BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
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Chapter 58, Problem 3S
Summary Introduction
To discuss:
The difference between the global decline and the normal species extinction.
Introduction:
The extinction of the species might occur because of many reasons such as the overexploitation, habitat loss, ecosystem interactions, catastrophic disturbances, pollution, and loss of
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Chapter 58 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 58.1 - Describe the history of extinction through time.Ch. 58.1 - Prob. 2LOCh. 58.2 - Prob. 1LOCh. 58.2 - Prob. 2LOCh. 58.3 - Prob. 1LOCh. 58.3 - Explain how these causes can interact to bring...Ch. 58.4 - Prob. 1LOCh. 58.4 - Describe the potential roles of natural selection...Ch. 58.4 - Prob. 3LOCh. 58.5 - Prob. 1LO
Ch. 58.5 - Prob. 2LOCh. 58.5 - Prob. 3LOCh. 58 - If we assume that population density is a good...Ch. 58 - Prob. 2DACh. 58 - Would the extinction rate increase if an area were...Ch. 58 - Prob. 4DACh. 58 - Why do population density and growth rates differ...Ch. 58 - Why might whale populations fail to recover once...Ch. 58 - Why do small populations lose genetic variation?Ch. 58 - Prob. 1UCh. 58 - The economic value of indirect ecosystem services...Ch. 58 - The amphibian decline is best described as a....Ch. 58 - Prob. 4UCh. 58 - When populations are drastically reduced in size,...Ch. 58 - A captive-breeding program followed by release to...Ch. 58 - Historically, island species have tended to become...Ch. 58 - Ninety-nine percent of all the species that ever...Ch. 58 - To effectively address the biodiversity crisis,...Ch. 58 - The introduction of a nonnative predator to an...Ch. 58 - If 99% of the species that ever existed are now...Ch. 58 - Prob. 2SCh. 58 - Prob. 3SCh. 58 - Prob. 4SCh. 58 - Prob. 5S
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- Ecologists use a rank-abundance curve to display relative species abundance, which is a component of biodiversity. It can also be used to demonstrate species richness and evenness. Figure 1 shows the rank- abundance curve for caddisflies (Order Trichoptera) of two aquatic habitats in northern Portugal (data from L.S.W. Tera). Pollution of streams, on the other hand, reduces the diversity of Trichoptera and several other groups of stream insects, reducing both species richness and species diversity. Interpret why those happened. These rank-abundance curves show that the mountain stream caddisfly community has higher species richness and greater species evenness. 0.1 - Mountain stream 0.01 Greater richness and species evenness 0,001 Coastal ponds 0.0001 20 40 60 80 Abundance rank Figure 1: Rank-abundance curve for caddisflies (Order Trichoptera) of two aquatic habitats in northern Portugal (data from L.S.W. Tera). Proportional abundancearrow_forwardWe (humans) do not have any ethical burden to worry about other species because extinction is a natural process. True or False?arrow_forwardWhich of the following scenarios best explains how resource partitioning can lead to adaptive radiation? The lack of competition between individuals leads to better survival and reproduction rates. The utilization of different resources requires different adaptations, selecting for different traits. The lack of competition leads to a more balanced ecosystem, resulting in more offspring. There is no connection between adaptive radiation and the resource partitioning in nature.arrow_forward
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