Universität Wien

300169 UE Trophic ecology of aquatic ecosystems (2021W)

10.00 ECTS (6.00 SWS), SPL 30 - Biologie
Continuous assessment of course work


Note: The time of your registration within the registration period has no effect on the allocation of places (no first come, first served).


max. 12 participants
Language: English


Classes (iCal) - next class is marked with N

The course will take place at the WasserCluster in Lunz (http://www.wasserkluster-lunz.ac.at/) from October 13 to October 22.

Monday 04.10. 11:30 - 13:00 Seminarraum 1.7, Biologie Djerassiplatz 1, 1.010, Ebene 1


Aims, contents and method of the course

We will investigate the functioning of a lake ecosystem based on dietary organic matter and energy pathways, from primary producers to consumers of different trophic levels. In detail, we will analyze origin, dietary quality and –energy content of potential food sources of different fish species obtained from the lake. We will investigate feeding ecology of fishes, patterns of food selectivity and their relevance for consumption and production, as well as the consequences on the food webs (i.e. bottom up vs. top down effects, trophic cascades, etc.). We will focus on different fish species, macro-zoobenthos, zooplankton and algae.
Methods: Qualitative and quantitative stomach and gut analyses of fishes, stable isotopes, C/N element analyses, lipids and fatty acid analyses, compound-specific stable isotopes, multivariate analysis, mixing models.

Assessment and permitted materials

seminar talk (20 %), Student activity (30 %), lab protocol (10 %), team report (40 %)

Minimum requirements and assessment criteria

All partial performances must be positive to finish the course. Passed with more than 50% positive overall performance.

Examination topics

Continuous assessment. You will learn how to plan and to conduct a field survey based on an empirical approach, you will conduct commonly used statistical procedures to analyze obtained data, which represents a prerequisite for the interpretation of the results. At the end of the course, you will discuss the results by means of a short presentation. In the more detailed written protocol you will include the research topic, applied methods, findings and your interpretations.

Reading list

will be provided via moodle

Association in the course directory

BOE 12, BZO 12, BBO 9, MEC-9, M-WZB, MZO 2

Last modified: Tu 24.01.2023 00:26