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Population in Biological News

Moving to the US increases cancer risk for Hispanics

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

Family planning a major environmental impact

... But an added challenge facing us is continuing population growth and increasing global consumption of ... nations have much higher populations and rates of population growth than the U.S., their overall impact on the ... As the developing world increases both its population and consumption levels, this may change. ...

Rodent size linked to human population and climate change

... Chicago ecologist has tied these changes to human population density and climate change. The finding is ... 15 traits were associated with changes in human population density, current temperature, or trends in ... with 'people-caused' parameters, such as population density and anthropologically-caused climate ...

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 area has not yet been determined. "If this population is large, it could play an important role in the ... as well as helping to ensure that the last known population of the mountain yellow-legged frog in the San ...

121 breeding tigers estimated to be found in Nepal

... ever overall nation-wide estimate of the tiger population brought a positive ray of hope among ... the four protected areas of Nepal. The 2008 tiger population estimate was jointly implemented by the DNPWC, ... Service (USFWS). The 2008 nation-wide tiger population was initiated on 15 November 2009 in the Terai ...

The value of variation: Ecologists consider the causes and consequences

... of Tennessee, Knoxville, July 27-29. population and Community Ecology Consequences of ... Traditionally, ecological theory has treated a population as a homogeneous set of individuals, implicitly assuming that individuals within a population are ecologically interchangeable, but individuals ...

Ethiopian government celebrates rinderpest eradication

... July 21, 2009 - A menace to the African cattle population for more than a century, the World Organisation ... because the country has the largest cattle population in Africa. "Most of the veterinarians working ... initially killing up to 90 percent of the cattle population in Ethiopia, where an estimated one-third of the ...

Seals quickly respond to gain and loss of habitat under climate change

... the emergent habitat and established a new population which flourished. DNA sequences from the ... genetic diversity, probably due to the very large population size sustained there. The study, published in the ... to the original source population. The Antarctic population crashed and much diversity was lost." This ...

Working to conserve endangered 'Playboy' bunnies

... student and graduate teaching assistant, is using population genetics to aid in the conservation of the Lower ... and plants for feeding, nesting and shelter. population growth and development in the Lower Keys has led ... populations, relocate them and create a new population in a habitat where the bunnies are less likely to ...

Environmental cues control reproductive timing and longevity, University of Minnesota study shows

... individuals use environmental cues to predict population declines, causing them to delay reproduction ... if bad times turn to good times and the population is on the verge of a boom, reproducing sooner ... later will help their genes thrive. "If the population is decreasing, future kids make a bigger splash ...

'Bycatch' whaling a growing threat to coastal whales

... As many as 150 whales came from the coastal population through commercial bycatch whaling, and another 150 were taken from an open ocean population through Japan's scientific whaling. In some past ... catch and the need to determine appropriate population counts to sustain the distinct stocks. Whales ...

Counting sheep in climate change predictions

... models may be able to aid conservation of a population of bighorn sheep. The effects of a changing climate on a population of bighorn sheep can be mathematically predicted, ... from Germany, the US, and Mexico studied a population of bighorn sheep introduced to Tiburon island, ...

Scientists find formula to uncover our planet's past and help predict its future

... Which factors most heavily influence population decline and, eventually, lead to extinction? ... issues such as climate change and the extreme population fluctuations in some animal species. By ... Many small mammalian species have cyclic population dynamics, periodically oscillating between large ...

Did the North Atlantic fisheries collapse due to fisheries-induced evolution?

... a few generations with drastic effects on the population and the fishery. Using molecular population genetics, the authors reports steep changes in ... of the fish," said Einar Arnason, professor of population genetics and lead author. In addition to the ...

Scientists identify world's largest leatherback turtle population

... team of scientists has identified a nesting population of leatherback sea turtles in Gabon, West Africa ... land and aerial surveys that estimated a population of between 15,730 and 41,373 female turtles using ... as critically endangered globally, but detailed population assessments in much of the Atlantic, especially ...

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

... learning more about the genomic patterns of human population structure around the world. Revealing such ... "Studying genomic patterns of human population structure also has practical applications in ... researchers have tried to look at fine-scale population structure. Usually these studies focus on only ...

Human role in Indonesian polluting forest fires -- Guido van der Werf in Nature Geoscience

... of the forest fires is directly linked to population density and land use. Nature Geoscience ... prone to fires prone during drought years. The population of Sumatra grew rapidly in the 1960s. However, a comparable increase in the population was not seen in Kalimantan until the 1980s. ...

Disappearing act of world's second largest fish explained

... data, our finding indicates that the Atlantic population and perhaps the world population are connected and may constitute a single population," Skomal said. "Hence, the global population of basking sharks may be even smaller than ...

Better water use could reduce future food crises

... over three billion of the current world population are estimated to suffer from severe water ... showed that by 2050, 59 percent of the world population will face blue water shortage, and 36 percent ... shortage. This means that 36 percent of the world population will live in countries that will not have enough ...

Tiny differences in our genes help shed light on the big picture of human history

... ), helps shed light on times when the human population moved close to extinction and helps scientists ... helpful to know the demographic history of the population being studied. Accurate estimates of population events help inform the search for mutations that ...

Diet secrets of 'the Royals'

... the 800-member Samburu-Buffalo Springs elephant population are most likely to conceive. "That's ... The findings provide a hint that as Kenya's population continues to burgeon, and as global warming ... will respond to changes in land use as human population increases and there is increased competition for ...

