Graduate School of Environmental Science, Hokkaido University

Dr. Liu, who joined our faculty this summer, will present her research at the Environmental Earth Science seminar.

Date and time: 16:45-18:00 on October 17th (Mon) 2022

Place: D201 in GSES

Speaker: Dr. LIU Tong (本研究院・統合環境科学部門・環境適応科学分野・助教) 

Assistant Professor, Group of Environmental Adaptation Science, 
Section of Integrated Environmental Science, 
Faculty of Environmental Earth Science, Hokkaido University

Title: Occurrence and risk assessment of emerging micropollutants 
in a water diversion project (分水嶺事業における新興微量汚染物質の発生とリスク評価)

Language: English

Chair: OKINO Tatsufumi（統合環境科学部門）

要旨(Abstract) 

Abstract: Water diversion is increasingly utilized for water supply, flood control, irrigation, and water quality improvement in many water bodies globally. Micropollutants such as perfluoroalkyl acids (PFAAs) can be transported via dual-source water diversion projects during water diversion and flood discharge, which may negatively impact both receiving water bodies. However, the sources, spatiotemporal variations, and fluxes of PFAAs under water diversion projects remain unclear. Here, we quantified 18 PFAA compounds in the surface water of the Wangyu River in eastern China, which transfers water between the Yangtze River and Taihu Lake during water diversion (January 2020) and flooding periods (July 2020) for the following objectives: (1) to investigate the occurrence and sources of signature PFAAs in both flow directions in this highly urbanized and populated region; (2) to characterize the relative contribution of individual PFAAs and explore how water diversion and flooding impacts the PFAA pollution; and (3) to estimate the flux of PFAAs (kg month-1) diverted into or discharged from Taihu Lake via the Wangyu River, to provide a reference value for the ecological safety of a dual-source water diversion project and its receiving water bodies.

Contact: TOYODA Kazuhiro (kazuhiro@ees.hokudai.ac.jp) （統合環境科学部門）

We are happy to announce that GSES Homecoming Day 2022 will be held virtually on Thursday, September 22^nd.  Zoom invitation link will be sent to all GSES students, faculty and staff members on September 16^th.  Please check the event schedule below and join us.

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Hokkaido University Homecoming Day is scheduled for September 24^th.  Please visit https://www.hokudai.ac.jp/home2022/index.html (Japanese only) for more information.

　　　　　　　　　　　　　　ANNOUNCEMENT OF FACULTY POSITION
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　Prof. Youichi Tanimoto, Dean

　　The Faculty of Environmental Earth Science, Hokkaido University seeks qualified
applicants for the following vacancy.

1. Job title
　　Professor or Associate Professor, full time (tenured) (number of vacancy: 1)

2. Institution
　　Group of Ecological Genetics, Section of Environmental Biology, Faculty of
　　Environmental Earth Science

3. Teaching duties
　　Course in Ecological Genetics, Division of Biosphere Science, Graduate School of
　　Environmental Science

4. Research field
　　Ecological genetics (including related fields such as molecular ecology and chemical
　　ecology) of plants or related organisms. The successful applicant is expected to
　　conduct research based on fieldwork.

5. Qualifications
　　The applicant must have a doctoral degree and excellent achievements in the relevant
　　research fields. The applicant also must be enthusiastic about education of
　　undergraduate and graduate students.

6. Probationary period
　　Three months

7. Working hours
　　Discretionary working system in the type of professional work. *The working hours
　　per day are deemed as 7 hours and 45 minutes.

8. Salary
　　The salary will be determined in accordance with National University Corporation
　　Hokkaido University salary rules for faculty subject to annual salary system.

9. Social insurance
　　Employees’ Pension Insurance (Kousei Nenkin), MEXT Mutual Aid Association
　　Health Insurance, Employment Insurance, and Industrial Accident Compensation
　　Insurance

10. Employer
　　Hokkaido University

11. Measures to prevent second-hand smoke
　　No smoking on the premises except in specified outdoor smoking areas

12. Required application documents (in hard copy in A4 or Letter size except (7))
　　(1) Curriculum Vitae and Web of Science ResearcherID if available
　　(2) Lists of scientific publications (peer reviewed original papers and others should
　　be separated) and research grants obtained
　　(3) Copies of representative papers (5 articles)
　　(4) Summary of past research (approx. 1,000 words) and educational and social
　　contributions (approx. 600 words)
　　(5) Future plan for research (approx. 1,000 words) and educational and social
　　contributions (approx. 600 words)
　　(6) Names with contact information of two references
　　(7) A storage medium (CD, DVD, or USB flash drive) containing above documents
　　(1-6) in PDF files (each in a separate file)

13. Deadline for receipt
　　October 21, 2022 (Japan Standard Time. Closing date must be strictly observed.)

14. Expected date of appointment
　　April 1, 2023, or the earliest possible date thereafter

Job starting date:
　　　The earliest day of convenience after or on the day of April 1, 2023.

