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Population in Biological News

Rodent size linked to human population and climate change

You probably hadn't noticed -- but the head shape and overall size of rodents has been changing over the past century. A University of Illinois at Chicago ecologist has tied these changes to human population density and climate change. The finding is reported by Oliver Pergams, UIC research ass...

Time series identify population responses to climate change

Biologists have for several years modeled how different species are likely to respond to climate change. Most such studies ignore differences between populations within a species and the interactions between species, in the interest of simplicity. An article in the June issue of BioScience , by E...

Researchers gain genome-wide insights into patterns of the world's human population structures

Through sophisticated statistical analyses and advanced computer simulations, researchers are learning more about the genomic patterns of human population structure around the world. Revealing such patterns provides insights into the history of human evolution, the predominant evolutionary forc...

Free online toolkit provides standard measures for genome and population studies

The National Human Genome Research Institute (NHGRI), part of the National Institutes of Health, today announced the release of the first version of a free online toolkit aimed at standardizing measurements of research subjects' physical characteristics and environmental exposures. The tools will ...

A quarter of the world's population depends on degrading land

March 2009 - A new study published in the journal Soil Use and Management attempts for the first time to measure the extent and severity of land degradation across the globe and concludes that 24% of the land area is degrading often in very productive areas. Land degradation - the decline in...

Birds in Flint Hills of Kansas, Oklahoma face population decline despite large habitat

The wide-open spaces of the Flint Hills may no longer provide a secure home on the range for several familiar grassland birds, according to research by a Kansas State University ecologist and her colleagues. The researchers found that three bird species common to the Flint Hills region of Kansa...

Mixed population provides insights into human genetic makeup

Genetic diseases and genetically mixed populations can help researchers understand human diversity and human origins according to a Penn State physical anthropologist. "We wanted to get to a strategy to predict what a face will look like," said Mark D. Shriver, associate professor of biological ...

UNH researchers track lobster migrations to improve population estimates

DURHAM, N.H. Jason Goldstein checks his lobster traps in New Hampshire's Great Bay Estuary once a week, but not for tasty crustaceans to sell. Instead, the University of New Hampshire Ph.D. candidate is fitting these lobsters with transmitters and tracking their migrations year-round. Goldst...

The Finnish Population Register Centre to Deploy Entrust EAC ePassport CA Solution

DALLAS, Dec. 8 /PRNewswire-FirstCall/ -- Building off of the momentum of September's impressive showing at the ePassports EAC Conformity & Interoperability Tests, Entrust, Inc. (Nasdaq: ENTU ) advances its role as the world's ePassport leader by being selected to supply the CA software for F...

Bonefish census reveals population holding steady

VIRGINIA KEY, Fla. -- If you're looking for bonefish from Miami down to the Marquesas Islands, you have about 321,000 to choose from, and that is down slightly from the average of previous censusesmostly due to increased participation among those who are counting, researchers speculate. The Univer...

Dolphin population stunted by fishing activities, Scripps/NOAA study finds

Despite broad "dolphin safe" practices, fishing activities have continued to restrict the growth of at least one Pacific Ocean dolphin population, a new report led by a researcher at Scripps Institution of Oceanography at UC San Diego has concluded. Populations of dolphins in the Eastern Pacifi...

Studies of small water fleas help ecologists understand population dynamics

(Santa Barbara, Calif.) A study of populations of tiny water fleas is helping ecologists to understand population dynamics, which may lead to predictions about the ecological consequences of environmental change. The study is published in today's issue of the journal Nature . The water flea, ...

Unexpected large monkey population discovered

NEW YORK (AUGUST 28, 2008) A WCS report reveals surprisingly large populations of two globally threatened primates in a protected area in Cambodia. The report counted 42,000 black-shanked douc langurs along with 2,500 yellow-cheeked crested gibbons in Cambodia's Seima Biodiversity ...

New population of highly threatened greater bamboo lemur found in Madagascar

Arlington, Virginia (July 22, 2008) Researchers in Madagascar have confirmed the existence of a population of greater bamboo lemurs more than 400 kilometers (240 miles) from the only other place where the Critically Endangered species is known to live, raising hopes for its survival. The disco...

