Information-Mediated Allee Effects in Breeding Habitat Selection

Area of Science:

• Ecology
• Evolutionary Biology
• Behavioral Ecology

Background:

• Social information is crucial for habitat selection in many species.
• The population-level consequences of using social information for habitat selection are not well understood.
• Low population densities can reduce the efficiency of social information, potentially leading to Allee effects.

Purpose of the Study:

• To develop a general model for information-mediated Allee effects in breeding habitat selection.
• To unify personal and social information, Allee effects, and ecological traps within a single framework.
• To investigate how varying reliance on social information impacts population dynamics and extinction risk.

Main Methods:

• Development of two general models for information-mediated Allee effects.
• Incorporation of personal and social information use, including prospecting on conspecific breeding performance.
• Simulation of population dynamics under different scenarios of information use and habitat availability.

Main Results:

• Dependency on social information can lead to weak or strong Allee effects, influencing population extinction risk.
• Abrupt transitions in population outcomes can occur due to reduced information transfer or minor changes in habitat composition.
• Social information can amplify population declines exacerbated by environmental stressors like habitat loss, but also has the potential to rescue populations from ecological traps.

Conclusions:

• Information-mediated Allee effects represent a significant factor in population dynamics, particularly under changing environmental conditions.
• The reliance on social information can create positive feedback loops that accelerate population declines.
• Understanding the interplay between social information, Allee effects, and habitat quality is critical for conservation efforts.