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Tag: "hotspots" at biology news

Biodiversity hotspots identify conservation priorities

...one of nine newly identified hotspots. Three other hotspots that extend into U.S. states or territories -- the...here they can do the most good. "The biodiversity hotspots are the environmental emergency rooms of our planet. This latest assessment underscores the value of...

Survey finds silver contamination in North Pacific waters

...an is vastly diluted, so there may be some massive hotspots of silver contamination around the Asian continent. That's where effects on marine organisms would occur," Luoma said. In San Francisco Bay, silver and copper from industrial discharges reached such high levels in the 1970s and early 1980s that clam...

Primates on the brink

...ue of Madagascar, one of the planet's biodiversity hotspots that has lost most of its original forest cover. M...rrestrial plant and animal diversity. Eight of the hotspots are considered the highest priorities for the survival of the most endangered primates: Indo-Burma, ...

Scientists discover global pattern of big fish diversity in open oceans

...ighlight a surprising global pattern of open ocean hotspots - areas with predictable congregations of tuna, ma..., and other ocean predators. Scientists say these hotspots - off the east coasts of the US, Australia, and Sri Lanka; south of Hawaii; and in the South-Eastern...

Multi-species genome comparison sheds new light on evolutionary processes, cancer mutations

...mly as long thought ?and that many of the breakage hotspots are also involved in human cancer. In a study pub...kely to occur in or near the evolutionary breakage hotspots than are less common types of cancer-associated abnormalities. Researchers theorize that the rearran...

'Punctuated' evolution in the human genome

...t today that regions of the human genome have been hotspots for acquiring duplicated DNA sequences ?but only at specific time-points during evolution. It appears that long periods of genomic stasis, at least with regard to the accretion of duplicated DNA fragments, are "punctuated" by relatively brief episode...

Rodent social behavior encoded in junk DNA

... "This research appears to have found one of those hotspots in the genome where small differences can have large functional impact," explained Insel. "The Emory researchers found individual differences not in a protein-coding region, but in an area that determines a gene's expression in the brain. This is an ...

Team of international scientists departs today to discover the unknown in China's Himalayan region

...ies found only in this hotspot. The biodiversity hotspots are 34 regions worldwide where 75 percent of the planet's most threatened mammals, birds, and amphibians survive within habitat covering just 2.3 percent of the Earth's surface (roughly equivalent to the combined areas of the five largest U.S. states...

Study: Competition for sex is a 'jungle out there'

... implications given the importance of biodiversity hotspots for medicine, food, nutrient cycling, and alternative resources for pollinators of domesticated crops world wide," said collaborator Tia-Lynn Ashman, Ph.D., of the University of Pittsburgh. "The concern is that we are losing habitat really rapidly g...

Chimpanzee study reveals genome variation hotspots

...from Arizona State University, are finding similar hotspots in chimpanzees, which has implications for the understanding of genomic evolution in all species. "We found that chimpanzees have many copy number variants -- duplications or deletions of large segments of DNA -- in the same regions of the genome as...

New strategy developed to combat West Nile Virus

... U.S. has been sporadic, the researchers say, with hotspots arising one year in Colorado, and other regions during other years. The key to understanding the spread of the disease is to investigate the local conditions that may lead to amplification. "It is a localized phenomenon," Shaman said. "We have to un...

Fire ant-attacking fly spreading rapidly in Texas

...p BFL researchers identify where the latest phorid hotspots exist so that landowners can know where to bring fire ants from their property. Recently, the Texas Organization of Wildlife Management Associations adopted the initiative and plans to help promote the spreading of phorids by private ranching and w...

Global map shows new patterns of extinction risk

...r Owens adds that this geographical discrepancy in hotspots of endangered species from different groups can be...nt not to assume that there are simply a number of hotspots across the globe where everything living there is endangered ?the picture is far more complicated, w...

Hotspots of mercury contamination identified in eastern North America

...her fish, birds, and mammals. In addition to these hotspots in New England, New York, and Nova Scotia, the res...ized in the January 2007 issue of BioScience. The hotspots are believed to result from complex processes that move atmospherically released mercury through the...

Leeches ferry infection among newts

...It could lead to more leeches and create potential hotspots of disease," Raffel noted....

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