News tagged with population declines
From yeast, researchers learn how populations collapse
In the early 1990s, overfishing led to the collapse of one of the most bountiful cod fisheries in the world, off the coast of Newfoundland. Twenty years later, the cod population still has not recovered, dramatically ...
Jun 01, 2012 |
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Whale population size, dynamics determined based on ancient DNA
Estimates of whale population size based on genetics versus historical records diverge greatly, making it difficult to fully understand the ecological implications of the large-scale commercial whaling of the 19th and early ...
May 09, 2012 |
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Is bioenergy expansion harmful to wildlife?
Despite the predicted environmental benefits of biofuels, converting land to grow bioenergy crops may harm native wildlife. Researchers at the Helmholtz Centre for Environmental Research in Leipzig have developed a way to ...
Apr 03, 2012 |
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An early spring drives butterfly population declines
Early snow melt in the Colorado Rocky Mountains initiates two chains of events resulting in population decline in the mormon fritillary butterfly, Speyeria mormonia. One effect of snow melt date was readily detectable, but th ...
Mar 15, 2012 |
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Genetics of endangered African monkey suggest troubles from warming climate
A rare and endangered monkey in an African equatorial rainforest is providing a look into our climatic future through its DNA. Its genes show that wild drills (Mandrillus leucophaeus), already an overhunted specie ...
Feb 29, 2012 |
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Big fish reveal shelter secrets on reefcam
When it comes to choosing a place to hang out, big reef fish like coral trout, snappers and sweetlips have strong architectural preferences.
Feb 13, 2012 |
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Hellbender salamander study seeks answers for global amphibian decline
A new study co-authored by University of Florida researchers on the endangered Ozark Hellbender giant salamander is the first to detail its skin microbes, the bacteria and fungi that defend against pathogens.
Dec 19, 2011 |
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Law enforcement vital for great ape survival
Recent studies show that the populations of African great apes are rapidly decreasing. Many areas where apes occur are scarcely managed and weakly protected. Researchers from the Max Planck Institute for Evolutionary ...
Dec 08, 2011 |
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DNA evidence offers proof of North American native population decline due to arrival of Europeans
(PhysOrg.com) -- Most history books report that Native American populations in North America declined significantly after European colonizers appeared, subsequent to the “discovery” of the new world by Christopher ...
Dec 06, 2011 |
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Study: Triple threat paints grim future for frogs
Frogs, salamanders and other amphibians may eventually have no safe haven left on the globe because of a triple threat of worsening scourges, a new study predicts.
Nov 16, 2011 |
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Research team suggests European Little Ice Age came about due to reforestation in New World
(PhysOrg.com) -- A team comprised of geological and environmental science researchers from Stanford University has been studying the impact that early European exploration had on the New World and have found evidence that ...
Space & Earth / Earth Sciences
Oct 17, 2011 |
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Biodiversity helps dilute infectious disease, reduce its severity
Researchers at Oregon State University have shown for the first time that loss of biodiversity may be contributing to a fungal infection that is killing amphibians around the world, and provides more evidence ...
Sep 19, 2011 |
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Human sewage kills imperiled coral: study
A research team from Rollins College in Florida and the University of Georgia has identified human sewage as the source of the coral-killing pathogen that causes white pox disease of Caribbean elkhorn coral. ...
Aug 17, 2011 |
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Climate change study warns 1 in 10 species could face extinction by 2100
One in 10 species could face extinction by the year 2100 if current climate change impacts continue. This is the result of University of Exeter research, examining studies on the effects of recent climate change on plant ...
Jul 11, 2011 |
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Caribou in Alberta's oil sands stressed by human activity, not wolves
Caribou have been dwindling in Alberta for several decades and some scientists believe they could be gone entirely in 70 years. In the area of the petroleum-rich Athabasca Oil Sands in the northern part of ...
Jun 22, 2011 |
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