Rapid succession drives spring community dynamics of small protists at Helgoland Roads, North Sea


Contact
laura.kaese [ at ] awi.de

Abstract

The dynamics of diatoms and dinoflagellates have been monitored for many decades at the Helgoland Roads Long-Term Ecological Research site and are relatively well understood. In contrast, small-sized eukaryotic microbes and their community changes are still much more elusive, mainly due to their small size and uniform morphology, which makes them difficult to identify microscopically. By using next-generation sequencing, we wanted to shed light on the Helgoland planktonic community dynamics, including nano- and picoplankton, during a spring bloom. We took samples from March to May 2016 and sequenced the V4 region of the 18S rDNA. Our results showed that mixotrophic and heterotrophic taxa were more abundant than autotrophic diatoms. Dinoflagellates dominated the sequence assemblage, and several small-sized eukaryotic microbes like Haptophyta, Choanoflagellata, Marine Stramenopiles and Syndiniales were identified. A diverse background community including taxa from all size classes was present during the whole sampling period. Five phases with several communities were distinguished. The fastest changes in community composition took place in phase 3, while the communities from phases 1 to 5 were more similar to each other despite contrasting environmental conditions. Synergy effects of next-generation sequencing and traditional methods may be exploited in future long-term observations.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Research Networks
Peer revision
ISI/Scopus peer-reviewed
Publication Status
Published
Eprint ID
52758
DOI 10.1093/plankt/fbaa017

Cite as
Käse, L. , Kraberg, A. C. , Metfies, K. , Neuhaus, S. , Sprong, P. A. , Fuchs, B. M. , Boersma, M. and Wiltshire, K. H. (2020): Rapid succession drives spring community dynamics of small protists at Helgoland Roads, North Sea , Journal of Plankton Research, 42 (3), pp. 305-319 . doi: 10.1093/plankt/fbaa017


Download
[img]
Preview
PDF
fbaa017.pdf

Download (1MB) | Preview

Share


Citation

Research Platforms

Campaigns


Actions
Edit Item Edit Item