News tagged with overfishing
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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Japan researchers collect wild eel eggs for first time
Japanese researchers have collected eel eggs from the wild for the first time ever, shedding light on the mystery surrounding the spawning habits of the fish.
Feb 02, 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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Russian scientists in quest to find elusive white orca
A team of Russian scientists say they will embark on a quest next week to observe the only all-white, adult killer whale ever spotted -- a majestic and elusive bull they have named Iceberg.
Apr 23, 2012 |
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Law that regulates shark fishery is too liberal: study
Shark fins are worth more than other parts of the shark and are often removed from the body, which gets thrown back into the sea. To curtail this wasteful practice, many countries allow the fins to be landed ...
Mar 02, 2012 |
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Titanium dioxide film enhances the sun's natural disinfection power
The world population is estimated to be seven billion and all these mouths need feeding. With fears about overfishing and the sustainability of fish stocks in our seas fish farming is becoming big business. As with all farming ...
Jan 12, 2012 |
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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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Crabs put the pinch on marshlands
If you take a quick glance at the marsh next to Saquatucket Harbor in Harwich Port, Mass., you will notice right away that some of the grass is missing. The cordgrass there, and all around Cape Cod, has been slowly disappearing ...
Sep 27, 2011 |
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Can we bring the grayling back to Michigan?
(PhysOrg.com) -- Overfishing and destruction of its habitat have driven the Arctic grayling from its native Upper Michigan waters. But Michigan Technological University biologists Nancy Auer and Casey Huckins ...
Aug 16, 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 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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Modern fish communities live fast and die young
Fish communities in the 21st Century live fast and die young. That's the main finding of a recent study by researchers from the Wildlife Conservation Society who compared fish recently caught in coastal Kenya ...
Jun 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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Madagascar marine resources plundered by international seafood markets
Fish catches in Madagascar over the last half-century are double the official reports, and much of that fish is being caught by unregulated traditional fishers or accessed cheaply by foreign fishing vessels. Seafood exports ...
Jun 17, 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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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.
