Distributions of LRS in varying environments

Shripad Tuljapurkar, Wenyun Zuo, Tim Coulson, Carol Horvitz, Jean Michel Gaillard

Research output: Contribution to journalLetterpeer-review

Abstract

The lifetime reproductive success (LRS) of individuals is affected by random events such as death, realized growth or realized reproduction, and the outcomes of these events can differ even when individuals have identical probabilities. Another source of randomness arises when these probabilities also change over time in variable environments. For structured populations in stochastic environments, we extend our recent method to determine how birth environment and birth stage determine the random distribution of the LRS. Our results provide a null model that quantifies effects on LRS of just the birth size or stage. Using Roe deer Capreolus capreolus as a case study, we show that the effect of an individual's birth environment on LRS varies with the frequency of environments and their temporal autocorrelation, and that lifetime performance is affected by changes in the pattern of environmental states expected as a result of climate change.

Original languageEnglish (US)
Pages (from-to)1328-1340
Number of pages13
JournalEcology Letters
Volume24
Issue number7
DOIs
StatePublished - Jul 2021
Externally publishedYes

Keywords

  • autocorrelation
  • environmental stochasticity
  • lifetime reproductive success
  • silver spoon effects
  • state frequency

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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