Sea otters are keystone predators that help to maintain high diversity levels by eating sea urchins. Keystone species fall into broad categories: Predator. D. … large and close to a mainland. C. allow immigration of other predators. A.competitively exclude other predators B.allow immigration of other predators C.prey on the community's dominant species D.prey only on the least abundant species in the community Keystone predators can maintain species diversity in a community if they ANSWER: Correct Chapter 54 Question 6 Part A Food chains are sometimes short because ANSWER: moderate levels of disturbance. human intervention to eliminate disturbance. They can have a profound influence on the balance of organisms in a particular ecosystem.Introduction or removal of this predator, or changes in its population density, can have drastic cascading effects on the equilibrium of many other populations in the ecosystem. D) reduce the number of disruptions in the community. B) prey on the community's dominant species. Keystone predators can maintain species diversity in a community if they _____. Keystone predators can maintain species diversity in a community if they A) competitively exclude other predators. effect of grazing intensity by bison on plant species diversity. c. prey only on the least abundant species in the community. Keystone predators can maintain species diversity in a community if they _____. 1. B. prey on the community s dominant species ʹ. d. reduce the number of disruptions in the community. Answer: B small and … E. none of the above 14 Keystone predators can maintain species diversity in a community if they: Select only ONE answer choice. Remove a keystone predator, and the population of creatures it once hunted can explode, pushing out other organisms and reducing species diversity. Such species help to maintain local biodiversity within a community either by controlling populations of other species that would otherwise dominate the community or by providing critical resources for a wide range of species. Keystone predators can maintain species diversity in a community if they. By keeping the populations and range of their prey in check, keystone predators, impact other predators as well as other animal and plant species further down the food chain. c. allow immigration of other predators. 2. stable conditions with no disturbance. e. prey only on the least abundant species in the community . Which of the following could qualify as a top-down control on a grassland community? a. competitively exclude other predators. A. competitively exclude other predators. d. prey on the community's dominant species B. prey on the community s dominant species ʹ. A. competitively exclude other predators. frequent massive disturbance. D. … A.competitively exclude other predators B.allow immigration of other predators C.prey on the community's dominant species D.prey only on the least abundant species in the community Keystone predators may increase the biodiversity of communities by preventing a single species from becoming dominant. Keystone predators can maintain species diversity in a community if they. prey on the community's dominant species. E. none of the above 14 Keystone predators can maintain species diversity in a community if they: Select only ONE answer choice. C) allow immigration of other predators. b. allow immigration of other predators. Keystone species, in ecology, a species that has a disproportionately large effect on the communities in which it occurs. C. allow immigration of other predators. a. competitively exclude other predators. Examples include lions. b. prey on the community's dominant species. Keystone predators can maintain species diversity in a community if they _____. intensive disturbance by humans. E) prey only on the least abundant species in the community.