Tag: "population" at biology news
Detecting Deer: New Method For Counting Population In Urban Areas
...earch area in southwest St. Louis County. The deer population
at Tyson has long thought to be excessive for its ...ror. "One of the key things is that we had a known population
to start with," saysBeringer. "That's a definite asset to any census. There have been many otherat...
News Backgrounder: Duke Primate Center Successfully Fosters Mysterious Aye-Ayes
...this spring brings the totalcaptive Primate Center population
to 12, said director Ken Glander. The centeris now confident enough of their knowledge of the animals that a breeding pair --Merlin and Caliban -- has been loaned to the San Francisco Zoo, and another pairwill head for the Bronx Zoo sometime during t...
Minuscule Ocean Plants Help Stabilize Earth's Atmosphere, Climate
...ny organisms implies that theworld's phytoplankton population
must recycle itself quickly, on the order ofabout once a week, the paper estimates. And that quick a turnaround time alsomeans phytoplankton are exceptionally sensitive to change, the authors noted. Whether or not phytoplankton grow in abundance depe...
Ecological Consequences Of Jasmonate-Induced Responses For Plants In Native Populations
...y is typically much higher (345 pairs). A fifth population
of 50 pairs was created in a nearby field-plant...eatments could be readily seen. For example, in population
IIA, 10 days after the treatment, 33% of the control plants had lost more than 40% of their leaf...
Syphilis Genome Sequence Offers Clues To Better Diagnosis, Prevention And Treatment
...llin or other antibiotics. About10 percent of the population
is allergic to penicillin; others do not respond tothe usual doses and may need repeated injections. Easy-to-administer treatmentsthat do not require an injection are needed, especially for use in developingcountries. The genetic blueprint for the s...
Stargazer Gene Provides New Clues To Calcium Channel Defects In Absence Epilepsy
... that affects approximately onepercent of the U.S. population
and has two major forms: absence (petit mal) andconvulsive (grand mal). Absence seizures primarily occur in children and arecharacterized by brief lapses in consciousness during which the person appearsto be staring into space. Convulsive seizures ar...
Gene Patterns Can Predict When--But Not Whether--Alzheimer's Will Strike
...ttery of standardizedneuropsychological tests to a population
of 4,932 elderly persons and then gavefull clinica...erent variants of APOE. In that half of the population
predisposed for Alzheimer's, those whoinherited two E4 alleles (one from each parent) experienced on...
Study 'Gone With The Wind' Provides Stellar Ecological Example
...third is that the risk of extinction is related to population
sizewhen disturbance is moderate but not when it is catastrophic. In relation tothis, the biologists uncovered perhaps the first concrete evidence of howhurricanes wreak devastation on low-lying island organisms. It's not the windso much as the wat...
The Genetic Basis Of Childhood Schizophrenia
...ncidence of large CAG/CTG repeats wasfound in this population
confirming previous findings which identified anassociation between adult onset schizophrenia and TREs. However, in contrastwith some previous studies, the association of large repeats with the COSsample seems confined to the male population. Further...
Report On Electrical And Magnetic Fields Released; Public Invited To Comment At Regional Meetings
... risks. The majority view was based on population
studies, and was made in theface of the panel's finding that data from recently concluded animal and otherlaboratory studies failed to support such a link. The conclusions of the scientists' review were announced June 24, butthe 508-page r...
USGS To Present Diverse Research At ESA Annual Meeting
...orned Lark and Lark Bunting have actuallyincreased population
the year after fields are hayed while other specie...heses about theeffects of habitat fragmentation on population
size,animal mobility, and related conditioning factors such as sex were tested. Wherefragmentation i...
Gene-Toxin Link May Shed Light On Cause Of Parkinson's Disease
... for 90 percent of the U.S. population
because most people can readily detoxify these chemicals," Hubble said. "Perhaps there's a small percentage of individuals who cannot handle or detoxify chemical compounds because o...
Putting A Price Tag On Pollution
...fees are based onwidely accepted waysof predicting population
and traffic changes. But consider industrial plants,which often dischargetoxic and non-toxic waste that seeps through the soil, affecting vegetation andwater supplies. It ismuch harder to measure and predict the corresponding levels of contamination,...
Salamanders May Reveal Best Way To Manage Forests
...atterns," Haas elaborated. Estimates of salamander population
size arebased on counts at the surface. "When we o...anges in behavior or if there is reallya change in population
size. For more information, contact Douglas Harpole at 540-231-5703 or email@example.com or Shannon K...
Forecasting The El Niño-Driven Ebb And Flow Of A Rogue Mosquito
...he University ofWisconsin-Madison may help predict population
booms, and when and where in theworld the mosquito...ecent El Nino." Hopp's model depicts the worldwide population
dynamics of the Aedes aegyptimosquito based on climatic variables, looking at the development at eac...
Turtle Population Apparently Threatened By Urban Sprawl, Traffic
... implying specialconservation concerns. "It's the population
in Illinois that is showing the most potential forpopulation isolation and loss," Rubin said. "Theturtles once were common throughout the northern two-thirds of Illinois, but nowtheir numbers are scarce and restrictedto the northernmost region." Rub...
A Common Microbe Could Help To Trigger Alzheimers
...d bycoughs and sneezes. By the age of 20, half the population
have been infectedwith C. pneumoniae, and the likelihood of being infected increases with age. Thebacterium has already been accused of triggering atherosclerosis-blockedarteries that can lead to heart attacks ("Can you catch a heart attack?", NewSci...
USGS Contributions Enhance Public Health Research, Scientists Showcase Technologies At San Diego Meeting
...l environment; and, * the geographical analysis of population
data with site information to determine if inequities exist. USGS also will become a signatory in a partnership agreement with other federal, state and private agencies to form a GIS in Public Health Task Force. This task force is charged with devel...
Penn Researchers Find Mutation In Prostate Cancer Gene
...ccurring variety of prostate cancer in the general population
--that which occurs in older men without a strong family historyof the disease. Prostate cancer is the second leading cancer killer in men. Thisyear, the American Cancer Society estimates that 184,500 newcases of prostate cancer will be diagnosed an...
Sturgeon, Trout And Telemetry--USGS Research Mixes Science And Technology At American Fisheries Society Annual Meeting
...ing diminished this fishery and by the 1940's, the population
had virtually disappeared in some areas of the wat...ers have been developed and used to assess genetic population
structure in Atlantic salmon surveyed from throughout the species' range. In particular, salmon fro...
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