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J. Okuyama · SciRah

Researcher profile · Semantic Scholar

J. Okuyama

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J. Okuyama — researcher profile on SciRah

h-index: 19
Works: 77
Citations: 890

Most-cited papers

Metamorphism of stratified firn at Dome Fuji, Antarctica: A mechanism for local insolation modulation of gas transport conditions during bubble close off
S. Fujita, J. Okuyama, A. Hori, T. Hondoh
200985 citations Open access
Semantic Scholar
Composition of green turtle feeding aggregations along the Japanese archipelago: implications for changes in composition with current flow
H. Nishizawa, Y. Naito, H. Suganuma, O. Abe +11 more
201356 citations
Semantic Scholar
Preliminary study on homing, site fidelity, and diel movement of black rockfish Sebastes inermis measured by acoustic telemetry
H. Mitamura, K. Uchida, Y. Miyamoto, N. Arai +5 more
2009Fisheries Science45 citations
Semantic Scholar
Population genetic structure and implications for natal philopatry of nesting green turtles Chelonia mydas in the Yaeyama Islands, Japan
H. Nishizawa, O. Abe, J. Okuyama, Masato Kobayashi +1 more
201144 citations
Semantic Scholar
Monitoring beak movements with an acceleration datalogger: a useful technique for assessing the feeding and breathing behaviors of sea turtles
J. Okuyama, Y. Kawabata, Y. Naito, N. Arai +1 more
200943 citations Open access
Semantic Scholar
Trans-Pacific dispersal of loggerhead turtle hatchlings inferred from numerical simulation modeling
J. Okuyama, T. Kitagawa, K. Zenimoto, Shingo Kimura +3 more
201137 citations
Semantic Scholar
Ethogram of Immature Green Turtles: Behavioral Strategies for Somatic Growth in Large Marine Herbivores
J. Okuyama, Kana Nakajima, T. Noda, Satoko S. Kimura +6 more
2013PLoS ONE36 citations Open access
Semantic Scholar
Wild versus head-started hawksbill turtles Eretmochelys imbricata: post-release behavior and feeding adaptions
J. Okuyama, Tomohito Shimizu, O. Abe, K. Yoseda +1 more
201036 citations Open access
Semantic Scholar
Comparative Phylogeny and Historical Perspectives on Population Genetics of the Pacific Hawksbill (Eretmochelys imbricata) and Green Turtles (Chelonia mydas), Inferred from Feeding Populations in the Yaeyama Islands, Japan
H. Nishizawa, J. Okuyama, Masato Kobayashi, O. Abe +1 more
2010Zoological Science33 citations
Semantic Scholar
Ontogeny of the dispersal migration of green turtle (Chelonia mydas) hatchlings
J. Okuyama, O. Abe, H. Nishizawa, Masato Kobayashi +2 more
200933 citations
Semantic Scholar
The regularity of dive performance in sea turtles: a new perspective from precise activity data
J. Okuyama, Kengo Kataoka, Masato Kobayashi, O. Abe +2 more
201230 citations
Semantic Scholar
Observation of low-temperature object by phase-contrast x-ray imaging : Nondestructive imaging of air clathrate hydrates at 233 K
S. Takeya, K. Honda, A. Yoneyama, Y. Hirai +4 more
200628 citations Open access
Semantic Scholar
Decision tree classification of behaviors in the nesting process of green turtles (Chelonia mydas) from tri-axial acceleration data
H. Nishizawa, T. Noda, T. Yasuda, J. Okuyama +2 more
2013Journal of ethology27 citations
Semantic Scholar
Post-release movement and diel activity patterns of hatchery-reared and wild black-spot tuskfish Choerodon schoenleinii determined by ultrasonic telemetry
Y. Kawabata, J. Okuyama, H. Mitamura, K. Asami +2 more
2007Fisheries Science27 citations
Semantic Scholar
Spawning aggregation of white-streaked grouper Epinephelus ongus: spatial distribution and annual variation in the fish density within a spawning ground
A. Nanami, Taku Sato, Y. Kawabata, J. Okuyama
2017PeerJ24 citations Open access
Semantic Scholar
Monitoring attitude and dynamic acceleration of free-moving aquatic animals using a gyroscope
