Sentences with phrase «viable populations»

They need larger habitat areas to maintain viable populations.

It is believed to be extinct in the wild with no known viable populations remaining in their natural habitat.

-- Many species can not have viable populations consisting of a single male and a single female.

If viable populations are to be sustained, conservation measures to reduce mortality from turbine collisions likely need to be initiated soon.

Limiting other stressors and impacts, for instance fishing mortality, may be one way to help maintain viable populations of sensitive species and to reduce the impacts of acidification on assemblage structure and ecosystem function.

Bradshaw and his colleagues recently surveyed studies of 212 vertebrates and found that the typical minimum viable population size required for a species to survive long - term is about 5,000 individuals.

But so are wild reindeer — and the Norwegian government thinks the same, evidenced when it recently rejected construction of a wind farm over concerns that it could harm the animals in an area that is home to the last remaining viable populations in Europe, reports Reuters.

Collaborating with management and regulatory agencies, farmers and ranchers to ensure that appropriate habitat, knowledge and management capacity are available to support viable populations of sage grouse, Columbia sharp - tailed grouse and pygmy rabbits.

«The strategy for establishing viable populations is to consider how they reproduce.»

They define this as «a seamless mosaic of forests and associated natural treeless ecosystems that exhibit no remotely detected signs of human activity or habitat fragmentation and are large enough to maintain all native biological diversity, including viable populations of wide - ranging species».

Furthermore, the researchers suspect that even if habitat destruction were to halt in these areas, the remaining large animal species would have little chance of maintaining viable populations beyond the next few decades.

Since then, the U.S. and Mexican governments have worked to rebuild a genetically viable population through captive breeding and reintroducing wolves to the wild.

Only time will tell how well local people, researchers and conservationists are able to deal with each of thr threats in order to ensure snow leopard viable populations in the wild long term.

From the jungles of Papua New Guinea to the slopes of the Andes, Kris has identified some 100 new mammal species and documented viable populations of animals previously thought to be in major decline or even extinct.

This is a volunteer conservation program established in 1985 to protect the monkeys, which are among one of the few viable populations of their kind in Central America.

Efforts by conservationists have helped the species rebound to a more viable population.

When peat that has been frozen for thousands of years thaws, it still contains viable populations of methanotrophic bacteria [Rivkina et al., 2004] that begin to convert the peat into CO2 and CH4.

The birds abandon breeding areas near tall structures, and the disturbance and fragmentation of their habitat further makes it difficult for them to establish viable populations.

a seamless mosaic of forests and associated natural treeless ecosystems that exhibit no remotely detected signs of human activity or habitat fragmentation and are large enough to maintain all native biological diversity, including viable populations of wide - ranging species».

Although the new fly is a hybrid between two existing species, it can mate with neither one and maintains viable populations of its own.

«If we succeed with our project in introducing a new, viable population of alligator snapping turtles, it's likely that no one will see them,» Phillips said.

But «the continued deterioration of the Yangtze ecosystem,» he says, «means that the species has no hope of even short - term survival as a viable population in the river if it has not already disappeared.»

If we can get a viable population going, these will be spread to other botanical gardens and then some plants might be sold,» Smit adds.

They concluded that Lake Vostok may support a viable population of microbes.

«Today, we have 700 to 750 individuals of the species,» says Martin, «but if action is not taken now, the white - headed duck could soon be outbred by the invading ruddy duck, and wiped out in Spain, the only Western European country with a viable population.»

Once we've arrived at our new home we need to grow crops and establish a viable population.

Ballast can be exchanged in open seas, and while this can flush out 95 per cent of microorganisms, a viable population remains.

They may need a lot of energy, such as that found a large wood fall, to support a viable population.»

Therefore unique diversity is not evolutionarily significant for discovering the traits that make a passenger pigeon (though they will be important later for developing genetic diversity in a viable population).

The Passenger Pigeon's genome may hold the answers to the true minimum population size necessary for a viable population.

Students are challenged to grow the mountains to their maximum height (corresponding to the maximum change in light level on either side of the chain) while maintaining a viable population of plants on each side.

In December 1987, the Conservancy performed one of its first breed rescues when it removed a viable population of Santa Cruz sheep from Santa Cruz Island.

But even at that extreme, there would be a viable population size.

UC Davis doctoral student Taylor Chapple notes,» [T] his estimate only represents a single point in time; further research will tell us if this number represents a healthy, viable population, or one critically in danger of collapse, or something in - between.»

Therefore unique diversity is not evolutionarily significant for discovering the traits that make a passenger pigeon (though they will be important later for developing genetic diversity in a viable population).

As a nation we need to focus on preserving suitable corridors for wildlife before suburban sprawl isolates roaming species to an area too small to remain a viable population.