Altered gene can increase risk of schizophrenia

... on its presence in the genes of a Canadian study population of 24 families where multiple individuals had ... The frequency of this variant in the general population is more than 40 percent. Approximately 1 percent of the general population has schizophrenia but not all of those with the ...

Bone deformities linked to inbreeding in Isle Royale wolves

... extreme inbreeding of the small, isolated wolf population at the island National Park in northern Lake ... counted 24 wolves, close to the long-term average population size, but two of the four wolf packs did not have ... packs. The researchers estimated the moose population at 530 this winter, a decrease from last year and ...

Common gene variants influence risk factor for sudden cardiac death

... prolongation of the QT interval in the general population is a potent and heritable risk factor for sudden ... tested together. The top 20 percent of the population with the highest genotype scores had 160 to 210 ... QT interval compared to the 20 percent of the population with the lowest scores. They also had around 10 ...

Keeping golf courses green when fresh water is limited

... LAS VEGASExplosive population growth in southern Nevada has placed increasing ... residents lived in southern Nevada, where the population approached two million people. The dual concerns of this population boom and a climate that features frequent severe ...

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

... variability. Overall, a quarter of the world's population depends directly on these degrading areas. The ... Laos, Korea and Indonesia. In terms of the rural population affected, the greatest numbers are in China, with ... correlations between degrading land and rural population density and with biophysical factors such ....

Information warfare in the 21st century: Ideas are sometimes stronger than bombs

... the terrorists are those who are injuring the population that they claim to be defending. Another technique is to identify the point of weakness between the population and the organization, and use that to our ... are lacking, the army provides assistance for the population - and we point out that it does so while the ...

Harmonizing biobank research: An achievable world-wide goal

... Epidemiological Biobanks in Europe), P3G (Public population Project in Genomics) and BBMRI (Biobanking and ... and societal issues. P 3 G The Public population Project in Genomics (P 3 G) is a not-for-profit ... collaboration between researchers in the field of population genomics. It has been launched in order to ...

Climate change affecting Europe's birds now, say researchers

... of Birds have shown a strong link between recent population changes of individual species and their projected ... Ornithology, and Statistics Netherlands. European population data for birds was compiled by The Pan-European ... Common Bird Monitoring Scheme. When a bird's population changes in line with the projection, the ...

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

... of Kansas and Oklahoma are experiencing serious population decline in the face of extensive land-management ... of its size, the Flint Hills is assumed to be a population stronghold for grassland birds," said Kimberly ... from elsewhere to give the appearance of a stable population year after year. This is especially true if the ...

Atmospheric scientists trace the human role in Indonesian forest fires

... to drought, but also to changes in land use and population density, according to a new study in Nature ... to rapid increases in deforestation and population growth. The resulting occurrences of haze ... to large fires even in dry years until population density and deforestation increased substantially ...

Queen's University Belfast improves Malaysian public health

... announced the establishment of the Centre for population Health in Malaysia. This is the first Centre ... cancer registry and other related research on population health will be among the core functions of the ... medical database of its people and provides population health solutions in the future. In today's ...

Wildlife Conservation Society helps Cameroon create new national park

... Gorilla population surveys, conducted by the Wildlife Conservation ... planning, including the first gorilla population surveys in the former forest reserve in 2002 by ... area for protection, containing the most northern population of western lowland gorillas. "Deng Deng ...

Threats to biodiversity rise in the world's Mediterranean-climate regions

... and U. C. Davis analyzed changes in land use and population density in the world's five mediterranean-climate regions. Overall, population density and urban areas increased in these ... while agricultural areas spread by 1 percent. population grew by over 34 million people from 1990 to 2000, ...

Federal scientists recognized for contributions to knowledge of bird ecology and habitat

... a team of scientists and managers to monitor the population and habitat of the murrelet. The results of ... and managers to carry out long-term studies of population trends of the owl. The work of this group has ... including wildlife monographs reporting on population trends and dispersal, as well as papers on diet, ...

Biologists solve mystery of black wolves

... basis." Yellowstone is home to the wolf population about which the most is known, Wayne said. Their ... wolves of Yellowstone represent an unparalleled population for studying the inheritance of traits," Wayne ... of coat color throughout the entire wolf population and document that coat color is a trait inherited ...

UGA study may give hope that ivory-billed woodpeckers still around

... of several scientists on the team who conducted a population viability analysis, which was funded by the U.S. ... search effort for the elusive bird and a population viability analysis, which, among other things, assesses the population size and other factors required for ...

Evolutionary process more detailed than previously believed, study shows

... model adopts a linear approach, theorizing that a population acquires such adaptations successively, one after ... occurring. But rather than one segment of the population continuing to shrink until it was completely ... shows these things have adapted and seeing their population thrive and expand from this adaptation. This is ...

Jumbo-sized discovery made in Malaysia

... Wildlife and National Parks (DWNP) reveals that a population of endangered Asian elephants living in a ... The new results confirm the largest-known population of elephants remaining in Southeast Asia. The ... team counted elephant dung piles to estimate population sizea scientifically proven technique that ...

As super-predators, humans reshape their prey at super-natural speeds

... likely because we take such high proportions of a population and target the largest," said Darimont. "It's an ... abundance of food being shared by a much smaller population of fish. Whereas such plastic changes might be ... Commercial fisheries often take half a given population per year; by contrast, competing natural ...
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