Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
11th Edition
ISBN: 9780133910605
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 31.2, Problem 1CSC
Summary Introduction
To describe:
The principal causes of loss of biodiversity, keystone predators.
Introduction:
Keystone species is often a dominant predator whose removal allows a prey population to explode and often decreases overall diversity. Urbanization, deforestation, habitat fragmentation, pollution, population growth, and invasive species are the main cause of loss of biodiversity and keystone predators
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
What is happening to the forest of Madagascar and what is the outcome?
Why is saving the biodiversity of Madagascar so important?
Why does Australia have such an unusual variety of spiders?
What are five reasons species are becoming extinct?
What does it mean for a species to be extinct? Give an example
How do invasive species travel or spread to a different ecosystem? Give an example.
List and describe five examples of declining biodiversity
five actions that individuals can do to help create and support biodiversity?
Natural processes of species formation and extinction emerge on a timescale measured in millions of years, whereas human-mediated extinctions are measured on a scale of years to decades. How does this discrepancy complicate our attempts to conserve biodiversity?
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?
Chapter 31 Solutions
Biology: Life on Earth with Physiology Plus Mastering Biology with Pearson eText -- Access Card Package (11th Edition)
Ch. 31.1 - describe the goals of conversation biology?Ch. 31.1 - Prob. 2CYLCh. 31.2 - Prob. 1CSCCh. 31.2 - describe the major categories of ecosystem...Ch. 31.2 - Prob. 1TCCh. 31.2 - Prob. 2CYLCh. 31.3 - define mass extinction?Ch. 31.3 - Prob. 1HYEWCh. 31.3 - explain why biologists fear that a mass extinction...Ch. 31.4 - Prob. 1CSC
Ch. 31.4 - Prob. 1CYLCh. 31.4 - Prob. 1TCCh. 31.4 - Prob. 2CYLCh. 31.5 - Prob. 1CSCCh. 31.5 - Prob. 1CYLCh. 31.5 - Prob. 1TCCh. 31.5 - Prob. 2CYLCh. 31.6 - Before 1700, wolves roamed over almost all of...Ch. 31.6 - describe the principles of sustainable...Ch. 31.6 - In 1970, Atlantic leatherback sea turtle...Ch. 31.6 - explain how population, technology, and lifestyle...Ch. 31 - List some reasons that the ecological footprints...Ch. 31 - Prob. 1FIBCh. 31 - A factor that increases humanity ecological...Ch. 31 - Prob. 1RQCh. 31 - Search for and describe some examples of habitat...Ch. 31 - Prob. 2FIBCh. 31 - Prob. 2MCCh. 31 - What is ecological economics? Why is it important?Ch. 31 - Prob. 3FIBCh. 31 - Prob. 3MCCh. 31 - Prob. 3RQCh. 31 - Prob. 4FIBCh. 31 - Prob. 4MCCh. 31 - Prob. 4RQCh. 31 - The smallest population of a species that is...Ch. 31 - Which of the following is not true of a population...Ch. 31 - Why are efforts to protect monarch butterflies a...Ch. 31 - A Native American saying tells us that We do not...
