| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Poseidon | POS520 | 14.02.2018 - 01.03.2018 | Equatorial East Atlantic |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Hoving Hendrik Jan Thies | Helmholtz Centre for Ocean Research Kiel (GEOMAR) | Mindelo | Mindelo |
Ziel der Reise / Objectives of Cruise:
The aim of this cruise was to investigate the biodiversity, abundance and distribution of pelagic fauna, including nekton and macrozooplankton, in the deep-sea ecosystem of Cape Verde, and to combine biological observations with chemical and physical observations. We used the manned submersible JAGO (14 dives), the towed camera system PELAGIOS (9 deployments), and two kinds of multinet (midi and maxi) (9 and 12 hauls respectively), as well as CTD sampling to collect hydrographic data and environmental DNA samples. In the leeway of the islands Santo Ant?o and Fogo we performed mesopelagic stations (1000 m) and bathypelagic stations (3000 m) using the mentioned instruments. Elaborate physical sampling around the islands was performed using CTD, microstructure and ADCP. A mesoscale eddy was sampled with all our oceanographic instruments. Additionally we performed a full oceanographic and biological sampling at the Cape Verde Ocean Observatory, north of Sao Vicente. Our sampling provided one of the first views on the nearshore pelagic deep-sea ecosystem of Cape Verde using our observational instruments, and the biological specimens collected resulted in unique photographic and biological records of poorly known organisms. The data will contribute to establish baseline biological observations of the Cape Verdean deep sea, and to investigate the role of large pelagic fauna, including gelatinous macrozooplankton, in the transport of carbon from the water column to the seafloor.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| GEOMAH | Hauss Helena | 14 | profiles | B01 Primary productivity |
CTD Nutrients, 212 samples to be analysed on shore. | no |
| GEOMAH | Hauss Helena | 9 | profiles | B09 Zooplankton |
Multinet midi, 45 samples (including day and night samples) to be analysed on shore, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hauss Helena | 12 | profiles | B09 Zooplankton |
Multinet maxi, 108 samples (including day and night samples) to be analysed on shore, max. depth 2500 m, about 17 hours of video collected on multinet, to be analysed on shore, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hoving Hendrik Jan Thies | 9 | profiles | B09 Zooplankton |
PELAGIOS, towed camera, approximately 27 hours of video to be analysed on shore (including day and night tows), biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hissmann Karen | 15 | diving(s) | B09 Zooplankton |
Open water dives with manned submersible JAGO at day and night time, total dive time 43h37min, survey depth 25-376 m, USBL position data for each dive, 8 different dive participants, 34h19min video recordings, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hissmann Karen | 35 | hauls | B09 Zooplankton |
Samples of pelagic organisms taken during submersible dives with scoop tubes and suction sampler to be analysed on board the vessel and ashore. | no |
| NMNH | Osborn Karen | 281 | samples | B09 Zooplankton |
Voucher biological specimens, To be analyzed ashore. | no |
| NMNH | Osborn Karen | 344 | samples | B09 Zooplankton |
Barcode samples, To be analyzed ashore. | no |
| NMNH | Osborn Karen | 2696 | Film(s) | B09 Zooplankton |
Photo vouchers, To be analyzed ashore. | no |
| GEOMAH | Merten Veronique | 121 | samples | B09 Zooplankton |
Tissue samples for barcoding; analysis on shore: Barcoding . | no |
| GEOMAH | Hauss Helena | 9 | profiles | B11 Nekton |
Multinet midi, 45 samples (including day and night samples) to be analysed on shore, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hauss Helena | 12 | profiles | B11 Nekton |
Multinet maxi, 108 samples (including day and night samples) to be analysed on shore, max. depth 2500 m, about 17 hours of video collected on multinet, to be analysed on shore, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hoving Hendrik Jan Thies | 9 | profiles | B11 Nekton |
