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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Genetic tropicalisation following a marine heatwave
Scientific Reports, Vol.10(1), pp.1-11
29/07/2020
PMCID: PMC7391769
PMID: 32728196
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Abstract
Extreme events are increasing globally with devastating ecological consequences, but the impacts on underlying genetic diversity and structure are often cryptic and poorly understood, hindering assessment of adaptive capacity and ecosystem vulnerability to future change. Using very rare "before" data we empirically demonstrate that an extreme marine heatwave caused a significant poleward shift in genetic clusters of kelp forests whereby alleles characteristic of cool water were replaced by those that predominated in warm water across 200 km of coastline. This "genetic tropicalisation" was facilitated by significant mortality of kelp and other co-occurring seaweeds within the footprint of the heatwave that opened space for rapid local proliferation of surviving kelp genotypes or dispersal and recruitment of spores from warmer waters. Genetic diversity declined and inbreeding increased in the newly tropicalised site, but these metrics were relative stable elsewhere within the footprint of the heatwave. Thus, extreme events such as marine heatwaves not only lead to significant mortality and population loss but can also drive significant genetic change in natural populations.
Details
- Title
- Genetic tropicalisation following a marine heatwave
- Creators
- Melinda A Coleman - NSW FisheriesAntoine J P Minne - Southern Cross UniversitySofie Vranken - University of Western AustraliaThomas Wernberg - University of Western Australia
- Publication Details
- Scientific Reports, Vol.10(1), pp.1-11
- Publisher
- Nature Publishing Report; England
- Grant note
- This research was funded by Australian Research Council Grants DP0663550 to MAC, FT110100174 to TW and DP160100114, DP200100201 to TW and MAC.
- Identifiers
- 991012925658102368
- Copyright
- This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. © The Author(s) 2020
- Academic Unit
- Faculty of Science and Engineering; National Marine Science Centre
- Language
- English
- Resource Type
- Journal article