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- W2899743395 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 607:37-51 (2018) - DOI: https://doi.org/10.3354/meps12804 Chemoautotrophic food availability influences copepod assemblage composition at deep hydrothermal vent sites within sea knoll calderas in the northwestern Pacific Reina Senokuchi1, Hidetaka Nomaki2, Hiromi Kayama Watanabe2, Tomo Kitahashi2, Nanako O. Ogawa2, Motohiro Shimanaga1,* 1Aitsu Marine Station, Kumamoto University, 6061 Aitsu, Matsushima, Kami-Amakusa, Kumamoto 861-6102, Japan 2Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan *Corresponding author: motohiro@gpo.kumamoto-u.ac.jp ABSTRACT: Meiofaunal taxonomic compositions between adjacent hydrothermal vents located in deep-sea volcanic calderas are predicted to differ more than between vents on mid-ocean ridges, as caldera walls are expected to act as barriers to dispersal. However, taxonomic information on hydrothermal vent meiofauna in volcanic calderas is limited. Here, we investigated the spatial variation in benthic copepod taxonomic composition and its association with selected environmental parameters, including food resources, on chimney structures of vent sites in the calderas of 3 neighboring sea knolls (Bayonnaise Knoll, Myojin Knoll, and Myojin-sho Caldera) on the Izu-Ogasawara Arc, northwestern Pacific Ocean. Spatial differences in order-level copepod taxonomic composition were significantly correlated with differences in stable carbon isotopic signatures (δ13C) of organic matter in the detritus of vent sites; these values reflected the relative contribution of carbon substrates in the vent fluid. The availability of vent chemoautotrophic carbon may have been the primary and a common factor controlling copepod assemblage composition at high taxonomic levels around the hydrothermal vents on these 3 knolls. We also found a bathymetric pattern in the abundance of Stygiopontius senokuchiae, a species of copepod in Dirivultidae specific to vents. While this species dominated Bayonnaise Knoll and Myojin-sho Caldera (depth of 740-800 m), their densities were lower in the deeper Myojin Knoll (depth 1250-1320 m). Our results suggest that the caldera wall may not be a significant dispersal barrier for vent copepods; instead, water depth and chemoautotrophic food resource availability are likely the key factors controlling vent copepod distributions. KEY WORDS: Chemosynthesis · Community composition · Copepod · Deep sea · Dirivultidae · Meiofauna Full text in pdf format Supplementary material PreviousNextCite this article as: Senokuchi R, Nomaki H, Watanabe HK, Kitahashi T, Ogawa NO, Shimanaga M (2018) Chemoautotrophic food availability influences copepod assemblage composition at deep hydrothermal vent sites within sea knoll calderas in the northwestern Pacific. Mar Ecol Prog Ser 607:37-51. https://doi.org/10.3354/meps12804 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 607. Online publication date: December 06, 2018 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2018 Inter-Research." @default.
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- W2899743395 title "Chemoautotrophic food availability influences copepod assemblage composition at deep hydrothermal vent sites within sea knoll calderas in the northwestern Pacific" @default.
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