Subject
Distribution, Endemics, Iˆle Amsterdam, Sphagnales, Taxonomy, [SDE.BE]Environmental Sciences/Biodiversity and Ecology

Domains
Biologie, Ecologie, Sciences de l'environnement

Description

International audience The taxonomy of three recently collected species of peat mosses (Sphagnales) from Iˆle Amsterdam, Terres Australes et Antarctiques Franc¸aises, is reviewed. Two species belong to Sphagnum subgenus Subsecunda, while a third has uncertain taxonomic affinity. One of the Subsecunda species has previously been described under the name S. islei Warnst. based on material from Iˆle Amsterdam and we provide an amended description. A second species is described as S. complanatum sp. nov. Both species share morphological characteristics with S. capense Hornsch., known from Southern Africa, Malawi, Madagascar, and Reunion. The third species is distinguished by several morphological characteristics and is described as S. cavernulosum sp. nov. It has morphological characteristics that are shared with the subgenera Sphagnum and Acutifolia, and also subgenus Subsecunda. Among known Sphagnum species, the closest morphological relative seems to be S. novo-caledoniae Paris & Warnst., described from southern Melanesia in Oceania. The morphology of these three species is described. At present, these three species appear to be endemic to Iˆle Amsterdam. Their phylogenetic affinities and likely evolutionary histories are discussed based on their morphological characteristics. Molecular data are necessary for further evaluation of their phylogeny, taxonomic relationships, and phylogeography, but repeated attempts to obtain gene sequences have so far failed.

Keywords

Language
English (en-GB)

Creators
Flatberg, Kjell I., Whinam, Jennie, Lebouvier, Marc

Contributors
Museum of Natural History and Archaeology ; Norwegian University of Science and Technology [Trondheim] (NTNU) ; Norwegian University of Science and Technology (NTNU)-Norwegian University of Science and Technology (NTNU), Australian National University (ANU), Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO) ; Université de Rennes 1 (UR1) ; Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut Ecologie et Environnement (INEE) ; Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) ; Université de Rennes 1 (UR1) ; Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2) ; Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2) ; Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Projet IPEV n°136 ECOBIO CNRS Z A Antarctique SCAR Program Evoluiton and Biodiversity in Antarctica

Sources
ISSN: 0373-6687, Journal of Bryology, https://hal.archives-ouvertes.fr/hal-00645825, Journal of Bryology, Maney Publishing, 2011, 33 (2), pp.105-121. ⟨10.1179/1743282010Y.0000000019⟩

Relation
info:eu-repo/semantics/altIdentifier/doi/10.1179/1743282010Y.0000000019

Coverage
Melanesia

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