The green world hypothesis was tested by Robert Paine and he found that when you removed the top predator, star fish, from the intertidal zone Group of answer choices: • None of the answers are correct • species diversity stayed the same • species diversity increased • species diversity decreased

The green world hypothesis was tested by Robert Paine and he found that when you removed the top predator, star fish, from the intertidal zone Group of answer choices: • None of the answers are correct • species diversity stayed the same • species diversity increased • species diversity decreased

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter41: Community Ecology

Section: Chapter Questions

Problem 13SA

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Which one of the following statements is FALSE? Beta diversity is low when two ecosystems share the similar species and respective abundance. An intelligent meander records date, time, location and a list of species. Beta diversity or differentiation diversity compares alpha diversity among several communities. Species richness is the total species abundance in an ecosystem. Inventory diversity can be defined by alpha diversity, which is the number of species in a local forest stand.
Which of the following might you expect if you increase the amount of energy (and nutrients) into an ecosystem? Group of answer choices increase rates of competition among species increase the consumption of fossil fuels increase the number of trophic levels decrease the standing crop
Two islands exist in the eastern Pacific. The animal and plant life on both islands were wiped out by a freak storm at the same time. Island "A" is 100 miles off the coast of Peru; whereas island "B" is only 10 miles off Peru's coast. Island "A" is much smaller than island "B" (20 square miles as opposed to 75 square miles). Which island has a higher species richness equilibrium ? Explain why using the Theory of Island Biogeography.
o determine the role of a native starfish species in a coastal ecosystem, zoologist Robert Paine removed starfish from some intertidal pools and not others. He then observed how the community changed in response to the loss of starfish by comparing the diversity of the community in the pools where starfish had been removed to the diversity in pools where he had let the starfish remain. By removing starfish from some pools, what global change driver was Robert Paine investigating? overexploitation pollution climate change invasive species habitat loss
Which community would be expected to have the highest species richness? Group of answer choices A community that inhabits a small geographic area near the poles. A community that inhabits a small geographic area near the equator. A community that inhabits a large geographic area area near the poles. A community that inhabits a large geographic area near the equator.
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 resource
Unrelated species living in geographically separated parts of a biome may resemble one another as a result of ______. a. competitive interactions c. morphological divergence b. morphological convergence d. coevolution
Complete competitors cannot coexist is a statement of the principle of (a) primary succession (b) limiting resources (c) Mllerian mimicry (d) competitive exclusion (e) character displacement
Unrelated species in geographically separated parts of a biome may resemble one another as a result of ______. a. morphologicaI divergence b. morphological convergence c. resource partitioning d. coevolution
Which principle of community ecology is illustrated by the following example: Two closely related species of small fish occupy the upper two feet of water when they occur in separate ponds, but if they are in the same pond, species a is more often found in the uppermost foot, and species b in the foot below.
The graph above is from a paper by Dave Tilman published in 1994. Which of the following statements is consistent with the graph? A) The results contradicts the intermediate disturbance hypothesis B) Increasing diversity increases community stability C) The results support the intermediate disturbance hypothesis.
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 individuals