A5072202754- Marine Biology and Ecology Research
- Isotope Analysis in Ecology
- Marine and coastal ecosystems
- Geology and Paleoclimatology Research
- Coral and Marine Ecosystems Studies
- Marine and coastal plant biology
- Marine and fisheries research
- Microbial Community Ecology and Physiology
- Methane Hydrates and Related Phenomena
- Parasite Biology and Host Interactions
- Marine and environmental studies
- Coastal wetland ecosystem dynamics
- Protist diversity and phylogeny
- Ichthyology and Marine Biology
- Crustacean biology and ecology
- Radioactive contamination and transfer
- Geological formations and processes
- Animal Behavior and Reproduction
- Geological and Geophysical Studies
- Marine Bivalve and Aquaculture Studies
- Environmental DNA in Biodiversity Studies
- Food Industry and Aquatic Biology
- Fish Ecology and Management Studies
- Microplastics and Plastic Pollution
- Marine animal studies overview
Kumamoto University
2015-2025
Japan Agency for Marine-Earth Science and Technology
2016
The University of Tokyo
2000-2006
Nitobe Memorial Nakano General Hospital
2005
Ocean Institute
2001
Tokyo University of Marine Science and Technology
2000
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 310:95-108 (2006) - doi:10.3354/meps310095 Different ingestion patterns of 13C-labeled bacteria and algae by deep-sea benthic foraminifera Hidetaka Nomaki1,2,*, Petra Heinz3, Takeshi Nakatsuka4, Motohiro Shimanaga2, Naohiko Ohkouchi1, Nanako O. Ogawa1, Kazuhiro Kogure2, Eiko Ikemoto2, Hiroshi Kitazato1...
We measured organic carbon uptake rates by deep-sea benthic foraminifera and studied differences among species, living depth, seasons to investigate how these protists contribute consumption on the floor. In situ feeding experiments using 13C-labeled algae were carried out in central part of Sagami Bay from 24 29 November 2001 1 12 April 2002. Our results indicate that assimilation higher shallow infaunal species (Uvigerina akitaensis, Bulimina aculeata) lower intermediate (Textularia...
A new species of dirivultid copepod (Siphonostomatoida) is described from hydrothermal vents in a volcanic seamount Izu-Bonin Arc, western part North Pacific Ocean. The was collected during the research cruise NT13-09 using R/V Natsushima with ROV Hyper-Dolphin April 2013. type series populations Paralvinella spp. (Annelida: Alvinellidae) on an active vent chimney at depth 795 m. Stygiopontius senokuchiae n. sp. most closely related to S. teres Humes, 1996 but clearly distinguished latter by...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 357:153-164 (2008) - DOI: https://doi.org/10.3354/meps07309 Benthic foraminifera as trophic links between phytodetritus and benthic metazoans: carbon nitrogen isotopic evidence Hidetaka Nomaki1,*, Nanako O. Ogawa1, Naohiko Ohkouchi1, Hisami Suga1, Takashi Toyofuku1, Motohiro Shimanaga2, Takeshi Nakatsuka3,...
Abstract Deep‐sea hydrothermal vents host exceptional ecosystems with lush animal communities primarily relying on organic matter (OM) produced by chemoautotrophic microbes. Though energy sources and food webs at have been extensively studied, the exact carbon of chemosynthetic primary production, such as methane (CH 4 ) dioxide (CO 2 in vent fluid or bottom water, not elucidated quantitatively across spatial scales. Here, we investigate nitrogen 12 species Iheya North field, Okinawa Trough...
Abstract The nitrogen isotopic composition ( δ 15 N) of amino acids can be used to estimate the trophic position organisms with high precision compared bulk tissue analyses, and shed light on potential food sources webs. Sagami Bay, Japan, is located at tectonic plate boundary have complex bottom topography, making multiple organic matter bathyal deep-sea ecosystems. Here, we applied this method benthic animals (meiofauna, macrofauna, megafauna) living 1430 m deep in central Japan. N value...
To examine the specific features of trench communities, spatial changes in assemblages harpacticoids were investigated at family level around Ryukyu Trench (the region) and Kuril region). In region, there high average dissimilarities harpacticoid among trench, slope abyssal plain, indicating that assemblage structures differ substantially between these topographic settings level. Conversely, plain lower than plain. This result suggests hadal is a transition zone this region. addition,...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 622:49-65 (2019) - DOI: https://doi.org/10.3354/meps13053 Nutritional sources of meio- and macrofauna at hydrothermal vents adjacent areas: natural-abundance radiocarbon stable isotope analyses Hidetaka Nomaki1,*, Yuki Uejima2, Nanako O. Ogawa3, Masako Yamane4,7, Hiromi K. Watanabe1, Reina Senokuchi2, Joan M....
Hydrothermal vents are critical to marine geochemical cycling and ecosystem functioning. Although hydrothermal vent-associated megafauna chemoautotrophic prokaryotes have received extensive dedicated study, smaller eukaryotes such as meiofauna nanobiota much less attention. These communities comprise links in trophic flow carbon of other habitats, so study their occurrence role vent ecosystems is warranted. Further, an understudied habitat the thin sediment cover at base chimneys. An initial...