Information-mediated Allee effects in breeding habitat selection

Social information is used widely in breeding habitat selection and provides an efficient means for individuals to select habitat; however, the population-level consequences of this process are not well explored. At low population densities, efficiencies may be reduced because there are insufficient ‘information providers’ as cues for high-quality habitat. This constitutes what we term an ‘information-mediated Allee effect’. We present the first general model for an information-mediated Allee effect applied to breeding habitat selection, and unify personal and social information, Allee effects, and ecological traps into a common framework. In a second model, we consider an explicit mechanism of social information gathering through prospecting on conspecific breeding performance. In each model, we independently vary personal and social information use to demonstrate how dependency on social information may result in either weak or strong Allee effects that, in turn, affect populati...