News tagged with fish populations
Related topics: fish
Some Canadian rivers at risk of drying up
(PhysOrg.com) -- Some Canadian rivers are at risk of drying up as impacts of climate change intersect with growing water demand from the country's cities, industries and agriculture, a new WWF report has found.
Oct 15, 2009 |
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Tropical regions to be hardest hit by fisheries shifts caused by climate change
Major shifts in fisheries distribution due to climate change will affect food security in tropical regions most adversely, according to a study led by the Sea Around Us Project at The University of British Columbia.
Oct 08, 2009 |
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Could stressed out sharks save more fish? (w/ Video)
(PhysOrg.com) -- Marine biology graduate student Austin Gallagher has studied the dwindling shark population around the world—from the waters of the South Pacific to those off Southern California.
Oct 02, 2009 |
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Changing the course of nature: Are fisheries directing the evolution of fish populations?
For many of the types of fish we buy in stores or order in restaurants, the chance that an individual dies from fishing is several times higher than dying of natural causes. This may seem obvious to most (they had to get ...
Sep 10, 2009 |
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Study: Loggerhead turtles put at risk by fishing
(AP) -- It's a scene that scientists say is all too common: A commercial fishing boat pulls in a net full of shrimp or tuna and finds a loggerhead sea turtle mixed in with the catch.
Sep 03, 2009 |
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To manage a fishery, you must know how the fish die
Recreational anglers and commercial fishermen understand you need good fishery management to make sure there will be healthy populations of fish for generations to come. And making good management decisions ...
Aug 10, 2009 |
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Sick fish may get sicker: Climate change and other stresses expected to affect entire populations of fish
Entire populations of North American fish already are being affected by several emerging diseases, a problem that threatens to increase in the future with climate change and other stresses on aquatic ecosystems, according ...
Aug 03, 2009 |
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Big Advantage for the Small -- Climate change influences the size of marine organisms
The ice is melting, the sea level is rising and species are conquering new habitats. The warming of the world climate has many consequences. In the current issue of the renowned journal 'Proceedings of the ...
Jul 23, 2009 |
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The value of variation: Ecologists consider the causes and consequences
Consider the case of the three-spine stickleback. These tiny fish that thrive in oceans and in fresh water might appear to be the same, yet ecologists are finding that they are actually a diverse collection of very specialized ...
Jul 22, 2009 |
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Overfishing and evolution
Using snorkelers and SCUBA divers is not the best way to monitor fish populations, if we want to know the evolutionary effects of overfishing.
Jul 20, 2009 |
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Seaway's 50th anniversary soiled by invasive species
Fifty years ago Friday, President Dwight Eisenhower and Britain's Queen Elizabeth II walked down a red carpet, climbed aboard a "floating palace" of a yacht named Britannia and ceremoniously sailed through the St. Lambert ...
Jun 26, 2009 |
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Did the North Atlantic fisheries collapse due to fisheries-induced evolution?
The Atlantic cod has, for many centuries, sustained major fisheries on both sides of the Atlantic. However, the North American fisheries have now largely collapsed. A new paper in the open-access, peer-reviewed journal PLoS ON ...
May 27, 2009 |
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Study reveals 'sobering' decline of Caribbean's big fish, fisheries
Sharks, barracuda and other large predatory fishes disappear on Caribbean coral reefs as human populations rise, endangering the region's marine food web and ultimately its reefs and fisheries, according to ...
May 06, 2009 |
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Biologists use DNA to study migration of threatened whale sharks
giants of the fish world that strike terror only among tiny creatures like the plankton and krill they eat -- are imperiled by over-fishing of the species in parts of its ocean range.
Apr 07, 2009 |
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Study assesses impact of fish stocking on aquatic insects
The impact fish stocking has on aquatic insects in mountain lakes can be rapidly reversed by removing non-native trout, according to a study completed by U.S. Forest Service and University of California, Davis, scientists.
Mar 26, 2009 |
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