Hiroshima University Syllabus

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Academic Year 2024Year School/Graduate School School of Applied Biological Science
Lecture Code L2021005 Subject Classification Specialized Education
Subject Name 水圏生態学II
Subject Name
Subject Name in
Hydrospheric EcologyII
サイトウ ヒデトシ
Campus Higashi-Hiroshima Semester/Term 3rd-Year,  First Semester,  1Term
Days, Periods, and Classrooms (1T) Thur1-4:ABS C302
Lesson Style Lecture Lesson Style
(More Details)
Mainly lecture, sometimes writing and discussion 
Credits 2.0 Class Hours/Week   Language of Instruction O : Others
Course Level 3 : Undergraduate High-Intermediate
Course Area(Area) 26 : Biological and Life Sciences
Course Area(Discipline) 01 : Agricultural Sciences
Eligible Students
Keywords benthos, classification, ecology, material circulation, biological indicator, food 
Special Subject for Teacher Education   Special Subject  
Class Status
within Educational
(Applicable only to targeted subjects for undergraduate students)
Criterion referenced
(Applicable only to targeted subjects for undergraduate students)
Integrative Hydrospheric Science Program
(Knowledge and Understanding)
・To comprehensively understand morphological, ecological, physiological, pathological, biochemical, and genetic features of various creatures in hydrosphere.
・Understanding on relation between form and ecology of hydrosphere organisms and hydrosphere environment
Class Objectives
/Class Outline
To understand the importance of roles of aquatic organisms, particularly benthos in various functions of aquatic ecosystems by researching feeding, reproductive and community ecology of benthos. 
Class Schedule lesson1 What is benthos?

lesson2 Classification
lesson3 Phylogeny, evolution, speciation
lesson4 Life cycle (marine benthos)
lesson5 Life cycle (freshwater benthos)
lesson6 Community ecology (resource partitioning)
lesson7 Community ecology (ecological succession)
lesson8 Material circulation and benthos (role in circulation)
lesson9 Material circulation and benthos (purification ability of water)
lesson10 Environment and benthos (environmental adaptation and indicator)
lesson11 Environment and benthos (effect of environmental modification on benthic life)
lesson12 Benthos as food resource (food chain)
lesson13 Benthos as food resource (food selection and foraging strategy)
lesson14 Benthos as food resource (food partitioning)
lesson15 Summary

To explain taxonomy, life cycle and roles in community and food web and to mention roles in material circulation and usefulness as environmental indicators. 
Mizuno, N. &Gose, K. River ecology, Tsukiji Shokan
Kondo, S., Hirabayashi, K. and others, The world of chironomids,   
Mawatari, S., The logic of animal classification, University of Tokyo
PC or AV used in
(More Details) print, powerpoint 
Learning techniques to be incorporated  
Suggestions on
Preparation and
After lesson 1 To make an overal image of benthos.
After lesson 2 To classify benthos from various viewpoints.
After lesson 3 To understand various methods of phylogenetic analysis and their merits and demerits and to make a consept of speciation.
After lesson 4 To understand some features of life cycles of marine benthos and the meaning in survival strategy.
After lesson 5 To understand some features of life cycles of freshwater benthos and the meaning in survival strategy.
After lesson 6 To study various examples of resource partitioning.
After lesson 7 To comprehend ecological succession and the environmental effect on succession.
After lesson 8 To recognize the roles of benthos in material circulation.
After lesson 9 To understand the ability of benthos in water purification and to recognize the meaning of environmental preservation.
After lesson 10 To know incredible adaptability of some benthos to environment and to recognize the importance as environmental indicators.
After lesson 11 To recognize the effects of environmental modification on benthic community.
After lesson 12 To study the important roles of benthos in food web.
After lesson 13 To understand selection and strategy of fish foraging on the basis of laboratory experiments and field research.
After lesson 14 To understand food partitioning phenomena in complex fish community and the ecological meaning.
After lesson 15 To review the points in all the lessons. 
Grading Method Attitude toward class participation and test 
Practical Experience  
Summary of Practical Experience and Class Contents based on it  
Please fill in the class improvement questionnaire which is carried out on all classes.
Instructors will reflect on your feedback and utilize the information for improving their teaching. 
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