Werner Eugster: Catalogue data in Autumn Semester 2021 |
| Name | Prof. Dr. Werner Eugster |
| Department | Environmental Systems Science |
| Relationship | Adjunct Professor |
| Number | Title | ECTS | Hours | Lecturers | |||||||||||||||||
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| 751-0441-00L | Scientific Analysis and Presentation of Data  | 2 credits | 2G | W. Eugster | |||||||||||||||||
| Abstract | Students will get an introduction to the scientific work with data covering all steps from data import from Excel via statistical analyses to producing correct scientific graphical output. Exercises with the software R/RStudio will provide hands-on opportunities to get acquainted with data analysis and presentation in adequate graphs. Field data gathered with Prof. E. Frossard will be used. | ||||||||||||||||||||
| Learning objective | This lecture with exercises gives an introduction to the scientific work with data, starting with data acquisition and ending with statistical analyses as they are often required for a bachelor thesis (descriptive statistics, linear regression, simple analyses of variance etc.). Using open-source R/RStudio software will be the primary focus via a hands-on approach. An imporant aspect will be to learn which graphical representation of data are best suited for the task (how can data be presented clearly and still scientifically correct?) | ||||||||||||||||||||
| Content | Tentative Programme: - Introduction - Introduction to 'R' - Data import and graphical presentation - Preparation of own data from field course with Prof. E. Frossard / from 4th semester - Correct and problematic graphical data displays - Statistical distribution and confidence intervals - Statistical tests - Repetition and hands-on applications - Correlation analysis - Linear regressions - Analysis of Variance - Discussion of ANOVA results with Prof. E. Frossard Last week of semester: examination (Leistungskontrolle) | ||||||||||||||||||||
| Lecture notes | Mainly German (with some English passages from text books) | ||||||||||||||||||||
| Prerequisites / Notice | Theoretical background in ensemble statistics from the mandatory course in the 4th semester; students should have cleared the examination of that fundamental course to be able to follow | ||||||||||||||||||||
| 751-3801-00L | Experimental Design and Applied Statistics in Agroecosystem Science | 3 credits | 2G | A. Hund, W. Eugster, C. Grieder, R. Kölliker | |||||||||||||||||
| Abstract | Different experimental designs will be discussed and various statistical tools will be applied to research questions in agroecosystem sciences. Statistical methods range from simple analysis of variance to mixed-models and multivariate statistics. Surveys and manipulative field and laboratory experiments are addressed and students learn to analyse data using a hands-on approach. | ||||||||||||||||||||
| Learning objective | Students will know various statistical analyses and their application to science problems in their study area as well as a wide range of experimental design options used in environmental and agricultural sciences. They will practice to use statistical software packages (R), understand pros and cons of various designs and statistics, and be able to statistically evaluate their own results as well as those of published studies. | ||||||||||||||||||||
| Content | The course program uses a learning-by-doing approach ("hands-on minds-on"). The topics are introduced as short lectures, but most of the work is done on the computer using different packages of R – a software for statistical computing and graphics. In addition to contact hours exercises must be finalized and handed in for grading. The credit points will be given based on successful assessments of selected exercises. The tentative schedule contains the following topics: Introduction to experimental design and applied statistics in R Data handling and data exploration with tidyverse Designs of field and growth chamber experiments theory Design creation with DiGGer Fitting linear mixed-effects models with lme4 Marginal means estimation and post-hoc tests with emmeans Nonlinear regression fits Statistical learning techniques Principle component analysis, canonical correpondence analysis (CCA), cluster analysis Random forest This course does not provide the mathematical background that students are expected to bring along when signing up to this course. Alternatively, students can consider some aspects of this course as a first exposure to solutions in experimental design and applied statistics and then deepen their understanding in follow-up statistical courses. | ||||||||||||||||||||
| Lecture notes | Handouts will be available (in English) | ||||||||||||||||||||
| Literature | A selection of suggested additional literature, especially for German speaking students will be presented in the introductory lecture. | ||||||||||||||||||||
| Prerequisites / Notice | This course is based on the course Mathematik IV: Statistik, passed in the 2nd year and the Bachelor's course "Wissenschaftliche Datenauswertung und Datenpräsentation" (751-0441-00L) | ||||||||||||||||||||
| Competencies |
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| 751-5101-00L | Biogeochemistry and Sustainable Management Does not take place this semester. | 2 credits | 2G | W. Eugster, V. Klaus | |||||||||||||||||
| Abstract | This course focuses on the interactions between ecology, biogeochemistry and management of agro- and forest ecosystems, thus, coupled human-environmental systems. Students learn how human impacts on ecosystems via management or global change are mainly driven by effects on biogeochemical cycles and thus ecosystem functioning, but also about feedback mechanisms of terrestrial ecosystems. | ||||||||||||||||||||
| Learning objective | Students will analyse and understand the complex and interacting processes of ecology, biogeochemistry and management of agroecosystems, be able to analyze large meteorological and flux data sets, and evaluate the impacts of weather events and management practices, based on real-life data. Moreover, students will be able to coordinate and work successfully in small (interdisciplinary) teams. | ||||||||||||||||||||
| Content | Agroecosystems play a major role in all landscapes, either for production purposes, ecological areas or for recreation. The human impact of any management on the environment is mainly driven by effects on biogeochemical cycles. Effects of global change impacts will also act via biogeochemistry at the soil-biosphere-atmosphere-interface. Thus, ecosystem functioning, i.e., the interactions between ecology, biogeochemistry and management of terrestrial systems, is the science topic for this course. Students will gain profound knowledge about biogeochemical cycles and greenhouse gas fluxes in managed grassland and/or cropland ecosystems. Responses of agroecosystems to the environment, i.e., to climate and weather events, but also to management will be studied. Different meteorological and greenhouse gas flux data will be analysed (using R) and assessed in terms of production, greenhouse gas budgets and carbon sequestration. Thus, students will learn about the complex interactions of a coupled human-environmental system. Students will work with real-life data from the long-term measurement network Swiss FluxNet. Data from the intensively managed grassland site Chamau will be used to investigate the biosphere-atmosphere exchange of CO2, H2O, N2O and CH4. Functional relationships will be identified, greenhouse gas budgets will be calculated for different time periods and in relation to management over the course of a year. | ||||||||||||||||||||
| Lecture notes | Handouts will be available on the webpage of the course. | ||||||||||||||||||||
| Literature | Will be discussed in class. | ||||||||||||||||||||
| Prerequisites / Notice | Prerequisites: Attendance of introductory courses in plant ecophysiology, ecology, and grassland or forest sciences. Knowledge of data analyses in R and statistics. Course will be taught in English. | ||||||||||||||||||||