Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 54, Problem 4IQ
Tide pool 1 has three species of sea urchins with the following numbers: A = 8, B = 6, C = 6; tide pool 2 has four species of sea urchins with the following numbers: A = 14, B = 2, C = 2, D = 2.
- a. Compute the Shannon diversity index of the sea urchin communities in the two pools.
- b. Which pool has the greater species richness? Which community is the more diverse according to the Shannon diversity index?
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Chapter 54 Solutions
Study Guide for Campbell Biology
Ch. 54 - When two spiny mouse species coexist, Acomys...Ch. 54 - Name the type of mimicry described in each of the...Ch. 54 - Name and give examples of the interspecific...Ch. 54 - Tide pool 1 has three species of sea urchins with...Ch. 54 - Prob. 5IQCh. 54 - Describe the effects of the alder stage on soil...Ch. 54 - Why would the fact that tropical communities are...Ch. 54 - a. How do the rates of immigration and extinction...Ch. 54 - Why are ecologists trapping and testing migrating...Ch. 54 - Complete the following concept map to organize...
Ch. 54 - Community ecologists develop models or hypotheses...Ch. 54 - Two allopatric species of Galapagos finches have...Ch. 54 - The greater blue-ringed octopus (Hapalochlaena...Ch. 54 - Two other species of octopus (H. maculosa and H....Ch. 54 - Two species, A and B, occupy adjoining...Ch. 54 - Two shops in the same block are selling coffee and...Ch. 54 - A palatable (good-tasting) prey species may defend...Ch. 54 - Most humans are host to mites of the genus Demodex...Ch. 54 - The species richness of a community refers to the...Ch. 54 - You have a friend who is a strict vegan; that is,...Ch. 54 - Ecologists survey the tree species in two forest...Ch. 54 - When one species was removed from a tide pool, the...Ch. 54 - Invasive species often reach a large biomass...Ch. 54 - Why do most food chains consist of only three to...Ch. 54 - According to the top-down (trophic cascade) model...Ch. 54 - During succession, inhibition by early species a....Ch. 54 - According to the nonequilibrium model, a. chance...Ch. 54 - Which of the following shows a mismatch between...Ch. 54 - Prob. 18TYKCh. 54 - A major explanation for the decline in species...Ch. 54 - Prob. 20TYK
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- 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?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 is species richness? A. The number of species per unit area (example: # species/m^2) B. The number of species present in a communityarrow_forward
- 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_forwardIdentify 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 7arrow_forwardUse the data in the Table below to answer the following 4 questions. 1. Create a graph (label this as Figure 1) of species richness and species diversity over the study years. Upload your graph in the next question. 2. a) When was species richness lowest, and when was it highest? b)When was species diversity lowest, and when was it highest? 3. What is the effect of invasive species H on community structure in year 3 compared to year 8? 4. What is the overall impact of invasive species H on the species richness and species diversity of this community? TABLE Species Richness Species Diversity YEAR 3 3 0.995 YEAR 8 5 1.516 YEAR 12 5 1.351 YEAR 15 6 1.197arrow_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_forwardUse 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 3arrow_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_forward
- Describe a hypothetical three community with high species richness but low species evennessarrow_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? i need more explanation pls do not copy from others or i will downvotearrow_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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