Vedernikov, Vladimir I; Demidov, A B; Korneeva, Galina A (1996): Phytoplankton production characteristics and rate of enzyme hydrolysis in the Black Sea in autumn 1992 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.759840, Supplement to: Vedernikov, VI et al. (1996): Some features of distribution of phytoplankton production characteristics and rate of hydrolysis of natural polymers in the Black Sea in autumn. Qceanology (Translated from Okeanologiya, 1996, 36(2), 250-259), 36(2), 231-240
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Primary production in the water column (P_p) and average chlorophyll "a" content in the photo¬synthesis layer (C_chl) varied within the following ranges: 100-370 mg C/m**2 per day and 0.46-0.66 mg/m**3 in central regions of the sea; 320-500 mg C/m**2 per day and 0.58-0.87 mg/m**3 in regions of the continental slope; 570-1200 mg of C/m**2 per day and 2.7-4.9 mg/m**3 in the northwestern shelf. Potential rate of extra¬cellular enzyme hydrolysis of proteins and polysaccharides estimated from total proteolytic and amylolytic enzyme activities (EA) in the photosynthesis layer varied from 210 to 370 e.u./l (enzyme units per liter) in the eutrophic northwestern shelf and from 14 to 100 e.u./l in deepwater mesotrophic regions of the sea. Spatial variability of P_p in the open sea was governed largely by fluctuations of insolation. Autumn rearrangement of the vertical structure of phytocene and simultaneous EA decrease in the uppermost mixed layer started in western parts of the sea and gradually expanded to the east. Analysis of light curves of photosynthesis indicates ability of phytoplankton for rapid light adaptation. Reliable positive correlations between EA and values of P_p, C_chl, and assimilation number are established.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 43.938205 * Median Longitude: 34.943590 * South-bound Latitude: 42.333333 * West-bound Longitude: 30.000000 * North-bound Latitude: 45.716667 * East-bound Longitude: 39.416667
Date/Time Start: 1992-09-28T00:00:00 * Date/Time End: 1992-10-14T00:00:00
Event(s):
Vy26-3785 * Latitude: 44.450000 * Longitude: 37.916667 * Date/Time: 1992-09-28T00:00:00 * Elevation: -1300.0 m * Location: Black Sea * Method/Device: Transparent bottle 150L (TRANS150)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Vedernikov, VI; Demidov, AB; Korneeva, GA (1996): (Table 1) Hydrophysical and hydrochemical parameters of Black Sea waters important for phytoplankton production measured in autumn 1992. https://doi.org/10.1594/PANGAEA.759838
- Vedernikov, VI; Demidov, AB (1996): (Table 2) Hydrolytic enzyme activity and some production characteristics of phytoplankton in the Black Sea in autumn 1992. https://doi.org/10.1594/PANGAEA.759839