Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Vedernikov, Vladimir I; Gagarin, Vladimir I (2003): (Table 2) Production parameters of phytoplankton and some associated parameters in the area of the Titanic Polygon [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.763231, Supplement to: Vedernikov, VI; Gagarin, VI (2003): Primary production and chlorophyll in the frontal zone of the Gulf Stream and Labrador Current in July-September 2001. Translated from Okeanologiya, 2003, 43(2), 209-218, Oceanology, 43(2), 196-205

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Studies were carried out mostly in the area of RMS Titanic wreck site (41°44'N, 49°57'W) located above the continental slope and the south of the Grand Banks of Newfoundland. In a period from 18.06 to 24.09.2001 five surveys of production characteristics of surface phytoplankton were conducted over 5-9 days. Mean values of these characteristics obtained during the surveys were 9.2-11.7 mg C/m**3 per day for primary production (C_phs), 0.102-0.188 mg/m**3 for chlorophyll a (C_chls), and 4.44-7.42 mg C/mg chl. a per hour for assimilation number (AN). The main reason for low C_phs variability was a significant inverse relationship (R=-0.66) between AN and C_chls found over the research area. When cold shelf waters dominated in the area (27.07 to 19.08.2001), C_chls values for the slope region (0.125+/-0.031 µg/l) and for the outer shelf (0.130+/-0.040 µg/l) were similar. During strengthening of influence of warmer slope waters within area (from 29.08 to 13.09.2001), C_chls concentration within surface waters of the outer shelf was 0.152+/-0.039 µg/l and exceeded one for the slope region (0.094+/-0.004 µg/l) by factor 1.6. Against the background of low Cchls values, the High values of integral primary production in the water column (510-1010 mg C/m**2 per day) at low C_chls values measured within the area were determined both by high assimilation activity of phytoplankton and by the deep (30-40 m) maximum of primary production. Main reasons for formation of such a maximum were high chlorophyll concentration within the layer of the deep chlorophyll maximum (up to 0.5-2.5 µg/l) and in the relatively high solar irradiance within this layer varying from 1.4 to 8.6% of subsurface PAR.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 41.715000 * Median Longitude: -49.922083 * South-bound Latitude: 41.695000 * West-bound Longitude: -49.963333 * North-bound Latitude: 41.740000 * East-bound Longitude: -49.858333
Date/Time Start: 2001-07-21T00:00:00 * Date/Time End: 2001-09-24T00:00:00
Minimum Elevation: -3792.0 m * Maximum Elevation: -3678.0 m
Event(s):
AMK46-4190  * Latitude: 41.740000 * Longitude: -49.956667 * Date/Time: 2001-07-21T00:00:00 * Elevation: -3776.0 m * Location: Northwest Atlantic * Campaign: AMK46 * Basis: Akademik Mstislav Keldysh * Method/Device: Bottle, Niskin 30-L (NIS_30L)
AMK46-4244  * Latitude: 41.730000 * Longitude: -49.963333 * Date/Time: 2001-08-27T00:00:00 * Elevation: -3792.0 m * Location: Northwest Atlantic * Campaign: AMK46 * Basis: Akademik Mstislav Keldysh * Method/Device: Bottle, Niskin 30-L (NIS_30L)
AMK46-4258  * Latitude: 41.695000 * Longitude: -49.910000 * Date/Time: 2001-09-08T00:00:00 * Elevation: -3790.0 m * Location: Northwest Atlantic * Campaign: AMK46 * Basis: Akademik Mstislav Keldysh * Method/Device: Bottle, Niskin 30-L (NIS_30L)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEvent
2 Latitude of eventLatitude
3 Longitude of eventLongitude
4 Elevation of eventElevationm
5 Date/Time of eventDate/Time
6 Primary production of carbonPP Cmg/m3/dayVedernikov, Vladimir I14C in-situ incubationin the surface layer
7 Primary production, integratedPP Cmg/m2/dayVedernikov, Vladimir ICalculated
8 Chlorophyll aChl aµg/lVedernikov, Vladimir IPhotometryin the surface layer
9 Chlorophyll aChl aµg/lVedernikov, Vladimir IPhotometryin the photosynthetic layer, aver.
10 Chlorophyll aChl aµg/lVedernikov, Vladimir IPhotometryin the water column, aver.
11 Assimilation rate of carbon per chlorophyll aAssim r C/Chl amg/mg/hVedernikov, Vladimir ICalculatedmaximum in the water column
12 Assimilation rate of carbon per chlorophyll aAssim r C/Chl amg/mg/hVedernikov, Vladimir ICalculatedin the photosynthetic layer, aver.
13 Productivity indexPsig C/(g Chl a)/EVedernikov, Vladimir ICalculated
14 Photosynthesis layer, thicknessTPhlmVedernikov, Vladimir I
15 Depth of Secchi Diskz(SD)mVedernikov, Vladimir ISecchi disc
16 Radiation, photosynthetically active over a period of a sample exposureEkJ/m2Vedernikov, Vladimir I
17 Temperature, waterTemp°CVedernikov, Vladimir ICTD, Neil Brownin the surface layer
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
48 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Latitude		3 
Longitude		4 
Elevation [m]		5 
Date/Time		6 
PP C [mg/m3/day]
(in the surface layer, 14C in-...)		7 
PP C [mg/m2/day]
(Calculated)		8 
Chl a [µg/l]
(in the surface layer, Photometry)		9 
Chl a [µg/l]
(in the photosynthetic layer, ...)		10 
Chl a [µg/l]
(in the water column, aver., P...)		11 
Assim r C/Chl a [mg/mg/h]
(maximum in the water column, ...)		12 
Assim r C/Chl a [mg/mg/h]
(in the photosynthetic layer, ...)		13 
Psi [g C/(g Chl a)/E]
(Calculated)		14 
TPhl [m]		15 
z(SD) [m]
(Secchi disc)		16 
E [kJ/m2]		17 
Temp [°C]
(in the surface layer, CTD, Ne...)
AMK46-4190 41.740-49.957-37762001-07-219.515110.1360.4930.2424.780.950.387518582615.5
AMK46-4244 41.730-49.963-37922001-08-279.4210060.0840.4040.2268.332.060.889022503819.4
AMK46-4258 41.695-49.910-37902001-09-0810.216260.0800.1920.1019.943.001.418521436319.2
AMK46-4282 41.695-49.858-36782001-09-2417.046870.2150.4020.2106.591.700.678420485817.1