Sentences with phrase «of breeding habitat»

Larger numbers formerly bred on the island, but the clearance of breeding habitat during World War II and dust pollution from phosphate mining have contributed to the decrease.

The loss of breeding habitat, especially milkweed, due to the increased use of genetically modified herbicide - resistant crops, is an important factor influencing the decline of monarchs in the eastern United States.

Graves believes that the common denominators of breeding habitats are dense understory vegetation, quite often impenetrable, and moist soils carpeted with leaf litter.

Not exact matches

Specifically, Commonwealth environmental water was released from Hume Dam to support in - channel, wetland and low elevation floodplain habitat along the length of the River Murray to improve the condition and promote the migration of native fish species; support waterbird habitat and breeding events; and, mobilise and export salts from the River Murray system.

improve the diversity and condition of native fish, frog and waterbird populations through maintaining suitable aquatic habitat and providing opportunities for breeding and recruitment.

«Scientific monitoring consistently shows that environmental water delivered to the Gwydir is providing food, habitat and breeding opportunities for many of the region's unique native fish, waterbirds, plants and wildlife.

Commonwealth environmental water helped maintain a mosaic of habitats including native vegetation, stimulated breeding and recruitment of several native fish, frog and turtle species, and resulted in a boom of productivity in the system.

There, you can read about Hispaniola's great biodiversity, including 30 endemic bird species; the importance of the island to birds that winter and migrate through the West Indies and breed in North America; and the critical role of shade coffee in preserving habitat on an island with a very high level of deforestation.

The key objective of this proposal is to maximise the current Murray cod spawning response by providing suitable habitat inundation and associated food resources throughout their critical breeding period (mid Oct — mid Dec).

Reasons for the higher number and species diversity of birds and bird territories on organic farms include better breeding habitats and better food conditions.

In the Western Hemisphere, traditional coffee plantations harbor a wide variety of birds, and they are crucial as wintering habitat to dozens of species of birds that breed in North America but winter in the tropics.

As farms disappear and forests return, the large swaths of hay fields and similar habitats that bobolink require for breeding and raising young continue to shrink in size and number.

As the conference title suggests, participants will learn about both high - elevation habitats and low - lying coastal islands that attract a suite of breeding, migrating, and wintering species — and thus also provide exciting birding opportunities.

Hurricane Katrina destroyed the habitat of breeding colonies in Louisiana's Pearl River Basin, for instance, but bird numbers held steady, researchers noted in the journal Forest Ecology and Management.

Piping plovers, a federally threatened species of shorebirds, are likely losing wetland breeding habitat in the Great Plains as a result of wetland drainage, climate change or both, according to a new U.S. Geological Survey study.

Piping plovers (adult pictured), a federally threatened species of shorebirds, are likely losing wetland breeding habitat in the Great Plains as a result of wetland drainage, climate change or both, according to the U.S. Geological Survey.

Trees are an ideal habitat for frogs not only because they allow them to escape from terrestrial predators, but also because their fallen leaves provide protection while the frogs are on the ground, breeding habitat and plenty of food, such as insects.

[1] An employee of Devil Ark, a protected habitat and breeding facility that houses about 130 healthy devils, cradles a resident.

Frank Thompson, a wildlife biologist with the U.S. Forest Service in Columbia, Missouri, says of Winfree's work, «It's important to understand why cowbirds prefer certain habitats to breed in — and this is going to help do that.»

Discarded pet Burmese pythons are breeding in the Everglades — and climate change could make a third of the US potential python habitat.

So any of the animals that are endangered or likely to become extinct because of habitat destruction, we're pulling them into zoospredominantly rescuing the animals that are going to die anywayand housing them, learning every single detail about how we can breed them and establishing satellite colonies of that species so that we're ready when the cure does come, when we can rebuild habitat.

Rusty Blackbird (Euphagus carolinus) populations have decreased by about 95 % in the last fifty years, but the reasons are not well understood; it doesn't help that their preferred breeding habitat, stunted conifers deep in the wetlands of the boreal forest, makes finding and studying them difficult.

«For the first time,» co-author C. Page Chamberlain of Stanford University notes, «we have evidence that it may be possible to restore breeding populations in the north by preventing habitat loss in the south, allowing us to develop an international conservation strategy for dealing with songbirds.»

