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Cruise Summary Report Inventory (CSR)

Cruise Summary Report of Elisabeth Mann Borgese Cruise EMB123 (BSH Ref-No.: 20160098)

Elisabeth Mann Borgese
Warnemünde, Germany
Warnemünde, Germany
Prof.Dr. Maren VOSS - Leibniz Institute for Baltic Sea Research Warnemünde
Leibniz Institute for Baltic Sea Research Warnemünde
Baltic Sea
215 (50.0, 60.0, 10.0, 20.0)
Within the framework of the COCOA project a third cruise was started to study the processes induced by Vistula river plume in the Bay of Gdanks during the annual major outflow period. Previous cruises took place in July 2014 and January/February 2015. Scientists from the Leibniz-Institute of Baltic Sea Research, University of Finland, and students from the University of Rostock and Galway were on board. The vessel left Rostock harbor February 27, 2016 in the morning and sailed without any delay to Gdynia. Arriving in the afternoon of the next day we met colleagues from the University of Gdansk and two students from the University joined the research team on board Elisabeth Mann Borgese. Station work started at February 29 at VE 07 with the deployment of a small lander system which was programmed to collect water above the sediment in fine vertical resolution into syringes to resolve nutrient concentrations above the sea bottom. Water sampling with a CTD and bottle system and sediment sampling followed. Our study area was sampled from the most eastward station VE27 to station VE46 off Hel peninsula, the latter is a regularly visited Polish monitoring station. We could thus cover the outflow region and beyond. We studied the BBL in detail and sediment processes, thus focusing on nitrification, denitrification, anammox and dissimilative nitrate reduction to ammonia (DNRA) pathways. The large variety of sediment types in the vicinity of the coast causes different sediment permeabilities which are expected to impact the processing of nutrients and particles in the bottom near layer and in sediments. From the some cores we collected we subsampled for permeability, grain size, pore water nutrient concentrations and organic matter content. Sediments were incubated to estimate microbial N-turnover. Altogether 25 stations were sampled from February 29 to March 10 2016 with CTD casts and on most stations also sediments with grabs, multicorer (MUC), box corer, and/or Haps corer, respectively were taken. We had 9 lander deployments for short term periods between one and 12 hours.
 ›› Report    ›› Station list  
Prof. Dr. Maren VOSS -  Leibniz Institute for Baltic Sea Research, Warnemünde, Biolgical Oceanography
Prof. Dr. Ula JANASZ -  UNKNOWN, University Gdansk
S. HIETANEN -  Department of Biological and Environmental Sciences, Aquatic Sciences, University of Helsinki

Summary of Measurements and Samples

PI Number Type Unit Type of measurement Description Reference date
B 10 B18 stations Zoobenthos zoobenthos collected
B 27 B71 stations Particulate organic matter (e.g. POC, PON) organic matter in sediments
A 15 B90 stations Other biological / fishery measurements nitrification rates surface
C 8 B90 stations Other biological / fishery measurements denitrification rates in sediment
PI Number Type Unit Type of measurement Description Reference date
A 13 H22 stations Phosphates Phosphat
A 13 H24 stations Nitrates Nitrat
PI Number Type Unit Type of measurement Description Reference date
A 27 H10 stations CTD-Stations Temp, Sal, Oxygen