Tag: "threatened" at biology news

Past climate change effects on mammals may mirror global warming impact

...at declines in the Homestead fossil record will be threatened at low elevations throughout the Great Basin in global warming. And there are implications outside the Great Basin in parts of eastern Washington and Oregon where small mammals will be in peril. What happened in the middle Holocene will repeat unde...

Last unidentified sport fish in North America gets a scientific name

...ments, Burgess said. Williams said shoal bass are threatened by habitat loss caused by a series of dams on the Chattahoochee, Flint and Apalachicola rivers. Unlike other bass found in deep reservoirs and rivers, the shoal bass survives only in shoal areas in rivers and large creeks. Booming population growth a...

Complex mystery of amphibian decline calls for a new kind of science

... have become extinct and numerous others are being threatened -- each with its own unique set of environmental conditions that may be involved. "This project involves 24 investigators across three continents," Collins said. "It's so large because the problem is big and complicated -- the questions require an ...

RX for Hawaii's dry forests: no cows and lots of hard work

...y. "Tropical dry forests are in general far more threatened than rainforests," says Robert Cabin of the U.S. Forest Service in Hilo, Hawaii, who co-authored this paper. Hawaii has lost about 40% of its rainforests but more than 90% of its dry forests, which get only about 20 inches of rain per year. One of H...

Jays and cars don't mix

...a color-banded population of Florida scrub-jays, a threatened species found only in the state's peninsular oak-scrub habitat. The researchers monitored the survival and reproductive success of jays nesting along Old State Road 8, a two-lane highway at Archbold Biological Station in Highlands County. Over the ni...

Obesity has reached epidemic proportions - urgent need for research

... they are for slim people. Fat people are not only threatened by cardiovascular disorders, but also by diabetes, arteriosclerosis and renal disorders. If a hereditary predisposition is exacerbated by additional dietary deficiencies and lack of exercise, then the pounds will accumulate almost inevitably. "Today,...

Spiders get better web sites by rising early

... the smaller ones. Small spiders are likely to be threatened by larger ones, particularly if they start to build their webs while larger spiders are still building. "If a smaller individual has the chutzpah to start building at the same time as larger spider, the big ones threaten it by shaking the silk lines...

Endangered butterfly needs proper habitat, special nectar

...st methods to restore the butterfly's habitat. A threatened plant species, Kincaid's lupine, is the only available host plant (in the Eugene area where Schultz works) for the many months of the egg and larval stages of the Fender's blue. The butterflies lay their eggs on the underside of the leaves in May. Th...

USGS reports increase of sea otters in recent survey

...rall increase observed since spring 1995, when the threatened population reached its highest number of 2,377 ind...ed. In 1977 the California sea otter was listed as threatened under the Endangered Species Act. Disease, contaminants, starvation, and entanglement or entrapment...

Study finds rare juvenile turtles

...se of Gibbons' research with more species becoming threatened worldwide as turtles are being used for food, exported for trade and as their habitats are destroyed or degraded. "We are fortunate to have Dr. Kurt Buhlmann of Conservation International involved in the project as he is involved with turtle conserv...

Grasslands, deserts, mountains and fire

...eat the eggs. Some of the bird species that may be threatened are lark bunting and horned lark. Scientists already know that the number of birds that survive to adulthood in grassland areas is very low and that the reason why may relate to differences in vegetation type. Scientists also know that the number of...

Cows and conservation: a round-up of speakers to discuss new ideas on ranching

... which encourage ranchers to protect endangered or threatened species need to be tested. He will also advocate a management style which is inclusive of multiple ecological values. The second speaker in the session, Mike Wolfe from Utah State University, will discuss the exemplary techniques of progressive...

We are family: the imperative for a chimpanzee genome project

...thousands of captive apes and their wild relatives threatened with extinction....

Ice-breakers drive whales away

...eluga whales? NOISY ice-breakers may be scaring threatened beluga whales away from their preferred habitats in the Arctic and even damaging their hearing, say researchers in Canada. They have developed software that might help ice-breaker crews-and other noisy industries-to work more quietly. Beluga numbers...

Fishing woes will cast need for aquaculture biotech

... 70 percent of fisheries in the world's oceans are threatened by over fishing. One out of every four fish eaten in the world is raised by aquaculture. There has been a 10 percent annual growth rate in the world aquaculture for several years in sequence, according to the FAO. The agency estimates that, between 2...

DNA research reveals a new whale species

...experiencing lowered reproductive success, and are threatened by ships that collide with the animals and fishing nets that entangle them. Some of the same threats may be impacting the North Pacific right whale, but virtually no studies exist to evaluate their respective toll on the species. "There has bee...

Taking the long view: examining factors which influence Northern Spotted Owls

...x occidentalis caurina) was federally listed as a threatened species in 1990, environmental groups working in the Pacific Northwest quickly embraced the animal as a mascot for the natural areas of the region. Studies conducted early in the decade indicated that the birds had a strong affinity for old gro...

Campaign to protect critically endangered beluga sturgeon

...t critically endangered beluga sturgeon and other threatened sturgeon species announced by leading environmental groups Halt to trade of beluga caviar sought; consumers urged to reduce their consumption WASHINGTON (December 6, 2000) Caviar, long a symbol of luxury, is emerging instead as a sign o...

USGS: Contaminants may play important role in California amphibian declines

...n Joaquin Valley. The red-legged frog is listed as threatened under the U.S. Endangered Species Act, and the mountain yellow-legged frog and Yosemite toad have been proposed for listing. "While crucial to the agriculture industry, pesticides by their very nature can result in serious harm to wildlife both by di...

UC Davis M.I.N.D. Institute launches new program to identify biomarkers for autism and other disorders

...s. "If we are able to predict which children are threatened by specific life events, we can take special precautions to limit their exposures," said Amaral. "We could also begin therapeutic interventions long before any serious symptoms are observed. In this way we would hope to diminish or eliminate the poss...

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