Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 53, Problem 6TYK
Summary Introduction
Introduction:
Species richness is the evaluation of presence of different species in the specific area or community. This does not include the abundance or the relative abundance of the species. Also, parameter of species richness helps in estimating the relative values of species that might need conservation measures.
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By a currently favored hypothesis, species richness of a community is greatest when physical disturbances are of_____ intensity and frequency. a. low c. high b. intermediate d. variable
2) The intermediate disturbance hypothesis proposes that __________.
A. the highest diversity in communities is maintained by an intermediate level of disturbance
B. species that are disturbed frequently have intermediate levels of abundance within communities
C. through time all communities will experience an intermediate level of disturbance
D. disturbances within a community will always cause an intermediate level of diversity
E. community diversity is always reduced by disturbance
Habitats with moderate levels of disturbance have higher species diversity.
A) True
B) False
Chapter 53 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 53.1 - How might natural selection favor a carnivore that...Ch. 53.1 - Prob. 2SBCh. 53.1 - How can field experiments demonstrate conclusively...Ch. 53.2 - Prob. 1SBCh. 53.2 - Prob. 2SBCh. 53.3 - Prob. 1SBCh. 53.3 - Prob. 2SBCh. 53.3 - Prob. 3SBCh. 53.4 - Prob. 1SBCh. 53.4 - Prob. 2SB
Ch. 53.5 - Prob. 1SBCh. 53.5 - Prob. 2SBCh. 53.6 - Prob. 1SBCh. 53.6 - How does a climax community differ from early...Ch. 53.6 - Prob. 3SBCh. 53.7 - Prob. 1SBCh. 53.7 - Prob. 2SBCh. 53 - Prob. 1TYKCh. 53 - The use of the same limiting resource by two...Ch. 53 - Prob. 3TYKCh. 53 - Prob. 4TYKCh. 53 - A keystone species: a. is usually a primary...Ch. 53 - Prob. 6TYKCh. 53 - The change in the species composition of a...Ch. 53 - Prob. 8TYKCh. 53 - Prob. 9TYKCh. 53 - Prob. 10TYKCh. 53 - The table below shows how many individuals were...Ch. 53 - Prob. 12TYKCh. 53 - Prob. 13TYKCh. 53 - Prob. 14TYKCh. 53 - Prob. 1ITD
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- 23. Wayne Sousa glued small boulders in place within an intertidal boulder field in Santa Barbara and discovered that ... a. low disturbance frequency resulted in a community composed of a mix of r and K-selected species b. low disturbance frequency resulted in a community composed of K-selected species c. species diversity was highest where disturbance frequency was high d. moderate disturbance frequency resulted in a community composed of r-selected species e. species diversity was highest when disturbance frequency was lowarrow_forwardIn landscape ecology, the matrix is the area surrounding a habitat patch. The matrix can affect a species living in the habitat patch by altering: O A. Dispersal between patches B. The availability of resources C. The abiotic environment in patches D. Our appreciation of Keanu Reeves' acting skills E. A, B and C are correctarrow_forwardThe figure shows examples of possible disturbance intensity (y-axis) and frequency (x-axis) combinations. The type of succession occurring after disturbance A is the type of succession occurring after disturbance C is and High A B C D Low Low High Frequency A. primary; climax B. primary; secondary C. primary; little succession occurs D. secondary; primary E. secondary; climax Intensityarrow_forward
- Habitats with moderate levels of disturbance have higher species diversity. Question 2 options: A) True B) Falsearrow_forwardWhich of the following is the definition for species richness? A. The number of species in a community. B. The relative abundance and species richness in a community. C. The number of dominant species in a community. D. The proportion of a given species in the community.arrow_forwardThe relative abundance of any one species within a community of many species is known as a. species evenness. b. species richness. c. specialization. d. population.arrow_forward
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- JosephConnell’s “intermediate disturbance hypothesis” proposes that:a.species diversity is highest at intermediate frequencies of disturbance.b.species diversity is lowest at intermediate frequencies of disturbance.c.population growth rates are highest at intermediate frequencies ofdisturbance.d.competitive exclusion is fastest at intermediate levels of disturbance.e.none of the choices apply.arrow_forwardDisturbancescan alter a community’s stable environmental conditions, also called its:a.frequency.b.intensity.c.heterogeneity.d.equilibrium.e.niche space.arrow_forward1. Species interactions shape biological communities through competition for space, food and mates, and also by predation and symbiotic relationships. a. Define intraspecific competition and give ONE example of how species reduce the competition. b. Define interspecific competition and give ONE example. c. Discuss the TWo types of mimicry adaptations that help some species avoid predation and the role of coloration.arrow_forward
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