Cambell Biology 11e Vol1 For Utah Valley University Ch 1-25
11th Edition
ISBN: 9781323691519
Author: Urry
Publisher: PEARSON
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Chapter 54.2, Problem 4CC
MAKE CONNECTIONS Ø Rising atmospheric CO2, levels lead to ocean acidification (see Figure 3.12) and higher ocean temperatures, both of which can reduce krill abundance. Predict how a drop in krill abundance might affect other organisms in the food web shown in Figure 54.15. Which organisms are particularly at risk? Explain.
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OBSERVATIONS
• Sea otters feed significantly on sea urchins, often keeping urchin abundance 'in check'.
• Sea urchins feed heavily on kelp, decimating kelp forests when urchin abundance is high.
• Kelp forests protect the shoreline from coastal erosion by buffering wave action.
• Orcas have been observed feeding on sea otters in the kelp forests of western Alaska.
Table 1. Hypothesizing the relationship(s) between orcas, otters, urchins, kelp, and erosion.
↑ = increasing; V = decreasing
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sea urchins
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sea urchins
kelp
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orcas
sea otters
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orcas
sea otters
Choose One:
kelp
coastal erosion
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kelp
coastal erosion
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sea urchins
coastal erosion
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sea urchins
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sea otters
coastal erosion
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sea otters
coastal erosion
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orcas
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Below is a diagram of a complex food web. Match the removal of an individual species with the
result in the food web.
Mackerel
Tuna
Krill
Seal
Herring
Seals are hunted to local extinction in this
community
Phytoplankton populations crash because an
herbicide leaked into the water
The dogfish population is decimated by a
disease
Dogfish
Plankton
[Choose ]
[Choose ]
Cod
[Choose ]
Scallop
>
>
What does the fishing-down-the-food-web hypothesis predict?
The lowest landings have the lowest trophic levels
The lowest landings have the highest trophic levels
None of the options are correct
The highest landings have the lowest trophic levels
The highest landings have the highest trophic levels
In the movie regarding lactose intolerance researchers examine what type of artifacts to determine if milk was in the diets of ancient settlements across Europe and Africa?
None of the options are correct
Shovels with cow feces DNA
Paintings on cave walls
Glass cups with milk residue
Pottery pots and animal milk fats
Chapter 54 Solutions
Cambell Biology 11e Vol1 For Utah Valley University Ch 1-25
Ch. 54.1 - Explain how competition, predation, and mutualism...Ch. 54.1 - According to the principle of competitive...Ch. 54.1 - MAKE CONNECTIONS Figure 24.14 illustrates how a...Ch. 54.2 - What two components contribute to species...Ch. 54.2 - How is a food chain different from a food web?Ch. 54.2 - Prob. 3CCCh. 54.2 - MAKE CONNECTIONS Rising atmospheric CO2, levels...Ch. 54.3 - Why do high and low levels of disturbance usually...Ch. 54.3 - Prob. 2CCCh. 54.3 - WHAT IF? Most prairies experience regular fires,...
Ch. 54.4 - Describe two hypotheses that explain why species...Ch. 54.4 - Prob. 2CCCh. 54.4 - WHAT IF? Based on MacArthur and Wilson's island...Ch. 54.5 - What are pathogens?Ch. 54.5 - WHAT IF? Rabies, a viral disease in mammals, is...Ch. 54 - Interspecific interactions affect the survival and...Ch. 54 - Based on indexes such as Shannon diversity, is a...Ch. 54 - Is the disturbance pictured in figure 54.25 more...Ch. 54 - How have periods of glaciation influenced...Ch. 54 - Prob. 54.5CRCh. 54 - Prob. 1TYUCh. 54 - The principle of competitive exclusion states that...Ch. 54 - Based on the intermediate disturbance hypothesis,...Ch. 54 - According to the island equilibrium model, species...Ch. 54 - Prob. 5TYUCh. 54 - Prob. 6TYUCh. 54 - Prob. 7TYUCh. 54 - The most plausible hypothesis to explain why...Ch. 54 - Community 1 contains 100 individuals distributed...Ch. 54 - Prob. 10TYUCh. 54 - EVOLUTION CONNECTION Explain why adaptations of...Ch. 54 - Prob. 12TYUCh. 54 - WRITE ABOUT A THEME: INTERACTIONS In Batesian...Ch. 54 - Prob. 14TYU
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