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Marine Achnanthales (Bacillariophyceae) from New Caledonia (Melanesia): assemblage specificities, ultramafic environment

Riaux-Gobin Catherine, Witkowski Andrzej, Coste Michel, Berteaux-Lecellier Veronique, Daniszewska-Kowalczyk Genovefa. 2022-06-21. .
ARTICLE, (2022-06-21 ) - PUBLISHEDVERSION - English (en-GB)

OPENACCESS - http://hal.archives-ouvertes.fr/licences/copyright/.
Audience : OTHER
HAL CCSD, Magnolia Press
Subject
Cocconeidaceae, South Province, ultramafic environments, [SDE]Environmental Sciences
Domains
Sciences de l'environnement
Description

International audience The marine Achnanthales (Bacillariophyceae), with a particular focus on Cocconeidaceae, were investigated in a variety of habitats from the South Province of New Caledonia (Melanesia, Pacific Ocean). Species diversity ranged from species-poor and scarce assemblages on mangrove mud flats to highly diverse and abundant assemblages on short turfs and scrapings of aerial pneumatophores of Avicennia marina. Macroalgae (in place or as sea leash), as well as feces of Acanthopleura gemmata (invertebrate grazer, living on intertidal rocky environments), contained few diatoms, with low diversity. The New Caledonia assemblages show some taxa previously found in the tropical Indian Ocean. Several noteworthy taxa, listed as rare from Polynesia, are not uncommon in New Caledonia, such as Vikingea gibbocalyx and Cocconeis pseudodiruptoides. The notion of endemism concerning marine eukaryotes is approached.

Keywords
Language
English (en-GB)
Creators
Riaux-Gobin, Catherine, Witkowski, Andrzej, Coste, Michel, Berteaux-Lecellier, Veronique, Daniszewska-Kowalczyk, Genovefa
Contributors
Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) ; Université de Perpignan Via Domitia (UPVD)-École pratique des hautes études (EPHE) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), University of Szczecin, Ecosystèmes aquatiques et changements globaux (UR EABX) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Ecologie marine tropicale des océans Pacifique et Indien (ENTROPIE [Nouvelle-Calédonie]) ; Institut de Recherche pour le Développement (IRD [Nouvelle-Calédonie])-Ifremer - Nouvelle-Calédonie ; Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de la Nouvelle-Calédonie (UNC)
Sources
ISSN: 1179-3155, EISSN: 1179-3163, Phytotaxa, https://hal.inrae.fr/hal-03706179, Phytotaxa, 2022, 552 (1), pp.1 - 21. ⟨10.11646/phytotaxa.552.1.1⟩, https://www.biotaxa.org/Phytotaxa/article/view/phytotaxa.552.1.1
Relation
info:eu-repo/semantics/altIdentifier/doi/10.11646/phytotaxa.552.1.1
Coverage
Melanesia
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