Great Ape Trust's Wich lead author of Oryx paper on continuing orangutan population declines

Des Moines, Iowa July 3, 2008 Endangered wild orangutan (Pongo spp.) populations are declining more sharply in Sumatra and Borneo than previously estimated, according to new findings published this month by Great Ape Trust of Iowa scientist Dr. Serge Wich and other orangutan conservation experts...

Study identifies trends of vitamin B6 status in US population sample

BOSTON- (May 20, 2008) In an epidemiological study, Tufts University researchers identified trends of vitamin B6 status in a sample of the United States population based on measures of plasma pyridoxal 5'- phosphate (PLP) levels in the bloodstream. Plasma PLP is the indicator used by the federa...

Researchers offer new theory for dogfish and skate population outburst on George's Bank

New research by scientists at the University of Maryland Center for Environmental Science Chesapeake Biological Laboratory questions the long-held belief that a lack of predators and competitors was the primary cause for the increase of skates and dogfish observed in Southern New Englands Georges ...

5th annual Keys bonefish population census results announced

VIRGINIA KEY, FL. Results are in from last years fifth annual Bonefish Population Census in the Florida Keys and the bonefish population has remained fairly steady from 2006, however, the number of volunteers participating in the annual event continues to grow. According to Jerry Ault, Ph.D., Univ...

New population of Iberian lynx raises hope, says World Wildlife Fund

Madrid, Spain - Spanish authorities have announced they have discovered a previously unknown population of Iberian lynx, triggering hope for one of the worlds most endangered cat species, said World Wildlife Fund today. We are excited and amazed by this discovery, said Luis Suarez, head of WWFs...

Biologists rediscover endangered frog population

For the first time in nearly 50 years, a population of a nearly extinct frog has been rediscovered in the San Bernardino National Forest's San Jacinto Wilderness. Biologists from the U.S. Geological Survey (USGS) assessing suitability of sites to re-establish frogs and scientists from the San Dieg...

Scientists identify world's largest leatherback turtle population

An international team of scientists has identified a nesting population of leatherback sea turtles in Gabon, West Africa as the world's largest. The research, published in the May issue of Biological Conservation , involved country-wide land and aerial surveys that estimated a population of betwe...

£20 million to fight virtual crime and treat our aging population

Fighting virtual crime, treating an ageing population, and turning research into commercial enterprises, will be the focus of a 20 million ($30.4 million) investment announced today by the Engineering and Physical Sciences Research Council (EPSRC), Technology Strategy Board (TSB) and the Biotechno...

£20 million to fight virtual crime and treat our ageing population

Fighting virtual crime, treating an ageing population, and turning research into commercial enterprises, will be the focus of a 20 million ($30.4 million) investment announced today by the Engineering and Physical Sciences Research Council (EPSRC), Technology Strategy Board (TSB) and the Biotechno...

Stem cells and cancer: cancer pathways that also control the adult stem cell population

Speaking today (10 April) at the UK National Stem Cell Network Annual Science Meeting in Edinburgh, Professor Alan Clarke from Cardiff University describes his work to investigate a mechanism that normally drives adult stem cells to repair the intestine. Together with his colleague Owen Sansom fro...

Paper challenges 1491 Amazonian population theories

There's a scholarly debate brewing about whether pre-Columbian Amazonian populations settled in large numbers across Amazonia and created the modern forest setting that many conservationists take to be ‘natural.' This view has become fashionable among many archaeologists and anthropologists, and ...

Remote sheep population resists genetic drift

A whimsical attempt to establish a herd of mouflon for sport hunting on a remote island in the Indian Ocean 50 years ago has inadvertently created a laboratory for genetic researchers and led to a surprising discovery. A mouflon population, bred over dozens of generations from a single male and f...

Climate change could trigger 'boom and bust' population cycles leading to extinction

Climate change could trigger "boom and bust" population cycles that make animal species more vulnerable to extinction. , according to Christopher C. Wilmers, an assistant professor of environmental studies at the University of California, Santa Cruz. Favorable environmental conditions that produc...

