News tagged with human population density
Study reveals 'sobering' decline of Caribbean's big fish, fisheries
May 06, 2009 |
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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 ...
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Ecologists sound out new solution for monitoring cryptic species
Nov 27, 2009 |
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Ecologists have at last worked out a way of using recordings of birdsong to accurately measure the size of bird populations. This is the first time sound recordings from a microphone array have been translated into accurate ...
Variable Temperatures Leave Insects wtih a Frosty Reception
Nov 25, 2009 |
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(PhysOrg.com) -- For the first time, scientists at The University of Western Ontario have shown that insects exposed to repeated periods of cold will trade reproduction for immediate survival.
First 'genetic map' of Han Chinese may aid search for disease susceptibility genes
Nov 25, 2009 |
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The first genetic historical map of the Han Chinese, the largest ethnic population in the world, as they migrated from south to north over evolutionary time. was published online today by the American Journal of Human Ge ...
America's increasing food waste is laying waste to the environment
Nov 25, 2009 |
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Food waste contributes to excess consumption of freshwater and fossil fuels which, along with methane and carbon dioxide emissions from decomposing food, impacts global climate change. In a new paper published in the open-access, ...
Road rage: Fuel vapor heightens aggression
Nov 24, 2009 |
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Outrageous prices may not be the only thing causing anger at the petrol pumps. A new study, published in the open access journal BMC Physiology, has shown that rats exposed to fumes from leaded and unleaded gasoline become ...
A year after discovery, Congo's 'mother lode' of gorillas remains vulnerable
Nov 23, 2009 |
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A new study by the Wildlife Conservation Society says that western lowland gorillas living in a large swamp in the Republic of Congo—part of the "mother lode" of more than 125,000 gorillas discovered last ...
Multiple health concerns surface as winter, vitamin D deficiences arrive
Nov 23, 2009 |
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A string of recent discoveries about the multiple health benefits of vitamin D has renewed interest in this multi-purpose nutrient, increased awareness of the huge numbers of people who are deficient in it, spurred research ...
Lose the fat: Targeting grease to curtail sewer overflows
Nov 23, 2009 |
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Sewer overflows are a nasty business, posing dangers to human health and the environment. North Carolina State University is launching a new project with funding from the U.S. Environmental Protection Agency (EPA) that targets ...
It's a gas: New discovery may lead to heartier, high-yielding plants
Nov 23, 2009 |
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In a research report published in the November 2009 issue of the journal Genetics, scientists show how a family of genes (1-aminocyclopropane-1-carboxylate synthase, or ACS genes) are responsible for production of ethyle ...
Gene mismatch influences success of bone marrow transplants
Nov 22, 2009 |
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A commonly inherited gene deletion can increase the likelihood of immune complications following bone marrow transplantation, an international team of researchers reports in the November 22 advance online issue of Nature Ge ...
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