Vieira Christophe, Kim Myung Sook, N'Yeurt Antoine De Ramon, Payri Claude, D'Hondt Sofie, De Clerck Olivier, Zubia Mayalen
Department of Biology and Research Institute for Basic Sciences, Jeju National University, Jeju 63243, Republic of Korea.
Phycology Research Group, Center for Molecular Phylogenetics and Evolution, Ghent University, 9000 Ghent, Belgium.
Biology (Basel). 2023 Aug 11;12(8):1124. doi: 10.3390/biology12081124.
Located in the heart of the South Pacific Ocean, the French Polynesian islands represent a remarkable setting for biological colonization and diversification, because of their isolation. Our knowledge of this region's biodiversity is nevertheless still incomplete for many groups of organisms. In the late 1990s and 2000s, a series of publications provided the first checklists of French Polynesian marine algae, including the Chlorophyta, Rhodophyta, Ochrophyta, and Cyanobacteria, established mostly on traditional morphology-based taxonomy. We initiated a project to systematically DNA barcode the marine flora of French Polynesia. Based on a large collection of ~2452 specimens, made between 2014 and 2023, across the five French Polynesian archipelagos, we re-assessed the marine floral species diversity (Alismatales, Cyanobacteria, Rhodophyta, Ochrophyta, Chlorophyta) using DNA barcoding in concert with morphology-based classification. We provide here a major revision of French Polynesian marine flora, with an updated listing of 702 species including 119 Chlorophyta, 169 Cyanobacteria, 92 Ochrophyta, 320 Rhodophyta, and 2 seagrass species-nearly a two-fold increase from previous estimates. This study significantly improves our knowledge of French Polynesian marine diversity and provides a valuable DNA barcode reference library for identification purposes and future taxonomic and conservation studies. A significant part of the diversity uncovered from French Polynesia corresponds to unidentified lineages, which will require careful future taxonomic investigation.
法属波利尼西亚群岛位于南太平洋中心，由于其与世隔绝，成为生物殖民化和多样化的显著场所。然而，对于许多生物群体而言，我们对该地区生物多样性的了解仍不完整。在20世纪90年代末和21世纪初，一系列出版物提供了法属波利尼西亚海藻的首批清单，包括绿藻门、红藻门、褐藻门和蓝细菌，这些清单大多基于传统的形态分类法编制。我们启动了一个项目，对法属波利尼西亚的海洋植物群进行系统的DNA条形码鉴定。基于2014年至2023年间在法属波利尼西亚五个群岛收集的约2452个标本的大量样本，我们结合基于形态学的分类，使用DNA条形码重新评估了海洋植物物种多样性（泽泻目、蓝细菌、红藻门、褐藻门、绿藻门）。我们在此提供了法属波利尼西亚海洋植物群的重大修订版，更新后的清单包括702个物种，其中有119种绿藻、169种蓝细菌、92种褐藻、320种红藻和2种海草——比之前的估计增加了近两倍。这项研究显著提高了我们对法属波利尼西亚海洋多样性的认识，并提供了一个有价值的DNA条形码参考库，用于鉴定以及未来的分类学和保护研究。从法属波利尼西亚发现的很大一部分多样性对应于未鉴定的谱系，这需要未来进行仔细的分类学调查。