DNA analysis reveals rapid population shift among Pleistocene cave bears

Studying DNA obtained from teeth of ancient cave bears, researchers have been able to identify a shift in a particular population of the bears inhabiting a European valley in the late Pleistocene era. The findings illustrate the ability of DNA sequence analysis to reveal aspects of animal populatio...

Mute swan population helps explain longstanding evolutionary question

In an important new study forthcoming from The American Naturalist, biologists from the University of Oxford tracked a colony of mute swans for more than two decades to explore a longstanding evolutionary question: whether the number of eggs laid by a female bird ?known as "clutch size" ?changes in...

Environmental lessons from tsunami as world's coastal population doubles

Coastal populations and ecosystems are more likely to bounce back from extreme coastal disasters by protecting local environments and building on local knowledge, according to a report published in Science. And the aftermath of the Asian tsunami has given valuable insight into handling extreme co...

Ocean climate predicts elk population in Canadian Rockies

Mark Hebblewhite can look at specific climate statistics from the north Pacific Ocean and tell you how the elk are doing in Banff National Park. The University of Alberta doctoral student is the first researcher to show a correlation between the North Pacific Oscillation (NPO) and a mammal populati...

Are rice and wheat behind China's population boom?

The rapid growth of the earliest cities in northern China starting as far back as 2400 to 2000 BC is the result of successful rice farming combined with other crops, says University of Toronto anthropologist Gary Crawford. Although we often associate rice with Chinese agriculture, most archeologi...

Advances in lung cancer research announced at conference

... to predict, treat and ultimately prevent brain metastasis in patients with non-small cell lung cancer," Dr. Weiss said. "Identifying the highest-risk population for brain metastasis, so that informed therapeutic trials can be undertaken, could enable a paradigmatic shift in treating these patients." The stu...

Moving to the US increases cancer risk for Hispanics

...a new study confirm trends that different Hispanic population groups have higher incidence rates of certain canc... ethnic group, hiding the differences between each population group. "They are really heterogeneous from cul...d socioeconomic perspectives and represent several population groups," said Amelie G. Ramirez, Dr.P.H., director...

More than half of Texas physicians do not always recommend HPV vaccine to girls

...ut issues of safety and how to address parental concerns. That may be making them reluctant to deliver the vaccine," said Kahn. Although the study population was limited to Texas, Kahn said she believes that the views expressed by these physicians could be representative of physicians across the country. Na...

Understanding how weeds are resistant to herbicides

... can fingerprint individual waterhemp plants and use that information to do population genetic studies. "If you see herbicide resistance in northern Illinois and a year later you see the same resistance in a population in southern Illinois, one of the things you want to know in managing resist...

UBC researchers find first-ever 'wanderlust gene' in tiny bony fish

...reshwater habitats," says Barrett. "The new behavioural association we've identified may also shed light on why there's still a small but constant population of armour-less sticklebacks in the sea despite the high predation there. Sticklebacks with the mutant allele just like to go to new places." ...

Lead-based consumer paint remains a global public health threat

..., PhD, and his team have found that approximately 73 percent of consumer paint brands tested from 12 countries representing 46 percent of the world's population exceeded current U.S. standard of 600 parts per million (ppm) for lead in paint. In addition, 69 percent of the brands had at least one sample exceedi...

Urban water ecology at the ESA annual meeting

...50 percent lower daily intake of energy. Lower energy intake can slow growth and compromise fish reproduction, she says, which will ultimately lead to population declines. But she emphasizes that even a small amount of shoreline vegetation can serve as insect habitat. "Our shorelines need to remain as intact ...

Stem cell 'daughters' lead to breast cancer

... Walter and Eliza Hall Institute scientists have found that a population of breast cells called luminal progenitor cells are likely to be responsible for breast cancers that develop in women carrying mutations in the gene B...
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Breaking Biology News(10 mins):Walking fish reveal how our ancestors evolved onto land 2Pitt and Carnegie Mellon engineers discover why learning can be difficult 2Pitt and Carnegie Mellon engineers discover why learning can be difficult 3University of Utah biologist wins Turkey's top science prize 2
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