Predators that are keystone species can maintain species diversity in a community if they
a. Competitively exclude other predators
b. Prey on the community's dominant species
c. Reduce the number of disruptions in the community
d. Prey only on the least abundant species in the community

Verified step by step guidance

1. Understand the concept of a keystone species: A keystone species is one that has a disproportionately large impact on its environment relative to its abundance. Their presence and role in the ecosystem are crucial for maintaining the structure and health of the community.
2. Consider the role of predators as keystone species: Predators can influence the population dynamics of other species in the community, often by controlling the population of prey species.
3. Evaluate the options given in the problem: Analyze how each option might affect species diversity in the community. Consider the ecological impact of each action described.
4. Focus on the option that involves the community's dominant species: Predators that prey on dominant species can prevent these species from monopolizing resources, allowing other species to thrive and maintain diversity.
5. Reflect on the ecological balance: By controlling the population of dominant species, keystone predators help maintain a balance that supports a variety of species, thus enhancing biodiversity.

Key Concepts

Keystone Species

Keystone species are organisms that have a disproportionately large impact on their environment relative to their abundance. They play a critical role in maintaining the structure of an ecological community, affecting many other organisms and helping to sustain biodiversity. Their removal can lead to significant changes in the ecosystem and a loss of species diversity.

Species Diversity

Species diversity refers to the variety and abundance of different species within a community. It is a key component of biodiversity and is important for ecosystem resilience and function. High species diversity often leads to greater stability and productivity in ecosystems, as it allows for a wider range of interactions and adaptations to environmental changes.

Dominant Species

Dominant species are those that are most abundant or have the largest biomass in a community. They exert a strong influence on the community's structure and dynamics, often controlling the availability of resources and the interactions among other species. Predators that target dominant species can help maintain species diversity by preventing these species from monopolizing resources and outcompeting others.