Selected interactions between phytoplankton, zooplankton and the microbial food web [Elektronische Ressource] : microcosm experiments in marine and limnic habitats / by Alexis Katechakis

Selected interactions between phytoplankton, zooplankton and the microbial food web: Microcosm experiments in marine and limnic habitats Dissertation zur Erlangung des Doktorgrades der Naturwissenschaften Dr. rer. nat. der Fakultät für Biologie der Ludwig-Maximilians-Universität München by Alexis Katechakis München 2005 Selected interactions between phytoplankton, zooplankton and the microbial food web: Microcosm experiments in marine and limnic habitats Dissertation zur Erlangung des Doktorgrades der Naturwissenschaften Dr. rer. nat. der Fakultät für Biologie der Ludwig-Maximilians-Universität München by Alexis Katechakis Eingereicht am: 24. November 2005 1. Gutachter: PD Dr. Herwig Stibor 2. Gutachter: Prof. Dr. Sebastian Diehl Tag der mündlichen Prüfung: 17. März 2006 A L'ANNA CONTENTS Summary / Key words …………………………………………………………………………………1 1. Introduction ……….……….………………………………………………………………………4 1.1. Thesis objectives, approach and outline……………………………………………………….5 1.2. The pelagic food web ………………………………………………………………………….7 1.3. Bottom-up vs. top-down control ……………………9 1.4. Natural vs. cultural enrichment ……………………………………………………10 2. Study backgrounds ………………………………………………………………………………11 2.1. Backgrounds Study A – Copepods, cladocerans, doliolids…………………………………..11 2.2. Backgrounds Study B – Mixotrophs …………………………………………………………13 3.