The Shannon Index, H', for community #1 is 1.7; for community #2 it is 1.5. We can conclude that community #1 has a higher than community #2. a. all of these b. species diversity c. species richness d. species evenness
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- According to the island equilibrium model, species richness would be greatest on an island that isa) large and remoteb) large and close to a mainlandc) small and close to a mainlandd) small and remoteThe total number of species present in a community is called the a. species evenness. b. species richness. c. species-area relationship. d. population.Which 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.
- Species richness refers to Group of answer choices a. number of species in a community b. how even in abundance the species in a community are c. extinction rate of species d. number of trophic interactions in a food web e. number of species plus evenness of numbers of individualsIf the slope on a rank abundance curve is m = 0, the species diversity in the community will be? Group of answer choices equal high more information needed lowWhat is species richness? A. The number of species per unit area (example: # species/m^2) B. The number of species present in a community
- 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. variableEcological 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.Which of the following could qualify as a top-down control ona grassland community?(A) limitation of plant biomass by rainfall amount(B) influence of temperature on competition among plants(C) influence of soil nutrients on the abundance of grassesversus wildflowers(D) effect of grazing intensity by bison on plant speciesdiversity
- The 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.The _______________ signifies that species richness is greater where two communities meet than at the center of either community. (a) edge effect (b) fundamental niche (c) character displacement (d) realized niche (e) limiting resourceWhen r is a positive number, the population size is (a) stable (b) increasing (c) decreasing (d) either increasing or decreasing, depending on interference competition (e) either increasing or stable, depending on whether the species is semelparous
