Question 5 (2 points) Saved The effect of wolves on elk in Yellowstone is an example of __________. A) a top-down interaction B) Poisson distribution C) a bottom-up interaction D) trophism
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Step 2: Analyze the options: A) A top-down interaction: This refers to a trophic cascade where a predator (top of the food chain) controls the population of its prey, which in turn affects the next lower trophic level. In this case, wolves (predator) affect elk Show more…
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The image below illustrates a trophic cascade involving wolves which historically were an apex predator on herbivorous elk in the western United States in places such as Yellowstone Park. Wolf numbers were once significantly reduced by overhunting but their numbers are now increasing due to conservation and reintroduction efforts. Which statement accurately describes the trophic interaction that is occurring in these communities? Reintroduction of wolves has decreased the number of herbivores which has caused increased plant growth. Reintroduction of wolves has decreased the number of herbivores which has caused decreased plant growth. The number of wolves in the community does not seem to impact the trophic structure since there are still so few wolves. Reintroduction of wolves has increased the number of herbivores which has caused increased plant growth.
Asma V.
Results of the reintroduction of wolves to Yellowstone Park in 1995 is a classic example of a Select one: Trophic cascade Interspecific interaction Keystone species Niche concept
Adi S.
A community in which the biomass at each trophic level is controlled by predation at higher trophic levels is consider to be ________. A. top-down control B. bottom up control C. eutrophication D. trophic cascade
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