Journal article
Genotype–Environment mismatch of kelp forests under climate change
Molecular Ecology, Vol.30(15), pp.3730-3746
08/2021
PMID: 34018645
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Source: InCites
Abstract
Climate change is increasingly impacting ecosystems globally. Understanding adaptive genetic diversity and whether it will keep pace with projected climatic change is necessary to assess species’ vulnerability and design efficient mitigation strategies such as assisted adaptation. Kelp forests are the foundations of temperate reefs globally but are declining in many regions due to climate stress. A lack of knowledge of kelp's adaptive genetic diversity hinders assessment of vulnerability under extant and future climates. Using 4245 single nucleotide polymorphisms (SNPs), we characterized patterns of neutral and putative adaptive genetic diversity for the dominant kelp in the southern hemisphere (Ecklonia radiata) from ~1000 km of coastline off Western Australia. Strong population structure and isolation-by-distance was underpinned by significant signatures of selection related to temperature and light. Gradient forest analysis of temperature-linked SNPs under selection revealed a strong association with mean annual temperature range, suggesting adaptation to local thermal environments. Critically, modelling revealed that predicted climate-mediated temperature changes will probably result in high genomic vulnerability via a mismatch between current and future predicted genotype–environment relationships such that kelp forests off Western Australia will need to significantly adapt to keep pace with projected climate change. Proactive management techniques such as assisted adaptation to boost resilience may be required to secure the future of these kelp forests and the immense ecological and economic values they support.
Details
- Title
- Genotype–Environment mismatch of kelp forests under climate change
- Creators
- Sofie Vranken - University of Western AustraliaThomas Wernberg - University of Western AustraliaArmin Scheben - University of Western AustraliaAnita Alice Severn‐Ellis - University of Western AustraliaJacqueline Batley - University of Western AustraliaPhilipp Emanuel Bayer - University of Western AustraliaDavid Edwards - University of Western AustraliaDavid Wheeler - New South Wales Department of Primary IndustriesMelinda Ann Coleman - University of Western Australia
- Publication Details
- Molecular Ecology, Vol.30(15), pp.3730-3746
- Publisher
- Wiley-Blackwell Publishing Ltd.
- Grant note
- This research was funded through DP160100114 granted to T.W. and M.A.C. and by a Holsworth Wildlife Research Endowment Grant of The Ecological Society of Australia and a Robson and Robertson award granted to S.V. S.V. and A.S. were supported by an IPRS awarded by the Australian Government
- Identifiers
- 991012948598402368
- Copyright
- © 2021 John Wiley & Sons Ltd.
- Academic Unit
- Faculty of Science and Engineering; School of Environment, Science and Engineering; National Marine Science Centre; Science
- Language
- English
- Resource Type
- Journal article