Q56. Deep sea vents are openings in the sea floor where hot water and nutrients
ID: 154827 • Letter: Q
Question
Q56. Deep sea vents are openings in the sea floor where hot water and nutrients spew out. As shown to the right, they have a rich community of species. However, individual vents often become plugged up, while new vents can appear in far flung parts of the ocean. You would expect to find that species who specialize at living around these vents are especially good at:
A.Dispersal
B. Intrinsic growth
C. Local extinctions
D. Patch occupancy
Q57. Approximately what patch occupancy, P, would you expect for a metapopulation at equilibrium with a colonization rate of 1.5 and an extinction rate of 0.6? (Hint: You can calculate the answer using a graph earlier in this section.)
Q58. Roads often decrease dispersal rates for animals and can divide patches in two. How might these consequences of building roads affect the survival of a metapopulation?
A.Roads should generally increase metapopulation survival by dividing patches and thereby creating more potential populations.
B. Roads should generally increase metapopulation survival by reducing dispersal, which increases survival of individual patches.
C.Roads should generally decrease metapopulation survival by reducing dispersal, which decreases recolonization of patches.
D.Roads should generally decrease metapopulation survival by dividing patches, which increases immigration rates.
Q59. For many years, the conservation community debated whether, with a given amount of funding, it would be better to conserve one large patch of land or several smaller patches. Describe situations in which each of those options might be better, justifying your answer based on metapopulation dynamics.
Explanation / Answer
56.A.Dispersal
Frequent dispersal was the only option for vent species to save their numbers.
58.C.Roads should generally decrease metapopulation survival by reducing dispersal, which decreases recolonization of patches.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.