2019/10/29 by Thomas Sauvage, David L. Ballantine, Kimberly A. Peyton +4 · 1 citation
Earth and Planetary Sciences · Environmental Science · #Marine and coastal plant biology #Geology and Paleoclimatology Research #Polar Research and Ecology
paper · doi:10.1080/09670262.2019.1668061
openalex publication_date 2019/10/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29
Thomas Sauvagea* , David L. Ballantineb, Kimberly A. Peytoncd, Rachael M. Wadec, Alison R. Sherwoodc , Sterling Keeleyc & Celia Smithca Smithsonian Marine Station, 701 Seaway Drive, Fort Pierce, Florida 34949b Department of Botany, U.S. Museum of Natural History, Smithsonian Institution, Washington, DC 20560c Department of Botany, 3190 Maile Way, University of Hawai‘i at Mānoa, Honolulu, Hawai‘i 96822d Hawai‘i Institute of Marine Biology, 46–007 Lilipuna Road, Kāne‘ohe, Hawai‘i 96744CONTACT Thomas Sauvage [email protected] article was originally published with errors, which have now been corrected in the online version.ABSTRACTUdotea geppiorum is reported to form meadows in deep-water, soft sediment habitats in the Main Hawaiian Islands. The identification of the species, initially published as U. argentea in the archipelago, is revised and confirmed based on morphological assessment and comparative DNA sequencing with western Pacific specimens. Udotea geppiorum is fully corticated and newly shown to display discrete concentric segments arranged in a ‘tongue and groove’ manner, which are connected by medullary siphons running along the entire segment interface. Udotea geppiorum is phylogenetically nested among a cluster of Udotea spp. recently circumscribed within Udotea sensu stricto. This cluster of species is separate from the remainder of the family Udoteaceae, which includes several genera and Udotea spp. sensu lato that lack or exhibit incomplete cortication. Based on field observations conducted in O‘ahu and Maui, U. geppiorum can be found from 20 m to > 90 m depth with a peak in abundance at mesophotic depths of 60–85 m, where it forms extensive meadows that support associated diversity.