Sentences with phrase «of wolf populations»

International Wolf Project http://www.wolf.org The International Wolf Center advances the survival of wolf populations by teaching about wolves, their relationship to wild lands and the human role in their future.

«We found that while hybridisation has not compromised the genetic distinctiveness of wolf populations, a large number of wild wolves in Eurasia carry a small proportion of gene variants derived from dogs, leading to the ambiguity of how we define genetically «pure wolves».

As part of the new deal, the Department of the Interior will conduct rigorous scientific monitoring of wolf populations across the region and solicit an independent scientific review by an expert advisory board after three years to reassess the situation.

Islands of wolf populations persist in remote highland areas surrounded by oceans of free - ranging dogs.

In the fall of 2012, Wyoming issued hunting licenses to kill about 16 percent of its wolf population.

«The human imprint is written all over the dynamics of this wolf population in recent decades».

Artist Statement «I created this artwork to document the decline of the wolf population and to show the beauty of their wildness.

Outrage as Norway plans to cull majority of its wolf population — RT Viral.

Not exact matches

Ashwin Alankar of Janus Henderson published his latest article «Brace for Steeper Yield Curves as the Wolves Return,» which highlighted grey wolf's role in maintaining a delicate balance in Yellowstone's ecosystem by keeping population of herbivores in - check, which in - turn reduced risks of overgrazing of young brush and trees in the park.

Using annual population estimates from the Russian Federal Agency of Game Mammal Monitoring database, researchers analyzed trends of eight large mammals — roe deer, red deer, reindeer, moose, wild boar, brown bears, lynx, and gray wolves — in Russia from 1981 to 2010, a time period that includes the 1991 collapse of the Soviet Union.

In places like Yellowstone and eastern Washington and Oregon, however, smaller wolf populations are too far removed from the remaining core of the species» distribution to really make a difference in controlling coyote numbers.

The analysis uncovered major changes in population growth; with the exception of wolves, all species experienced a drop in population growth rates immediately following the collapse, and three species — wild boar, moose, and brown bears — exhibited significant reductions in population growth throughout the decade following the collapse, with declines evident in 85 % or more of the study regions.

The Idaho Department of Fish and Game has proposed using helicopters to help study the wolf population in the Frank.

Washington, Oregon and Utah only have small populations of gray wolves.

The focus of my research is population structure and gene flow in North American arctic canids: grey wolves and arctic foxes.

Two of the eight populations of wolves he came to study have gone extinct in that time.

Consecutive rabies and distemper outbreaks recently cut one of the smallest known wolf populations down to two individuals, Sillero's team reported in December in Emerging Infectious Diseases.

Idaho wants to control the burgeoning wolves because the animals, though ranked as an endangered species, may have begun to make a dent in the elk population within the Frank and also in some of the cattle herds outside.

The basic plan: Distribute the oral vaccines at night once every two years, vaccinate at least 40 percent of a chosen wolf population and use motion - sensing cameras to see if each pack's high - ranking males and females — the primary pup producers — take the bait.

Officials argue that hunting has little effect on populations because many wolves die anyway of starvation or disease, and females can compensate by producing more young.

In parallel manner, the quantity of elk and moose are the limiting factor for the wolves: When the predator population runs low on food, in this case elk and moose, its population falls.

The study highlights a «useful and effective technique of reducing introgression of coyote genes into red wolf populations,» says Dave Mech, a wolf biologist and senior scientist with the Biological Resources Division of the U.S. Geological Survey in St. Paul, who was not involved with the research.

Last year, FWS biologists estimated the population of Mexican wolves at 109 animals, the highest it's been since reintroduction and double its size in 2010.

Last winter, the wolf population had swelled to 24, a surprisingly large number considering that 80 % of the island's moose had died during the particularly harsh winter the year before.

Instead of feeding deer and killing wolves, Leopold argued, people should focus on killing does to decrease the overall population.

