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Argos satellite telemetry studies over the last two decades revealed that sea turtles undertake wide-range migration, and often trans-oceanic migration. Moreover, advanced Argos PTT (Platform Transmitter Terminal) provide fine-scale information of dive behavior, and the fact that they are capable of diving into deep waters. At the 2nd Argos Asian Wildlife Tracking Workshop, Dr. Junichi Okuyama will introduce Argos tracking projects focusing on two sea turtle species; leatherback turtle (Dermochelys coriacea) and loggerhead turtle (Carreta caretta) in the North Pacific. These tracking studies revealed the foraging hotspots and thermal strategy of leatherback turtles in the North Pacific, and also the migration dichotomy of loggerhead turtles nesting at the Japanese archipelago. 

Dr. Junichi Okuyama

scientist j. okuyama
Dr. J. Okuyama

Dr. Junichi Okuyama is a researcher at the Research Center for Subtropical Fisheries, Seikai National Fisheries Research Institute, Fisheries Research Agency, Japan. He specializes in behavioral ecology, behavioral physiology and conservation biology of marine organisms including sea turtles. His main research methods are bio-logging and biotelemetry. His current interest is to categorize/ assume unobservable underwater behavior of marine animals using bio-logging data and machine learning. He also works on how external (environmental) and/or internal (physiological) factors affect on the behavior of marine organisms.

Visit Dr. Junichi Okuyama’s facebook page.

Le thon rouge suivi par les scientifiques d'Ifremer

03.07.2017 JTA Events Fifteenth Session of Argos Joint Tariff Agreement Executive Committee

18 – 19 July 2017, Toulouse, France Participant Documents Place Name Country   Executive Committee   Eric LOCKLEAR (Executive Committee Chair) United States     Kim HOLLAND United States     Salim JAVED United Arab Emirates     Clive Mc Mahon Australia  …
Pacific cod

19.06.2017 2nd Argos Asian Workshop Movement of Pacific cod in Korean waters

At the 2nd Argos Asian Wildlife Tracking Workshop in Incheon, Korea, Dr. Sukyung Kang of Korea’s National Institute of Fisheries will present the results of her study: “Movement of Pacific cod (Gadus macrocephalus) in Korean waters, ascertained through pop-up archival tags”. Pacific Cod movements in Korean waters as revealed by Argos…
2nd Argos Asian Wildlife Tracking Workshop

13.06.2017 Animal tracking applications 2nd Argos Asian Wildlife Tracking Workshop

The 2nd Argos Asian Wildlife Tracking Workshop will be held in Incheon, Korea, on July 4th & 5th, 2017. It is hosted by Dr. Jin-Han Kim, Director of  the Animal Resources Division, National Institute of Biological Resources, Korea and supported by Dr. Su-Kyung Kang, NIFS (National Institute of Fisheries Science).  All Argos users,…
Billfish with Argos tag

30.05.2017 2nd Argos Asian Workshop Billfish movement patterns revealed with Argos pop-up satellite tags

Dr. Wei-Chuan (Riyar) Chiang of Fisheries Research Institute, Taiwan, will share the results of his studies on “Vertical and horizontal movements of billfish in the northwestern Pacific Ocean determined using pop-up satellite tags” at the 2nd Argos Asian Wildlife Tracking Workshop in Incheon, Korea. To investigate…
Spotted seals, Sea of Japan

30.05.2017 2nd Argos Asian Workshop Shedding light on the life of spotted seals in the Sea of Japan

At the 2nd Argos Asian Wildlife Tracking Workshop in Incheon, Korea, Dr. Mari Kobayashi, Ph.D, will present her work “Estimation on area of use and feeding patterns by Argos satellite-tracking of the spotted seals in the Sea of Japan”. Understanding spotted seal spatial use In this fascinating study, Dr. Kobayashi and her…
black headed gull Argos

24.05.2017 2nd Argos Asian Workshop Mapping Asian bird migration routes with Argos

  Black headed gulls migration from China. Argos tracking data courtesy of Heqi Wu. At the 2nd Argos Asian Wildlife Tracking Workshop in Incheon, Korea, Dr. Heqi Wu, a Chinese ornithologist, will present “An introduction on Sino-BON birds CAS and major works.”  He will introduce a monitoring network…
swans with Argos tag

24.05.2017 2nd Argos Asian Workshop The magical journey of Japanese Swans revealed with Argos

Lake Izunuma-Uchinuma is located in northern Japan, covering an area of 491ha. The lake is renowned internationally for its high biodiversity. It is a Ramsar site, protected by an international treaty for the conservation and sustainable use of wetlands, and it is one of the major wintering sites for…
How leatherback turtles will react to climate change

24.05.2017 2nd Argos Asian Workshop Argos reveals migration and dive behavior of sea turtles in the North Pacific

Argos satellite telemetry studies over the last two decades revealed that sea turtles undertake wide-range migration, and often trans-oceanic migration. Moreover, advanced Argos PTT (Platform Transmitter Terminal) provide fine-scale information of dive behavior, and the fact that they are capable of diving into deep waters. At the…
raptor oriental honey buzzard argos

24.05.2017 2nd Argos Asian Workshop Argos to study the migration of raptors in East Asia: Present state and future

Dr. Hiroyoshi Higuchi, Research and Education Center for Natural Sciences, Keio University, and his colleagues have satellite-tracked the migration of raptors for about 20 years. The species include Grey-faced Buzzards, Oriental Honey Buzzards, Common Buzzards and Rough-legged Buzzards. At the 2nd Argos…
Glider 416

12.01.2017 Oceanography and meteorological applications Finding CSIRO’s Glider 416 following a shark attack

On January 21st 2016, Rob Gregor (CSIRO) and his team from the Australian Institute of Marine Science (AIMS) deployed the Slocum glider 416 (Amy) as part of the eReefs project to observe the water around the northern Great Barrier Reef. The plan was for the deployment to start in Palm Passage and sample to include the areas of routine ship borne CTD measurements.