Krivenko, O V; Lukjanova, A L (1994): (Table 2) Rates of nitrate and ammonium uptake, concentrations of particulate organic nitrogen and carbon, and dissolved nitrate and ammonium in waters of the Black Sea August-September 1990 and November 1991 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.763708, Supplement to: Krivenko, OV; Lukjanova, AL (1994): Inorganic nitrogen uptake by Black Sea microplankton in connection with hydro chemical conditions. Translated from Okeanologiya, 1994, 34(2), 232-239, Oceanology, 34(2), 206-213
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Abstract:
To study inorganic nitrogen uptake rates by microplankton in the Black Sea the first 15N-experiments were carried out in August-September 1990 and in November 1991. In surface waters nitrate uptake rates varied from 5.7 to 28.5 nM/l/h in summer and from 1.9 to 7.8 nM/l/h in autumn. In both seasons maximal and minimal rates were observed in frontal zones of shelf/slope areas and in open waters, respectively. In summer average nitrate uptake rate per unit of particulate organic nitrogen was 0.0037 1/h for all stations. In autumn it varied from 0.0007 1/h in the central part of the sea to 0.0033 1/h in the slope near the southeastern Crimean coast. In autumn ammonium uptake rate varied from 7.1 to 22.2 nM/l/h and from 0.0025 to 0.00094 1/h. Ammonium uptake correlated linearly with nitrate uptake, with new production being 22-36% of total summary nitrate and ammonium uptake. There was a linear correlation between nitrogen uptake and chlorophyll a concentrations in the Black Sea. In the water column in autumn both nitrate and ammonium uptake decreased as chlorophyll a concentration diminishes with depth.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 44.425833 * Median Longitude: 33.735833 * South-bound Latitude: 43.510000 * West-bound Longitude: 31.280000 * North-bound Latitude: 45.780000 * East-bound Longitude: 37.560000
Date/Time Start: 1990-08-24T00:00:00 * Date/Time End: 1991-11-21T00:00:00
Minimum DEPTH, water: 0 m * Maximum DEPTH, water: 25 m
Event(s):
PV32-9 * Latitude: 45.780000 * Longitude: 31.280000 * Date/Time: 1990-08-28T00:00:00 * Location: Black Sea * Campaign: PV32 * Basis: Professor Vodyanitskiy * Method/Device: Water sample (WS)
PV32-10 * Latitude: 45.000000 * Longitude: 32.020000 * Date/Time: 1990-08-24T00:00:00 * Location: Black Sea * Campaign: PV32 * Basis: Professor Vodyanitskiy * Method/Device: Water sample (WS)
PV32-15 * Latitude: 43.510000 * Longitude: 35.760000 * Date/Time: 1990-09-06T00:00:00 * Location: Black Sea * Campaign: PV32 * Basis: Professor Vodyanitskiy * Method/Device: Water sample (WS)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Date/Time of event | Date/Time | ||||
| 5 | DEPTH, water | Depth water | m | Geocode | ||
| 6 | Nitrate uptake rate | NO3 upt rate | nmol/l/h | Krivenko, O V | Radiometric counting of introduced radioisotopes | |
| 7 | Ammonium uptake rate | [NH4]+ upt rate | nmol/l/h | Krivenko, O V | Radiometric counting of introduced radioisotopes | |
| 8 | Nitrate uptake rate, specific | NO3 upt rate spec | 1/day | Krivenko, O V | Calculated | |
| 9 | Ammonium uptake rate, specific | [NH4]+ upt rate spec | 1/day | Krivenko, O V | Calculated | |
| 10 | Nitrogen, organic, particulate | PON | µmol/l | Krivenko, O V | Element analyser CHN | |
| 11 | Carbon, organic, particulate | POC | µmol/l | Krivenko, O V | Element analyser CHN | |
| 12 | Chlorophyll a | Chl a | µg/l | Krivenko, O V | Colorimetry | |
| 13 | Nitrate | [NO3]- | µmol/l | Krivenko, O V | Colorimetry | |
| 14 | Ammonium | [NH4]+ | µmol/l | Krivenko, O V | Colorimetry |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
139 data points