KOSMOS Finland 2012 mesocosm study: Phytoplankton biomass and pigment concentration, Nitrogen cycle parameters ...

Nitrogen fixation by filamentous cyanobacteria supplies significant amounts of new nitrogen (N) to the Baltic Sea. This balances N loss processes such as denitrification and anammox, and forms an important N source supporting primary and secondary production in N-limited post-spring bloom plankton c...

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Bibliographic Details
Main Authors: Paul, Allanah Joy, Stuhr, Annegret, Boxhammer, Tim
Format: Dataset
Language:English
Published: PANGAEA 2018
Subjects:
DATE/TIME
Day of experiment
Mesocosm label
Phase
Chaetoceros sp., biomass as carbon
Skeletonema marinoi
Aphanizomenon flos-aquae, biomass as carbon
Aphanizophyll
δ15N
Nitrogen fixation rate
Mesocosm experiment
Biological Impacts of Ocean Acidification BIOACID
Ocean acidification
Online Access:https://dx.doi.org/10.1594/pangaea.889312
https://doi.pangaea.de/10.1594/PANGAEA.889312
Description
Summary:Nitrogen fixation by filamentous cyanobacteria supplies significant amounts of new nitrogen (N) to the Baltic Sea. This balances N loss processes such as denitrification and anammox, and forms an important N source supporting primary and secondary production in N-limited post-spring bloom plankton communities. Laboratory studies suggest that filamentous diazotrophic cyanobacteria growth and N2-fixation rates are sensitive to ocean acidification, with potential implications for new N supply to the Baltic Sea. In this study, our aim was to assess the effect of ocean acidification on diazotroph growth and activity as well as the contribution of diazotrophically fixed N to N supply in a natural plankton assemblage. We enclosed a natural plankton community in a summer season in the Baltic Sea near the entrance to the Gulf of Finland in six large-scale mesocosms (volume ∼ 55m3) and manipulated fCO2 over a range relevant for projected ocean acidification by the end of this century (average treatment fCO2: ... : Supplement to: Paul, Allanah Joy; Achterberg, Eric Pieter; Bach, Lennart Thomas; Boxhammer, Tim; Czerny, Jan; Haunost, Mathias; Schulz, Kai Georg; Stuhr, Annegret; Riebesell, Ulf (2016): No observed effect of ocean acidification on nitrogen biogeochemistry in a summer Baltic Sea plankton community. Biogeosciences, 13(13), 3901-3913 ...

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