T. Noda, J. Okuyama, T. Koizumi, N. Arai +1 more
201224 citations Open access
Semantic Scholar
The post‐release process of establishing stable home ranges and diel movement patterns of hatchery‐reared black‐spot tuskfish Choerodon schoenleinii
Y. Kawabata, J. Okuyama, K. Asami, K. Yoseda +1 more
200824 citations
Semantic Scholar
Surfacers change their dive tactics depending on the aim of the dive: evidence from simultaneous measurements of breaths and energy expenditure
J. Okuyama, Runa Tabata, Kana Nakajima, N. Arai +2 more
2014Proceedings of the Royal Society of London. Biological Sciences21 citations Open access
Semantic Scholar
Vertical migration patterns linked to body and environmental temperatures in chub mackerel
T. Yasuda, J. Kinoshita, Yohei Niino, J. Okuyama
2023Progress in Oceanography20 citations Open access
Semantic Scholar
Effects of a tropical cyclone on the distribution of hatchery-reared black-spot tuskfish Choerodon schoenleinii determined by acoustic telemetry.
Y. Kawabata, J. Okuyama, K. Asami, K. Okuzawa +2 more
2010Journal of Fish Biology19 citations
Semantic Scholar
Heart rate and cardiac response to exercise during voluntary dives in captive sea turtles (Cheloniidae)
J. Okuyama, Maika Shiozawa, Daisuke Shiode
2020Biology Open17 citations Open access
Semantic Scholar
Application of a computer vision technique to animal-borne video data: extraction of head movement to understand sea turtles’ visual assessment of surroundings
J. Okuyama, Kana Nakajima, Kentaro Matsui, Yuichi Nakamura +3 more
2015Animal Biotelemetry15 citations Open access
Semantic Scholar
Physical properties of the P96 ice core from Penny Ice Cap, Baffin Island, Canada, and derived climatic records
J. Okuyama, H. Narita, T. Hondoh, R. Koerner
200315 citations
Semantic Scholar
Latitudinal cline in the foraging dichotomy of loggerhead sea turtles reveals the importance of East China Sea for priority conservation
J. Okuyama, A. Watabe, Shunichi Takuma, Kentaro Tanaka +8 more
2022Diversity and Distributions: A journal of biological invasions and biodiversity14 citations Open access
Semantic Scholar
Changes in dive patterns of leatherback turtles with sea surface temperature and potential foraging habitats
J. Okuyama, S. Benson, P. Dutton, J. A. Seminoff
2021Ecosphere14 citations Open access
Semantic Scholar
Quarter-Century (1993–2018) Nesting Trends in the Peripheral Populations of Three Sea Turtle Species at Ishigakijima Island, Japan
J. Okuyama, Hisakazu Ishii, S. Tanizaki, Tomoko Suzuki +8 more
2020Chelonian Conservation and Biology14 citations Open access
Semantic Scholar
Pressure drop of slush nitrogen flow in converging–diverging pipes and corrugated pipes
K. Ohira, J. Okuyama, Kei Nakagomi, Koichi Takahashi
201214 citations
Semantic Scholar
Utility of carapace images for long-term photographic identification of nesting green turtles
Kohei Tabuki, H. Nishizawa, O. Abe, J. Okuyama +1 more
2021Journal of Experimental Marine Biology and Ecology11 citations
Semantic Scholar
Animal-borne soundscape logger as a system for edge classification of sound sources and data transmission for monitoring near-real-time underwater soundscape
Takuji Noda, Takuya Koizumi, Naoto Yukitake, Daisuke Yamamoto +5 more
2024Scientific Reports9 citations Open access
Semantic Scholar
Post-release horizontal and vertical behavior and philopatry of deepwater longtail red snapper Etelis coruscans around a bank
J. Okuyama, Hirotoshi Shishidou, T. Hayashibara
2019Fisheries Science7 citations
Semantic Scholar
Pressure drop reduction and heat transfer deterioration of slush nitrogen in triangular and circular pipe flows
K. Ohira, Kizuku Kurose, J. Okuyama, Yutaro Saito +1 more
20176 citations
Semantic Scholar
Polymorphic foraging tactics in a marine reptile: insight from horizontal movement and dive behavior analyses
K. Fujita, H. Nishizawa, J. Okuyama, M. Arita +3 more
