Sentences with phrase «only wild populations»

Prior to this study, the only wild populations found to be affected had been those in the central and eastern United States.

Not exact matches

This population was distinct from the only surviving wild horse population, that of the Przewalski's horses.

This approach is ill suited to horses as the only surviving population of wild horses has experienced a massive demographic decline in the 20th century.

The country recently ended logging of cedar trees in the tigers» habitat, which not only directly protected the big cats, it also increased the crop of cedar nuts, which fed and helped to boost the population of wild boars, the tigers» favorite prey.

Since 1982, when only 22 condors remained in the wild, a captive breeding program has brought the total population up to more than 400 birds.

While breeding and reintroduction programs are becoming more effective by providing more pandas to bolster the wild populations, conservationists believe that learning more about the importance of personality combinations in breeding success could ultimately help boost the number of pandas even further — not only in accredited zoos, but also in their habitats in China.

Without firm data on the scale of international trade in individual species, scientists can only guess at its impact on wild populations.

These are some of the questions that the U.S. Fish and Wildlife Service (FWS) says it needs to answer before it can decide whether to continue managing the only population left in the wild.

But scientists from the University of Arizona and the University of California, Berkeley, are showing that in chaparral, California's iconic shrubland ecosystem, management can devastate wild bird populations and that fire - risk reduction is only temporary.

Only then will we be able to resist the ever - growing pressures that transnational crime, corruption and increasing population place on wildlife and wild lands.

Today only 1,300 - 1,400 of the animals exist in the wild, and their populations have declined about four percent annually in recent years.

Rabinowitz acknowledges the greater urgency for captive breeding, but disputes whether the data on population size, sex ratio and breeding success in the wild are good enough to say that wild populations are in terminal decline or that captive breeding — «an absolute last resort», he says — is the only option.

I would argue it is now the only realistic way to maintain wild populations of some species.

While populations of wild animals have halved, only about 1 to 2 per cent of species have been lost so far — at least in well - studied groups such as mammals and birds.

November 28, 2012 — The Center filed suit challenging the Service's failure to respond to our 2004 petition calling for implementation of sweeping reforms in the management of the Mexican gray wolf population, which had by then grown by only three animals, leaving just 58 wolves in the wild.

They begin to notice that the town is acting peculiarly, only to come to the conclusion (in a wild bathroom fight that King instigates) that the population has been overtaken by robots «filled with blue stuff».

Rural areas are not the only concern, as rat populations in some inner cities can be far larger than in the wild.

Cats, the organizations argue, not only threaten wild bird and mammal populations, but also transmit diseases and parasites to humans, citing a variety of studies.

Wild animals are the only remaining risks in the U.S. Rabies vaccination programs for domestic animals like cats, dogs, and livestock have become the norm around the nation, which eliminated the threat from their populations.

By participating in TNR and teaching others its benefits, cat people not only help control the free - roaming cat population, but helps prevents future kittens born into the wild from imminent danger or death.

Consequently, they exist only in small isolated populations and there are less than 500 wild nesting females in total.

Increase a population of a magnificent wild animal only to go back out and murder it again for sport or «management»?

While CCD doesn't only impact honey bees, they do seem to be getting hit harder than some wild bee populations.

There, the cold water has become essential to sustaining the only wild - spawning population of spring - run Chinook salmon that still survives in California.

Throughout the latter part of the 20th century, the once - plentiful wild salmon populations in the chilly waters of the North Atlantic dwindled to dangerously low levels, affecting not only the sensitive ocean and river ecosystems of the region, but also the rural communities for whom salmon fishing is a long - held local tradition and source of income.

By 2001, the population had dwindled to just 75 marmots total, a result of logging and attacks from bigger predators, and only a third of those were living in the wild.

The only bright spot in the research seems to be that 1) there is the possibility of reintroducing captive tigers back into the wild, and 2) the researchers found that in the captive population there are unique genetic features no longer found in the wild.

Rhinos Nearing Extinction After 50 Years of Poaching Rhino poaching, often practiced to remove the animal's horn, has helped cause an extraordinary decline in populations throughout Africa and Asia — for example, there is thought to be about 130 Javan rhinos and only 300 Sumatran rhinos left in the wild.

According to the filmmakers, despite lions not being on the endangered species list, wild African populations have dwindled from 450,000 to 20,000 in only a matter of 50 years.

Combined with the only other remaining wild population of mountain gorillas, in Bwindi park in Uganga, the total number of gorillas not in captivity today stands at 786.