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
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Textbook Question
Chapter 54, Problem 54.2CR
Based on indexes such as Shannon diversity, is a community of higher species richness always more diverse than a community of lower species richness? Explain.
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You are comparing species diversity between four different habitats: which of the
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Habitat D has 3 species total, and is dominated by one of its three species
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Consider the following hypothetical scenario: In a vast area of a land-locked town, two distinct forest formations can be found – (1) forest over limestone formation and (2) a lowland tropical forest. Researchers did an area-random sampling composed of 25 plots measuring 20mx20m for each of the two forest formations. Do you think the two forest formations have the same diversity index values and species richness? Why or why not?
Data shown in this figure describes the species richness of mammals and birds among a variety of Sky islands.
Which of the following best fits the correlations represented in the graphs?
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2) species richness increases with area and decreases with isolation
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Follow up question which model of species distribution and abundance does this data support?
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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
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- Ecology and Biology: Shannon Diversity Index: Definition & Example The Shannon Diversity Index (sometimes called the Shannon-Wiener Index) is a way to measure the diversity of species in a community. Denoted as H, this index is calculated as: H = -Σpi * ln(pi) where: Σ: A Greek symbol that means “sum” ln: Natural log pi: The proportion of the entire community made up of species i The higher the value of H, the higher the diversity of species in a particular community. The lower the value of H, the lower the diversity. A value of H = 0 indicates a community that only has one species. The Shannon Equitability Index is a way to measure the evenness of species in a community. The term “evenness” simply refers to how similar the abundances of different species are in the community. Denoted as EH, this index is calculated as: EH = H / ln(S) where: H: The Shannon Diversity Index S: The total number of unique species What is the Shannon diversity index value for this community? What…arrow_forwardChoose one of the following factors and explain how and why species richness varies with it: temporal variation, latitude, succession. Give a specific example.arrow_forwardWhat do you mean lay species diversity? Name two measures of species diversity?arrow_forward
- You are an ecologist studying the biodiversity of islands in a tropical archipelago. Using the species-area relationship, you aim to estimate the number of species on a newly discovered island with an area of 220 km². Your research has established that the y-intercept of the species-area relationship (log S = log c + z log A) is 1.09 and the slope (z) is 0.38. Based on these parameters, how many species would you expect to find on this island? Group of answer choices: 34 149 82 8 92 0.65arrow_forwarda community has 9 species and 12 links. what is the connectivity for this community? the correct answer is 0.15. why?arrow_forwardWhat two components contribute to species diversity?Explain how two communities with the same numberof species can differ in species diversity.arrow_forward
- A scientist studying the diversity of month species in two forests calculates H' = 1.6 for forest 1 and H' = 1.1 for forest 2. What conclusion can be made based on these data? %3D The moth species richness of forest 1 is greater than forest 2 If the species richness of both forests is equal, the species evenness of forest 2 is greater There was more sampling effort in forest 2 than forest 1 If the species richness of both forests is equal, the species evenness of forest 1 is greaterarrow_forwardIf an ecosystem has a high Shannon diversity Index, is that a measure of good/healthy biodiversity? Explain your answer.arrow_forwardWhat is the other component of species diversity besides richness? Briefly describe how two communities of trees might differ in that component.arrow_forward
- Provide an sufficient explanation as to how a positive interspecific distribution-abundance relationship occurs.arrow_forwardTwo forest plots have been surveyed, and the following Shannon Index values were recorded: Plot 1: Shannon Index (H') = 1.85 Plot 2: Shannon Index (H') = 2.15 Which plot has a greater effective number of species, and by how much? Group of answer choices: A. Plot 2 has a greater effective number of species, by approximately 2.00 species B. Both plots have the same effective number of species C. Plot 1 has a greater effective number of species, by approximately 1.00 species D. Plot 2 has a greater effective number of species, by approximately 1.50 species E. This is impossible to calculate based on the provided data F. Plot 1 has a greater effective number of species, by approximately 1.50 speciesarrow_forwardWhy do ecologists consider both species richness and species evenness when they quantify species diversity?arrow_forward
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