CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
11th Edition
ISBN: 9780134683461
Author: Urry
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
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.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
schedule01:14
Students have asked these similar questions
What does the high density of elephant population in an area can result?
You are surveying of the turtle species identifies several breeding populations in different habitats across the island. After a very warm summer of 2020, you observe that the hatchlings from low-elevation nests are mostly males, whereas hatchlings from higher elevations have an equal female-to-male sex ratio. As a bit more background, temperature influences the sex ratio in some turtle species, a phenomenon called temperature-sex determination (TSD). With this knowledge, you hypothesize this new turtle species exhibits TSD, and that eggs incubated at low elevations during the warm year experienced a high enough embryonic temperature to skew the sex ratio. To test this, you collect 20 newly laid eggs in early 2021 & take them back to the lab to conduct an experiment to test your hypothesis that this species exhibits TSD. Assume you know the average nest temperature in the wild, and you have access to multiple incubators
Design an experiment to test the hypothesis that this turtle…
This figure plots the breeding populations of fur seals as they
recovered from uncontrolled hunting. Based on this graph, what is
the approximate carrying capacity of the fur seal's breeding
habitat?
10
a) about 1,000 seals
b) about 5,000 seals
6.
c) about 10,000 seals
1915
1925
1935
1945
Year
Data from K. W. Kenyon et al., A population study of the
Alaska fur-seal herd, Federal Government Series:
Special Scientific Report-Wildlife 12 (1954).
© 2018 Pearson Education, Inc.
Breeding male fur seals
(thousands)
Chapter 53 Solutions
CAMPBELL BIOLOGY-W/MOD.MASTERBIOLOGY
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...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Describe an example of bioconversion. What metabolic processes can result in fuels?
Microbiology: An Introduction (13th Edition)
Johnny was vigorously exercising the only joints in the skull that are freely movable. What would you guess he ...
Anatomy & Physiology
True or false? Some trails are considered vestigial because they existed long ago.
Biological Science
Fibrous connective tissue consists of ground substance and fibers that provide strength, support, and flexibili...
Human Biology: Concepts and Current Issues
Define histology.
Fundamentals of Anatomy & Physiology (11th Edition)
22. The seeds in bush bean pods are each the product of an independent fertilization event. Green seed color is...
Genetic Analysis: An Integrated Approach (2nd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Define and distinguish among native, nonnative, indicator, and keystone species and give an example of each. What is an invasive species?List six factors that threaten many species of frogsand other amphibians with extinction. Describe therole of the American alligator as a keystone species.Explain why ecologists say we should protect sharks.arrow_forwardWhich of the following best describes the data and explains the effect of the arrival of the brown tree snake on Guam’s native bird species?arrow_forwardUse the survivorship curves (A, B, and C) shown on the graph below to answer the following three questions. kx A B с Age Which curve best describes survivorship in clams? (Clams have external fertilization and free-swimming larval stages.) Curve A Which curve best describes survivorship in mice? Curve C Which curve best describes survivorship in a species, such as humans, that invests a great deal in caring for the young over a very long period of time? Curve Barrow_forward
- Discuss reasons why gray whales leave their cold-water feeding grounds during the winter season.arrow_forwardWhat is predator management? What is the linkage between the evolution of prey and predator species and how this relates to the regulation of population size? please answer botharrow_forwardCompare the survival and reproduction strategies of altricial species and precocial species. Although quite different, why are they both successful in maintaining the population of a species? ✓✓✓arrow_forward
- You are observing two different species of caterpillars feeding on green shrubs in the Sacramento Mountains. One has bright red and yellow stripes, the other is a nondescript greenish color. You hypothesize that the two species have adopted different antipredation strategies. 1) What would these two strategies be called? 2) Which species would you predict is noxious to potential predators and which species is palatable? 3) Which species would you predict would alter its behavior more in the presence of predators? Why?arrow_forwardWhat overall trend statement could you make about the impact of the brown tree snake on bird populations in Guam?arrow_forwardWhat has happened to the green anole lizard in terms of population decline? Would establing a protected area in an urban city help this species? How or why not?arrow_forward
- You are watching a documentary on television about grizzly bears in North America. The narrator is speaking over a clip of two cubs and their mother walking along a riverbank in a heavily wooded forest. She says that grizzly bear populations are rising for the first time in several decades even though deforestation is still a growing problem in North America. Which of the following could be a possible factor for the increase in the grizzly population? Loss of habitat Reduction of resources Increased industrialization Higher birth rate over death ratearrow_forwardFor various reasons, some species prefer to live on the edge of a habitat patch while others fare better if they stay near the middle of a patch. In areas with a mosaic of grassland and woodland, warbler fledglings are more likely to survive when their parents nest in the core rather than the ecotone, because the ecotone is also habitat for brown-headed cowbirds. What is the name for the behavior of cowbirds that poses a risk to warblers? Give typing answer with explanation and conclusionarrow_forwardDescribe the effects of the disappearance of beaver from an ecosystem on the wolf population.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning