CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
3rd Edition
ISBN: 9780136811206
Author: Urry
Publisher: SAVVAS L
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Chapter 41.4, Problem 3CC
WHAT IF? Based on MacArthur and Wilson’s island equilibrium model, how would you expect the richness of birds on islands to compare with the richness of snakes and lizards? Explain.
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Students have asked these similar questions
. Simulations 4-6 had lower density of birds (more spacing), how did this influence their ability to escape predation? With more spacing, which number of Junco’s was most advantageous (4, 8, and 16)? Ecologically explain this result.
If this flock of birds occurred in an area with low food availability what flock density would you predict? Explain how food availability impacts flock size/competition.
Was there a relationship between prop. Vigilance (proportion of birds looking up right before Hawk attack) and the rate at which they escaped predation?
Was there a relationship between Mean vigilance (average number of birds looking up each tick) and the rate at which the Junco’s the escaped predation? Was there a relationship between Mean vigilance and the number of birds in the flock?
Think about a predator-prey system that perfectly follows Lotka-Volterra dynamics.
The search efficiency parameter (a) represents how quickly the predator finds and
kills its prey. What would happen if most the predator population had a parasite that
made them less effective predators? Infected animals find and kill prey less
frequently (that is, the parasite caused the value of the search efficiency parameter
to decline).
the populations would still cycle; the amplitude of prey and predator would
increase
Othe populations would no longer cycle; the prey would increase and the predator
would go extinct
the populations would no longer cycle; the prey would go extinct and the
predator would increase
the populations would still cycle; the amplitude of prey and predator would
decline
the predator and prey populations would no longer cycle; the parasite and the
predator populations would cycle instead
Discuss the pros and cons,in energetic terms,of (i) being a generalist as opposed to a specialist predator, and (ii) being a sit–and –wait predator as opposed to an active forager?
Chapter 41 Solutions
CAMPBELL BIOLOGY IN FOCUS-TEXT,AP ED.
Ch. 41.1 - Explain how interspecific competition, predation,...Ch. 41.1 - According to the principle of competitive...Ch. 41.1 - MAKE CONNECTIONS Figure 22.13 illustrates how a...Ch. 41.2 - What two components contribute to species...Ch. 41.2 - How is a food chain different from a food web?Ch. 41.2 - WHAT IF? Consider a grassland with five trophic...Ch. 41.2 - MAKE CONNECTIONS Rising atmospheric CO2 levels...Ch. 41.3 - Why do high and low levels of disturbance usually...Ch. 41.3 - During succession, how might the early species...Ch. 41.3 - WHAT IF? Most prairies experience regular fires,...
Ch. 41.4 - Describe two hypotheses that explain why species...Ch. 41.4 - Describe how an islands size and distance from the...Ch. 41.4 - WHAT IF? Based on MacArthur and Wilsons island...Ch. 41.5 - What are pathogens?Ch. 41.5 - Prob. 2CCCh. 41 - The feeding relationships among the species in a...Ch. 41 - Prob. 2TYUCh. 41 - Prob. 3TYUCh. 41 - Community 1 contains 100 individuals distributed...Ch. 41 - Prob. 5TYUCh. 41 - SCIENTIFIC INQUIRY An ecologist studying plants in...Ch. 41 - FOCUS ON EVOLUTION Explain why adaptations of...Ch. 41 - FOCUS ON INFORMATION In Bateslan mimicry, a...Ch. 41 - Prob. 9TYU
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