189 Pages
English

Biology of meso- and bathypelagic chaetognaths in the Southern Ocean [Elektronische Ressource] / Svenja Kruse

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Alfred-Wegener-Institut für Polar- und Meeresforschung Bremerhaven Universität Bremen BIOLOGY OF MESO- AND BATHYPELAGIC CHAETOGNATHS IN THE SOUTHERN OCEAN DISSERTATION zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften - Dr. rer. nat. - am Fachbereich Biologie/Chemie der Universität Bremen SVENJA KRUSE Oktober 2009 1. Gutachter: Prof. Dr. U. Bathmann 2. Gutachter: Prof. Dr. W. Hagen Fragen bleiben jung, Antworten altern rasch. (Kurt Marti) TABLE OF CONTENTS Summary 2 Zusamenfasung 41. General introduction 8 1.1 The Southern Ocean 8 1.2 Geographical and vertical distribution of chaetognaths 12 1.3 The biology of chaetognaths 14 2. Aims and outline of the thesis 20 3. List of publications 24 Publicaton I: 26Meso- and bathypelagic distribution and abundance of chaetognaths in the Atlantic sector of the Southern Ocean Publicaton I: 60Population structure and reproduction of Eukrohnia bathypelagica and Eukrohnia bathyantarctica in the Lazarev Sea, Southern Ocean Publication III: 82 Feeding ecology and energetics of the Antarctic chaetognaths Eukrohnia hamata, E. bathypelagica and E.

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Published 01 January 2009
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Language English
Document size 13 MB

Alfred-Wegener-Institut für Polar- und Meeresforschung Bremerhaven
Universität Bremen
BIOLOGY OF MESO- AND BATHYPELAGIC
CHAETOGNATHS
IN THE SOUTHERN OCEAN
DISSERTATION
zur Erlangung des akademischen Grades
eines Doktors der Naturwissenschaften
- Dr. rer. nat. -
am Fachbereich Biologie/Chemie der
Universität Bremen
SVENJA KRUSE
Oktober 2009 1. Gutachter: Prof. Dr. U. Bathmann
2. Gutachter: Prof. Dr. W. Hagen



Fragen bleiben jung,
Antworten altern rasch.
(Kurt Marti) TABLE OF CONTENTS
Summary 2
Zusamenfasung 4
1. General introduction 8
1.1 The Southern Ocean 8
1.2 Geographical and vertical distribution of chaetognaths 12
1.3 The biology of chaetognaths 14
2. Aims and outline of the thesis 20
3. List of publications 24
Publicaton I: 26
Meso- and bathypelagic distribution and abundance of chaetognaths in
the Atlantic sector of the Southern Ocean
Publicaton I: 60
Population structure and reproduction of Eukrohnia bathypelagica and
Eukrohnia bathyantarctica in the Lazarev Sea, Southern Ocean

Publication III: 82
Feeding ecology and energetics of the Antarctic chaetognaths
Eukrohnia hamata, E. bathypelagica and E. bathyantarctica
Publication IV: 112
The role of midwater chaetognaths in Southern Ocean pelagic energy flow
4. Synoptic discussion 130
4.1 Species identification and special features in chaetognaths 130
4.2 Chaetognath life history 134
4.3 Distribution patterns and adaptations to the environment 140
4.4 Estimated role of chaetognaths in the ecosystem 151
5. Conclusions and perspectives 154
6. References 158
Acknowledgements 170
Danksagung 172
Appendix 174