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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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
In 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 correct
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 low
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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- The 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_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
- Based on the intermediate disturbance hypothesis, a community's species diversity is increased bya) frequent immigrations of new speciesb) moderate levels of disturbancec) intensive disturbance by humansd) stable conditions with no disturbancearrow_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_forwardDisturbancescan alter a community’s stable environmental conditions, also called its:a.frequency.b.intensity.c.heterogeneity.d.equilibrium.e.niche space.arrow_forward
- 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_forwardEcological dominants are a. the most numerous or make up the most biomass within a community. b. are species that may not be the most numerous within a community, but whose role is so significant that its absence would bring about considerable change. c. species that are introduced into an area where they do not naturally occur. d. the most important species on the planet.arrow_forward1. Define the following terms: a. Species Richness b. Species Evenness c. Species Diversityarrow_forward
- Which of the following statements is/are consistent with the Intermediate disturbance hypothesis? Species diversity is maximized in areas that experience high levels of disturbance Areas with low levels of disturbance will be dominated by K selected species Decades of suppression in California has likely increased diversity in our national forests Areas with intermediate levels of disturbance will have the lowest levels of diversityarrow_forwardUnder what conditions can the realized niche of a species exceed its fundamental niche? a. never b. when the species is transported out of its natural geographic range c. when the species experiences mutualistic interactions with another species d. when the species is relieved of competition with another species e. all of the above (except for never)arrow_forwardWhich of the following statements is FALSE regarding ecological disturbances? I. Communities that experience moderate disturbances often exhibit greater species diversity than other communities. II. Moderate disturbances create openings/opportunities for colonizing species. III. Major disturbances generally allow the vast majority of species to survive in disturbed areas leaving areas quite open to large numbers of colonizing species. A) I only B) II only C) I and II only D) I, II, and IIIarrow_forward
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