Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 27, Problem 2RQ
Summary Introduction
To describe:
The meaning of the equation for population growth using the variables
Introduction:
The changes in a population number could be due to birth rate, death rate, immigration, and emigration. Birth and immigration lead to adding individuals in a population and death and emigration leads to decrease individuals from a population. A wide gap between the birth and death rate could lead to faster growth in the rate of population.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The growth rate of a population per unit of time is calculated by using this formula: G = r x N. What is the quantity r and how is it calculated?
The per capita birth (b) and death (d) rates are measured for two populations across a range of population sizes in the attached figure. The equation for exponential growth rate is dN/dt=rN where the per capita growth rate is r=(b-d). The equation for logistic population growth rate is dN/dt=rN(1-N/K). With logistic growth, r varies as a function of the population size with density-dependent birth and/or death rates. See attached image
If the death rate decreased, what would happen to the population trajectory for population A?
a) increase faster
b) increase slower
c) decrease faster
d) decrease slower
When does the growth rate of a population following the logistic model equal zero?the logistic model is given as dN/dt = rN (1-N/K)
Chapter 27 Solutions
Biology
Ch. 27.1 - Prob. 1CSCCh. 27.1 - Prob. 1HYEWCh. 27.1 - The Return of the Elephant Seals Female elephant...Ch. 27.1 - Prob. 1CYLCh. 27.1 - describe how the growth rate interacts with...Ch. 27.1 - Prob. 3CYLCh. 27.2 - What factors might make these population data...Ch. 27.2 - Prob. 2TCCh. 27.2 - What benefits does mass emigration give to animals...Ch. 27.2 - Prob. 1CSC
Ch. 27.2 - Prob. 1CYLCh. 27.2 - Prob. 2CYLCh. 27.2 - Prob. 3CYLCh. 27.3 - Prob. 1CYLCh. 27.3 - Prob. 2CYLCh. 27.3 - Prob. 3CYLCh. 27.4 - Prob. 1CYLCh. 27.4 - Prob. 1CTCh. 27.5 - Prob. 1TCCh. 27.5 - Prob. 2TCCh. 27.5 - Prob. 3TCCh. 27.5 - describe the advances that have allowed...Ch. 27.5 - explain why rapid population growth continues...Ch. 27.5 - Prob. 3CYLCh. 27.5 - Prob. 4CYLCh. 27 - Prob. 1MCCh. 27 - Prob. 2MCCh. 27 - Prob. 3MCCh. 27 - Prob. 4MCCh. 27 - Prob. 5MCCh. 27 - Prob. 1FIBCh. 27 - The type of growth that occurs in a population...Ch. 27 - Prob. 3FIBCh. 27 - The type of spatial distribution likely to occur...Ch. 27 - Prob. 5FIBCh. 27 - Prob. 1RQCh. 27 - Prob. 2RQCh. 27 - Draw, name, and describe the properties of a...Ch. 27 - Prob. 4RQCh. 27 - What is logistic population growth? What is K?Ch. 27 - Prob. 6RQCh. 27 - Distinguish between populations showing concave...Ch. 27 - Prob. 8RQCh. 27 - Prob. 9RQCh. 27 - Prob. 1ACCh. 27 - Prob. 2AC
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
- You monitor the white-tailed deer population for the Wright State campus and woods and estimate 14 deer in the first year and 21 deer in the second year. (A) Assume the deer population is growing geometrically. Based on these data, what is geometric growth rate constant (A)? (B) Geometric growth patterns can also be modeled exponentially. If modeled exponentially, would you expect the exponential growth rate constant () to be greater than, less than, or equal to 0? Why? You monitor the deer population for many years. The population grows for a few more years, then seems to stabilize around 75 deer. (C) Given this information, what would be a more appropriate model for the deer population growth? Why? (D) What factors might be limiting the population growth? Would these factors be considered density-dependent or density- independent factors? Why? it is equal to zero. The correct answer is not displayed for Written Response type questions. Hide Feedback (A) Check geometric growth…arrow_forwardWrite a model for discrete population growth from t=0 to t=1. Assume that the population is ‘closed’. Define your terms.arrow_forwardDefine the following and give examples of each:Density independent limiting factor - Density dependent limiting factor -arrow_forward
