Science news articles about 'populations'Yellowstone bison population halved
GARDINER, Mont., April 29 (UPI) -- U.S. wildlife officials say they've stopped culling wild bison in Yellowstone National Park because the herd's population has fallen by half.Life expectancy stagnating, worsening, for large segment of U.S. population
... reaching many parts of the country. Instead, the life expectancy of a significant segment of the population is actually declining or at best stagnating.
Researchers at the Harvard School of Public ... New study analyzes why endangered parrot population isn't recovering
The population of wild Puerto Rican parrots, among the most endangered birds in the world, has languished for decades, with several dozen remaining birds unable to break through the bottleneck that ... New cost-effective means to reconstruct virus populations
... and Switzerland have developed mathematical and statistical tools for reconstructing viral populations using pyrosequencing, a novel and effective technique for sequencing DNA. They describe their ... Restoring fish populations leads to tough choice for Great Lakes Gulls
... of massive fish stocking. The stocking was done to create recreational activities, and to reduce populations of exotic prey fish in the hope of restoring populations of native fishes.
“The effects ... Stowers Institute researchers identify gene linked to vertebral defects in patient populations
... and are short in stature. Spondylothoracic Dysostosis is prevalent in the Puerto Rican population.
Sequencing of samples from additional Spondylothoracic Dysostosis patients of Puerto Rican descent ... Feature: Population - the lost priority
Australian authorities on population growth warn that it is the fundamental sustainability priority being perilously overlooked. Graeme O’Neill reports.Study identifies trends of vitamin B6 status in US population sample
... is necessary to determine whether the RDA for vitamin B6 is high enough. "We have identified populations with a high prevalence of apparently inadequate vitamin B status," Morris says. "However, it ... Corn Rootworm Population Studies: Faster, Cheaper, And Just As Good
A new technique to obtain genetic markers to sort out corn rootworm (Diabrotica virgifera) populations has been developed. The new method is faster and cheaper than existing techniques, and it can be ... Saltwater sleuths: Seeking clues to help determine the ages of fish and shellfish populations
... say anything reliable about stock status unless you know the demographics of the various populations,” Burnett says of the importance of age data. “It is like the local school department needing to ... New study finds most North Pacific humpback whale populations rebounding
... by more than 400 whale researchers throughout the Pacific region. However, some isolated populations of humpbacks, especially those in the Western Pacific Ocean, have not recovered at the same rate ... New research forces U-turn in population migration theory
... archaeologists and linguists on whose studies conventional migration theories are based. These population expansions had nothing to do with agriculture, but were most likely to have been driven by ... Bird calls reveal population secrets
Researchers have developed a network of sensors that can track bird populations with minimal disturbance by monitoring their calls.Active social life may delay memory loss among US elderly population
... Americans and could help alleviate the public health burden, particularly because the aging population in the U.S. is expected to increase substantially. "We need to understand more about how social ... NOAA study shows eastern tropical pacific ocean dolphin populations improving
... indicate the beginning of a recovery, but these initial indications are not enough to be confident that the populations will continue to grow."
Researchers emphasize the need to continue to monitor ...
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Yellowstone bison population halved
GARDINER, Mont., April 29 (UPI) -- U.S. wildlife officials say they've stopped culling wild bison in Yellowstone National Park because the herd's population has fallen by half.Life expectancy stagnating, worsening, for large segment of U.S. population
... reaching many parts of the country. Instead, the life expectancy of a significant segment of the population is actually declining or at best stagnating. Researchers at the Harvard School of Public ...New study analyzes why endangered parrot population isn't recovering
The population of wild Puerto Rican parrots, among the most endangered birds in the world, has languished for decades, with several dozen remaining birds unable to break through the bottleneck that ...New cost-effective means to reconstruct virus populations
... and Switzerland have developed mathematical and statistical tools for reconstructing viral populations using pyrosequencing, a novel and effective technique for sequencing DNA. They describe their ...Restoring fish populations leads to tough choice for Great Lakes Gulls
... of massive fish stocking. The stocking was done to create recreational activities, and to reduce populations of exotic prey fish in the hope of restoring populations of native fishes. “The effects ...Stowers Institute researchers identify gene linked to vertebral defects in patient populations
... and are short in stature. Spondylothoracic Dysostosis is prevalent in the Puerto Rican population. Sequencing of samples from additional Spondylothoracic Dysostosis patients of Puerto Rican descent ...Feature: Population - the lost priority
Australian authorities on population growth warn that it is the fundamental sustainability priority being perilously overlooked. Graeme O’Neill reports.Study identifies trends of vitamin B6 status in US population sample
... is necessary to determine whether the RDA for vitamin B6 is high enough. "We have identified populations with a high prevalence of apparently inadequate vitamin B status," Morris says. "However, it ...Corn Rootworm Population Studies: Faster, Cheaper, And Just As Good
A new technique to obtain genetic markers to sort out corn rootworm (Diabrotica virgifera) populations has been developed. The new method is faster and cheaper than existing techniques, and it can be ...Saltwater sleuths: Seeking clues to help determine the ages of fish and shellfish populations
... say anything reliable about stock status unless you know the demographics of the various populations,” Burnett says of the importance of age data. “It is like the local school department needing to ...New study finds most North Pacific humpback whale populations rebounding
... by more than 400 whale researchers throughout the Pacific region. However, some isolated populations of humpbacks, especially those in the Western Pacific Ocean, have not recovered at the same rate ...New research forces U-turn in population migration theory
... archaeologists and linguists on whose studies conventional migration theories are based. These population expansions had nothing to do with agriculture, but were most likely to have been driven by ...Bird calls reveal population secrets
Researchers have developed a network of sensors that can track bird populations with minimal disturbance by monitoring their calls.Active social life may delay memory loss among US elderly population
... Americans and could help alleviate the public health burden, particularly because the aging population in the U.S. is expected to increase substantially. "We need to understand more about how social ...NOAA study shows eastern tropical pacific ocean dolphin populations improving
... indicate the beginning of a recovery, but these initial indications are not enough to be confident that the populations will continue to grow." Researchers emphasize the need to continue to monitor ...