WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
5th Edition
ISBN: 9781319487317
Author: PHELAN
Publisher: INTER MAC
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Chapter 18, Problem 7SA
Summary Introduction
To analyze:
Why ecosystem disturbances that involve the loss of species are considered so devastating.
Introduction:
Once lost, a species can never exist again.
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What is a greater cause for non-threatened species, fires or pollution?
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Chapter 18 Solutions
WHAT IS LIFE ACHIEVE ACCESS ONLY >I<
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- Describe what happens to an ecosystem when a keystone species is removed.arrow_forwardDescribe the potential effects when a keystone species is removed from a community.arrow_forwardPredators that are keystone species can maintain species diversity in a community if theya) reduce the number of disruptions in the community.b) prey only on the least abundant species in the community.c) prey on the community's dominant species.d) competively exclude other predatorsarrow_forward
- How can investment in a large, charismatic species also favor the conservation of other species?arrow_forwardWhat is one way in which temporal changes in community species composition negatively impact delivery of an ecosystem service?arrow_forwardIn what ways do habitat loss, overexploitation, and invasivespecies threaten biodiversity?arrow_forward
- Which of the following statements is FALSE regarding ecological disturbances? I. Communities that experience moderate disturbances often exhibit greater species diversity than other communities. II. Moderate disturbances create openings/opportunities for colonizing species. III. Major disturbances generally allow the vast majority of species to survive in disturbed areas leaving areas quite open to large numbers of colonizing species. A) I only B) II only C) I and II only D) I, II, and IIIarrow_forwardBased on the intermediate disturbance hypothesis, a community's species diversity is increased bya) frequent immigrations of new speciesb) moderate levels of disturbancec) intensive disturbance by humansd) stable conditions with no disturbancearrow_forwardHow might your own behavior influence the influx and ecological impacts of non-native species like those listed above? Name three things you could personally do to help reduce the impacts of invasive species.arrow_forward
- Based on the intermediate disturbance hypothesis,a community’s species diversity is increased by(A) frequent massive disturbance.(B) stable conditions with no disturbance.(C) moderate levels of disturbance.(D) human intervention to eliminate disturbance.arrow_forwardWhy do moderate levels of disturbance result in an increase in community diversity?a) The resulting uniform habitat supports stability, which in turn supports diversity.b) Less-competitive species evolve strategies to compete with dominant species.c) Habitats are opened up for less competitive speciesd) Competively dominant species infrequently exclude less competitive species after a moderate disturbance.arrow_forwardGive an example of an invasive animal species. How and what are the threats they pose to the native wildlife and ecosystem in tropical countries?arrow_forward
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