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Boom-bust dynamics in biological invasions: towards an improved application of the concept

Lookup NU author(s): Dr Pete Robertson



This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).


Boom-bust dynamics – the rise of a population to outbreak levels, followed by a dramatic decline – have been associated with biological invasions and offered as a reason not to manage troublesome invaders. However, boom-bust dynamics rarely have been critically defined, analyzed, or interpreted. Here, we define boom-bust dynamics and provide specific suggestions for improving the application of the boom-bust concept. Boom-bust dynamics can arise from many causes, some closely associated with invasions, but others occurring across a wide range of ecological settings, especially when environmental conditions are changing rapidly. As a result, it is difficult to infer cause or predict future trajectories merely by observing the dynamic. We use tests with simulated data to show that a common metric for detecting and describing boom-bust dynamics, decline from an observed peak to a subsequent trough, tends to severely overestimate the frequency and severity of busts, and should be used cautiously if at all. We review and test other metrics that are better suited to describe boom-bust dynamics. Understanding the frequency and importance of boom-bust dynamics requires empirical studies of large, representative, long-term data sets that use clear definitions of boom-bust, appropriate analytical methods, and careful interpretations.

Publication metadata

Author(s): Strayer DL, D'Antonio CM, Essl F, Fowler MS, Geist J, Hilt S, Jarić I, Jöhnk K, Jones CG, Lambin X, Latzka AW, Pergl J, Pyšek P, Robertson P, von Schmalensee M, Stefansson RA, Wright J, Jeschke JM

Publication type: Article

Publication status: Published

Journal: Ecology Letters

Year: 2017

Volume: 20

Issue: 10

Pages: 1337-1350

Print publication date: 01/10/2017

Online publication date: 17/02/2017

Acceptance date: 20/07/2017

Date deposited: 06/12/2017

ISSN (print): 1461-023X

ISSN (electronic): 1461-0248

Publisher: Wiley-Blackwell Publishing Ltd.


DOI: 10.1111/ele.12822


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