Inorganic nitrogen in relationship with oxygen respiration and organic matter decomposition in sandy lowland streams [Elektronische Ressource] / Ramón Mena Obregón. Betreuer: Elisabeth Irmgard Meyer

Ramón Mena Obregón Inorganic nitrogen in relationship with oxygen respiration and organic matter decomposition in sandy lowland streams 2009 i Biologie Dissertationsthema Inorganic nitrogen in relationship with oxygen respiration and organic matter decomposition in sandy lowland streams Inaugural-Dissertation zur Erlangung des Doktorgrades der Naturwissenschaften im Fachbereich Biologie der Mathematisch-Naturwissenschaftlichen Fakultät der Westfälischen Wilhelms-Universität Münster vorgelegt von Ramón Mena Obregón aus Leticia, Kolumbien 2009 ii Dekanin/Dekan: Prof. Dr. Christian Klämbt Erste Gutachterin/Erster Gutachter: Prof. Dr. Elisabeth Imgard Meyer Zweite Gutachterin/Zweiter Gutachter: Prof. Dr. Norbert Hölzel Tag der mündlichen Prüfung(en): Tag der Promotion: 18.12.2009 iii Contents 1. Introduction 1 1.1 Effect of climatic variables on the inorganic nitrogen concentration in lowland streams 1 1.2 Inorganic nitrogen processing in lowland stream sediments: the nitrification process 2 1.3 Relationship between leaf-litter decomposition and nitrogen processing in a lowland stream 3 1.4 Oxygen production and respiration and the relation to light, inorganic nutrient, and discharge 4 2. Study site 5 3. Methodology 7 3.