#Question id: 11277
#Unit 10. Ecological Principles
If a species is a keystone predator, then its removal from a community should
(A) Increase population size of the predator’s preferred prey
(B) decrease species diversity in the prey community
(C) decrease productivity of the predator’s preferred prey
(D) increase species diversity in the prey community
#Question id: 11278
#Unit 10. Ecological Principles
Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?
A) Oligotrophic lakes are less subject to oxygen depletion.
B) Rates of photosynthesis are lower in eutrophic lakes.
C) Eutrophic lake water contains higher concentrations of nutrients.
D)Sediments in oligotrophic lakes contain larger amounts of decomposable organic matter.
#Question id: 11279
#Unit 10. Ecological Principles
Ecosystem A: Actual link 10, number of species 15
Ecosystem B: Actual link 10, number of species 20
Connectance of ecosystem A and B
#Question id: 11280
#Unit 10. Ecological Principles
Ecosystem services include processes that increase the quality of the abiotic environment. Which of the following processes would fall under this category?
#Question id: 11281
#Unit 10. Ecological Principles
Owls eat rats, mice, shrews, and small birds. Assume that, over a period of time, an owl consumes 5,000 J of animal material. The owl loses 2,300 J in feces and owl pellets and uses 2,500 J for cellular respiration. What is the production efficiency of this owl?
#Question id: 11282
#Unit 10. Ecological Principles
Which of the following ecosystems would likely have the largest net primary productivity per hectare and why?