Settlement patterns and temporal successions of coral reef cryptic communities affect diversity assessments using autonomous reef monitoring structures (ARMS).

TitleSettlement patterns and temporal successions of coral reef cryptic communities affect diversity assessments using autonomous reef monitoring structures (ARMS).
Publication TypeJournal Article
Year of Publication2024
AuthorsCouëdel, M, Dettai, A, Guillaume, MMM, Bonillo, C, Frattini, B, J Bruggemann, H
JournalSci Rep
Volume14
Issue1
Pagination27061
Date Published2024 Nov 07
ISSN2045-2322
KeywordsAnimals, Anthozoa, Biodiversity, Coral Reefs, Environmental Monitoring, Indian Ocean, Seasons
Abstract

Autonomous Reef Monitoring Structures (ARMS) are used worldwide to assess cryptic diversity, especially on coral reefs. They were developed as standardised tools, yet conditions of deployment, such as immersion duration and/or deployment and retrieval seasons, vary among studies. Here we studied temporal and seasonal variability in coral reef cryptic communities sampled with 15 ARMS on a single coral reef slope site at Reunion Island, Southwest Indian Ocean. Settlement patterns and temporal succession of Eukaryote communities were investigated across three immersion times (6 months, 1 year, 2 years), two immersion seasons (hot vs. cool) and three fractions (500-2000 μm, 106-500 μm, sessile) using two genetic markers (18S, COI). Both markers detected different taxa with different resolutions, but broadly similar patterns of community composition and structure. While OTU diversity of communities did not change with immersion time and season, these parameters significantly affected community structure and composition. Our results showed a decrease of the similarity of ARMS communities with duration of immersion, and a strong temporal turnover of species with only a small proportion of the diversity persisting over time. The small proportion of OTUs assigned at phylum level highlights the uniqueness of the Mascarene cryptobiome.

DOI10.1038/s41598-024-76834-8
Alternate JournalSci Rep
PubMed ID39511226
PubMed Central IDPMC11543703
Catégorie HCERES
ACL - Peer-reviewed articles
Publication coopération et recherche SUD
Non