Reich, Tom (2025): Primal, chemo and bacterial productivety coupled with inorganic nutrient concentrations from an off shore, out going transect cruises [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.975231
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2025-03-06 • DOI registered: 2025-03-10
Abstract:
Here, we report on both photic and aphotic primary productivity, dark carbon fixation and heterotrophic bacterial production rates from 6 cruises conducted in 2021-2023 at the offshore Southeastern Mediterranean Sea at stations covering the continental shelf (seafloor <200m), slope (200-1000m), and the offshore environments (maximum bottom ~1750 m) during the mixed (winter) and stratified (summer) periods. These cruises were conducted as part of the Israeli monitoring program.
Samples where collected at discrete depths for carbon fixation productivity rates. Using a modified NaH14CO3 incorporation method (Nielsen 1952 10.1093/icesjms/18.2.117) we measured net, light (photosynthesis) and dark (chemosynthesis) productivity. Bacterial production was measured using the 3H-leucine incorporation method. Water samples were also collected for inorganic nutrient (Si(OH)4, PO4, NO2, NH4 and NO3) concentration measurements.
These data were collected to better understand how much dark carbon fixation by chemoautotrophs contributes to net production in low nutrient, low chlorophyll areas. The data cover seasonal (summer, winter), spatial (continental, slope and open ocean) and vertical (photic and aphotic depths) to contrast the changes in these parameters for a better view of this dynamic system. All water samples were collected using Niskin bottles. Nutrient concentration were measured with a Seal Analytical AA-3 system, and productivety samples were measured with a TRI-CARB 4810 TR (Packard) liquid scintillation counter.
Keyword(s):
Related to:
Reich, Tom; Belkin, Natalia; Sisma-Ventura, Guy; Berman-Frank, I; Rahav, Eyal (2024): Significant dark inorganic carbon fixation in the euphotic zone of an oligotrophic sea. Limnology and Oceanography, 69(5), 1129-1142, https://doi.org/10.1002/lno.12560
Funding:
Helmholtz Association of German Research Centres (HGF), grant/award no. EMS FORE: Eastern Mediterranean Sea as model region to study future changes in the ocean
Coverage:
Median Latitude: 33.005200 * Median Longitude: 34.591723 * South-bound Latitude: 32.840000 * West-bound Longitude: 33.920000 * North-bound Latitude: 33.350000 * East-bound Longitude: 35.010000
Date/Time Start: 2021-03-09T12:00:00 * Date/Time End: 2023-08-28T18:10:47
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Reich, Tom | |||
| 2 | Cruise/expedition | Expedition | Reich, Tom | |||
| 3 | Station label | Station | Reich, Tom | |||
| 4 | DATE/TIME | Date/Time | Reich, Tom | Geocode | ||
| 5 | LATITUDE | Latitude | Reich, Tom | Geocode | ||
| 6 | LONGITUDE | Longitude | Reich, Tom | Geocode | ||
| 7 | Depth, sampling | Depth sampling | m | Reich, Tom | ||
| 8 | Net primary production of carbon | NPP C | µg/l/day | Reich, Tom | Liquid scintillation counter, Packard, TRI-CARB 4810TR | average |
| 9 | Net primary production of carbon, standard deviation | NPP C std dev | ± | Reich, Tom | ||
| 10 | Dark primary production of carbon | DPP C | µg/l/day | Reich, Tom | Liquid scintillation counter, Packard, TRI-CARB 4810TR | average |
| 11 | Dark primary production of carbon, standard deviation | DPP C std dev | ± | Reich, Tom | ||
| 12 | Light primary production of carbon | LPP C | µg/l/day | Reich, Tom | Liquid scintillation counter, Packard, TRI-CARB 4810TR | average |
| 13 | Bacterial production as carbon | BP C | µg/l/day | Reich, Tom | Liquid scintillation counter, Packard, TRI-CARB 4810TR | |
| 14 | Bacterial production as carbon, standard deviation | BP C | ± | Reich, Tom | ||
| 15 | Silicic acid | Si(OH)4 | µmol/l | Reich, Tom | SEAL Analytical, AutoAnalyzer 3 HR (AA3 HR), XY-2 Sampler | |
| 16 | Phosphate | [PO4]3- | µmol/l | Reich, Tom | SEAL Analytical, AutoAnalyzer 3 HR (AA3 HR), XY-2 Sampler | |
| 17 | Nitrogen oxide | NOx | µmol/l | Reich, Tom | SEAL Analytical, AutoAnalyzer 3 HR (AA3 HR), XY-2 Sampler | |
| 18 | Nitrogen dioxide | NO2 | µmol/l | Reich, Tom | SEAL Analytical, AutoAnalyzer 3 HR (AA3 HR), XY-2 Sampler | |
| 19 | Ammonium | [NH4]+ | µmol/l | Reich, Tom | SEAL Analytical, AutoAnalyzer 3 HR (AA3 HR), XY-2 Sampler | |
| 20 | Nitrate | [NO3]- | µmol/l | Reich, Tom | SEAL Analytical, AutoAnalyzer 3 HR (AA3 HR), XY-2 Sampler |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
4882 data points
Download Data
View dataset as HTML (shows only first 2000 rows)