Sustaining Biodiversity The Species Approach：维持生物多样性的物种方法

e endangered in the near future.?Some species have characteristics that make them especially vulnerable to ecological and biological extinction.Characteristics that can put certain species in greater danger of extinctionFig. 8-3, p. 154CharacteristicExamplesLow reproductive rateBlue whale, giant panda, rhinocerosSpecialized nicheBlue whale, giant panda, Everglades kiteNarrow distributionElephant seal, desert pupfishFeeds at high trophic levelBengal tiger, bald eagle, grizzly bearFixed migratory patternsBlue whale, whooping crane, sea turtleRareAfrican violet, some mercially valuableSnow leopard, tiger, elephant, rhinoceros, rare plants and birdsLarge territoriesCalifornia condor, grizzly bear, Florida pantherPercentages of various species threatened with extinction due to human activities