Contrasting patterns of population structure in two habitat‐forming kelp species in southeastern Australia
Rattachement africain : ie, nz, au. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The distribution and connectivity of species around the globe are changing at a rapid pace. Increasing sea temperatures are a driving factor of changes in temperate macroalgal distributions. Southeast Australia is considered a global ocean-warming hotspot, where macroalgal populations are predicted to decline significantly by 2100. We used genotyping by sequencing and Lagrangian particle modeling to compare the genetic population structure and connectivity of two habitat-forming macroalgae, Macrocystis pyrifera and Durvillaea potatorum, in southeastern Australia. Both species showed regional population structures, although this was greatest in D. potatorum, as which populations showed greater dissimilarity than in M. pyrifera. Particle modeling suggested that self-recruitment and connectivity among populations were highest in northeast Tasmania for both species, with particles often stranding along the nearby coast. Intriguingly, the southernmost M. pyrifera population in Tasmania shared more recent ancestry with a mainland Australia population. Although uncommon, simulations indicated that it is possible for rafts of M. pyrifera from mainland Australia to reach far-southern Tasmania. Hindcast simulations indicated those rafts are likely to come from mainland Australia via the Zeehan Current and along the western Tasmanian coast; unsampled western Tasmanian populations might therefore also share close ancestry with western mainland populations. With genetically distinct populations and low connectivity among areas, southeastern Australian kelp populations are vulnerable to losses of genetic diversity. This study provides insights into contemporary population structure and connectivity processes in two kelp species that form important habitats for biodiversity and fisheries on the Great Southern Reef and which are both undergoing range contractions with rapid environmental change.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Contrasting patterns of population structure in two habitat‐forming kelp species in southeastern Australia
- Date Crossref
- 03/03/2026
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Ollscoil na Gaillimhe – University of Galway pays non établi dans la noticeUniversité ou école supérieure
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University of Otago pays non établi dans la noticeUniversité ou école supérieure
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University of Auckland pays non établi dans la noticeUniversité ou école supérieure
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University of Tasmania Institute for Marine and Antarctic Studies pays non établi dans la noticeUniversité ou école supérieure
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University of Waikato pays non établi dans la noticeUniversité ou école supérieure
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Deakin University pays non établi dans la noticeUniversité ou école supérieure
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School of Natural Sciences Ryan Institute pays non établi dans la noticeUniversité ou école supérieure
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School of Biological Sciences pays non établi dans la noticeUniversité ou école supérieure
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Te Aka Mātuatua/School of Science pays non établi dans la noticeUniversité ou école supérieure
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School of Life and Environmental Sciences pays non établi dans la noticeUniversité ou école supérieure
Ollscoil na Gaillimhe – University of Galway, University of Otago et University of Auckland, avec 7 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.