Report ALKOR Cruise No.355 Redox‐dependent nutrient and nitrogen cycles at the benthic boundary layer of the eastern Gotland Basin.

Pfannkuche, Olaf (2010) Report ALKOR Cruise No.355 Redox‐dependent nutrient and nitrogen cycles at the benthic boundary layer of the eastern Gotland Basin. . IFM-GEOMAR, Kiel, Germany, 15 pp. DOI 10.3289/CR_AL355.

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Abstract

Kiel – Visby – Ventspils ‐ Kiel: 29. 05. – 21. 06. 2010
Cruise ALKOR 355 (AL‐355) was carried out within the framework of the EU FP‐7 project “HYPOX” (In situ monitoring of oxygen depletion in hypoxic ecosystems of coastal and open seas, and land‐locked water bodies). The scientific objectives focused on redox‐dependent nutrient and nitrogen cycles in the benthic boundary layer of the suboxic to anoxic Gotland Basin. The scientific party comprised of scientist from the IFM‐GEOMAR, Kiel (Germany). Main objectives were to study release rates and
inventories of nutrients and nitrogen compounds under varying degrees of bottom water oxygenation in the anoxic to suboxic eastern Gotland Basin (central Baltic). Another goal was to quantify source/sink mechanisms of the benthic boundary layer for nitrogen species and nutrients under changing oxygen conditions to assess potential feedbacks on the upper mixed layer processes.
In order to obtain these goal, we monitored the water column, sampled surface sediments and
deployed several landers along a transect from oxygenated to suboxic and anoxic to sulfide benthic boundary layer conditions in the Latvian EEZ of the eastern Gotland Basin in a depth range from 49m to 235m.

Document Type: Report (Cruise Report)
Keywords: ALKOR 355; Baltic Sea Gotland Basin
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
Open Access Journal?: Yes
DOI etc.: 10.3289/CR_AL355
Related URLs:
Projects: HYPOX
Expeditions/Models/Experiments:
Date Deposited: 08 Jul 2014 12:12
Last Modified: 08 Jul 2014 12:12
URI: http://oceanrep.geomar.de/id/eprint/25286

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