15. Address for application and inquiry
　　Prof. Shin-ichiro Aiba
　　Head, Section of Environmental Biology
　　Faculty of Environmental Earth Science, Hokkaido University
　　N10W5, Kita-ku, Sapporo 060-0810, Japan
　　E-mail: aiba@ees.hokudai.ac.jp
　　* The application documents should be sent to the above address by registered post
　　mail (Letter Pack Plus or recorded delivery in Japan and EMS from overseas). Please
　　mark "CV Enclosed" in red on the envelope. Submitted documents will not be
　　returned but carefully discarded after the review process.

16. Notes
　　The successful applicant will be asked to teach undergraduate students in Japanese
　　and English. Hokkaido University is committed to actively promoting education and
　　research activities through diverse human resources. Additionally, the university
　　actively supports balancing education and research activities with daily life. Refer to
　　the following webpage for the details:
　　https://www.dei.hokudai.ac.jp/en/
　　Information about our organization can be found at:
　　https://www.ees.hokudai.ac.jp/modules/top/kousei.html?easiestml_lang=en
　　https://noah.ees.hokudai.ac.jp/bio_en/
　　We will not respond to inquiries about the selection process, but shortlisted
　　applicants will be notified of the interview schedule.

EES seminar（旧：研究院アワー）のご案内

久しぶりにEESセミナーを企画しました。興味をもたれた方はどなたでも気軽にご参加ください。（わかりやすく面白い話になると思います。）

2022年7月25日（月）16:30-17:30
Place: 環境科学院D101
Speaker: 入野智久 (Tomohisa Irino)
地球圏科学部門・環境変動解析学分野・准教授 
Associate Professor, Faculty of Environmental Earth Science, Hokkaido University

Title: 日本海堆積物に記録された過去の東アジア冬モンスーン変動 
(Reconstruction of east Asian winter monsoon in the past using sediment
archives in the Japan Sea)
Language: Japanese
Chair: 堀之内武（地球圏科学部門）

要旨

東アジアの気候は、夏の多雨と冬の厳寒で特徴づけられ、それぞれ東アジア夏モンスーン、冬モンスーンと呼ばれている。夏モンスーン期には、揚子江の流出に伴って塩分が低く栄養塩に富んだ東シナ海表層水が対馬海峡を通して日本海に流入し、日本海表層の成層と生物生産を維持している。また冬モンスーンによる日本海表層水の冷却は、海氷の生産と表層水の中深層への沈み込みによる換気をもたらしている。一方、日本海の海底堆積物への有機物の埋没フラックスは、生物生産と底層水酸化還元度に依存した有機物の分解とに制御されるので、夏モンスーンによる栄養塩に富む東シナ海沿岸水の日本海への張り出しと、冬モンスーンによる底層水の換気の程度のバランスで決まると考えられる。2013年に行われた統合深海掘削計画第346次調査航海（IODP Exp. 346）では、日本海の中で330 mから 3429 mにいたる様々な水深の7地点から連続な堆積物が掘削された。水深の最も浅いU1427地点を除くU1422-U1426およびU1430地点の堆積相は、千年スケールで繰り返す明暗互層をなす半遠洋性堆積物で、それらの明暗パターンは同時間面として広く対比でき、どのサイトの年代モデルも確立している。また日本海堆積物の明度は、有機炭素（TOC）含有量と強く逆相関することが分かっているので、堆積物写真、堆積物全体のガンマ線吸収率（GRA）からそれぞれ算出される明度、乾燥かさ密度を用いることで、各地点各時代のTOCフラックスを計算できる。そこで過去における冬モンスーンによる日本海中深層の換気パターンを復元するために、TOCフラックスの深度分布の時代変化を利用し、過去100万年間にわたる数万年スケールでの冬モンスーン変動の評価を試みる。