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.
... 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 ...
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 ...
... 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 ...
... 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 ...
... 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 ...
Australian authorities on population growth warn that it is the fundamental sustainability priority being perilously overlooked. Graeme O’Neill reports.
... 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 ...
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 ...
... 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 ...
... 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 ...
... 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 ...
Researchers have developed a network of sensors that can track bird populations with minimal disturbance by monitoring their calls.
... 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 ...
... 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 ...
