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

Ecology Letters 20(10)

Ecology Letters 20(10)

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 – 2017

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.

Titel
Boom-bust dynamics in biological invasions: towards an improved application of the concept
Verfasser
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
Verlag
Wiley-Blackwell
Schlagwörter
alien species; biological invasions; concepts; exotic species; invasive species; long-term; management; non-native species; population collapse; population crash; population dynamics; reckless invaders; systematic review
Datum
2017-08-17
Kennung
doi: 10.1111/ele.12822
Erschienen in
Ecology Letters 20(10): 1337-1350
Sprache
eng
Art
Text
Rechte
© 2017 John Wiley & Sons Ltd/CNRS