BELK SCIENCE F/LIFE-MASTRG. BIOL.AC+EBK
6th Edition
ISBN: 9781323907634
Author: BELK
Publisher: PEARSON
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Chapter 16, Problem 1AAATB
Off the coast of the Pacific Northwest, areas dominated by large algae, called kelp, are common. These “kelp forests” provide homes for small plant-eating fishes, clams, and abalone. These animals in turn provide food for crabs and larger fishes. A major predator of kelp in these areas is sea urchins, which are preyed on by sea otters. When sea otters were hunted nearly to extinction in the early twentieth century, the kelp forest collapsed. The kelp were only found in low levels, while sea urchins proliferated on the seafloor. Use this information to construct a simple food web of the kelp forest. Using the food web, explain why sea otters are a keystone species in this system.
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If sea otters are removed from the kelp forest ecosystem, sea urchins will be able to live and reproduce with no main predator. Whole “herds” of sea urchins have been known to sweep across the ocean floor, gobbling kelp stands at a rate of up to 30 feet per month and leaving barren sea floor in their wake. Once barren, the entire kelp forest ecosystem is destroyed and can no longer support the diversity of life once found there. The EVIDENCE above supports the CLAIM that which animal along the Central California coast is considered a keystone species?
A researcher was interested in models and mechanisms of succession in the rocky intertidal where disturbance is frequent. They observed that in newly bare rock space created by disturbance that two species of barnacles arrived first, followed by macroalgae. Limpets are an important herbivore of macroalgae. They were interested in how species interactions would affect succession. They conducted a series of experiments removing barnacles and/or limpets and examined algal abundance to be able to fill in the attached interaction diagram. See attached image
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A researcher was interested in models and mechanisms of succession in the rocky intertidal where disturbance is frequent. They observed that in newly bare rock space created by disturbance that two species of barnacles arrived first, followed by macroalgae. Limpets are an important herbivore of macroalgae. They were interested in how species interactions would affect succession. They conducted a series of experiments removing barnacles and/or limpets and examined algal abundance to be able to fill in the attached interaction diagram. See attached image
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Chapter 16 Solutions
BELK SCIENCE F/LIFE-MASTRG. BIOL.AC+EBK
Ch. 16 - Prob. 1LTBCh. 16 - Compare and contrast the species interactions of...Ch. 16 - Prob. 3LTBCh. 16 - Current rates of species extinction appear to be...Ch. 16 - According to the generalized species-area curve,...Ch. 16 - Prob. 6LTBCh. 16 - Prob. 7LTBCh. 16 - Which of the following is an example of a...Ch. 16 - Prob. 9LTBCh. 16 - Prob. 10LTB
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