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Hickel, Wolfgang (1999): Hydrochemistry and phytoplankton abundance at time series station Helgoland Roads, North Sea, in 1972. PANGAEA,

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Hickel, Wolfgang (1973): Jahresbericht 1972. Biologische Anstalt Helgoland, aus dem Geschäftsbereich des Bundesministers für Bildung und Wissenschaft, 104 pp
Latitude: 54.188330 * Longitude: 7.900000
Date/Time Start: 1972-01-03T10:00:00 * Date/Time End: 1972-12-29T09:40:00
Minimum Elevation: -10.0 m * Maximum Elevation: -10.0 m
HelgolandRoads1972 * Latitude: 54.188330 * Longitude: 7.900000 * Date/Time Start: 1972-01-01T00:00:00 * Date/Time End: 1972-12-31T23:59:00 * Elevation: -10.0 m * Location: German Bight, North Sea * Campaign: HelgolandRoadsTimeseries * Basis: Meeresstation Helgoland * Device: Monitoring (MON)
#NameShort NameUnitPrincipal InvestigatorMethodComment
2Temperature, waterTemp°CHickel, WolfgangMercury thermometer, in situ
3SalinitySalHickel, WolfgangSalinometer, inductive
4Depth of Secchi Diskz(SD)mHickel, WolfgangSecchi disc
5Nitrate[NO3]-µmol/lHickel, WolfgangReduction by copper coated cadmium granulate
6Nitrite[NO2]-µmol/lHickel, WolfgangPhotometer, azo-dye (Bendschneider & Robinson, 1952, J Mar Res, 11:87-96)
7Ammonium[NH4]+µmol/lHickel, WolfgangBordeaux red, improved by Gillbricht, 1961
8Nitrogen, inorganic, dissolvedDINµmol/lHickel, WolfgangCalculated (sum of Nitrate, Nitrite, Ammonium)
9Phosphate[PO4]3-µmol/lHickel, WolfgangPhotometer, molybdene blue, reduct SnCl
10SilicateSi(OH)4µmol/lHickel, WolfgangPhotometer, beta-silicomolybdic acid
11PhytoplanktonPhytopl#/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
12DiatomsDiatoms#/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
13FlagellatesFlag#/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
14Phytoplankton, biomass as carbonPhytopl Cµg/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
15Diatoms, biomass as carbonDiatom Cµg/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
16Flagellates, biomass as carbonFlagellate Cµg/lHickel, WolfgangQuantitative phytoplankton method (Utermöhl, 1958)
17AnalystAnalystHickel, Wolfgang
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