- Compare the 95% confidence interval for the difference between two true means with the 95% confidence interval for an individual true kean. Describe one way in which these two equations are similar and state four ways in which these equations differ.arrow_forwardWhich of the following are variable terms in the discrete-time logistic model? ΔN Δt rmax,d t Nt K None of thesearrow_forwardMean 2728 14588026 Median 5 27078 Mode 4 22748 Excluded maximum value Mean 2680 75854 Excluded maximum value Median 195.5 32693.1875 Excluded maximum value Mode 75854.99742 14134737.32 Did the Mean, Median or Mode change more by excluding the maximum value? Explain Why What is the best statistic (Mean, Median, or Mode) to describe the typical: LOS/Charge Explain Why Admission Source Explain Why Gender Explain Why Discharge Status Explain Why Section 2 Variance 3.03 Excluded maximum value Variance Range Excluded maximum value Range Did the variance and range change…arrow_forward
- What is the major difference between the geometric population growth equation and the exponential population growth equation and when would you use one over the other?arrow_forwardIf the incidence rate of a very serious disease is 25/100,000 person-years and the prevalence of this disease in the population is 75/100,000, what is the average survival time of individuals who contract this disease? [Assume the population is in steady state] * Hint* Formula (D=P/IR)arrow_forwardUse this graph of the idealized exponential and logistic growth curves to complete the following. a. Label the axes and curves on the graph.b. What does the dotted line represent? c. For each curve, indicate and explain where population growth is the most rapid. d. Which of these curves better represents global human population growth?arrow_forward
- Draw a graph with a growth curve for a population that starts at 10 individuals and experiences exponential growth. Draw a second graph with a growth curve for a population that starts with 10 individuals and undergoes logistic growth. The second graph should have a carrying capacity of 100 individuals. Please give a proper written explanation for the graphs.arrow_forwardThe logistic model incorporates carrying capacity to make the model exponential density-dependent random density-independentarrow_forwardThe island of Isle Royale in Lake Superior has historically contained both moose and wolves. In recent years, the number of wolves has dwindled, leaving few predators for the moose. This has led to a large increase in the moose population on the island. The following information is from 2018. Using this information and the equation shown, the growth rate for the moose population on Isle Royale can be calculated. Based on the current population and the growth rate, what type of growth model would be expected? K = 2,000 moose N = 1,500 moose Rmax = 0.5 where: dt = change in time N=population size ax =maximum per capita growth rate of population K= carrying capacity A logistical growth model would best represent this population because the moose population will decrease over time. An exponential growth model would best represent this population because there are few predators for the moose on this island. A logistical growth model would best represent this population because the increase…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Case Studies In Health Information ManagementBiologyISBN:9781337676908Author:SCHNERINGPublisher:CengagePrinciples Of Radiographic Imaging: An Art And A ...Health & NutritionISBN:9781337711067Author:Richard R. Carlton, Arlene M. Adler, Vesna BalacPublisher:Cengage Learning
Case Studies In Health Information Management
Biology
ISBN:9781337676908
Author:SCHNERING
Publisher:Cengage
Principles Of Radiographic Imaging: An Art And A ...
Health & Nutrition
ISBN:9781337711067
Author:Richard R. Carlton, Arlene M. Adler, Vesna Balac
Publisher:Cengage Learning
POPULATION REGULATION AND LIMITING FACTORS | DENSITY INDEPENDENT AND DENSITY DEPENDENT FACTORS; Author: BioVidyalaya;https://www.youtube.com/watch?v=mB-AB-5Wnhs;License: Standard YouTube License, CC-BY
Population growth; Author: SiouxScience;https://www.youtube.com/watch?v=XnaC9iOumVA;License: Standard YouTube License, CC-BY