New study finds that the nutritional value of prey within a single species can widely vary, offering key insights for food web dynamics and ecosystem change The hunt is on and a predator finally zeroes in on its prey. The animal consumes the nutritious meal and moves on to forage for its next target. But how much prey does a predator need to consume? Following a period of massive starvation among animals living along the California coast, University of California…
Scientists in the Virginia-Maryland Regional College of Veterinary Medicine (VMRCVM) at Virginia Tech are trying to clone cattle that are genetically incapable of developing “Mad Cow Disease.”
As federal and state government officials grapple with strategies to limit the economic and health risks associated with the troublesome discovery of the nation’s first case of Bovine Spongiform Encephalopathy (BSE) – or “Mad Cow Disease”– Will Eyestone, research associate professor in Large Animal
Sea water being churned in the ocean off Antarctica may be having a greater effect on global patterns of ocean movement than previously thought, according to new research reported in this week’s edition of the international journal Science (9 January 2004).
The research, lead by scientists from the University of East Anglia (UEA), shows that “remarkably intense and widespread” mixing of water in the Southern Ocean occurs over large regions where the ocean bed is rough.
The main aut
Researchers at Queen’s University Belfast will be helping to develop the automotive engines of the future, thanks to a new £1 million facility which opens on Friday.
Work in the Engine Test Laboratories will include developing and improving engines for better fuel economy and reducing harmful exhaust emissions which contribute to global warming.
The new facility is part of the University’s world class Virtual Engineering Centre (VEC), which carries out cutting edge research focusing
Eating salmon may pose health risks
A study of more than two metric tons of North American, South American and European salmon has shown that PCBs and other environmental toxins are present at higher levels in farm-raised salmon than in their wild counterparts.
Researchers at Indiana University and five other research centers say increased toxin levels in farm-raised salmon may pose health risks to people who eat the economically important fish. Their study, which appears in
Less than five years after being removed from the endangered species list, peregrine falcons could be facing a new threat. A Swedish study found that eggs of peregrine falcons in that country contain high levels of a popular flame retardant, deca-BDE, which scientists have long thought could not get into wildlife. Falcons in North America are likely to face the same threat, the researchers say.
The birds eggs contained some of the highest levels of BDEs (brominated diphenyl ethers) ev
Climate change could drive more than a quarter of land animals and plants into extinction, according to a major new study published in tomorrow’s edition of the journal Nature
The study estimates that climate change projected to take place between now and the year 2050 will place 15 to 37 percent of all species in several biodiversity-rich regions at risk of extinction. The scientists believe there is a high likelihood of extinctions due to climate change in other regions, as well.
Big ideas for reducing the impacts of climate change are being evaluated by an international line-up of leading scientists from the US, mainland Europe and the UK at a symposium in Cambridge this week. The scientists are coming together to evaluate which large-scale bio-engineering, geo-engineering and chemical engineering ideas to combat global warming are worthy of further investigation, and which are best left on the drawing board. The meeting is being jointly hosted by the Tyndall Centre for Clim
New Caledonia harbours 45% of species of the family Araucariaceae, belonging to the conifers, recorded in the world, divided between the two genera Araucaria (columnar pines) and Agathis (kaoris). These species are valuable for their ecological, economic and heritage interest, but some are under threat. IRD botanists, who have been studying the flora of New Caledonia for many years, jointly with the Natural Resources Department of the Southern Province of New Caledonia, have just published the first
New study suggests El Niño-related fires may be significant source of greenhouse gases
In 1997-98, while California was ravaged by rainfall in one of the strongest El Niños of the last century, several other regions of the Earth suffered severe droughts, which led to large-scale fires.
James Randerson, assistant professor of Earth system science at UC Irvine, and colleagues report that by combining satellite data and measurements of atmospheric gases, they have quantified fo
Designing underground fuel tanks that dont leak rather than replacing MTBE with alternative fuel additives could be a better way to prevent groundwater contamination, according to new research that will appear in the Jan. 1 issue of Environmental Science & Technology, a peer-reviewed journal of the American Chemical Society, the worlds largest scientific society.
The study, which involved more than 850 leaking underground fuel tanks in the Los Angeles area, suggests that expande
Study raises questions about potential impact of climate change
A study has shown that marine life around the world is surprisingly dependent on a single ocean circulation pattern in the Southern Hemisphere where nutrient-rich water rises from the deep and spreads across the seas.
The results suggest that ocean life may be more sensitive to climate change than previously believed because most global warming predictions indicate that major ocean circulation patterns will cha
A team of scientists has discovered bacteria in a hole drilled more than 4,000 feet deep in volcanic rock on the island of Hawaii near Hilo, in an environment they say could be analogous to conditions on Mars and other planets.
Bacteria are being discovered in some of Earths most inhospitable places, from miles below the oceans surface to deep within Arctic glaciers. The latest discovery is one of the deepest drill holes in which scientists have discovered living organisms encas
Trapping carbon dioxide in an icy age
In collaboration with oceanographers from the Monterey Bay Aquarium Research Institute (MBARI), a team of geologists at Washington University in St. Louis is using a rare instrument on the ocean floor just west of California. One of their earliest projects was to see if its possible to capture carbon dioxide from the atmosphere and store it on the ocean floor. The research is supported by the Department of Energy.
The geologists,
Russian scientists’ efforts targeted to recover European bison (Bison bonasus) which are exterminated everywhere have succeeded. According to the results of the all-Russian accounting of the bison quantity, their population has grown by 20% within the last five years. Herds of these relic ungulates living at large is a dream that has good chances to come true.
The last wild bison were exterminated by 1927, only 48 animals remained scattered all over the Zoos of different countries, although
New research from NASA scientists suggests emissions of black soot alter the way sunlight reflects off snow. According to a computer simulation, black soot may be responsible for 25 percent of observed global warming over the past century.
Soot in the higher latitudes of the Earth, where ice is more common, absorbs more of the suns energy and warmth than an icy, white background. Dark-colored black carbon, or soot, absorbs sunlight, while lighter colored ice reflects sunlight.
As a new outbreak of Ebola haemorrhagic fever strikes northwestern Congo, ESA is set to gather satellite data to help resolve the scientific enigma of this deadly disease.
Whenever Ebola strikes Central Africa it can kill in large numbers. More than two dozen people have so far died during the latest epidemic, centred on the town of Mbomo in the Cuvette West region of Congo, near the Gabon border.
The disease causes runaway internal bleeding in humans and also apes. The Ebola virus