Noisy clockwork: Time series analysis of population fluctuations in animals

O. N. Bjørnstad, B. T. Grenfell

Research output: Contribution to journalReview articlepeer-review

504 Scopus citations


Both biotic interactions and abiotic random forcing are crucial influences on population dynamics. This frequently leads to roughly equal importance of deterministic and stochastic forces. The resulting tension between noise and determinism makes ecological dynamics unique, with conceptual and methodological challenges distinctive from those in other dynamical systems. The theory for stochastic, nonlinear ecological dynamics has been developed alongside methods to test models. A range of dynamical components has been considered - density dependence, environmental and demographic stochasticity, and dimatic forcing - as well as their often complex interactions. We discuss recent advances in understanding ecological dynamics and testing theory using long-term data and review how dynamical forces interact to generate some central field and laboratory time series.

Original languageEnglish (US)
Pages (from-to)638-643
Number of pages6
Issue number5530
StatePublished - Jul 27 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General


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