(Upload on April 8 2024) [ 日本語 | English ]

Hokkaido University Short-Term Exchange Program (HUSTEP)
Introduction to Environmental Earth Science

Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

[ Class | My turn ]


The guidence is held in D103-GSES at 14:45 on April 8 2024.

Related pages [ Flora list | Back issues ]

Introduction to Environmental Earth Science

I am the instructor in charge this year. If you have any queries, please contact me.

Syllabus (2024)

  • Shiro Tsuyuzaki:
  • Sohiko Kameyama: skameyama (at)
  • Takashi Hayakawa: hayatak (at)
  • Kyoko Miwa: miwakyoko (at)
  • Toshikazu Kawaguchi: t_kawa (at)
Former instructors: Kazuhiro Toyoda, Tatsufumi Okino, Masaaki Kurasaki, Histoshi Suzuki
Course Category

Course offered by Graduate School of Environmental Science
Semester/Quarter: 1st Semester
Course Format: Lecture (+ small discussion, field trip, etc.)
Level: 1000-3000 (everybody is welcome)
Credit: 2

environments, natural sciences
Course objectives
The course will address five issues in environmental earth sciences:
1) global warming and ocean ecosystems, 2) environmental changes and animal diversities, 3) plants and plant ecosystems in Japan, 4) environmental pollution and remediation, and 5) nanotechnology for environmental sciences
The major objective of this course is to engage students in interdisciplinary discourse by addressing each of these issues.
Course goals
Grasping issues in environmental earth science with various spatial scales, and examining the interdisciplinary discourse by addressing each of the challenges.
Course outline
  1. Introduction (Guidance)(Tsuyuzaki)
  2. Earth system and global warming (Kameyama)
  3. The roles of the oceans and carbon cycles (Kameyama)
  4. Marine feedback systems on global warming (Kameyama)
  5. Biodiversity, biogeography, and phylogeny of mammals in the postgenomic era (Hayakawa)
  6. In-situ and ex-situ conservation of threatened mammals with extinction (Hayakawa)
  7. Field DNA: From ecology to genomics (Hayakawa)
  8. Strolling across the campus to see the ecosystems (flexible depending on the weather) (Tsuyuzaki)
  9. Temporal and spatial patterns on ecosystems in Japan with reference to global warming (Tsuyuzaki)
  10. Plant science for sustainable food production (Miwa)
  11. Pollution by heavy metals and food safety (Miwa)
  12. Development of plants tolerant to mineral nutrient stress (Miwa)
  13. Nanotechnology for environmental science (Kawaguchi)
  14. Biosensor for medical diagnosis and food analysis (Kawaguchi)
  15. Gas sensor for environmental monitoring (Kawaguchi)
Grading Policy

Activities in class participation (40%) + essay questions (30%) + short exam (30%)


The handout will be provided and references are introduced in each lecture.

Class Time, Dates and Location

14:45-16:15, Monday, D103-GSES

Section: Plants and Plant communities in Japan

April 8 2024

Map What is environmental science?
Climate in Japan: temperature and precipitation
Sakura front (cherry blossom front)

Equation for predicting the date of cherry blossom
Changes in date of cherry blossom may change animal behavior

Vegetation map in the world (and self-introduction)
Question: find out the common characteristics of the five species

Trillium kamtschaticum Pall. (Liliaceae)

= Emblem of Hokkaido University

Corydalis ambigua Cham. et Schlecht. (Papaveraceae)
Anemone raddeana Regel (Ranunculaceae)
Scopolia japonica Maxim. (Solanaceae)
Gagea lutea (L.) Ker-Gawl. (Liliaceae)

Vegetation map in Japan

Deciduous and evergreen forests

Spring ephemerals
Introduction of instructors
Supplements (for field trip)

June 10 2024

Field trip: see the flora list and map
Get gather this lecture room by 14:45
We go to a tiny field trip for watching plants in Hokkaido, if the weather is not so bad. (It was cloudy. No problem for the trip.)
Keep in mind
Prepare something you need, if you do not like to meet disasters, such as mosquito attack and drizzle.
During the trip, mention the seed dsipersal types of plants.
[ Field equipment ]

June 17 2024

Keywords Number of exotic species in Japan
Prediction of ecosystem changes derived by global warming
Seed dispersal
Relationship between seed dispersal types and succession
Migration pace on plant communities with reference to seed dispersal types
Dorso-ventral structure in Japan
Straight and dwarf forms of trees
Skislope vegetation

Procedure on skislope establishment
Problems (not only natural but also living problems)
Miscanthus sinensis: may be keystone species to restore forests on skislopes in Japan

Vertical distribution in Hokkaido
Mixed forest

Routes of plant immigration for 2 million years

Scale, frequency, and intensity
Intermediate hypothesis (or theory)
Look at the campus
Flood - disturbance-maintained plant communities
Thank you for joining!