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SISI: A new device for in situ incubations at the ocean surface
Carl von Ossietzky University of Oldenburg, Germany.ORCID iD: 0000-0002-2132-2709
Carl von Ossietzky University of Oldenburg, Germany;Leibniz-Institute for Baltic Sea Research Warnemuende (IOW), Germany.
Carl von Ossietzky University of Oldenburg, Germany.
2017 (English)In: Journal of Marine Science and Engineering, E-ISSN 2077-1312, Vol. 5, no 4, article id 46Article in journal (Refereed) Published
Abstract [en]

The sea-surface microlayer (SML) forms the uppermost boundary layer between atmosphere and ocean, and has distinctive physico-chemical and biological features compared to the underlying water. First findings on metabolic contributions of microorganisms to gas exchange processes across the SML raised the need for new in situ technologies to explore plankton-oxygen turnover in this special habitat. Here, we describe an inexpensive research tool, the Surface In Situ Incubator (SISI), which allows simultaneous incubations of the SML, and water samples from 1 m and 5 m, at the respective depths of origin. The SISI is deployed from a small boat, seaworthy up to 5 bft (Beaufort scale), and due to global positioning system (GPS) tracking, capable of drifting freely for hours or days. We tested the SISI by applying light/dark bottle incubations in the Baltic Sea and the tropical Pacific Ocean under various conditions to present first data on planktonic oxygen turnover rates within the SML, and two subsurface depths. The SISI offers the potential to study plankton-oxygen turnover within the SML under the natural influence of abiotic parameters, and hence, is a valuable tool to routinely monitor their physiological role in biogeochemical cycling and gas exchange processes at, and near, the sea surface.

Place, publisher, year, edition, pages
MDPI, 2017. Vol. 5, no 4, article id 46
National Category
Earth and Related Environmental Sciences
Research subject
Natural Science, Environmental Science
Identifiers
URN: urn:nbn:se:lnu:diva-101590DOI: 10.3390/jmse5040046ISI: 000423694200002Scopus ID: 2-s2.0-85032676324OAI: oai:DiVA.org:lnu-101590DiVA, id: diva2:1536884
Available from: 2021-03-12 Created: 2021-03-12 Last updated: 2025-02-07Bibliographically approved

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Rahlff, Janina

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