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Global biogeography and diversification of a group of brown seaweeds (Phaeophyceae) driven by clade-specific evolutionary processes
Citatie
Vieira, Christophe et al. (2021), Global biogeography and diversification of a group of brown seaweeds (Phaeophyceae) driven by clade-specific evolutionary processes, Dryad, Dataset, https://doi.org/10.5061/dryad.9s4mw6mf7

Beschikbaarheid: CC0 Voor zover mogelijk onder de wet, heeft de persoon, die CC0 toegekend heeft aan deze dataset, afstand gedaan van alle auteurs- en aanverwante rechten.

Beschrijving
Investigation of the evolutionary processes within the Dictyotales. meer

Aim: Historical processes that shaped current diversity patterns of seaweeds remain poorly understood. Using Dictyotales, a globally distributed order of brown seaweeds as a model, we test if historical biogeographical and diversification patterns are comparable across clades. Dictyotales contain some 22 genera, three of which, Dictyota, Lobophora and Padina, are exceptionally diverse. Specifically we test if the evolutionary processes in these clades that shaped their latitudinal diversity patterns are in line with the tropical conservatism, the out-of-the-tropics, and diversification rate hypotheses.

Methods: Species diversity was inferred using DNA-based species delineation, addressing cryptic diversity and circumventing taxonomic problems. A six-gene time-calibrated phylogeny, distribution data of 3,755 specimens, and probabilistic modeling of geographic range evolution was used to infer historical biogeographical patterns. The phylogeny was tested against different trait dependent models in order to compare diversification rates for different geographical units as well as different thermal affinities.

Results: The Dictyotales originated in the Middle Jurassic and reach a current peak of species diversity in the Central Indo-Pacific. Ancestral range estimation points to a southern hemisphere origin of Dictyotales corresponding to the tropical southern Tethys Sea. Our results demonstrate that diversification rates were generally higher in tropical regions, but increased diversification rates in different clades are driven by different processes. Three major clades underwent a major diversification burst in the early Cenozoic, with Dictyota and Padina expanding their distribution into temperate regions, while Lobophora retained a predominantly tropical niche.

Main conclusions: Our results are consistent with both the tropical conservatism hypothesis, in which clades originate and remain in the tropics (Lobophora), and the out-of-the-tropics scenario, where taxa originate and expand towards the temperate regions while preserving their presence in the tropics (Dictyota, Padina).


Scope
Thema's:
Biologie > Macroalgen
Kernwoorden:
Benthic flora, Benthisch milieu, Biogeografie, Bodemalgen, Evolutionary pattern, Evolutionary trees, Historical biogeography, Kustgebied, Kustmilieu, Kustwateren, Marien milieu, Phaeophyceae, Phylogenetic taxonomy, Phylogeny, Scripts, Zeewieren, Globaal, Dictyotales, Phaeophyceae

Geografische spreiding
Globaal

Taxonomic coverage
Dictyotales [WoRMS]
Phaeophyceae [WoRMS]

Parameter
Algendiversiteit

Bijdrage door
University of Costa Rica, meerdata creator
Universiteit Gent (UGent), meerdata creator
Kobe University, meerdata creator
Vlaams Instituut voor de Zee (VLIZ), meerdata creator
Universiteit Gent; Faculteit Wetenschappen; Vakgroep Biologie; Onderzoeksgroep Fycologie, meerdata creator
Vlaamse overheid; Beleidsdomein Economie, Wetenschap en Innovatie; Plantentuin Meise, meerdata creator
University of Gothenburg, meerdata creator
Institut de Recherche pour le Développement (IRD), meerdata creator
blue[c]weed, meerdata creator
University of New Brunswick (UNB), meerdata creator
Roger Williams University (RWU), meerdata creator

Publicatie
Gebaseerd op deze dataset
Vieira, C. et al. (2021). Global biogeography and diversification of a group of brown seaweeds (Phaeophyceae) driven by clade‐specific evolutionary processes. J. Biogeogr. 48(4): 703-715. https://dx.doi.org/10.1111/jbi.14047, meer

Dataset status: Afgelopen
Data type: Software
Data oorsprong: Onderzoek
Metadatarecord aangemaakt: 2021-12-20
Informatie laatst gewijzigd: 2022-02-02
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