Campbell Biology 11th Edition - Valuepack
11th Edition
ISBN: 9780134833545
Author: Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece Neil A. Campbell Lisa A. Urry
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 54, Problem 7TYU
Summary Introduction
Introduction: Top down control refers to the situation where the removal of a top predator leads to disruption of the food chain. The top predator regulates the population of herbivores, which in turn regulate the population of plants. The plants regulate the nutrient level through absorption from the soil. Thus, the removal of top predator can result in drastic changes in the ecosystem.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following could qualify as a top-down control ona grassland community?(A) limitation of plant biomass by rainfall amount(B) influence of temperature on competition among plants(C) influence of soil nutrients on the abundance of grassesversus wildflowers(D) effect of grazing intensity by bison on plant speciesdiversity
The Jena experiment tested the effects of plant species richness on the ecosystem function of various grassland areas over a 15-year timespan. Ecosystem function was determined by measuring the biomass, soil characteristics, types, and numbers of producers and consumers in the area, and tested to determine the strength of the biodiversity effect on the ecosystem.
The graphs show the ecosystem function at the onset of the experiment (dotted line) versus the ecosystem function at the end of the 15-year experiment (solid line) in four different test sites (A, B, C, and D).
As the fertility of soil on the forest floor increases, which of the following most
likely will occur?
Mark only one oval.
00
A) size of plants decreases.
B) growth rate of plants increases.
C) density of plants decreases.
D) number of species of plants increases.
E) probably nothing
not benefited.
Mark only one oval.
levolls aviat estela
Related to the greater Yellowstone area and according to abundance levels,
have benefited from wolf reintroduction, while
have
ainerion
A) grizzly bears, brown bears
B) beavers, aspen trees
C) woody plant species, beavers
D) all of the above first listed species, elk
A) zonation.
OB) stratification.
C) succession.
D) characterization.
OE) vector-born
bond woll 19v altide A (0)
lagens ewolis témns) A (0)
anomoe ni sunt aniq bio nA (SSSS
oorhoorigion
Mos Jealsong visuau al vinum
Changes in community composition and structure over time are called which of
the following?
Jovo sto no he
Mark only one oval.
2000 abnedm
1003
en avoubisen (0
esw 162 (3 CD…
Chapter 54 Solutions
Campbell Biology 11th Edition - Valuepack
Ch. 54.1 - Explain how competition, predation, and mutualism...Ch. 54.1 - According to the principle of competitive...Ch. 54.1 - MAKE CONNECTIONS Figure 24.14 illustrates how a...Ch. 54.2 - What two components contribute to species...Ch. 54.2 - How is a food chain different from a food web?Ch. 54.2 - Prob. 3CCCh. 54.2 - MAKE CONNECTIONS Rising atmospheric CO2, levels...Ch. 54.3 - Why do high and low levels of disturbance usually...Ch. 54.3 - Prob. 2CCCh. 54.3 - WHAT IF? Most prairies experience regular fires,...
Ch. 54.4 - Describe two hypotheses that explain why species...Ch. 54.4 - Prob. 2CCCh. 54.4 - WHAT IF? Based on MacArthur and Wilson's island...Ch. 54.5 - What are pathogens?Ch. 54.5 - WHAT IF? Rabies, a viral disease in mammals, is...Ch. 54 - Interspecific interactions affect the survival and...Ch. 54 - Based on indexes such as Shannon diversity, is a...Ch. 54 - Is the disturbance pictured in figure 54.25 more...Ch. 54 - How have periods of glaciation influenced...Ch. 54 - Prob. 54.5CRCh. 54 - Prob. 1TYUCh. 54 - The principle of competitive exclusion states that...Ch. 54 - Based on the intermediate disturbance hypothesis,...Ch. 54 - According to the island equilibrium model, species...Ch. 54 - Prob. 5TYUCh. 54 - Prob. 6TYUCh. 54 - Prob. 7TYUCh. 54 - The most plausible hypothesis to explain why...Ch. 54 - Community 1 contains 100 individuals distributed...Ch. 54 - Prob. 10TYUCh. 54 - EVOLUTION CONNECTION Explain why adaptations of...Ch. 54 - Prob. 12TYUCh. 54 - WRITE ABOUT A THEME: INTERACTIONS In Batesian...Ch. 54 - Prob. 14TYU
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
