Sentences with phrase «fragmented habitats of»

Not exact matches

While overall habitat loss is a factor in these declines, research also indicates that even fields of sufficient size, if they are fragmented or interrupted by hedgerows or natural windbreaks, will be passed over by the birds, which may view the linear plantings as cover for predators.

The authors examine the concept and importance of maintaining connectivity (ability of wildlife populations to move among landscapes between habitat «islands» such as mountain tops, forest fragments and isolated wetlands) and corridor ecology.

The tropical forests of the Amazon, for example, were being fragmented by logging and burning, resulting in a patchwork of good and bad habitat.

The consequences of cougar overcrowding in fragmented habitat are painfully clear just 300 miles south of the Santa Cruz population, where biologists struggle to save about 12 mountain lions in the Santa Monica Mountains above LA.

The habitat that remains is indeed more fragmented, mostly because of road construction.

Roads also fragment and isolate turtle habitats by establishing a barrier to migration and the movement of individuals.

The sites — including locations in the Crane Naval Surface and Warfare Center, Big Oaks National Wildlife Refuge, and state parks — varied in habitat size and form, ranging from small to large forest fragments with varying degrees of tree cover.

That meant they missed important changes in habitat suitability and how much of the habitat, however good, is fragmented.

«Panda habitat shrinking, becoming more fragmented: Modern GIS technologies could improve our assessment of the species» extinction risks.»

«What our results then mean is that if we keep splitting natural habitats into smaller and smaller pieces, we may not only lose a lot of species from the resultant fragments, but also change the structure and functioning of local food webs.»

Restoring the connections between habitats that have been fragmented by human actions — instead of just focusing on maximizing total habitat area — is key if we want to give these butterflies a fighting chance, Oliver says.

If that climate scenario is combined with habitat restoration efforts, particularly those aimed at connecting habitats that have been fragmented by human activity, the average population has a much higher probability of survival — about 50 %.

The report identified over 40 key actions needed to boost gibbon numbers and ensure their long - term survival, including enhancing monitoring systems to keep track of remaining individuals, creating canopy bridges between forest fragments to expand their habitat range, and limiting disturbance by people in forested areas.

«Our study finds that many species have much smaller remaining ranges than is widely assumed and that most of their remaining habitat is highly fragmented,» they say.

Ensure that industry, mining, infrastructure, and rural development programs and projects are fully sensitive to the conservation needs of snow leopards and their ecosystems, do not adversely affect or fragment key populations or critical habitats, and employ wildlife - friendly design, offsets, and other mitigation tools.

On islands and in fragmented urban and suburban habitats unnaturally high densities of cats are not only capable of reducing or eradicating populations of birds and small mammals, they can out - compete native predators like foxes and weasels.

«To thrive in these [fragmented] habitats birds must have special adaptations such as the ability to respond to frequent nest predation and parasitism and to forage on a wide variety of seasonally available foods.

We are biologically homogenising the biosphere, overharvesting certain species and functional guilds, altering a range of biogeochemical cycles, fragmenting vast landscapes down to local ecological communities, and saturating the planet's surface in a number of synthetic compounds: the slash and burn approach to global habitat management.

According to Stott, the project would have fragmented «the combined contiguous habitats of the Huai Kha Khaeng Wildlife Sanctuary, the Thung Yai Wildlife Sanctuary, the Kroeng Kavia Non-Hunting Area, and the undisturbed forest across the border in Burma possibly comprise the finest remaining conservation area in the whole of mainland Asia.»

As pockets of forest habitat are isolated, their edges are exposed to harsher, brighter, drier conditions and plant and animal dispersal between habitat fragments is made more difficult; in addition, habitat fragments may be too small to sustain populations of some species.

In the Scenic Hudson study, Dr. Michael Klemens demonstrated that the original proposal's 951 widely - spaced units would be «ecologically damaging» and would cause widespread harm to important habitat and wildlife species by permanently fragmenting of over 2,200 acres of rich Hudson Valley open space.

Projected range shifts of mammal species will be limited by fragmented habitats and human pressures, as suggested in the TAR, with declines in species richness likely, especially in protected areas.

These nests tend to be constructed more often within a fragmented deciduous forest than any other type of habitat (Jessop et al, 2004).

The International Union for Conservation of Nature notes that their numbers have dropped by nearly two - thirds since the early 1970s thanks to plantation agriculture that has destroyed and fragmented their forest habitat.

The habitat in the Qinling Mountains is seriously fragmented and the population density is very high... the brown pandas could be an indication of local inbreeding.

While the habitat of the woolly mammoth is widely different from what it was thousands of years ago — fragmented by roads and cities, for instance — the habitat of the northern white rhino still exists.

That's mostly because of people, who fragmented the condor's habitat, strung up powerlines for the condors to run into, and poisoned the birds through poisoned bait, as well as carcasses contaminated with lead ammunition.