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
- Environmental scientists David Pimentel, Rodolfo Zuniga, and Doug Morrison of Cornell University reviewed scientific estimates for the economic and ecological costs imposed by introduced and invasive species in the United States. They found that, as of 2005, approximately 50,000 species had been introduced in the United States and that these accountedfor over $120 billion in economic costs each year. These costs include direct losses and damage, as well as costs required to control the species. (The researchers did not quantify monetary estimates for losses of biodiversity, ecosystem services, and aesthetics, which they said would drive total costs several times higher.) Calculate values missing from the table to determine the number of introduced species of each type of organism and the annual cost that each imposes on our economy. Of the 50,000 species introduced into the UnitedStates, half are plants. Describe two ways in whichnon-native plants might be brought to a new location.How…arrow_forwarda population of mice moves into a field in which secondary succession is occurring. What is the most likely reason the mouse population moved into this area?arrow_forwardAs 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…arrow_forward
- Zebra mussel population growth in the Great Lakes is a growing concern. Zebra mussels are not native to North America, and due to their ability to rapidly multiply, they have been depleting the food sources for many of the native fish species in the Great Lakes. They are also associated with causing toxic algal blooms, preventing sunlight and oxygen access to many plant and fish life in the lakes.Three years ago, a 5 km3 section of the Great Lakes was studied and approximately 89 000 zebra mussel colonies were found.Each colony produced 120 colonies over a three-year period. However, only 2% of the new colonies survived past the first year. Over the three years, there were 97 000 dead colonies that were washed ashore in the Great Lakes. Many of the zebra mussels attach themselves to hard surfaces, such as boats and trailers. It was estimated that approximately 85 000 colonies attached themselves to boats and left the area. Many of these zebra mussels died, but some managed to hitchhike…arrow_forwardWhat is the relationship between a pioneer species and primary succession? A pioneer species is an invasive species that causes areas to experience primary succession. There is not a relationship between a pioneer species and primary succession. The pioneer species only occurs in areas of secondary succession. A pioneer species is important in an area of primary succession because it can grow and thrive in areas where most other species cannot. A pioneer species only inhabits areas of primary succession.arrow_forwardA conservation organization has hired you to lead efforts to reduce the loss of biodiversity in a tropical country. Which of the following problems would you focus on first and why: habitat destruction and fragmentation, hunting and fishing activity, harvesting of wild species for commercial sale, or introduction of exotic organisms?arrow_forward
- Bighorn sheep are an iconic species in the western United States, however, their population size is drastically lower than it once was historically. These sheep inhabit montane patches surrounded by urban and agricultural landscapes. Accordingly, bighorn sheep can be considered a metapopulation. Wildlife managers would like to increase the patch occupancy of bighorn sheep. Which of the following would be the most effective conservation/restoration strategy? None of these statements is an effective conservation strategy. O Increase patch size and quality, and decrease the distance between patches. O Increase patch size and the distance between patches, and decrease patch quality. O Increase the distance between patches and patchy quality, and decrease patch size. Decrease patch size, distance between patches, and patch quality.arrow_forwardMatch the type of keystone species with the example. Snow geese graze in slat marshes, opening up areas for other plants to take root [ Choose ] Facilitator Modifier Host Mutualism Prey Apex Predator Herbivore Predator Manipulator Once mating, thousands of salmon will die in a single river, filling it river full of nutrients [ Choose ] Facilitator Modifier Host Mutualism Prey Apex Predator Herbivore Predator Manipulator I have already asked these questions but y'all gave me the wrong answers... Anyway, the first answer is NOT a modifier and the second answer is NOT facilitator.arrow_forwardCreate a two-part figure showing the effects of forest fragmentation on the community of small mammals relevant to Lyme disease in eastern forests. Figure A should depict the interaction network of a large forestpatch with higher species diversity. Figure B should illustrate how the interaction network and transmission of Borrelia burgdorferi are different in a small forest fragment with low species diversity than they are in largeforest patches with greater diverisity. Eastern forests are diverse communities in which many species interact with one another. Your figure will be asimplified interaction network showing some of the most important species related to the ecology of Lyme disease. Remember that your goal is to illustrate how increasing fragmentation affects forest mammal communities in a way that increases Lyme disease risk.• Choose from the following species for your figure: black-legged tick, white-footed mouse, raccoon, eastern chipmunk, gray squirrel, white-tailed deer,…arrow_forward
- Identify one problem created by the introduction of the invasive species. Provide a solution for the removal of the invasive species. Explain your solution for the removal of the native species, economy and/or social impacts? How long do you think it will take to return to the original biodiversity of the ecosystem based on your solution and why?arrow_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_forwardWhich 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_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning