Function Assessment of Coastal Ecosystem Based on Phytoplankton Community Structure

PhD defence, Wedenesday 12 September 2018, Lumi Haraguchi.

2018.09.12 | Trine Berndt Turtiainen Scheelke

Lumi Haraguchi

Lumi has studied the structure and dynamics of protist plankton in Roskilde Fjord. Protist plankton includes microscopic single cell organisms that form the basis of the food chain in aquatic ecosystems and are therefore important for the global cycle of matter and nutrients. In her PhD project, Lumi studied how protist plankton responded to environmental changes across time scales (day-month-year) and how these responses affect the carbon and nutrient cycling. The research findings contribute to the understanding of the protist plankton dynamics in nutrient rich coastal ecosystems across time scales, including the importance of various nutritional forms such as autotrophy, heterotrophy and mixotrophy. The project also emphasizes that other water column's variables, such as grazers and dissolved organic matter, are important and highly interactive with the primary producing protist plankton

The PhD degree was completed at the Institute for Bioscience, Science and Technology, Aarhus University.

This résumé was prepared by the PhD student.

Time: Wedeneday 12 September 2018 at 13.00
Place: Building 885 (Pavilion), room P1.16, Department of Bioscience, Aarhus University, Frederiksborgvej 399, 4000 Roskilde
Title of PhD thesis: Function assessment of coastal ecosystem based on phytoplankton community structure
Contact information: Lumi Haraguchi, e-mail:, tel.: +45 6022-9497
Members of the assessment committee:
Associate Professor Luis Felipe Artigas, Laboratoire d’Océanologie et Géosciences, Université du Littoral du Côte d’Opale, France
Senior Researcher Kalle Olli, Department of Botany, University of Tartu, Estonia
Senior Researcher Morten Frederiksen (chair), Department of Bioscience, Aarhus University
Main supervisor:
Professor Jacob Carstensen, Department of Bioscience, Aarhus University
Senior Researcher Hans H. Jakobsen, Department of Bioscience, Aarhus University
Associate Professor Nina Lundholm, Natural History Museum of Denmark, Copenhagen University
Language: The PhD dissertation will be defended in English

The defence is public.
The PhD thesis is available for reading at the Graduate School of Science and Technology/GSST,
Ny Munkegade 120, building 1520, rooms 128-134, 8000 Aarhus C.

PhD defence
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Revised 21.09.2018