Sentences with phrase «elk population»

They help keep deer and elk populations in check, which can benefit many other plant and animal species.

State officials have been concerned wolves are having a detrimental effect on elk populations pursued by sport hunters.

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.

It's more like for instance the decline in Yellowstone elk populations after wolves were reintroduced.

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.

«Once the wolves were gone, the elk population exploded and they grazed their way across the landscape killing young brush and trees.

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 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.

The elk population in Yellowstone is at the mercy of a much larger, human - altered ecosystem.

To effectively manage wolf and elk populations, the U.S. Fish and Wildlife Service and the Wyoming Game and Fish Department needed more, reliable data.

That added stress, some suggested, could also cause female elk to have fewer successful pregnancies, which would account for the elk population's dropping numbers.

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.

Wolves are a top predator - they keep the large herbivorous undulate populations in check, this in turn regulates the regrowth of tree saplings, which are otherwise overbrowsed by an unnaturally large deer and elk population.

«Deer and elk populations are thriving in this region.

For the first several years post-reintroduction, the elk population had remained stable.