| The survey identified a few keystone species that should be protected in Barbudan waters. |
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| Endangered and keystone species, like the Nilgiri tahr, constitute the basis for bio-diversity conservation. |
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| Gary Nabhan discovered ironwood's role as a keystone species in the Sonoran Desert ecosystem. |
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| Hence, the conservation of a keystone species leads to the preservation of the eco-system. |
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| The protection of keystone species is seen as a way of ensuring the protection of the majority of other species. |
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| Whitebark pines are what silviculturists term a keystone species of upper subalpine ecosystems. |
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| A keystone species in several ecosystems, the grizzly was listed in 1975 as threatened in the lower 48 states. |
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| A keystone species is one that directly impacts the balance of the ecosystem. |
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| Well, you remove a keystone species and the entire ecosystem can collapse. |
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| Detailed studies had been made by ornithologists on important keystone species like Great Pied Hornbill and Malabar Grey Hornbills in the Anamalais. |
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| This palm is considered a keystone species because it supplies fruits for birds and rodents all year and is intensively harvested for culinary purposes. |
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| From the looks of it, mistletoe is a keystone species and plays a crucial role in that forest ecosystem. |
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| Ecologically significant species tend to be keystone species that play a central role in the structure of the terrestrial food web. |
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| As evidence mounts that conserving large keystone species is necessary to maintain the food chain, another factor in their conservation has been apparent for some time. |
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| We wish to prevent a trophic cascade within our Parks by increasing the protected areas of keystone species such as wolves. |
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| Desert Antelope and gazelle are keystone species in various desert ecosystems, but have declined dramatically through the last century as a result of hunting and changes in land use, in combination with periods of drought. |
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| Some rodents are considered keystone species and ecosystem engineers in their respective habitats. |
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| They are a keystone species, providing food for the foxes and coyotes and shelter for others: many ground dwellers make homes out of the rats' burrows, which pockmark the plain. |
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| One example of a keystone species in the NWT is the barren-ground caribou, which covers large areas of tundra and is preyed upon by wolves, grizzly bear and golden eagles and harvested by virtually all communities. |
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| But nothing better protects our ecosystems than keystone species. |
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| In a healthy marine ecosystem, oysters are a keystone species. |
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| One of the central keystone species in the Arctic is a small Arctic cod. |
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| Removal of keystone species and apex predators leads to simplification of the marine ecosystem, reduced biodiversity and reduced ecosystem functionality. |
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| Let us learn from the mistakes that the rest of the world has made, and create policy to prevent the loss of this keystone species from our natural heritage. |
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| Developing indicators will, for example, require more research into such areas as wildlife at risk, keystone species, ecological processes, and the stresses acting on specific ecosystems. |
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| Within national parks, wolves are recognized as a keystone species influencing numerous factors that affect ecological integrity including prey populations and vegetation conditions. |
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| The loss of keystone species or functional groups of plants could profoundly influence the degree of vulnerability of native communities to invasion. |
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| Beaver are a keystone species helping support the ecosystem of which they are a part. |
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| In the Pacific Northwest and Alaska, salmon are keystone species, supporting wildlife such as birds, bears and otters. |
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| The polar bear is the apex predator within its range, and is a keystone species for the Arctic. |
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| The latest threat to the forest emerged in 2002 when another Asian woolly adelgid that kills hemlock, another keystone species of the forest, entered the park. |
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| Porpoises are very sensitive to anthropogenic disturbances, and are keystone species, which can indicate the overall health of the marine environment. |
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| As a keystone species, oysters provide habitat for many marine species. |
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