 1990s, according to research published today in ...
Jul 27, 2011 |
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Scientists boost endangered freshwater mussels population
The endangered freshwater mussel species has been given a welcome boost by scientists from Queen's University Belfast following a 12 year cultivation project.
Mar 23, 2010 |
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Shame and honor increase cooperation
Honour and shame work equally well in encouraging social cooperation, according to a new study by researchers at the University of British Columbia and the Germany's Max Planck Institute for Evolutionary Biology.
Other Sciences / Social Sciences
Jun 01, 2011 |
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Distressed damsels stress coral reefs
Damselfish are killing head corals and adding stress to Caribbean coral reefs, which are already in desperately poor condition from global climate change, coral diseases, hurricanes, pollution, and overfishing. Restoring ...
May 26, 2010 |
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Ocean health plays vital role in coral reef recovery, study shows
The new research study led by scientists at Scripps Institution of Oceanography at UC San Diego suggests that by improving overall ocean health, corals are better able to recover from bleaching events, which ...
Jul 22, 2009 |
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West Coast fishermen embark on new wave of fishing
(AP) -- The West Coast groundfish fleet has struggled to stay afloat during major cutbacks to reverse long-standing problems with overfishing and to protect the seafloor from damage caused by bottom trawling ...
Sep 06, 2009 |
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Overfishing
Overfishing occurs when fishing activities reduce fish stocks below an acceptable level. This can occur in any body of water from a pond to the oceans.
Ultimately overfishing can lead to resource depletion in cases of subsidised fishing, low biological growth rates and critical low biomass levels (e.g. by critical depensation growth properties). For example, overfishing of sharks has led to the upset of entire marine ecosystems.
The ability of a fishery to recover after overfishing depends on whether the ecosystem conditions are suitable for the recovery. Dramatic changes in species composition can result in an ecosystem shift, where other equilibrium energy flows involve species compositions other than those that had been present before. For example, once trout have been overfished, carp might take over in a way that makes it impossible for the trout to re-establish a breeding population.
For more information about Overfishing, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