The sterilizations are «not to control the coyote population size... it's purely to keep their DNA from being passed to a red wolf offspring,» says ecologist Eric Gese of Utah State University, Logan, a lead author of the new study and a member of the panel overseeing red wolf recovery efforts.

The same year that Creel published his study, Middleton, then a Ph.D. student at the University of Wyoming, was put in charge of an ambitious research project to investigate more directly the effects of wolves on the elk population.

After spending five years trying to find the one thing that could explain the declining elk populations, Middleton has concluded that there isn't one — there are many: Trout fishermen, bears, wolves, fish, climate change and factors yet unfound collectively shoulder the weight of that loss.

Ecosystems are delicately balanced, and losing ecological roles throws a system out of whack: Think of a forest damaged when the deer population explodes because the wolves that prey on them are removed.

A combination of increasing human population density, better hunting methods and climate change may have reduced the availability of prey and pushed some wolves towards scavenging, which favoured tameness and smaller size.

And the researchers have reason to believe this change is in the works: The foxes have been outcompeted by growing populations of coyotes in the regions, which are becoming the top predators in areas where mountain lions and wolves have gone extinct.

As they traveled, dogs mingled with other populations of dogs but also with wolves, both ancestral and modern, creating a genetic potpourri.

After years of political controversy, bureaucratic turmoil, and fluctuating populations, around eighty Mexican gray wolves roam the Southwest today, more than at any time since the government reintroduced them to the wild in 1998.

The reintroduction of wolves in Yellowstone National Park had an unanticipated, positive effect on the bear population by making more berries available.

Isle Royale National Park recently affirmed that as long as a breeding population of wolves exists on the island there would be no intervention in the near term.

Boyce explained this is due to an increase in the wolf population, responsible for about 70 per cent of livestock deaths tracked in the program.

During the same period, predation rates — the proportion of the moose population killed by wolves — also dropped to the lowest ever recorded, while the number of moose doubled, to approximately 1,050 moose.

Many of these wolves were still present a year later and may have rejuvenated the population, genetically speaking, about two decades after its founding.

The large - scale genomic study of the Scandinavian wolf population is reported in Nature Ecology & Evolution.

Still, according to Wolf, this association raises concern about the possibility of subsequent neurocognitive decline in this population.

It's one of the largest intact forest ecosystems left on Earth; it's actually only three or four places that have these large unfragmented habitats left and because of that it holds some of the largest populations of mammals and birds — some of the largest populations of wolves, for example, in, caribou as well as, we estimate one to three billion birds that nest there every year and that's some of the birds that are actually stopping off at Central Park.

The Center for Biological Diversity, Earthjustice, and other groups say they are particularly alarmed by the plan's goal of establishing a population of just 300 to 325 animals, and the provision that blocks the wolves from living north of U.S. Interstate 40.

The dwindling animal populations rebounded as human industry receded, and the periodic fluctuation of wolf and moose numbers began anew, continuing to this day.

The major hurdles flagged by WMI are the need for multiple wild populations, hybridization with coyotes, the integrity of the wolf genome, and land ownership patterns in wolf habitat.

The tight regulations constrained FWS's ability «to release additional wolves from captivity» and «to increase the size of the wild population,» the agency said in a press release today.

«The only other explanation is that there was a major divergence between two wolf populations at that time, and one of these populations subsequently gave rise to all modern wolves.»

For example just a small number of sea otters can determine urchin numbers, or a few grey wolves determine the size of bison, deer or elk populations.

«It is [still] possible that a population of wolves remained relatively untamed but tracked human groups to a large degree, for a long time,» adds first author of the study Pontus Skoglund of Harvard Medical School and the Broad Institute.

Populations of big carnivores such as brown bears, Eurasian lynx, grey wolves and wolverines are stable or increasing in a substantial part of Europe.

Researchers feared that the reintroduction of wolves to the area more than a decade ago was stressing out pregnant mothers, causing them to lose their babies and contributing to a declining elk population.