Rather than searching for and counting each individual nest, researchers recorded how many oystercatchers they observed within suitable nesting habitat and then modeled the size of the breeding population from this data.

The rarity of the Swainson's warbler has long been attributed to its finicky preference for large areas of densely vegetated breeding habitat in the southeastern U.S. and wintering range in the Caribbean basin.

Its problems have not gone away, and the population is now inbred, but a combination of measures including a captive breeding programme, habitat restoration and predator control are building up numbers.

Moreover, different species of abalone spawn in the open sea but, despite overlapping habitats and breeding seasons, hybrids rarely occur,» says Professor Jovine.

But there are many unknowns about the current status of 11 species of marine mammals who depend on Arctic sea ice to live, feed and breed, and about how their fragile habitat will evolve in a warming world.

The yearlong trial, several years in the planning, will track 12 captively bred juvenile tortoises released to each of two sites roughly 250 kilometers south of their native habitat on the outskirts of Perth, Australia.

Scientists studying whether wildlife can adapt to climate change should focus on characteristics such as what they eat, how fast they breed and how well they survive in different habitats rather than simply on how far they can move, a conservation biologist at the University of Exeter says.

To figure out if tropical milkweed is increasing OE infections among monarchs, Satterfield enlisted scientists and volunteers to help her sample thousands of butterflies at breeding sites in the United States, as well as in their winter habitat in Mexico.

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.

As this species only breeds in bamboo, unregulated overharvesting of bamboo for paper and pulp may destroy breeding habitats and have a negative impact on the long - term viability of populations.

According to the U.S. Fish and Wildlife Service (USFWS), panthers require large areas of contiguous habitat: Each breeding unit of one male and two to five females requires some 200 square miles of territory to thrive.

«This demonstrates that while wood thrushes are sensitive to breeding forest fragmentation, it is not the main cause of declines, rather the loss and / or degradation of habitat in the winter range in Central America is the culprit,» Taylor said.

They found that there are now only two habitats large enough to host more than 30 breeding females, an indicator of viable tiger populations over the long term.

«Understanding the complexity of toad breeding habitat is critical to the conservation of the species,» said Stephanie Barnes, an aquatic biologist on the Sierra National Forest, where 10 of the research meadows were located.

«If you don't have the right kind of pool habitat for adults to select for breeding or to sustain the development of tadpoles through metamorphosis, it doesn't matter how hard you work to save the species.»

«An early warning of disease outbreak can help local authorities and community to implement preventive measures such as eliminating mosquito breeding habitats to control or even prevent the outbreak from happening,» says Yien Ling Hii.

Success for biologists supervising a captive breeding programme for one of Brazil's most endangered primates has turned out to be bittersweet: they have bred more monkeys but have nowhere to release them because the animal's natural habitat has been all but destroyed.

The authors point out that although conservation and breeding work in the world's zoos is an important effort, it should not take focus from the needed efforts to preserve the natural habitats of endangered animals.

Christopher Peck and colleagues used GPS telemetry data from males like this one to predict the behavior and habitat selection of bears exploring landscapes outside the Greater Yellowstone Ecosystem, on journeys that could bring them into contact with breeding grizzly populations in the Northern Continental Divide Ecosystem, and vice versa.

It «will assess at - sea habitat use and migration paths of adult brown pelicans that breed in the SAPA and, should energy development occur there in the future, be used to map potential risk areas,» Jodice said.

With an effective breeding population of about 2,500, numerous threats face this irreplaceable cat, ranging from illegal hunting to habitat loss and our rapidly changing climate.

Passenger pigeons, for example, will initially be bred in captivity by zoos, then placed into netted woods, and then finally re-introduced to portions of their original habitat — America's eastern deciduous forest.

The paucity of data regarding population status of emperor penguins is largely due to the logistical difficulties of accessing potential emperor penguin breeding habitat in areas of Antarctica that are not in close proximity to research stations.

Both generally and in relation to their chosen animal, children consider how habitat, conditions and human activity contribute to the numbers of breeding animals.

Likewise, bringing environmental concerns, habitat destruction and breeding programmes in the face of near extinction in the wild have brought the reality of the world that we live in to life in unprecedented ways at ZSL London Zoo.

To ensure that these smaller breeds of hamsters and mice can easily forage through their environment, the tubes in this habitat are narrower, thereby facilitating their exploring throughout their home.

Destroying any mosquito breeding habitats by removing all potential sources of stagnant water