Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Textbook Question
Chapter 41, Problem 4TYU
Community 1 contains 100 individuals distributed among four species: 5A, 5B, 85C, and 5D Community 2 contains 100 individuals distributed among three species: 30A, 40B, and 30C. Calculate the Shannon diversity index (H) for each community. Identify which community is more diverse.
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Students have asked these similar questions
What is the Gini-Simpson index of diversity for each community?
What is the Shannon index for each community?
What is the simple matching index between these two communities assuming there are only 7 species in the area?
Use the Shannon-Weiner Diversity equation to calculate diversity (H). Which treatment (predator enclosure, no predator enclosure) is more diverse? Why do you think this is the case?
Predator Enclosure:
Species
Number
A
5
B
1
C
4
D
2
E
12
No Predator Enclosure:
Species
Number
A
7
B
9
C
17
D
3
Identify the Shannon diversity index in the two hypothetical communities below. Which of the two communities is more diverse? Round off your answer to the nearest hundredth
Species
A
Community A
B
Community B
A
12
5
B
1
5
C
3
3
D
4
7
Chapter 41 Solutions
Campbell Biology in Focus
Ch. 41.1 - Explain how interspecific competition, predation,...Ch. 41.1 - According to the principle of competitive...Ch. 41.1 - MAKE CONNECTIONS Figure 22.13 illustrates how a...Ch. 41.2 - What two components contribute to species...Ch. 41.2 - How is a food chain different from a food web?Ch. 41.2 - WHAT IF? Consider a grassland with five trophic...Ch. 41.2 - MAKE CONNECTIONS Rising atmospheric CO2 levels...Ch. 41.3 - Why do high and low levels of disturbance usually...Ch. 41.3 - During succession, how might the early species...Ch. 41.3 - WHAT IF? Most prairies experience regular fires,...
Ch. 41.4 - Describe two hypotheses that explain why species...Ch. 41.4 - Describe how an islands size and distance from the...Ch. 41.4 - WHAT IF? Based on MacArthur and Wilsons island...Ch. 41.5 - What are pathogens?Ch. 41.5 - Prob. 2CCCh. 41 - The feeding relationships among the species in a...Ch. 41 - Prob. 2TYUCh. 41 - Prob. 3TYUCh. 41 - Community 1 contains 100 individuals distributed...Ch. 41 - Prob. 5TYUCh. 41 - SCIENTIFIC INQUIRY An ecologist studying plants in...Ch. 41 - FOCUS ON EVOLUTION Explain why adaptations of...Ch. 41 - FOCUS ON INFORMATION In Bateslan mimicry, a...Ch. 41 - Prob. 9TYU
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- Compare the two communities based on the three indices that have been computed. Explain what environmental factors (biotic and/or abiotic) would most likely affect the differences between the two communities? Cite similar studies to support your answer.arrow_forwardCommunity 1 contains 100 individuals distributed amongfour species: 5A, 5B, 85C, and 5D. Community 2 contains100 individuals distributed among three species: 30A, 40B,and 30C. Calculate the Shannon diversity (H) for eachcommunity. Which community is more diverse?arrow_forwardCompare the two communities based on the indices computed in the table. what environmental factors (biotic and/or abiotic) would most likely affect the differences between the two communities?arrow_forward
- 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_forwardYou are comparing species diversity between four different habitats: which of the following habitats is the most diverse? Habitat A has 15 species total, with approximately equal representation across all species Habitat B has 15 species total, and is dominated by two of its fifteen species Habitat C has 3 species total, with approximately equal representation across all species Habitat D has 3 species total, and is dominated by one of its three species Habitats A and B are equally diversearrow_forwardpollinators abundance pi In(pi) pi x In(pi) wasp 7 bumble bee 7 honey bee 22 fly 13 Total 49arrow_forward
- Compare the two communities based on the indices computed in the table. what environmental factors (biotic and/or abiotic) would most likely affect the differences between the two communities? i need more explanation pls do not copy from others or i will downvotearrow_forwardQ2.3 1 Point Calculate the Shannon-Weiner index and Simpson's index of diversity for each island. Island A Island B Island C Save Answer *Unsaved Changesarrow_forwardCommunity 1 is formed of species A, B, C, D, and E. Community 2 is formed of species A, C, F, G, H. What is beta diversity, as estimated using the Jaccard indexarrow_forward
- You are analyzing observational data on interactions between populations of two species in a community colleceted over 24 years. Here are the data on a 2-species graph. 70 60 50 50 40 40 Number of Species B 30 2 30 16 3 4 20 10 6 5 7 8 00 Numbers = Observation year 9 10 10 11 12 13 14 15 16 17 18 19 20 0 0 10 20 30 40 50 60 70 80 Number of Species A Species A and Species B, respectively, are commensals competitors prey and predatorarrow_forwardWhen we measure species density. If you apply random sampling and systematic sampling to a site setting, what problems may we encounter? Why is there an error compared with the actual density of species?arrow_forwardYou have been researching the biodiversity of different species of lizards in the Florida Everglades. You select a one square acre plot of land and begin tagging and counting the different reptiles found in that area over 6 months. After 6 months of research, you collected the following data: Species Count Green Anole 16 Brown Anole 72 American Alligator 3 Burmese python 2 Corn Snake 9 Eastern Glass Lizard 8 Use the blanks below to answer the following questions: 1. What is the biodiversity index of the one acre lot observed? 2. If you collected the same information for a second square acre 10 miles away and determined that acre to have a biodiversity index of 0.37, would you consider the first area to be biologically diverse and why or why not? 3. What do you think is suppressing biodiversity in the first acre counted? a b carrow_forward
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