Bio 121 Campbell Biology Truman College
17th Edition
ISBN: 9781323670637
Author: Urry, Cain
Publisher: PEARSON
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Textbook Question
Chapter 53, Problem 53.1CR
Gray whales (Eschrichtius robustus) gather each winter near Baja California to give birth. How might such behavior make it easier for ecologists to estimate birth and death rates for the species?
Expert Solution & Answer
Summary Introduction
To determine: The way in which the reproductive behavior of gray whale species “Eschrichtus robustus” in California bay helps ecologists to estimate birth and death rates for the species.
Introduction: The study of change in population is termed as population dynamics. Population ecology can be defined as both, the number of individual for a particular species in an area and dynamics of the population.
Explanation of Solution
The birth rate and death rate of an organism depends upon the number of population present in a given time period. The increase in the population size leads to an increase in the number of species of the gray whale. Ecologists can estimate the birth rates by counting the number of young born per Eschrichtus robustus in a given time period. Similarly, they can estimate the death rate by observing the number of deaths in their population.
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Chapter 53 Solutions
Bio 121 Campbell Biology Truman College
Ch. 53.1 - DRAW IT Each female of a particular fish species...Ch. 53.1 - Prob. 2CCCh. 53.1 - Prob. 3CCCh. 53.2 - Explain why a constant per capita rate of growth...Ch. 53.2 - Prob. 2CCCh. 53.2 - Prob. 3CCCh. 53.3 - Explain why a population that fits the logistic...Ch. 53.3 - WHAT IF? Given the latitudinal differences in...Ch. 53.3 - Prob. 3CCCh. 53.4 - Identify three key life history traits, and give...
Ch. 53.4 - Prob. 2CCCh. 53.4 - Prob. 3CCCh. 53.5 - Prob. 1CCCh. 53.5 - WHAT IF? Suppose you were studying a species that...Ch. 53.5 - Prob. 3CCCh. 53.6 - How does a human population's age structure affect...Ch. 53.6 - How have the rate and number of people added to...Ch. 53.6 - WHAT IF? Type "personal ecological footprint...Ch. 53 - Gray whales (Eschrichtius robustus) gather each...Ch. 53 - Suppose one population has an r that is twice as...Ch. 53 - Prob. 53.3CRCh. 53 - Prob. 53.4CRCh. 53 - Density-dependent factors regulate population...Ch. 53 - The human population is no longer growing...Ch. 53 - Population ecologists follow the fate of same-age...Ch. 53 - A population's carrying capacity (A) may change as...Ch. 53 - Scientific study of the population cycles of the...Ch. 53 - Analyzing ecological footprints reveals that (A)...Ch. 53 - Based on current growth rates, Earth's human...Ch. 53 - The observation that members of a population are...Ch. 53 - According to the logistic growth equation...Ch. 53 - During exponential growth, a population always (A)...Ch. 53 - Which of the following statements about human...Ch. 53 - Prob. 10TYUCh. 53 - EVOLUTION CONNECTION Contrast the selective...Ch. 53 - Prob. 12TYUCh. 53 - Prob. 13TYUCh. 53 - WRITE ABOUT A THEME: INTERACTIONS In a short essay...Ch. 53 - SYNTHESIZE YOUR KNOWLEDGE Locusts (grasshoppers in...
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