The Island Biogeography Model of Robert MacArthur and E

question 34

Multiple Choice

The island biogeography model of Robert MacArthur and E.O. Wilson predicts a higher value of ŝ , the equilibrium number of species, for larger islands close to a source pool and a lower value of ŝ for small islands far from the source pool. Their reasoning for these predictions is that larger islands support larger populations, lowering the risk of extinction, while closer islands have higher immigration rates because the immigrants do not have to travel as far. What other reasons could you give to justify their predictions? Check all that apply.

• A) Larger islands tend to support species that are more adaptable and therefore, less prone to extinction.
• B) Larger islands have a greater range of habitats and can support larger populations.
• C) Closer islands are more likely to have intermediate levels of disturbance, increasing diversity.
• D) Closer islands are more likely to receive immigrants of species already present on the island, and this continued immigration can "rescue" species that might have otherwise gone extinct.

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Definitions:

Collective Leadership

Involves the shared exercise of leadership roles and responsibilities among members of a group or organization, fostering collaboration and distributed decision-making.

Idiosyncrasy Credits

The leeway or tolerance granted to individuals for deviating from group norms due to their previously established competence or contributions.

Followership

The behaviors and attitudes of individuals who follow and support their leaders, highlighting the importance of active and effective participation in a leadership context.

Implicit Followership Theories

Individual beliefs or assumptions about the traits and behaviors that characterize followers, affecting leadership interaction and expectations.