Vedernikov, Vladimir I; Demidov, A B; Sud'bin, Anatoly I (1995): (Table 1) Productivity characteristics of phytoplankton and some concomitant factors in the Kara Sea in September 1993 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.755793, Supplement to: Vedernikov, VI et al. (1995): Primary production and chlorophyll in the Kara Sea in September 1993. Oceanology, 34(5), 630-640
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Abstract:
Primary production in water column (P_p) varied from 107 to 312 mg C/m**2/day in Yenisey Bay: from 25 to 63 mg C/m**2/day in Obskaya Guba: and from 20 to 359 mg C/m**2/day in the open sea, that is: in the western Kara Sea and Ob-Yenisey shoals. The average concentration of chlorophyll a in the photosynthesis layer (C_ph) ranged from 0.2 to 1.8 mg/m**3 in these two regions, lower than in the estuaries of Ob (1.6-21.7 mg/m**3) and Yenisey (2.0-5.2 mg/m**3) Rivers. An inverse relation between surface salinity (S) and chlorophyll concentration (C_s) and chlorophyll concentration in the photosynthesis layer was found for all of the regions. The highest values of C_s and C_ph (0.8-22 mg/m**3) were measured at S<10 ppt, and the lowest values (0.2-0.8 mg/m**3) at S>22 ppt. A similar correlation of S with values of Pp occurred only in the Yenisey Bay and offshore regions. Obtained results agree well with the "outwelling" hypothesis. It states that large part of organic matter produced in estuaries is not used in estuarine trophic chains but is transported into adjacent sea areas and increases their productivity. Low values of Pp in the study regions may be attributed to such unfavorable factors as deficiency in nutrients, low temperature and turbidity, and lack of solar radiation.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 72.664977 * Median Longitude: 72.427852 * South-bound Latitude: 68.824700 * West-bound Longitude: 58.200800 * North-bound Latitude: 76.010500 * East-bound Longitude: 83.318700
Date/Time Start: 1993-08-30T00:00:00 * Date/Time End: 1993-09-29T00:00:00
Minimum Elevation: -381.0 m * Maximum Elevation: -13.4 m
Event(s):
DM49-4378b * Latitude: 71.636800 * Longitude: 58.884300 * Date/Time: 1993-08-30T00:00:00 * Elevation: -170.0 m * Location: Kara Sea * Campaign: DM49 (SPASIBAIII) * Basis: Dmitry Mendeleev * Method/Device: Bottle, Niskin (NIS)
DM49-4380b * Latitude: 72.703700 * Longitude: 59.902300 * Date/Time: 1993-08-31T00:00:00 * Elevation: -121.0 m * Location: Kara Sea * Campaign: DM49 (SPASIBAIII) * Basis: Dmitry Mendeleev * Method/Device: Bottle, Niskin (NIS)
DM49-4381b * Latitude: 72.662800 * Longitude: 58.200800 * Date/Time: 1993-08-31T00:00:00 * Elevation: -381.0 m * Location: Kara Sea * Campaign: DM49 (SPASIBAIII) * Basis: Dmitry Mendeleev * Method/Device: Bottle, Niskin (NIS)
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 | Elevation of event | Elevation | m | |||
| 5 | Date/Time of event | Date/Time | ||||
| 6 | Primary production of carbon | PP C | mg/m3/day | Vedernikov, Vladimir I | 14C in-situ incubation | in the surface layer |
| 7 | Primary production of carbon | PP C | mg/m3/day | Vedernikov, Vladimir I | 14C in-situ incubation | in the water column |
| 8 | Chlorophyll total | Chl tot | µg/l | Vedernikov, Vladimir I | Spectrophotometry | concentration in the surface layer |
| 9 | Chlorophyll total | Chl tot | µg/l | Vedernikov, Vladimir I | Spectrophotometry | average concentration in the photosynthesis layer |
| 10 | Chlorophyll total | Chl tot | µg/l | Vedernikov, Vladimir I | Spectrophotometry | average concentration in the water column |
| 11 | Assimilation rate of carbon per chlorophyll a | Assim r C/Chl a | mg/mg/h | Vedernikov, Vladimir I | Calculated | maximal in water column |
| 12 | Depth of the euphotic zone | z(eu) | m | Vedernikov, Vladimir I | Photometry | |
| 13 | Photosynthesis depth | Photosynth depth | m | Vedernikov, Vladimir I | Photometry | |
| 14 | Depth of Secchi Disk | z(SD) | m | Vedernikov, Vladimir I | Secchi disc | |
| 15 | Phosphate | [PO4]3- | µmol/l | Vedernikov, Vladimir I | Auto-analyzer II, Technicon | |
| 16 | Nitrate | [NO3]- | µmol/l | Vedernikov, Vladimir I | Auto-analyzer II, Technicon | + NO2 |
| 17 | Silicon | Si | µmol/l | Vedernikov, Vladimir I | Auto-analyzer II, Technicon | |
| 18 | Temperature, water | Temp | °C | Vedernikov, Vladimir I | CTD, Neil Brown | |
| 19 | Salinity | Sal | Vedernikov, Vladimir I | CTD, Neil Brown | ||
| 20 | Total radiation, photosynthetically active | TPAR | J/cm2 | Vedernikov, Vladimir I | Pyranometer (PYRA) | over the period of flasks exposure (half a light day) |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
450 data points