VIGILANCE, PREDATION RISK, AND THE ALLEE EFFECT IN DESERT BIGHORN SHEEP

By M. Mooring, T. A. Fitzpatrick, Tara T. Nishihira, D. Reisig. 2004

126 citations recorded by the source corpus.

View Paper: https://www.semanticscholar.org/paper/bee92cf51cb74ded04c77b0513ef3971b6e13aec

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In Ecology

In Small Animals

Citations in the corpus

Multiple Allee effects and population management. (2007, background): “Combined with reduced juvenile survival at low densities in cod and red sea urchins, these two species could suffer a triple Allee effect (Table 2). Desert bighorn sheep are subject to a component Allee effect resulting from higher predation by mountain lions Felis concolor in smaller groups because”
Trade-offs in activity budget in an alpine ungulate: contrasting lactating and nonlactating females (2008, background): “Although many studies have found that individual time spent in vigilance decreases with increasing group size because other members of the group are also vigilant (Elgar 1989; Hunter & Skinner 1998; Mooring et al. 2004), group size did not influence female activity budget in our study.”
Importance of the Allee effect for reintroductions (2007, background): “For example, predation risk is directly linked to individual vigilance in desert bighorn sheep (Ovis canadensis), and as a result, predation by mountain lion (Felis concolor) is higher in smaller groups, with groups of 5 individuals subject to the greatest predation risk (mooring et al., 2004).”
The evidence for Allee effects (2009, background): “Observational studies typically included both measurements of individual fitness on natural populations (Mooring et al. 2004) and examination of population size across multiple generations (Angulo et al. 2007), and the popularity of this study design can likely be attributed to the availability of…”