Deutsches Ozeanographisches
Datenzentrum Inventur der Meteor-Reise M87-3A (DOD-Ref-No.20120263)
Inventory of Meteor Cruise M87-3A (DOD-Ref-No.20120263)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Meteor M87-3A 29.05.2012 - 10.06.2012   North Sea Baltic Sea  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Labrenz Matthias Leibniz-Institut fur Ostseeforschung, Warnemunde Stavanger Rostock   

Ziel der Reise / Objectives of Cruise:

The Baltic Sea with its natural gradients and strong reactions to climate change and anthropogenic activity can be used in an ideal way to examine basic ecological processes and their variability in marine ecosystems. The most striking characteristics of the Baltic Sea are the extended gradients in primary (topography, energy, salinity) and secondary (organisms, matter flux, oxygen, nutrients, sediments) environmental properties as a result of different dynamical processes. Leg M87/3a investigates the impact of salinity gradients on degradation of terrestrial dissolved organic matter (tDOC), microbially mediated processes, and on the structure and function of pelagic microbial communities in the Baltic Sea. Following aims were central to this study: (1) Assessment of structure and (selected) functions of pelagic microbial communities (Bacteria, Archaea, Zooplankton) in order to examine whether salinity-related phylogenetic shifts in microbial communities imply relevant functional changes. It provides the general background for the more specific question of decomposition dynamics of imported terrigenous compounds. (2) Quantification, chemical characterization and decomposition of discharged terrestrial DOC from Northern (arctic) soils in relation to microbial diversity. The aim is to assess the decomposition capacity for organic matter, particularly the degradation potential for introduced terrestrial carbon compounds, along the horizontal salinity gradient of the Baltic Sea. The overall aim of these studies is to gain a comprehensive understanding of the effect of imported terrigenous and autigenous organic material on microbial decomposition processes within the salinity and gradients of the Baltic Sea.   To reach this goal, in general water, fixed water, zooplankton, as well as sediment samples were taken throughout a transect of 27 stations, covering the whole Baltic salinity gradient. Isotopes were analyzed continuously. Morever, microbial decomposition experiments were directly done on board.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
IOW Herlemann Daniel 3 dm? B07
Pelagic bacteria / micro-organisms
3 x 400 l Microbial organic matter decomposition experiments based on water of stations At1,3,4 (400 l) no
IOW Jost G. 27 dm? B07
Pelagic bacteria / micro-organisms
27 x 200 l Sampling of fixed and non-fixed water for analysis of microbial gene expression no
IOW Labrenz Matthias 4 dm? B07
Pelagic bacteria / micro-organisms
4 x 10 l Microbial organic matter decomposition experiments no
ISFWHV Hofmann Thorben 21 hauls B09
Zooplankton
Sampling of zooplankton from surface waters throughout the transect, one vertical profile no
IOW Klier Julia 10 cores B16
Benthic bacteria / micro-organisms
Sediment cores for analysis of protozoa diversity no
IOW Labrenz Matthias 1 stations H00
Stations
- yes
USTOCK Humborg Christoph 4074 km H74
Carbon dioxide
Isotopic composition of organic matter and inorganic carbon no
IOW Labrenz Matthias 1 n miles H80
Other physical measurements
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on yes

Verankerungen / Moorings

Institut
Institute
Wissenschaftler
Scientist
Typ der Messungen
Type of measurements
Kommentar
Comments
geogr.Breite
Latitude
geogr.Länge
Longitude
Daten im DOD
Data in DOD
IOW Hehl U. B73 Deployed (02.06.12): 1 Mooring with 1 sediment trap at 50 m, 1 sediment trap at 70 m 57° 19.0' N 20° 6.0' E no
IOW Hehl U. B73 Recovered, deployed (03.06.12): 1 Mooring with 1 trap at 55 m depth, 5 Micro-CAT, 1 ADCP 57° 18.3' N 20° 4.7' E no
IOW Hehl U. D71 Recovered, deployed (03.06.12): 1 Mooring with 1 trap at 55 m depth, 5 Micro-CAT, 1 ADCP 57° 18.3' N 20° 4.7' E no
23.3.2024