Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 53, Problem 53.5CR
Density-dependent factors regulate population growth (pp. 1200-1205)
• ln. density-dependent population regulation, death rates rise a net birth rates fall with increasing density. A birth or death rate that does not vary with density is said to be density independent.
• Density-dependent changes in birth and death rates curb population increase through negative feedback and can eventually stabilize a population near its
• Because changing environmental conditions periodically disrupt them, all populations exhibit some size fluctuations. Many populations undergo regular boom-and-bust cycles that are influenced by complex interactions between biotic and abiotic factors. A metapopulation is a group of populations linked by immigration and emigration.
Give an example of one biotic and one abiotic factor that contribute
to yearly fluctuations in the size of the human population.
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Students have asked these similar questions
| 4-Explain "carrying capacity"
5-What type of density independent factors may cause the population to decrease (name 2)?
6-What type of density dependent factors may cause the population to decrease (name 2)?
7-Overall, do deer populations seem to exhibit exponential or logistic growth? Explain why
A population undergoing density dependent regulation will;
Grow quickly when the population is small and then grow more slowly as the carrying
capacity is reached
Rise and fall erratically based on random factors such as climate
Grow faster and faster as more individuals are added to the population
Not grow at all
Describe the historical pattern of growth of the worldwide human population since our origin. Include in this historic overview the changes that have happened technologically, medically, culturally and nutritionally to result in major population changes over time. Relate the growth of the human population to our ecological footprint and explain the idea of limits to population growth known as the carrying capacity. Relative to carrying capacity, what may result from unbridled continued growth of our population? How does the size of the human population contribute to environmental degradation? Why must we take the human population size into account when we attempt to develop environmental restoration projects?
- minimum word count 1,500
Chapter 53 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
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 - Prob. 1CC
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 - Prob. 2CCCh. 53.6 - Prob. 3CCCh. 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 - Prob. 5TYUCh. 53 - The observation that members of a population are...Ch. 53 - According to the logistic growth equation...Ch. 53 - Prob. 8TYUCh. 53 - During exponential growth, a population always (A)...Ch. 53 - Which of the following statements about human...Ch. 53 - Prob. 11TYUCh. 53 - Prob. 12TYUCh. 53 - Prob. 13TYUCh. 53 - Prob. 14TYUCh. 53 - WRITE ABOUT A THEME: INTERACTIONS In a short essay...Ch. 53 - SYNTHESIZE YOUR KNOWLEDGE Locusts (grasshoppers in...
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- Match each term with its most suitable description. _____ carrying capacity a. maximum rate or increase per individual under ideal conditions _____ exponential growth b. population growth plots out as an S-shaped curve _____ biotic potential c. maximum number or individuals sustainable by the resources in a given environment _____ limiting factor d. population growth plots out as a J-shaped curve _____ logistic growth e. essential resource that restricts population growth when scarcearrow_forwardUsing the life table below, what is the population growth rate? Survival rate fecundity |(bx) Number of Age class (x) individuals (n x) (Sx) 30 0.8 1 15 0.6 1 2 10 0.4 2 3 5 3 4 Total 60|arrow_forward2 Wolves are introduced into the park → The number of elk calves born to every 100 female elk Stayed the same Decreased Increased → The overall elk population Stayed the same Decreased Increased → Competition for plants elk eat Stayed the same Decreased Increased → Availability of resources for bison Stayed the same Decreased Increased → Bison population arrow_forward
- A population is expected to grow exponentially after a severe population bottleneck. when the population size is exceeding the carrying capacity of the environment. when the population size is close but below the carrying capacity of the environment. when the birth rate changes as a function of the populationarrow_forwardQuestion 22 As discussed in lecture, an age distribution pyramid that has a wide base and narrow top (pyramid-shaped), can result in two changes of populations. Under high resources, support, and medical aid resulting in high infant survivorship, the population is most likely to Under low resources, support, and medical ai (such as developing countries), the populatio [Select] [Select] increase in size remain stable in size decrease in size lity [Select] ◄ Previous ✓ Next ▸arrow_forwardBased on the equation for logistic population growth, Logistic Growth O A. new Individuals are added most rapidly at low population sizes. This figure displays the equation for logistic population growth and visualizes population growth as a function of time (number of generations) as it approaches carrying capacity. N stands for population size, K stands for carying capacity, and r stands for intrinsic rate of increase. O B. population growth never exceeds K. C. growth rate decreases as N approaches K. D. the population keeps growing when N equals K. K= carrying capacity dN (K-N) dt Number of generations ered MacBook Air F10 F11 吕口 F3 888 F4 F5 F1 F2 $ % & * @ 7 9 2 4 Y P Q W E R F G H K A S D C V N M Z .. * CO B #3 Population size (M)arrow_forward
- A population is expected to grow exponentially when the population size is close but below the carrying capacity of the environment. when the population size is exceeding the carrying capacity of the environment. when the birth rate changes as a function of the population after a severe population bottleneck.arrow_forwardA population bottleneck will typically result in; A larger, more diverse population A smaller, less diverse population A larger, less diverse population A smaller, more diverse populationarrow_forwardPopulation growth is exponential for the human population. It is an example of a positive feedback cycle where with each child born, the potential number of parents increases in the future. What is the most logical conclusion as to when the human population will reach its carrying capacity? A. When a regulating factor exists that keeps the population at equilibrium B. When feedback mechanisms kick in and population growth declines below carrying capacity C. When equilibirum is reached D. When density-dependent factors come into play and population levels start to decline ❌arrow_forward
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