- Competition between species on the same trophic tier leads to four potential outcomes, 3 are deterministic (zero sum games where one species goes extinct and the other maximizes their growth to balance at the carrying capacity) and one where both competitors survive, but neither does well. A) This dynamic suggests that extirpation (local extinction) of populations is a far more likely outcome than co-existence. How does this affect management policies aimed at increasing biodiversity and proliferation of inter and intra population and interspecies variation. B) Endangered species are defined by low growth rates (r) and low K (reflecting high demand for resources). What are the implications of both these factors on the outcome of competition scenarios, especially the most common scenario of alternate stable states?arrow_forwardThe graph above is from a paper by Dave Tilman published in 1994. Which of the following statements is consistent with the graph? A) The results contradicts the intermediate disturbance hypothesis B) Increasing diversity increases community stability C) The results support the intermediate disturbance hypothesis.arrow_forwardBased on the intermediate disturbance hypothesis,a community’s species diversity is increased by(A) frequent massive disturbance.(B) stable conditions with no disturbance.(C) moderate levels of disturbance.(D) human intervention to eliminate disturbance.arrow_forward
- nonmigratory wildebeest populations are limited, mainly by factors that are a.) density independent, top down b.) density independent, bottom up. c.) density dependent, top down d.) density dependent, bottom uparrow_forwardWhich limiting factor would affect the carrying capacity for all species in the pictured ecosystem? a) Number of trees for giraffes b) Hunting behavior of lions c) Birth rate of the giraffes d) Amount of grasslandarrow_forwardCapturing and relocating is stressful for animals. In the zebra example, what are the stages of reintroduction, and what purpose does each step serve? Why is the buffalo considered a success story for reintroduction? (And -- based on what you know from lecture, what type of population growth pattern does this indicate?) Park managers use the term “adaptive management”; what do you think this means, and what are two benefits of this approach to managing ecosystems?arrow_forward
- Which of the following statements about the effects of clear-cutting on the Amazonian forest are true? Select all that apply. a) Soil moisture is likely to decline. b) Nutrient export is likely to decline. c) Species diversity is likely to decline. d) Atmospheric CO2 is likely to decline.arrow_forwardWhy (a) answer is 12,000,000 Please Explain a & b.arrow_forwardIn a grassland ecosystem, scientists manipulate the nutrient levels in the soil. They observe that increasing soil nutrients leads to a significant increase in the abundance of grass species. This, in turn, supports a larger population of herbivores, which subsequently attracts more predators. What type of control is described in this scenario and why? Group of answer choices Bottom-up control: Increased nutrient levels enhance primary production, which supports higher herbivore and predator populations Bottom-up control: Increased predator populations reduce herbivore numbers, which leads to a decrease in primary production Top-down control: Predator abundance directly affects primary production by influencing herbivore populations Top-down control: Herbivores increase due to higher grass abundance, which in turn affects predator populationsarrow_forward
- Do forest use and grazing make up a larger part of the footprint for temperate-zone industrialized nations such as Canada and the United States or for tropical-zone developing nations such as Kenya and Tanzania? What do you think accounts for this difference between these two types of nations? What else besides land use of forests and grasslands contributes to an ecological footprint?arrow_forwardSustainable conservation practices aim to balance human needs with the protection of biodiversity. Which of the following is NOT typically considered a sustainable conservation strategy? (a) Establishing protected areas for endangered species. (b) Implementing quotas and regulations on resource extraction. (c) Promoting habitat restoration and ecological corridors. (d) Encouraging the introduction of non-native species for pest control.arrow_forwardAccording to the resource-ratio hypothesis (a.k.a. R-star), what factor(s) will determine the maximum number of competing species that could possibly coexist in a community? (Note: either one or more-than-one answer could be correct) .what does the number of limiting resources in a community tell us? The number of limiting resources in the community The net primary productivity of the community (NPP). The number of trophic levels that are present in the community. | The intrinsic rate of increase (r) of each species in the community. The colonization rate of each species that can access the habitat.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
DIVERSITY IN PLANTS; Author: 7activestudio;https://www.youtube.com/watch?v=uJrks56FQIY;License: Standard YouTube License, CC-BY
Biology- Plant Kingdom - Diversity in Living Organisms - Part 4 - English - English; Author: Bodhaguru;https://www.youtube.com/watch?v=QFgQ74EvfDQ;License: Standard YouTube License, CC-BY