| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| G.O. Sars 3 | 2008102 | 31.03.2008 - 11.04.2008 | South Atlantic Ocean |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Palm Anne Christine Utne | Geophysical Institute Bergen, Norway | Walvis Bay | Walvis Bay |
Ziel der Reise / Objectives of Cruise:
This projects aim is to investigate how the goby (Sufflogobius bibarbatus) and the shallow water hake (Merluccius capensis) \ncope with the hypoxic waters of the Benguela current. Both are key species of the ecosystem. They show a remarkable \ntolerance to the hypoxic conditions found in this up-welling area, which is one of the five most productive marine ecosystems\nof the world. Due to high sedimentation rate, large areas of the shelf are covered with hydrogen sulphide sediments, \nmaking hypoxic conditions above and in the water column. As key species with strong influence on the ecosystem \nfunctioning and productivity, these species ought to have evolved a very special physiology and behaviour making them\nso successful in this extreme marine environment. By this research cruise we want to gain knowledge on how these two \nspecies cope with the hypoxic environment, and why the goby (Sufflogobius bibarbatus) is such a successful species \nin the Benguela up-welling system. \nThis project is financially supported by the Norwegian and the South African Research Councils, with the goal of providing common research opportunities for scientists and post graduate students in South Africa, Namibia and Norway.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| UIB | Palm Anne Christine Utne | 51 | stations | B02 Phytoplankton pigments (e.g. chlorophyll, fluorescence) |
Fluroscence mounted on the CTD. | no |
| UWC | Gibbons Mark | 14 | hauls | B09 Zooplankton |
Mocness Vertical tow. | no |
| UWC | Gibbons Mark | 21 | hauls | B14 Pelagic fish |
Pelagic trawl, krill trawl with multisampler (3 cod ends). | no |
| UWC | Gibbons Mark | 20 | hauls | B19 Demersal fish |
Demersal trawl one cod end. | no |
| UIO | Kaartvedt Stein | 11 | day(s) | B28 Acoustic reflection on marine organisms |
Was on during the entire survey. | no |
| NATMIR | Currie Bronwen | 10 | stations | G02 Grab |
Grab sampling soft bottom inner shelf and more cores bottom on the outer shelf. | no |
| NATMIR | Currie Bronwen | 13 | stations | G04 Core-soft bottom (no. of cores) |
Corer sampling the soft bacterial mats on the bottom on the inner shelf. | no |
| UIO | Kaartvedt Stein | 11 | day(s) | G74 Multi-beam echosounding |
Was on during the entire survey. | no |
| UIB | Palm Anne Christine Utne | 51 | stations | H10 CTD-Stations |
CTD, Temp., Salinity, Pressure, Vertical profiles. | no |
| UIB | Palm Anne Christine Utne | 51 | stations | H17 Optics (e.g. underwater light levels) |
Mounted on the CTD. | no |
| UIB | Palm Anne Christine Utne | 51 | stations | H21 Oxygen |
Oxygen mounted on the CTD. | no |