Publication Date:
2021-01-28
Description:
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.
Type:
Report
,
NonPeerReviewed
Format:
text