PELAGIOS, towed camera, approximately 27 hours of video to be analysed on shore (including day and night tows), biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hissmann Karen | 15 | diving(s) | B11 Nekton |
Open water dives with manned submersible JAGO at day and night time, total dive time 43h37min, survey depth 25-376 m, USBL position data for each dive, 8 different dive participants, 34h19min video recordings, biodiversity, abundance and distribution analysis. | no |
| NMNH | Osborn Karen | 344 | samples | B11 Nekton |
Barcode samples, To be analyzed ashore. | no |
| NMNH | Osborn Karen | 2696 | Film(s) | B11 Nekton |
Photo vouchers, To be analyzed ashore. | no |
| GEOMAH | Merten Veronique | 121 | samples | B11 Nekton |
Tissue samples for barcoding; analysis on shore: Barcoding . | no |
| GEOMAH | Hoving Hendrik Jan Thies | 9 | profiles | B14 Pelagic fish |
PELAGIOS, towed camera, approximately 27 hours of video to be analysed on shore (including day and night tows), biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hissmann Karen | 15 | diving(s) | B14 Pelagic fish |
Open water dives with manned submersible JAGO at day and night time, total dive time 43h37min, survey depth 25-376 m, USBL position data for each dive, 8 different dive participants, 34h19min video recordings, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hoving Hendrik Jan Thies | 9 | profiles | B20 Molluscs |
PELAGIOS, towed camera, approximately 27 hours of video to be analysed on shore (including day and night tows), biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hissmann Karen | 15 | diving(s) | B20 Molluscs |
Open water dives with manned submersible JAGO at day and night time, total dive time 43h37min, survey depth 25-376 m, USBL position data for each dive, 8 different dive participants, 34h19min video recordings, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hoving Hendrik Jan Thies | 9 | profiles | B21 Crustacean |
PELAGIOS, towed camera, approximately 27 hours of video to be analysed on shore (including day and night tows), biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hissmann Karen | 15 | diving(s) | B21 Crustacean |
Open water dives with manned submersible JAGO at day and night time, total dive time 43h37min, survey depth 25-376 m, USBL position data for each dive, 8 different dive participants, 34h19min video recordings, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hissmann Karen | 35 | hauls | B21 Crustacean |
Samples of pelagic organisms taken during submersible dives with scoop tubes and suction sampler to be analysed on board the vessel and ashore. | no |
| GEOMAH | Hoving Hendrik Jan Thies | 9 | profiles | B90 Other biological / fishery measurements |
PELAGIOS, towed camera, approximately 27 hours of video to be analysed on shore (including day and night tows), biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Hissmann Karen | 15 | diving(s) | B90 Other biological / fishery measurements |
Open water dives with manned submersible JAGO at day and night time, total dive time 43h37min, survey depth 25-376 m, USBL position data for each dive, 8 different dive participants, 34h19min video recordings, biodiversity, abundance and distribution analysis. | no |
| GEOMAH | Merten Veronique | 6 | profiles | B90 Other biological / fishery measurements |
Vertical CTD profiles for collecting water samples for eDNA; analysis on shore: Metabarcoding. | no |
| GEOMAH | Schutte Florian | 17 | day(s) | D71 Current profiler (e.g. ADCP) |
Underway measurements of the Vessel-mounted ADCP . | no |
| GEOMAH | Schutte Florian | 65 | profiles | D90 Other physical oceanographic measurements |
Shipboard microstructure measurements. | no |
| GEOMAH | Schutte Florian | 66 | stations | H00 Stations |
- | yes |
| GEOMAH | Schutte Florian | 14 | profiles | H09 Water bottle stations |
CTD, temperature and salinity profiles. | no |
| GEOMAH | Schutte Florian | 14 | profiles | H10 CTD-Stations |
CTD, temperature and salinity profiles. | no |
| GEOMAH | Hissmann Karen | 9 | profiles | H11 Sub-surface measurements underway (T, S) |
CTD, depth, temperature and salinity profiles; recorded with small SAIV A/S SD204 CTD attached to the stern of the submersible JAGO. | no |
| GEOMAH | Schutte Florian | 14 | profiles | H21 Oxygen |
Oxygen by Winkler titration. | no |