| 31. | The rodent community, particularly of the Afro-alpine plateau are keystone species in the Bale Mountains National Park.
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| 32. | This led to the conclusion that " Pisaster " was a keystone species in that food web.
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| 33. | It is a keystone species in its habitat and can significantly affect water quality and phytoplankton communities.
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| 34. | "We consider the alligators a keystone species, " said Tom Armentano, a researcher at Everglades National Park.
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| 35. | If such keystone species are lost, biologists say, the rest of the ecosystem can begin to unravel.
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| 36. | Cushion plants have been shown to be a keystone species in the ecosystem in which they occur.
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| 37. | The wolf was the top predator in Yellowstone, and a keystone species of its ecology, until 1926.
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| 38. | Keystone species such as hornbills, parrots and birds of prey ( eagles ) are well represented in Ghana.
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| 39. | In the Pacific Northwest and Alaska, salmon are keystone species, supporting wildlife such as birds, bears and otters.
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| 40. | This direct impact of tourism can severely damage the delicate balance of the food webs and keystone species.
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