Deutsches Ozeanographisches
Datenzentrum Inventur der Heincke-Reise HE419 (DOD-Ref-No.20140153)
Inventory of Heincke Cruise HE419 (DOD-Ref-No.20140153)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Heincke HE419 02.04.2014 - 13.04.2014   North Sea  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Gutow Lars Alfred-Wegener-Institut fur Polar- und Meeresforschung Bremerhaven Bremerhaven   

Ziel der Reise / Objectives of Cruise:

Aim of the cruise North Sea benthos ecological research of the AWI is based on two major approaches: long-term ecological research and geo-referenced ecological modeling. The core of these approaches is (1) a continuous long-term ecological research program initiated 1969 and (2) an extensive data base on benthos ecological and environmental data. The aim of the research cruise in spring 2014 was to conduct the annual sampling of the benthic long-term ecological research program and to fill spatial gaps in the benthos-ecological database. We planned to sample the benthic in- and epifauna of the German Bight. Additionally, site specific sedimentological and hydrographic background data should be collected that will help explain observed spatial and temporal variation of benthic communities in the German North Sea. Implementation At each of four benthic ecological long-term stations five sediment samples were taken with a 0.1 m2 van Veen grab to analyse the local benthic infaunal communities. The samples were sieved through a 500 ?m sieve. A subsample from the fifth sample was taken to analyse local sedimentological parameters and the bottom temperature was measured. The retained organisms were fixed in 4 % BORAX-buffered formalin. Quantitative (abundance, biomass), taxonomical and sedimentological analysis of the samples will be conducted in the AWI laboratory after the cruise. At each of the 101 benthos stations 3 sediment samples were taken with the same grab. The samples were sieved through a 1000 ?m sieve. The retained organisms were fixed for later analysis in the laboratory. A fourth sample at each station provided a subsample that was used to analyse the local sedimentological conditions and the bottom temperature. At each station the benthic epifauna was sampled with a 2 m beam trawl (mesh size: 1 cm) which was trawled for 10 min at a speed of 2-3 knots. The organisms were determined immediately onboard, counted and weighed. At sensitive reef stations a 1 m benthos dredge was used instead of the beam trawl. Vertical CTD-profiles were recorded at selected stations. In addition to the originally program we quantified anthropogenic litter caught with the beam trawl at each station and used the transitions between the benthos stations for counting floating anthropogenic litter items at the sea surface.

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 Gutow Lars 99 hauls B18
Zoobenthos
2m beam trawl for quantifying epibenthos and demersal fish. 02.04.2014 no
AWI Gutow Lars 9 hauls G01
Dredge
1m dredge for qualitative survey of macrozoobenthic epifauna. 02.04.2014 no
AWI Gutow Lars 458 samples G02
Grab
van Veen grab; 0.1 m2; 90 kg. 02.04.2014 no
AWI Gutow Lars 2 hour(s) G71
In-situ sea floor measurements
15 underwater video transects to describe composition of towed underwater video camera for assessing macrozoobenthic epifauna and seafloor conditions. 02.04.2014 no
AWI Gutow Lars 11 profiles H10
CTD-Stations
temperature, oxygen, light attenuation. 02.04.2014 no

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
AWI Gutow Lars B18 AWI zoobenthos long-term station van Veen grab & beam trawl 54° 0.5' N 7° 49.0' E no
AWI Gutow Lars B18 AWI zoobenthos long-term station van Veen grab & beam trawl 54° 3.0' N 8° 5.0' E no
AWI Gutow Lars B18 AWI zoobenthos long-term station van Veen grab & beam trawl 54° 22.5' N 7° 37.0' E no
AWI Gutow Lars B18 AWI zoobenthos long-term station van Veen grab & beam trawl 55° 0.0' N 6° 30.0' E no
9.11.2019