Interacting effects of unobserved heterogeneity and individual stochasticity in the life history of the southern fulmar.

ABSTRACT: Individuals are heterogeneous in many ways. Some of these differences are incorporated as individual states (e.g. age, size, breeding status) in population models. However, substantial amounts of heterogeneity may remain unaccounted for, due to unmeasurable genetic, maternal or environmental factors. Such unobserved heterogeneity (UH) affects the behaviour of heterogeneous cohorts via intra-cohort selection and contributes to inter-individual variance in demographic outcomes such as longevity and lifetime reproduction. Variance is also produced by individual stochasticity, due to random events in the life cycle of wild organisms, yet no study thus far has attempted to decompose the variance in demographic outcomes into contributions from UH and individual stochasticity for an animal popula

SUBMITTER: Jenouvrier S 

PROVIDER: S-EPMC5765524 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature