Sentences with phrase «wolf populations»

In stark contrast, wolf populations increased by more than 150 % between 1992 and 2000.

He says the findings could be used to track and manage wild wolf populations better, and help mitigate conflict with farmers.

The Scandinavian wolf population was founded in the 1980s by only two individuals.

Chris Lucash spent close to three decades working with the endangered red wolf population in North Carolina.

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

With a smaller number of males than females being involved in the formation of most breeds, this drastically differs from the breeding patterns in wild gray wolf populations where both sexes have similar contributions.

Among other things, scientists are now trying to determine whether there is a red wolf population size that could persevere alongside the coyotes without human management, and whether there is more suitable habitat than the Albermarle Peninsula.

Endangered status will continue in states where wolf populations remain in jeopardy

This suggests that the definition of genetically «pure» wolves can be ambiguous and identifying admixed individuals can be difficult, implying that management strategies based on removal of suspected hybrids from wolf populations may be inefficient.

«Instead, our study has highlighted a need to reduce the factors which can cause hybridisation, such as abundance of free - ranging dogs, small wolf population sizes, and unregulated hunting.»

Reason is that the American Natives» dogs intermingled with local wolf populations, thereby contributing to gene pools along the divide till the settlers and the army destroyed all the natives and their dogs in most tragic of the world events.

Besides defending wolves in the Great Lakes region, the Center has an important campaign to spur true recovery for all gray wolves, in 2010 filing a scientific petition and notice of intent to sue to compel the Obama administration to develop a national recovery plan that would establish wolf populations in suitable habitat in the Pacific Northwest, California, southern Rockies, New England and Colorado Plateau.

1973 Vancouver Island's wolf sighting program started with a count of 37 wolves, 1976 Vancouver Island Wolf Populations had seemed to rebound with a count of 88 wolves, and in 1977 they were removed from the provincial Threatened and Endangered Species list.

As seen in the diagram below, moose populations rose but also ebbed and flowed inversely with wolf populations.

But regardless of whether the presence of more wolves helps or hurts other predators, that effect is likely dampened when wolf populations are fragmented.

Over the last 20 years, two Ethiopian wolf populations have died out; another disappeared early in the 20th century, historical evidence suggests.

The conservationists» primary concern had been that certain states where the wolves now range (thanks to reintroduction efforts) did not have large enough wolf populations or sufficient statewide protections to ensure their rebound would continue.

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.

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.

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.

According to FWS and independent scientists, such releases are critical for diversifying the gene pool of the increasingly inbred wolf population.

Most conservation biologists and locals assumed Middleton's research would provide the evidence state and federal agencies needed to support controlling the problematic wolf populations in Wyoming.

Wolf populations on the island, once numbering about 50, are at their lowest level since the study began in 1958.

«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.»

Dalén considers this second explanation less likely, since it would require that the second wolf population subsequently became extinct in the wild.

Dogs may have been domesticated independently in Asia and Europe from two separate wolf populations, according to a new study led by the University of...

May 5, 2010 — A «conservation assessment» for the Mexican gray wolf, released by the U.S. Fish and Wildlife Service, pointed to the urgency in reforming the Mexican wolf reintroduction project and developing an up - to - date Mexican wolf recovery plan that includes recovery criteria, to guide establishment of additional wolf populations.

August 11, 2009 — The Center petitioned the U.S. Fish and Wildlife Service to formally separate the Mexican gray wolf from other U.S. wolf populations and list it under the Endangered Species Act as either an endangered subspecies or a «distinct population segment.»

The anti-wolf bill would impose a politically derived cap on the struggling wolf population, meaning wolves would be killed to satisfy an arbitrary population number before the population is even out of peril.

A lot of questions remain: there are no ancient American dogs included in most of the data, and Frantz et al. suggest that the two progenitor species were descended from the same initial wolf population and both are now extinct.

This error of judgment is seen all over, from the damming of rivers (and subsequent loss of fish species) to the misguided attempts of the BLM in trying to control horse and wolf populations while ignoring natural selection).

«It's these ancient wolf populations, now extinct, probably residing in Europe, that are the direct ancestors of domestic dogs,» says Robert Wayne, a biologist at the University of California, Los Angeles.

This indicates admixture between the Taymyr wolf population and the ancestral dog population of these 4 high - latitude breeds.

The untamed forces of wilderness have reclaimed Cape Scott Provincial Park including migrating birds, a healthy wolf population and roaming black bears.

The judge found FWS to be «arbitrary and capricious» in in reversing several of its own prior conclusions, such as the the scientific study it itself had commissioned that found that there is no genetic connectivity between various wolf populations.

I suspect it is politically more convenient to blame declining moose on global warming rather than to blame natural boom and busts, rebounding wolf populations, or researcher induced casualties.

The Idaho legislature recently approved a bill that would give Gov. Otter the power to establish a state of emergency because of the rising wolf population.

When humans decimated wolf populations, the idea was that farmers would no longer lose sheep and other livestock to the dog - like predators.

The diverse genetic origin of the domestic dog has likely involved multiple gray wolf populations from breed inception that were even at later times backcrossed with wolves throughout history.

The phenomenon is seen less frequently in wild wolf populations of North America.

Since then, the local wolf population has grown tenfold.

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.

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

July 20, 2010 — The Center petitioned the Obama administration for a national recovery plan to establish wolf populations in suitable habitat in the Pacific Northwest, California, Great Basin, southern Rocky Mountains, Great Plains and New England.

«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».

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.