A1 Journal article (refereed)
Are there plenty of fish in the sea? How life history traits affect the eco-evolutionary consequences of population oscillations (2022)

Ahti, P. A., Uusi-Heikkilä, S., & Kuparinen, A. (2022). Are there plenty of fish in the sea? How life history traits affect the eco-evolutionary consequences of population oscillations. Fisheries Research, 254, Article 106409. https://doi.org/10.1016/j.fishres.2022.106409

JYU authors or editors

Publication details

All authors or editors: Ahti, Pauliina A.; Uusi-Heikkilä, Silva; Kuparinen, Anna

Journal or series: Fisheries Research

ISSN: 0165-7836

eISSN: 1872-6763

Publication year: 2022

Publication date: 28/06/2022

Volume: 254

Article number: 106409

Publisher: Elsevier

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.fishres.2022.106409

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/82385

Abstract

Understanding fish population oscillations is important for both fundamental population biology and for fisheries science. Much research has focused on the causes of population oscillations, but the eco-evolutionary consequences of population oscillations are unclear. Here, we used an empirically parametrised individual-based simulation model to explore the consequences of oscillations with different amplitudes and wavelengths. We show that oscillations with a wavelength shorter than the maximum lifespan of the fish produce marked differences in the evolutionary trajectories of asymptotic length. Wavelengths longer than the maximum lifespan of the fish, in turn, mainly manifest as ecological effects seen as the population biomass oscillation. The evolutionary and ecological differences increase with increasing amplitude, however, the two-year wavelength causes opposing results from all the other scenarios. This is likely facilitated by the relatively stable number of fish in the population as a poor year is always counteracted by the previous good year and vice versa. Our results highlight the evolutionary signatures and following ecological consequences that natural population oscillations can cause.

Keywords: fishes; fish populations; populations; population ecology; evolutionary biology; ecosystems (ecology)

Free keywords: eco-evolutionary dynamics; population oscillation; density dependency; fisheries

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Related projects

Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 1