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Alpine bird numbers on the slide due to high-altitude ski runs
01-16-2007 · EurekAlert!High-altitude ski runs are seriously affecting Alpine birds, ecologists have found for the first time. Writing in the January issue of the Journal of Applied Ecology, Italian ecologists warn that ski pistes above the tree line result in fewer species and lower numbers of birds compared with natural grassland at similar altitudes. Ski developers should use new, environmentally-friendly techniques when constructing pistes in future, they say.
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Keywords: alpine, bird, numbers, slide, high-altitude, ski, runs, number, high, altitude, run
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- Dramatic shift from simple to complex marine ecosystems occurred 250M years ago at mass extinction
11-23-2006 · EurekAlert!
The biggest mass extinction did more than eliminate species: It fundamentally changed the basic ecology of the oceans. Ecologically complex marine communities displaced simple communities, setting a pattern that has continued ever since.This striking change has escaped detection because previous research relied on single numbers -- such as the number of species alive at one time -- to track diversity. New research examines the relative abundance of marine life forms in communities over 540 million years.
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- Copy number variation may stem from replication misstep
12-27-2007 · EurekAlert!
Genome rearrangements, resulting in variations in the numbers of copies of genes, occur when the cellular process that copies DNA during cell division stalls and then switches to a different genetic "template," said researchers at Baylor College of Medicine in Houston in a report that appears today in the journal Cell.
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- Underestimation of frog numbers causes concern
10-30-2007 · EurekAlert!
Frogs are vanishing from all the world's ecosystems with unprecedented speed. It is thought that more than 100 species have died out since 1980 alone. In a paper published in the online, open-access journal PLoS ONE, a team of experts, including researchers from the University of Canterbury, says the number of species has been strongly underestimated and they are calling for action.
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- Mountain summits in the Alps becoming increasingly similar
11-30-2007 · EurekAlert!
Alpine summit vegetation will become increasingly homogenized as a result of climate change, say researchers from the University of Bayreuth and the Helmholtz Center for Environmental Research writing in the international Journal of Vegetation Science. The biologists assessed data on the composition and species numbers of plants on the summits of seven mountains measuring over 3000 meters in the Bernina range in Switzerland over a period of almost 100 years.
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- WCS study finds potential to double tiger numbers in South Asia
11-05-2007 · EurekAlert!
Researchers at the Wildlife Conservation Society and other institutions declare that improvements in management of existing protected areas in South Asia could double the number of tigers currently existing in the region.
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- Stanford's nanowire battery holds 10 times the charge of existing ones
12-18-2007 · EurekAlert!
Stanford researchers have found a way to use silicon nanowires to increase the storage capacity of Lithium ion batteries by 10. A laptop that nows runs for two hours on battery could run a stunning 20 hours.
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- Increasing numbers of California teens abuse over-the-counter cold medicine
12-04-2006 · EurekAlert!
The number of reported cases of dextromethorphan abuse in California increased 10-fold between 1999 and 2004, an increase that parallels national trends, according to a report in the December issue of Archives of Pediatrics & Adolescent Medicine, one of the JAMA/Archives journals. About three-quarters of the reported cases were among individuals age 9 to 17.
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- Wild tigers need cat food
12-13-2006 · EurekAlert!
A landmark study by the Wildlife Conservation Society (WCS) and US Geological Survey (USGS) says tigers living in one of India's best-run national parks lose nearly a quarter of their population each year from poaching and natural mortality, yet their numbers remain stable due to a combination of high reproductive rates and abundant prey.
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- Research highlights how farmers' agri-environment schemes could do more for wildlife
12-08-2006 · EurekAlert!
New research published in Ecology Letters offers an explanation for why numbers of many countryside bird species continue to decline, despite Government financial support for farmers to improve their habitat through agri-environment schemes.
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- Reducing smoking -- mixed messages and poor markers
07-17-2007 · EurekAlert!
Some people are unwilling or unable to stop smoking, but are prepared to try and reduce the numbers of cigarettes they smoke each day. After studying healthcare literature, a team of Cochrane Researchers could find only a few reports that assessed methods aimed at helping people reduce use. It is also unclear whether cutting down the number of cigarettes delivers clear health benefits.
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