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Ecosystem engineering in intertidal sand by the lugworm Arenicola marina [Elektronische Ressource] / vorgelegt von Nils Volkenborn

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Ecosystem engineering in intertidal sand by the lugworm Arenicola marina Dissertation zur Erlangung eines Doktor der Naturwissenschaften -Dr. rer. nat.- Dem Fachbereich Biologie/Chemie der Uni Bremen vorgelegt von Nils Volkenborn im Oktober 2005 1. Gutachter: Herr Prof. Dr. Wolf Arntz 2. Gutachter: Herr Prof. Dr. Karsten Reise Intertidal sand bioturbated by lugworms (Arenicola marina) and by a backhoe to prepare the exclusion experiment in spring 2002. Contents SUMMARY 1 ZUSAMMENFASSUNG 4 Part 1: General introduction and discussion A INTRODUCTION 1. Biodiversity and ecosystem functioning 9 2. Ecosystem engineering in the marine benthos 11 3. Bioturbation and bioirrigation by the lugworm Arenicola marina 13 4. This thesis 15 4.1. Large-scale lugworm exclusion experiment 15 4.2. Thesis outline 18 B DISCUSSION 1. Ecosystem engineering in intertidal sand performed by lugworms 21 2. Effects of lugworms on sediment characteristics and biogeochemical cycling 24 3. Effects of lugworms on the benthic community 28 4. Large-scale lugworm exclosures: advantages and possible artefacts 31 5. Ecosystem engineering in the marine benthos 34 6. Implications and scope for further research 35 6.1. Effects of lugworms on biogeochemical processes and the microbial community 36 6.2.

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Published 01 January 2006
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Language English
Document size 4 MB