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Forschungsseminar Systemwissenschaft
Sommersemester 2015
Das Seminar findet jeweils dienstags um 10:15 Uhr im Fachbereich Biologie/Chemie, Barbarastr. 11, Raum 35/E25 statt.
Das Forschungsseminar ist eine Lehrveranstaltung, an der MSc-Studenten/-innen teilnehmen und dort ihre Masterarbeit präsentieren. Im Rahmen des Seminars stellen zudem Mitarbeiter/-innen und Promovierende des USF aktuelle Forschungsarbeiten vor.
Research Seminar Systems Science
Summer Semester 2015
The Research Seminar takes place on Tuesdays at 10:15 AM in room 35/E25 (School of Biology/Chemistry, Barbarastr. 11).
Timetable
Date | Presenter | Title | Target audience * |
---|---|---|---|
05.05.2015 | Ursula Jehle & Volker LämmchenInstitute of Environmental Systems Research, Osnabrück | The institute's facebook initiative. | USF |
Prof. Dr. Horst MalchowInstitute of Environmental Systems Research, Osnabrück | Ingredients of spatiotemporal pattern formation in population dynamics. | USF | |
12.05.2015 | Prof. Dr. Eduardo LizUniversity of Vigo (ESP) | Logistic population models revisited. | USF |
26.05.2015 10:15 AM |
Hagen Daum | Integrierte Bewertung der Postwachstumsgesellschaft auf Basis des World3-Modells. (Master Thesis) | EnvEconom, REM |
11:00 AM | Julia LeventonLeuphana University Lüneburg | Socio-ecological systems and the common agricultural policy: Fragmentation and cooperation. | EnvEconom, REM |
02.06.2015 | Vanessa SchakauInstitute of Environmental Systems Research, Osnabrück | Infectious diseases in streams and rivers. | USF |
03.06.2015 93/E01 |
Dr. Marcus Schulz Celle |
Habilitation | |
02:30 PM | Scientific Presentation | Modellierung von Desertifikation - von konzeptionellen zu GIS-basierten Modellen. | USF |
04:00 PM | Probation Lecture | Grundlagen künstlicher neuronaler Netze - von Struktureinheiten zu Lernregeln. | USF |
09.06.2015 | Virgile BaudrotUniversité de Franche-Comté, Besançon (FRA) | The foraging behavior on trophically transmitted parasites. | ASW, TSW |
16.06.2015 | Marta Paliaga & Federico RoccatiUniversity of Torino (ITA) | Mathematical models of cooperation in prey and predators | ASW, TSW |
23.06.2015 | Philipp GorrisInstitute of Environmental Systems Research, Osnabrück | Developing a Graduate School at the IUSF - Introduction and Discussion | USF |
07.07.2015 | Dr. Caroline van BersDr. Joanne Vinke-de KruijfProf. Dr. Claudia Pahl-WostlInstitute of Environmental Systems Research, Osnabrück | Integrated Assessment - new perspectives for system science? Objectives and work of TIAS - The Integrated Assessment Society. | USF |
14.07.2015 | MSc theses | ||
10:15 AM | Jànos Sebestyén & Alexander Müller | Ökologische Nachhaltigkeit durch 'Nutzen statt Besitzen'? | EnvEconom, REM |
11:15 AM | Alexander Ahring | Modellansatz zur Berücksichtigung diffuser Substanzeinträge in Fließgewässer für das georeferenzierte Expositionsmodell GREAT-ER. | ASW, TSW |
* Target audiences
USF | general seminar for all members of the Institute |
specific seminars | |
ASW | Applied Systems Science |
EcolMod | Ecological Modelling |
EnvEconom | Environmental Economics |
EnvironPhys | Environmental Physics |
PUM | Projects in Environmental Systems Modelling |
REM | Resources Management |
TSW | Theoretical Systems Science |
Abstracts of selected talks
Eduardo Liz, Departamento de Matemática Aplicada II, Universidad de Vigo (España)
Logistic population models revisited
The logistic equation is one of the best known models of population growth. The original ODE proposed by Verhulst inspired other related models which exhibit rich dynamics; for example, the discrete logistic equation (quadratic map) became a paradigm of chaos after the seminal papers of May.
In this talk, we consider logistic models of exploited populations, focusing on the changes in the dynamics as the harvesting effort is increased. In this way, we discuss the global dynamics and highlight the link among different logistic equations usually employed in population models.
Virgile Baudrot, Antoine Perasso, Clémentine Fritsch and Francis Raoul
Laboratoire Chrono-environnement – UMR 6249, Université de Franche-Comté / CNRS, 16 route de Gray, 25000 Besançon (France)
The foraging behavior on trophically transmitted parasites
Small mammal populations display fluctuating patterns of densities in many ecosystems worldwide, leading their predators to adapt their foraging strategy (the multi-species functional response, MSFR). The predator-preys relationship is the route of transmission of a large number of zoonotic parasites with a complex life cycle (infecting different hosts during their life), like the cestode Echinococcus multilocularis (Em). This parasite is widely distributed in the Northern Hemisphere and is the causative agent of the emerging zoonosis alveolar echinococcosis in humans. The red fox Vulpes vulpes is a typical definitive host (DH) of Em, with, in eastern France, the rodents Microtus arvalis and Arvicola scherman as intermediate hosts. We described this eco-epidemiological system with ODEs and we computed the basic reproductive number R0, i.e., the number of secondary infections caused by a single primary infection into an otherwise susceptible population. We developed a general approach to model MSFR including accessibility to resources and switching of prey preference by predator. In this framework, we investigated the importance of MSFR and intermediate host diversity on the transmission patterns of Em. Few works have coupled adaptive predator-prey interactions with parasite transmissions, and the inclusion of switching behavior is a first attempt to feed hot topics linking adaptive foraging behavior and IHs diversity. We showed that switching of prey preference may have a dilution or amplification effect, that is a decrease, resp. increase, of the disease risk with an increase of IHs diversity.