| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Maria S. Merian | MSM21-3 | 25.07.2012 - 10.08.2012 | GEOHAB |
Irminger Basin North Atlantic Ocean |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Cembella Allan | Alfred-Wegener-Institut fur Polar- und Meeresforschung | Nuuk (Greenland) | Reykjavik |
Ziel der Reise / Objectives of Cruise:
The Ecosystem component of the MSm21 cruise ARCHEMHAB (Leg MSm21/3) addressed interactions and feedbacks among hydrographic regimes, biogeochemical and bio-optical signatures and phytoplankton species diversity, with a focus on potentially toxigenic species associated with Harmful Algal Blooms (HABs). In particular we focused on key questions regarding population genetics in relation to molecular ecological and chemically defined marine provinces and potential spreading of selected toxic species within the Arctic and adjacent waters. With respect to global change, the objective was to characterize the composition of coastal water for definable organic components and marine biooptical properties, with linkages to the effect of coastal proximity and glacial melt in the fjordal systems. These objectives were addressed by the following specific elements: 1) establishing an inventory of the phytoplankton diversity with emphasis on HAB species and of phycotoxins in various planktonic fractions; 2) on board isolation and culturing of selected HAB taxa from plankton populations and cysts for further investigations on molecular genetics, life history strategies, mixotrophy, allelochemical capacity and production of bioactive natural products including toxins; 3) determining the composition of DOM in the water column by the measurement of bio-molecules (e.g. amino acids, sugars, lipids) and extraction of DOM for FT-ICR-MS measurements. By combining data from the oceanographic, biogeochemical and bio-optical components with conceptual modeling, we contributed to major advances in understanding Arctic coastal ecosystems with regards to the distribution and dynamics of key HAB species and to the influence of glacial melt-water discharge on water chemistry.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| AWI | Cembella Allan | 400 | stations | B02 Phytoplankton pigments (e.g. chlorophyll, fluorescence) |
Chlorophyll samples | no |
| AWI | Koch Boris | 1 | stations | B06 Dissolved organic matter (e.g. DOC) |
Dissolved organic carbon (DOC) from water sampler | no |
| AWI | Cembella Allan | 130 | stations | B08 Phytoplankton |
Phytoplankton samples from water sampler | no |
| AWI | Cembella Allan | 38 | grabs | G02 Grab |
Chlorophyll samples | no |
| AWI | Cembella Allan | 43 | stations | G90 Other geological or geophysical measurements |
Plankton samples via pump | no |
| AWI | Cembella Allan | 45 | stations | G90 Other geological or geophysical measurements |
Net hauls | no |
| AWI | Cembella Allan | 1 | stations | H09 Water bottle stations |
Biochemical measurements (lipids etc.) | no |
| AWI | Cembella Allan | 1 | stations | H09 Water bottle stations |
Nutrients H22, H24, H25 (phosphate, nitrate, nitrite) from water sampler | no |
| LMTBHV | Zielinski Oliver | 43 | stations | H10 CTD-Stations |
CTD casts & water sampler | no |
| LMTBHV | Zielinski Oliver | 5185 | km | H11 Sub-surface measurements underway (T, S) |
Continuous automated recordings along a transect (salinity) | no |
| LMTBHV | Zielinski Oliver | 5185 | km | H11 Sub-surface measurements underway (T, S) |
Continuous automated recordings along a transect (temperature) | no |
| AWI | Cembella Allan | 84 | stations | H17 Optics (e.g. underwater light levels) |
Optics: Underwater lightfield- Satlantic Profiler | no |
| LMTBHV | Zielinski Oliver | 26 | stations | H17 Optics (e.g. underwater light levels) |
Optics: Forel-Ule scale | no |
| LMTBHV | Zielinski Oliver | 26 | stations | H17 Optics (e.g. underwater light levels) |
Optics: Secchi disk | no |
| LMTBHV | Zielinski Oliver | 5185 | km | H24 Nitrates |
Continuous automated recordings along a transect, optical, Absorption&Fluoresence | no |
| AWI | Cembella Allan | 1 | n miles | H80 Other physical measurements |
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on | yes |
| LMTBHV | Zielinski Oliver | 130 | stations | P01 Suspended matter |
Suspended particulate material (SPM) samples | no |