Tag: "stocks" at biology news

DuPont and NREL to develop world's first integrated 'bio-refinery'

...duce many of the transportation fuels and chemical stocks we require from domestically grown corn and energy crops, as well as agricultural and forestry residues." Operating like a conventional refinery, the ICBR will make use of the entire corn plant. Purified sugars from the corn kernel will be the prima...

New book says Northwest salmon could face same fate as those in Northeast, England

...e human population grew and rivers changed, salmon stocks began to dwindle. As the fish became scarcer they also became more valuable and so were caught in ever-increasing numbers. The book documents how that scenario has played out time after time. Previous policies have been established only with an eye ...

Salmon farms pose significant threat to salmon fisheries in the Pacific Northwest, researchers find

...rams. In British Columbia and Washington, low fish stocks and low prices have induced some boat owners to pa... and other pathogens have contaminated wild salmon stocks swimming nearby. "A more insidious ecological risk to wild salmon comes from the escape of farm fish...

Fe-TAML(R) activators developed at Carnegie Mellon break down toxic pesticides

...est available technology for decontaminating large stocks of expired pesticides around the world, according to Collins. The Collins group already has published extensively (see April 12, 2002 issue of Science ) on the use of very small concentrations of Fe-TAML activators and hydrogen peroxide to rapidly a...

Nurseries in the deep sea

... has expanded into the deep sea as near-shore fish stocks have declined. For this reason, Drazen suggests that reproductive hot spots such as this might qualify as areas to be protected from fishing. Finding one reproductive hot spot may also help scientists discover other such areas. But as Drazen points ...

Trawlers threaten ocean's biodiversity

...s, the researchers are warning that faltering fish stocks mean fishing fleets are heading into deeper waters in search of new catches. The boats are increasingly targeting pristine oceanic seamounts, home to highly marketable species such as orange roughy, alfonsino and deep-water redfish. Trawlers are ofte...

Lake ecosystem critical to East African food supply is threatened by climate change

...rming Lake Tanganyika's ecosystem, decreasing fish stocks by as much as 30 percent over the past 80 years. Lake Tanganyika is large and deep, filling the chasm of a riftvalley bordering the Democratic Republic of Congo, Tanzania,Zambia and Burundi. An ecosystem unto itself, the lake supports many types of ...

Whale populations are too low to resume commercial hunting, geneticists find

...ch found that approximately 90 percent the oceans' stocks of tuna, cod and other large predatory fish have been depleted by commercial fishing. Whales are also large predators, and their demise has had a significant impact on ocean ecosystems, observed marine biologist Boris Worm, co-author of the Nature st...

International meeting on the Southern Ocean

...change and the commercial exploitation of its fish stocks could result in major and potentially damaging changes. Unfortunately, our knowledge of the region is currently very limited, and a new international effort to change this is required." The meeting expects to agree international research programmes f...

Scientists say 'save our seas'

... to get worse due to increased storminess. Fish stocks in the North East Atlantic have declined during th...cade and ICES research has showed that, out of 113 stocks assessed in 2001, only 18 per cent were inside safe biological limits. Oil discharges from ships ...

Exclusive pre-BIO conference preview by president/media availability

...in biotech, from recent market interest in biotech stocks to bioethics issues to breakthrough discoveries in healthcare, food and agriculture and manufacturing with this science. He also talks about the current need for sensible access and government policy to provide new biotech drugs for seniors. Mr. Fe...

Nature cover story - Only 10% of all large fish are left in global ocean

...on the global community to restore world fisheries stocks to levels that can provide maximum sustainable yie...rly sensitive species." He further emphasizes, "If stocks were restored to higher abundance, we could get just as much fish out of the ocean by putting in onl...

Sex, flounder and donuts

...m members, notes that the production of all-female stocks will push the Southern flounder up a notch as a ca...al fishing. Reports of dwindling Southern flounder stocks by both national and state marine fisheries groups have resulted in more regulations - and less prof...

Smaller households fuel global housing boom and threaten biodiversity, study finds

...ty 'hotspot' countries, where extraordinarily rich stocks of native species are threatened by human activities.'' United Nations data In their study, the researchers analyzed demographic data compiled by the United Nations between 1985 and 2000. The data were obtained from 141 countries, 76 of which have ...

Reconstructing salmon populations

...ng growth with catch data to determine what salmon stocks looked like 200 years ago. Born in freshwater lakes and rivers, salmon swim to the ocean where they feed and mature. After a few years, they return to the river or lake of their birth to reproduce and die. As their bodies decay, they leave behind o...

Overfishing may diminish genetic diversity even when millions of fish remain

...in marine species, many other kinds of marine fish stocks may be in danger of losing genetic variability, the paper says. Fish scales collected and archived at the New Zealand Ministry of Fisheries provided DNA from two isolated populations of New Zealand snappers for the research. The smaller population fr...

North Atlantic swordfish stocks nearly recovered

...th, Dr. Babcock and other scientists evaluated the stocks again, and found that they were rebuilding much more rapidly than expected. The North Atlantic swordfish population is currently at 94 percent of the level at which "maximum sustainable yield" can be produced on a long-term basis. "If recent catch l...

New threat to commercial fishing

...rine species. Many fully exploited or over-fished stocks may be already suffering loss of diversity. "We don't know yet the minimal level of genetic diversity required to sustain a commercial fishery long-term, but there is enough evidence now to suggest we need to be cautious and begin to reassess our und...

Trees encroaching grasslands may lock up less carbon than predicted

... site," in Engeling, Tex. "Such shifts make carbon stocks more vulnerable to loss from fire, biomass (wood) harvesting and other disturbances."...

A fish-eye view of management through an evolutionary lens

... challenging balancing act between sustaining fish stocks worldwide and the importance of fishing to the global economy. "In New York State alone," says Jack Mattice, Director of New York Sea Grant, "the commercial fishing, recreational fishing, and the seafood industries make a $11.5 billion contribution ...

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