2023Marine Ecology Progress Series5 citations
Semantic Scholar
Fine-Scale Monitoring of Routine Deep Dives by Gravid Leatherback Turtles during the Internesting Interval Indicate a Capital Breeding Strategy
J. Okuyama, J. A. Seminoff, P. Dutton, S. Benson
2016Frontiers in Marine Science5 citations Open access
Semantic Scholar
Harvesting energy from the oscillation of aquatic animals: testing a vibration-powered generator for bio-logging data logger systems
T. Noda, J. Okuyama, Y. Kawabata, H. Mitamura +1 more
20145 citations
Semantic Scholar
Seasonal fluctuation in the length-weight relationship of groupers in the Goto Islands, Japan
J. Okuyama, M. Nakagawa
2022Thalassas: An International Journal of Marine Sciences4 citations
Semantic Scholar
Individual spawning performance and mating pair combinations in captive grouper aggregations
J. Okuyama, Tomofumi Yamaguchi
2022Environmental Biology of Fishes4 citations
Semantic Scholar
A validation of abstracted dive profiles relayed via the Argos satellite system: a case study of a loggerhead turtle
Narumi Kishida, J. Okuyama, M. Arita, Natsuki Kume +4 more
2022Animal Biotelemetry4 citations Open access
Semantic Scholar
Random Mate Searching: Male Sea Turtle Targets Juvenile for Mating Behavior
J. Okuyama, Shiro Kagawa, N. Arai
20144 citations Open access
Semantic Scholar
A rapid increase in tropical species of grouper (Perciformes: Serranidae) in the temperate waters, the Goto Islands, Japan
J. Okuyama, M. Nakagawa, Takeshi Taneda
2024PLoS ONE3 citations Open access
Semantic Scholar
Genetic diversity of the green turtle nesting populations in Yaeyama Archipelago, Japan
H. Nishizawa, J. Okuyama, O. Abe, Masato Kobayashi +2 more
20093 citations
Semantic Scholar
Gravid green turtles employ a mixed capital–income breeding strategy where food is abundant
J. Okuyama, N. Kishida, H. Nishizawa, Y. Obe +9 more
2025Marine Ecology Progress Series2 citations Open access
Semantic Scholar
Behavioural characteristics of loggerhead turtles ( Caretta caretta ) in a submerged bag net of a setnet observed in a bycatch simulation and the development of a turtle releasing device
Maika Shiozawa, Daisuke Shiode, J. Okuyama, F. Hu +1 more
2019Aquatic conservation2 citations
Semantic Scholar
Pressure-drop reduction and heat-transfer deterioration of slush nitrogen in triangular pipe flow.
K. Ohira, J. Okuyama, Koichi Takahashi
20152 citations
Semantic Scholar
Correction: Ethogram of Immature Green Turtles: Behavioral Strategies for Somatic Growth in Large Marine Herbivores
J. Okuyama, Kana Nakajima, T. Noda, Satoko S. Kimura +6 more
2013PLoS ONE2 citations Open access
Semantic Scholar
Preliminary result of the relationship between the breathing frequency and dynamic body acceleration
Y. Kawabata, J. Okuyama, Y. Naito, N. Arai +2 more
20102 citations
Semantic Scholar
Study on conservation and enhancement of endangered sea turtles using animal behavioral information
J. Okuyama
20072 citations
Semantic Scholar
Estabulishment of biologging approach to sea turtle in the neritic environment
Kengo Kataoka, J. Okuyama, Masato Kobayashi, O. Abe +2 more
20062 citations
Semantic Scholar
Dispersal processes of head-started hawksbill turtles (Eretmochelys imbricate) in the Yaeyama Islands waters, Okinawa, Japan
J. Okuyama, Tomohito Shimizu, O. Abe, K. Yoseda +1 more
20052 citations
Semantic Scholar
A new technique for monitoring grazing behavior of Hawksbill turtles (Eretmochelys imbricata) using acceleration data loggers
J. Okuyama, Tomohito Shimizu, O. Abe, K. Yoseda +1 more
20042 citations
Semantic Scholar
The Relationship between the Number of Breaths and Diving Profile of a Nesting Green Turtle, Chelonia mydas
Yuka Obe, J. Okuyama, H. Nishizawa, T. Yasuda +2 more
20141 citations
Semantic Scholar

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