Resource partitioning is a mechanism by which species reduce competition by using different resources or niches. Which example best illustrates this?

Resource partitioning is a mechanism by which species reduce competition by using different resources or niches. Which example best illustrates this?

• A. One species displaces the other from the habitat entirely.
• B. A species migrates to another continent.
• C. Two bird species feed on insects in different parts of a tree.
• D. Two species compete for the exact same seed type at the same height.

Answer: (C)

Resource partitioning happens when species reduce competition by using different parts of the environment or different resources, allowing them to coexist. In this example, two bird species feed on insects in different parts of a tree, so each specializes in a slightly different niche within the same area. By occupying distinct feeding zones, they minimize overlap in their food resources and space, which lowers direct competition and supports coexistence. Other scenarios don’t illustrate this division of resources. Displacing a species from the habitat is competitive exclusion, not partitioning. Migrating to another continent is geographic separation rather than sharing the same space with differentiated niches. Competing for the exact same seed at the same height shows high overlap in resource use, which isn’t partitioning.

Resource partitioning happens when species reduce competition by using different parts of the environment or different resources, allowing them to coexist. In this example, two bird species feed on insects in different parts of a tree, so each specializes in a slightly different niche within the same area. By occupying distinct feeding zones, they minimize overlap in their food resources and space, which lowers direct competition and supports coexistence.

Other scenarios don’t illustrate this division of resources. Displacing a species from the habitat is competitive exclusion, not partitioning. Migrating to another continent is geographic separation rather than sharing the same space with differentiated niches. Competing for the exact same seed at the same height shows high overlap in resource use, which isn’t partitioning.