最新エントリー

[Press Release] The function of appendage patterning genes in mandible development of the sexually dimorphic stag beetle

An international research group that consists of Assoc. Prof. Toru Miura, his lab’s former and present graduate students, and researchers of Nagoya Univ., Washington State Univ., and the Univ. of Montana-Missoula analyzed developmental functions of limb-patterning genes in the sexually dimorphic stag beetle. They found that the dachshund expression is required for enlargement of male stag beetle mandibles. The corresponding author, Assist. Prof. Hiroki Gotoh of Nagoya Univ. is a researcher who completed his Ph. D. work in our graduate school. He is also a winner of the Matsuno Environmental Science Prize of this academic year.

This research outcome is published in Developmental Biology, an international academic journal on developmental biology.

Please visit links below to view the press release (Japanese version only).
Research Press Release (PDF)

[Press Release] Climatic instability over the past 720,000 years revealed by Antarctic ice cores and climate modeling

An international research group that consists of 64 researchers of 31 organizations revealed state dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling. Assoc. Prof. Masakazu Yoshimori (Faculty of Env. Earth Sci.), Prof. Ralf Greve, and Assist. Prof. Yoshinori Iizuka (Institute of Low Temp. Sci.) of our graduate school have taken part in the research team. This research outcome is published in Science Advances, an AAAS’ open access online journal.

Please visit links below to view the press release.
Research Press Release (PDF)

[Press Release] Promiscuous lamprey found to conduct "sham matings"

Chitose Yamazaki, a Ph.D. student of the Division of Biosphere Science, and Assoc. Prof. Itsuro Koizumi revealed that the nonparasitic lamprey Lethenteron kessleri female mates repeatedly without releasing eggs, in a behavior termed “sham mating,” suggesting the possibility that females choose their mates while engaged in promiscuous mating habits. This research outcome is published in Journal of Ethology, an academic journal of Japan Ethological Society.

Please visit links below to view the press release.
Research Press Release (PDF)

Hokkaido University President's Awards for the academic year 2016


These following 4 faculty members of Graduate School of Environmental Science were recognized for Hokkaido University President's Awards for Research Excellence and for Teaching Excellence for the academic year 2016.

President Award for Research Excellence

Associate Professor Toru MIURA, Course in Ecological Genetics, Division of Biosphere Science (Faculty of Environmental Earth Science)
Associate Professor Jun NISHIOKA, Course in Geochemistry, Division of Earth System Science (Institute of Low Temperature Science)

President Award for Education Excellence

Professor Koji SUZUKI, Course in Geochemistry, Division of Earth System Science (Faculty of Environmental Earth Science)
Associate Professor Masahiko FUJII, Course in Human and Ecological Systems, Division of Environmental Science Development (Faculty of Environmental Earth Science)

The International Priority Graduate Programs (IPGP) seminar was held

Our graduate school has conducted the International Priority Graduate Programs (IGBP) supported by the MEXT (Ministry of Education, Culture, Sports, Science and Technology, Japan) since 2015. This program provides excellent foreign students with a good opportunity to learn and research environmental sciences in Japan, as well as with a scholarship and other supports. To date, a total of 12 graduate students were enrolled at master's or doctoral courses of our graduate school through this program (including the Top Global University Project). On December 27, the IGBP seminar, in which second-year graduate students present their research progresses, was held at our graduate school. The graduate students and faculty members enjoyed a lively discussion.



[Press Release] Immigrating into a once-dried stream in winter: implications for river management for fishes

A research team of Assoc. Prof. Itsuro Koizumi and his graduate students (Division of Biosphere Science) revealed that, in winter, more than 10,000 juvenile fishes that include species not only with high swimming ability (Japanese dace and non-native rainbow trout) but also with low swimming ability (Siberian stone loach) immigrated to a small stream that had once dried up in summer. This result suggests that apparently negligible stream may provide critical overwintering habitats for some fishes. This research outcome is published in Ichthyological Research, an academic journal of the Ichthyological Society of Japan.

Please visit links below to view the press release (Japanese version only).
Research Press Release (PDF)

[Press Release] Physicochemical properties of bottom ice from Dome Fuji, inland East Antarctica

A research team led by Assist. Prof. Yoshinori Iizuka (Division of Earth System Science) and researchers of Kitami Institute of Technology and the National Institute of Polar Research revealed physicochemical properties of bottom ice from Dome Fuji, inland East Antarctica. This research outcome was published in Journal of Geophysical Research: Earth Surface (Volume 121, Issue 7), and this paper was also selected as the cover image for the issue of the journal.

Please visit links below to view the press release (Japanese version only).
Research Press Release (PDF)

[Press Release] The house shrews’ intraspecific phylogeny suggesting a history of human activities

The house shrews, Suncus murinus-S. montanus species complex, are tiny mammals that often live in a human’s house, and thus their distributions are considered to be closely associated with a history of human activities. An international team of eight countries’ researchers that include Assist. Prof. Satoshi D. Ohdachi and Prof. Hitoshi Suzuki (Division of Biosphere Science) analyzed a mitochondrial DNA region of the house shrews captured from east African coasts to Japan, and revealed the shrews’ intraspecific phylogeny. Results from a phylogenetic tree suggest that the present distribution of the house shrews is due to past human activities such as migration and economic exchange. This research outcome is published in Mammal Study, an academic journal of the Mammal Society of Japan.

Please visit links below to view the press release (Japanese version only).
Research Press Release (PDF)

Graduate School of Environmental Sceince, Hokkaido University