Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Question
Chapter 17.3, Problem 5TC
Summary Introduction
To explain:
Why there are so many endemic species present on islands.
Introduction:
The endangered species is a species whose number has fallen to a critical lower level and are likely facing the threat of extinction. The extinction of species occurs due to loss of habitat and due to loss of
Summary Introduction
To determine:
Why have the overwhelming majority of recent extinctions occurred on islands.
Introduction:
Mass extinction is an event that involved the extinction of very large populations of biodiversity on earth. It occurs when the rate of extinction is more than the rate of speciation.
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Chapter 17 Solutions
Biology
Ch. 17.1 - One way to determine the number of species on...Ch. 17.1 - Prob. 1TCCh. 17.1 - The tiny frog paedophryne amauensis was discovered...Ch. 17.1 - describe how biologists define species and explain...Ch. 17.1 - describe the biological species concept and...Ch. 17.1 - list some reasons why it can be hard to tell...Ch. 17.2 - describe the main types of premating and...Ch. 17.2 - provide examples of each type of mechanism?Ch. 17.3 - Make a list of events or processes that could...Ch. 17.3 - How might conservation scientists use the map...
Ch. 17.3 - It is not surprising that the forests of New...Ch. 17.3 - Prob. 3TCCh. 17.3 - Prob. 4TCCh. 17.3 - Prob. 5TCCh. 17.3 - One possible explanation for the distinctive...Ch. 17.3 - describe the two general steps that are required...Ch. 17.3 - explain the difference between allopatric and...Ch. 17.3 - explain adaptive radiation and describe the...Ch. 17.3 - interpret an evolutionary tree diagram?Ch. 17.4 - If specialization puts a species at risk for...Ch. 17.4 - Prob. 1CTCh. 17.4 - describe the main causes of extinction?Ch. 17.4 - Prob. 2CYLCh. 17.4 - Given that genetic isolation is the first step in...Ch. 17 - The biological species concept is difficult or...Ch. 17 - Which of the following does not describe a...Ch. 17 - All instances of speciation require a. genetic...Ch. 17 - Analysis of Rhagoletis fly populations in North...Ch. 17 - In the initial phase of allopatric speciation,...Ch. 17 - A species is a group of ________ that evolves...Ch. 17 - Fill in the following with the appropriate...Ch. 17 - Formation of a new species occurs when two...Ch. 17 - The process by which many new species arise in a...Ch. 17 - A species may be at higher risk of extinction if...Ch. 17 - Define the following terms: species, speciation,...Ch. 17 - Many of the oak tree species in central and...Ch. 17 - Review the material on the possibility of...Ch. 17 - A drug called colchicine prevents cell division...Ch. 17 - What are the two major types of reproductive...Ch. 17 - It is difficult to perform experiments that test...
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- Why is it difficult to predict which species will be driven extinct by global warming?arrow_forwardWhat is the relationship between extinction, its impact on biodiversity, and ecosystems? When a species becomes extinct, the vacancy of that species allows another species to invade and transform the ecosystem so there is no longer biodiversity, which allows the ecosystem to flourish. The extinction of plants and animals leaves a vacancy in the biodiversity of the ecosystem, which can cause the ecosystem to collapse. The extinct plants and animals can come back as a different species, creating more biodiversity within the ecosystem. The extinction of plants and animals does not have an impact on the biodiversity of an ecosystem.arrow_forwardSpecies have come and gone in response to changing global climates during the history of the earth. Some of the mass extinctions of the past have resulted in the deaths of over 90% of existing species. What do these biological changes suggest about the long-term stability of the species composition of climax communities?arrow_forward
- Between Tenerife and La Gomera, which island would be expected to have a greater number of species? In your discussion of why, focus on the primary difference between the islands (size or distance from the mainland) A) Tenerife B) La Gomera and whyarrow_forwardCan you think of a situation where we deliberately want to make a species extinct? How would you justify it?arrow_forwardIf 99% of the species that ever existed are now extinct, why is there such concern over the extinction rates over the last several centuries?arrow_forward
- Throughout Earth’s history, many species, and perhaps even most of the species that ever existed, have become extinct. The causes are numerous: climate change, volcanic activity, the actions of oxygen-producing organisms, changes in carbon dioxide concentration, and even asteroid impacts. Have humans ever caused extinctions?arrow_forwardIn the past, which factor would have caused a mass extinction of species?arrow_forwardBetween La Palma and Lanzarote, which island would be expected to have a greater number of species? In your discussion of why, focus on the primary difference between the islands (size or distance from the mainland) A) La palma b) Lanzarote and why?arrow_forward
- Two ecologists, Robert H. MacArthur and Edward Wilson, studied how organisms immigrate to islands and how their numbers change after colonization. They developed the island biogeography model to explain the composition and diversity of island species. The graph below shows the number of species versus the size of the Caribbean island: Number of Species 1,000 100 1 Redona 10 SPECIES BY AREA Saba Puerto Rico: Monserrat 100 1,000 Hispaniola Jamaica 10,000 Island Size in Square Kilometers Cuba 100,000 1,000,000 a. Use the Species by Area graph and your knowledge of how organisms can immigrate to answer the following: i. Identify the likely scientific question being investigated in the study. ii. Describe the relationship between species number and island size observed in the data. iii. Explain how the experiment results would change if the islands had frequent ships that docked on them from distant bodies of water. b. Scientists have found that most species on the same continent are more…arrow_forwardIdentify a species that your group thinks is ok to drive to extinction and justify the reasons for this decision. Can you anticipate any consequences of losing this species from the Earth?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
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