Tag: "decline" at biology news
Leading scientists design new framework for biodiversity conservation
...a around the globe. Wanting to reverse the rapid decline
of species, both public and private conservation groups from the Park Service to The Nature Conservancy face a constant dilemma of when, where, and how to invest limited funds to maximize conservation benefits. In attempts to have a scientific foun...
When sun's too strong, plankton make clouds
...ble with a slow increase over summer and a gradual decline
over winter. The next step for the researchers will be to see how much the added clouds from plankton actually impact climate. By figuring out how plankton react to light, scientists now have the information they need to use computer models to recre...
Society for conservation biology conference
...ns have increased due to habitat fragmentation and decline
in wild prey. Getting the Most from International Youth Environmental Education, A Lesson from Venezuela Environmental education is frequently recommended as a way to change local attitudes towards an endangered species or ecosystem, but litt...
'Extinct' bird rediscovered in Mexico
... Mexico, appears to have experienced a precipitous decline
in 1988 after Hurricane Gilbert tore through the island. It immediately became rare, but small numbers of the bird were known to exist until it was last sighted in 1995. That same year, Hurricane Roxanne ripped through Cozumel and may have also contr...
Herpes tool allows researchers to customize Alzheimer's vaccine
...proved much safer while still causing a 20-percent decline
in the amount of amyloid plaque in the brain. The additional antigen tweaked the immune response in a way that muted the original vaccine's harmful side effects. "From our studies and those of others, it appears that you need to induce specific immu...
UK researchers develop way of predicting a woman's 'reproductive' age
...is number has already fallen significantly and the decline
continues relentlessly. When the number reaches ar... (corresponding to an average age of 37 years) the decline
accelerates until numbers are down to around 1,000 follicles in a peri-menopausal woman. Dr. Hamish ...
Damaged genes in aging human brain provide clues to cognitive decline
...aging human brain that may contribute to cognitive decline
associated with aging. The study appears June 9 as...ce gene damage in young adults may delay cognitive decline
and the onset of brain diseases in later years. However, more research is needed. "We ...
Earstones tell fishes' tale of early life in the Colorado River estuary
...s. Although overfishing has been implicated in the decline
of both species, commercial harvesting isn't the only reason for the two species' decline, the finding suggests. Since 1960, diversion of Colorado River water for human uses has greatly reduced the amount of fresh water that reaches the Gulf of Calif...
Unexpected changes in Earth's climate observed on the dark side of the moon
...ng satellite cloud data, they have found a gradual decline
in the Earth's reflectance that became sharper in the last part of the 1990's, perhaps associated with the accelerated global warming in recent years. Surprisingly, the declining reflectance reversed completely in the past three years. Such changes...
Mite transmits viruses damaging to wheat
...nnot handle more stress and die. But is the recent decline
in High Plains virus a trend? Rush cannot say, but as fields are dying, surviving plants show only wheat streak mosaic virus. Near Guymon, High Plains virus is still prevalent and fields also test positive for both viruses. The crop is a week o...
Tigecycline - Candidate antibiotic produces 74 percent cure rate in cSSSI patients
...nt, and 67 percent at the test-of-cure visit. The decline
in rates directly resulted from patients receiving either additional antibiotics or surgery between the end of their treatments and their test-of-cure visits. The 50 mg group also had a higher overall bacterial eradication rate at the end of therap...
Imaging study shows brain maturing
...e first 18 months of life was followed by a steady decline
as unused circuitry is discarded. Then, in the late l990s, NIMH's Dr. Jay Giedd, a co-author of the current study, and colleagues, discovered a second wave of overproduction of gray matter just prior to puberty, followed by a second bout of "use-it-o...
New research supports theory that indirect transmission of chronic wasting disease
...fection and that diseaseprevalence was expected to decline
as the number of infectedanimals is reduced. "Our findings that contaminated environments can causetransmission means that these declines in infection rates may bemuch slower than would be predicted by models that only consideranimal-to-animal trans...
Dramatic decline of California native frog linked to introduced trout in mountain lakes
.... "I'm not saying that other things didn't cause a decline
as well, but this report shows that most of the pr...ed the first international conference on amphibian decline
in 1990. In a 1915 survey of wildlife in the Sierra Nevada, UC Berkeley biologist and museum directo...
Pearly mussels: One of North America's natural jewels is disappearing
...etween larvae and their fish hosts. As mussel beds decline
in size, ecologists still don't know the role that they play or what their absence might mean for the functioning of modern river ecosystems. The loss of pearly mussels is especially troubling because, as long-lived aquatic organisms, they have the ...
Using science to restore habitat for declining species
...system in the West Gulf Coastal Plain has led to a decline
in the plants that support the pocket gopher, whic...ionship between summer maternity locations and the decline
of the species, which has continued despite the gating of major hibernation caves. In 2003, research...
Traditional fishing destroys corals - new research
...seas, such as fishing, has resulted in a worldwide decline
in predators. However, surprisingly little is known of the impact of removing predators on marine biodiversity. "We were very surprised our research showed such light levels of exploitation by subsistence islanders fishing for food could cause such p...
Fishing kills Fijian coral reefs
...ploitation of the seas has resulted in a worldwide decline
in predators. However, surprisingly little is known of the biodiversity impact of removing marine predators.It was previously thought that diverse ecosystems such as coral reefs would be relatively resilient to the low levels of predator removal - th...
U.S. President's budget proposal means 5-year cuts 'well below historic levels'
... large funding increases, all other R&D areas will decline
dramatically over the next five years, including E...ent of Agriculture (USDA) intramural research will decline
by 19 percent and extramural research grants will see a 28 percent cut. At the Department of Comm...
Citizens asked to monitor impact of invasive bird species
...sticide use and habitat loss resulted in a serious decline
in bluebird populations in the middle of the last century. Today bluebird populations are rebounding thanks to bird enthusiasts who provide nest boxes in their yards, fields and neighborhoods. Phillips points out, however, that simply putting up nest...
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