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Wahl, E; Hickel, Wolfgang (1999): Hydrochemistry and phytoplankton abundance at time series station Helgoland Roads, North Sea, in 1990 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.55849, In: Wiltshire, Karen Helen; Carstens, Kristine; Ecker, Ursula; Kirstein, Inga V (2024): Hydrochemistry at time series station Helgoland Roads, North Sea since 1873 [dataset publication series]. Alfred Wegener Institute - Biological Institute Helgoland, PANGAEA, https://doi.org/10.1594/PANGAEA.960375

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Related to:
Wahl, E (1991): Jahresbericht 1990. Biologische Anstalt Helgoland, aus dem Geschäftsbereich des Bundesministers für Bildung und Wissenschaft, 174 pp
Funding:
Fourth Framework Programme (FP4), grant/award no. MAS3970141: Silicon Cycling in the World Ocean
Coverage:
Latitude: 54.188330 * Longitude: 7.900000
Date/Time Start: 1990-01-02T07:25:00 * Date/Time End: 1990-12-28T07:35:00
Minimum DEPTH, water: 0.5 m * Maximum DEPTH, water: 0.5 m
Event(s):
HelgolandRoads1990 (Kabeltonne) * Latitude: 54.188330 * Longitude: 7.900000 * Date/Time Start: 1990-01-01T00:00:00 * Date/Time End: 1990-12-31T23:59:00 * Elevation: -10.0 m * DEIMS ID: deims.org * O2A Registry URI: registry.o2a-data.de * Location: German Bight, North Sea * Campaign: LTER_HelgolandRoads (Kabeltonne, Long-term Ecological Research Helgoland Roads) * Basis: Marine Station Helgoland * Method/Device: Monitoring (MON)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeGeocode
2DEPTH, waterDepth watermGeocode
3Temperature, waterTemp°CHickel, WolfgangMercury thermometer, in situ
4SalinitySalHickel, WolfgangSalinometer, inductive
5Depth of Secchi Diskz(SD)mHickel, WolfgangSecchi disc
6Nitrate[NO3]-µmol/lHickel, WolfgangReduction by copper coated cadmium granulate
7Nitrite[NO2]-µmol/lHickel, WolfgangPhotometer, azo-dye (Bendschneider & Robinson, 1952, J Mar Res, 11:87-96)
8Ammonium[NH4]+µmol/lHickel, WolfgangPhotometer, DTT, modified (Grasshoff et al., 1983, Verlag Chemie GmbH Weinheim)
9Nitrogen, inorganic, dissolvedDINµmol/lHickel, WolfgangCalculated (sum of Nitrate, Nitrite, Ammonium)
10Phosphate[PO4]3-µmol/lHickel, WolfgangPhotometer, molybdene blue, reduct ascorbic acid (Grasshoff, 1979, Chemie GmbH)
11SilicateSi(OH)4µmol/lHickel, WolfgangPhotometer, beta-silicomolybdic acid, modified (Carlberg, 1972, ICES Res Rep 29)
12PhytoplanktonPhytopl#/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
13DiatomsDiatoms#/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
14FlagellatesFlag#/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
15Phytoplankton, other, biomass as carbonPhytopl Cµg/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
16Diatoms, biomass as carbonDiatom Cµg/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
17Flagellates, biomass as carbonFlagellate Cµg/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
18AnalystAnalystHickel, Wolfgang
Size:
3887 data points

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