Tag: "stocks" at biology news

April GEOLOGY and GSA TODAY media highlights

...orphyritic intrusions that are apophyses to larger stocks that have been water saturated within the upper several kilometers of the crust. The intrusions form huge hydrothermal systems of exsolved magmatic fluids with a carapace of convectively circulating meteoric water. They are important not only because...

Fisheries forecasting in the Niger inner delta

...gement of fishing zones requires assessment of the stocks potentially available as early as possible into th...ong enough to allow renewal, the following seasons stocks will be depleted and the catches poorer. This new forecasting model has proved to be extremely usefu...

Sturgeon researcher's vision spawns thriving industry

...r meat and caviar may relieve the pressure on wild stocks of the endangered fish. The United Nations recently lifted a ban on exports of "wild" caviar from the Russia, Iran and other countries around the Caspian Sea, after they agreed on lower quotas and a plan to conserve the fish. Doroshov joined UC Davi...

Military technologies and increased fishing effort leave no place for fish to hide

...of Science (AAAS) in Boston. Faced with dwindling stocks and rising demand for seafood, fishers are employi...f creating natural refuges for sustaining breeding stocks increases. When there is no place for fish to hide, we can devastate entire populations. There is ev...

Still waters? 'Clear-cutting' robs the deep-sea of ancient treasures

...d in 60 tons of orange roughy in the 1980s. Today, stocks have been reduced to less than 20 percent of their...ow seas," he said. "We must consider deep-sea fish stocks as nonrenewable resources." In his Science paper, Roberts urges conservation targeting 10 marine bio...

New solutions needed for extinction prevention and for sustainable management of marine resources

...f no-fishing zones. In these protected areas, fish stocks can recuperate and refill harvest zones through spillover. For a sustainable harvest aimed at maximizing long-term welfare of the fishery, at least one-third of the fish habitat has to be protected, Roughgardens model demonstrates. Smaller habitat si...

Story tips from the Department of Energy's Oak Ridge National Laboratory, January 2002

...chers were able to develop a way to transfer mouse stocks via embryo. Researchers could not simply send exis...m also will ensure the efficient transfer of mouse stocks into the new pathogen-free mouse facility being built at ORNL. The current Mouse House is home to so...

USDA establishes Honeybee Genetics and IPM Center

...r will emphasize the development of mite-resistant stocks of honeybees. The breeding program will be the first to use honeybees to integrate traditional animal-breeding methods with modern molecular technologies. Calderone says there will be an emphasis on identification and the use of molecular markers fo...

Virginia Tech researchers join NSF Arabidopsis 2010 Project; may help produce plants that defend themselves without pesticides

...nts that can be used as a source of sugar for food stocks or for the production of alcohol. "NSF is excited to begin this important endeavor of understanding the functions of each gene in Arabidopsis," said NSF director Rita Colwell. "While the task is daunting, it is also essential to this growing area of...

Small bone could solve bluefin mystery

...of the Gulf bluefin and the Mediterranean bluefin, stocks present off the U.S. may be strongly influenced by fishing activities in the Mediterranean," he adds. "What tuna fishermen in the U.S. seem to think is that the bluefin is being highly overfished in the Mediterranean, and this study should give us ...

Purple potato boost for organic food industry

...wn potatoes. There is little choice of variety and stocks frequently run out, said Professor Leifert, adding that it was too early to say whether prices might come down. The potato trials at Close House research station, near the village of Heddon-on-the-Wall (by coincidence the origin of Britains foot-and-...

Electronic tags reveal transatlantic migrations and breeding grounds of Atlantic bluefin tuna

...eding grounds are apparent, suggesting a mixing of stocks on feeding grounds and a separation to distinct breeding localities. Future assessment of stock status should evaluate the new information and reassess the management strategies applied to Atlantic bluefin tuna." "From the data, its clear there are t...

Excessive fishing prompted coastal ecosystems to collapse, but wise management now will help

...imistic estimates of the global percentage of fish stocks that are overfished are almost certainly too low, the scientists said. Odds are good that that many more marine ecosystems could collapse soon. "Place names for oysters, pearls and conches conjure up other ecological ghosts of marine invertebrates t...

Using hard science to protect fragile seas

...s that 30 percent of international commercial fish stocks have been depleted below the point where they will...In the United States, 80 percent of 191 commercial stocks are believed to be fully exploited or overfished, according to the NRC. Micheli has documented the ...

Scientists using earstones to identify red drum nursery grounds

...technique to identify the source of adult red drum stocks in Texas." If the project can identify the major sources of red drum, he said, then that information will let fishery managers know which nursery grounds need to be protected. "If we can understand what areas are important nursery grounds - from a ma...

Tips from the journals of the American Society for Microbiology: February 2001

...apeake Bay suffered a collapse of some of its fish stocks including the striped bass. Restrictions on fishing activity improved the fish populations in the early 1990s, but by the end of the decade there was again a noticeable decline in the striped bass population. After closely monitoring the health of...

Scientists see early indications of lobster decline

...vidence that the reproductive potential of lobster stocks is currently high. The scientists say, however,...o discuss the most appropriate actions so that the stocks and the fishermen both survive the fluctuations inherent in nature." This is the first scientific p...

Biological warfare: an emerging threat in the 21st century

...he disease has been eliminated in the wild, frozen stocks of smallpox virus are still maintained by the governments of the United States and Russia. If rogue politicians or terrorists were to get hold of the remaining supplies, ``the consequences could be disastrous,`` he warns. But Block is haunted by more...

Faulty practices threaten condor program

...ared birds into developed areas. "Mixing the two stocks in the wild has resulted in the transfer of bad habits from the puppet-reared to the parent-reared birds," Meretsky said. "All misbehaving birds in the wild should be re-trapped and returned to captivity, since they pose a risk of passing on their ba...

Do fish farms really add to the world's supply of fish?

...contributing factor - to the collapse of fisheries stocks around the world." Carnivorous fish "The industry...culture industry cannot continue to rely on finite stocks of wild-caught fish, a number of which are already classified as fully exploited, overexploited or d...

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