Limnology
Summary
Focus is on lakes, rivers and reservoirs as aquatic systems. Specific is the quantitative analyse (incl. exercises) of physical, biogeochemical and sedimentological processes. The goal is to understand the relevant processes for the water quality from an engineering perspective
Content
The themes comprise: themes
1. Water, nutrient, oxygen and salt balances (critical loads, one-box models, flux analysis)
2. Physical conditions of aquatic systems (density, stratification, currents, advection, diffusion, turbulence, heat and gas fluxes)
3. Mixing regimes (boundary layers, wind and convection, stratified turbulence, double diffusion)
4. Geochemical environment (photosynthesis, remineralisation, sedimentation, biogeochemical elemental cycling, particles, oxygen depletion, anaerobic processes, gas exchange)
5. Biological environment (photosynthesis, mineralisation, vertical distribution of substances, turbidity)
6. Remote sensing of inlands water
7. System analysis combining advection, diffusion, and reactions
8. Limnological research techniques
9. Environmental issues (eutrophication, pollution, water quality and WWT).
Keywords
Natural water resources, aquatic systems, production-mineralization cycle, biogeochemical cycling, water quality, air-water fluxes, turbulent mixing/fluxes
Learning Prerequisites
Required courses
BSc completed. Basic courses in hydrology and biogeochemistry, enjoy physics and mathematics; interest in system analysis and quantitative model/formulations
Recommended courses
System analysis, hydrology, aquatic geochemistry, aquatic biology, aquatic ecosystems
Important concepts to start the course
Numerical quantification of natural processes in stratified waters
Aquatic system analysis
Linking physical boundary conditions to quantitative flux estimates of matter (gases), momentum, and energy (heat, mechnaical)
Equation of motions
Learning Outcomes
By the end of the course, the student must be able to:
- Quantify primary production, system net production and net sedimentation based on nutrient inputs
- Structure models of lake-internal matter fluxes
- Predict vertical structures of water quality parameters, such as oxygen, nutrients, particles, turbidity
- Estimate sediment-to-water and air-water (and vice versa) dissolved substances and heat fluxes.
Teaching methods
3 hrs per week of instructions (basic knowledge and concepts) with in-class exercices, and 2 hrs per week of problem solving. Problem solving will be based on real data and practical questions. The goal is to learn the real lake- and reservoir-processes by addressing concrete quantitative questions which can be generalized. Motivation is given by scientific as well as practical engineering problems.
Expected student activities
One set of problems per week of homework, which will be digested and generalized in class. The students are expected not only to solve the problem as homework, but also to present and discuss the solutions in class.
Assessment methods
Feedback on the problem solving each week by the assistants.
50% from exercices during the semester
50% final oral exam
Supervision
| Assistants | Yes |
Resources
Bibliography
Weekly classnotes (about 200 pages in total) will be provided and a list of further readings
Notes/Handbook
Yes, every week
Moodle Link
Dans les plans d'études
- Semestre: Printemps
- Forme de l'examen: Oral (session d'été)
- Matière examinée: Limnology
- Cours: 2 Heure(s) hebdo x 14 semaines
- Exercices: 3 Heure(s) hebdo x 14 semaines
- Type: optionnel
- Semestre: Printemps
- Forme de l'examen: Oral (session d'été)
- Matière examinée: Limnology
- Cours: 2 Heure(s) hebdo x 14 semaines
- Exercices: 3 Heure(s) hebdo x 14 semaines
- Type: optionnel