Multiple Choice
What is the primary difference between a community and an ecosystem in ecological studies?
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51. Community Ecology
Introduction to Community Ecology
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Why do moderate levels of disturbance result in an increase in community diversity?
A
They allow for the coexistence of both competitive and less competitive species.
B
They prevent any species from establishing, maintaining low diversity.
C
They eliminate all species, leading to a reset of the community.
D
They favor only the most competitive species, reducing diversity.
Verified step by step guidance1
Understand the concept of ecological disturbance: Disturbance is any change that disrupts an ecosystem, community, or population structure, often leading to changes in resources, substrate availability, or the physical environment.
Recognize the Intermediate Disturbance Hypothesis: This hypothesis suggests that moderate levels of disturbance can increase species diversity by preventing any one species from dominating the ecosystem.
Analyze the effects of low disturbance: In environments with low disturbance, competitive species may dominate, reducing diversity as they outcompete less competitive species.
Analyze the effects of high disturbance: In environments with high disturbance, few species can survive the extreme conditions, leading to low diversity as many species are eliminated.
Conclude why moderate disturbance increases diversity: Moderate disturbance creates a balance where both competitive and less competitive species can coexist, as it prevents competitive exclusion and allows for a variety of niches to be occupied.
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