Primal, chemo and bacterial productivety coupled with inorganic nutrient concentrations from an off shore, out going transect cruises
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2025
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| _version_ | 1867171894562652160 |
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| author | Reich, Tom |
| author_facet | Reich, Tom |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_975231 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Primal, chemo and bacterial productivety coupled with inorganic nutrient concentrations from an off shore, out going transect cruises Reich, Tom Ammonium; Bacterial production as carbon; Bacterial production as carbon, standard deviation; Bat Galim; chemoautotrophy; Cruise/expedition; Dark carbon fixation; Dark primary production of carbon; Dark primary production of carbon, standard deviation; DATE/TIME; Depth, sampling; East Mediterranean Sea; Event label; Inorganic nutrients; IOLR-NMP; IOLR-NMP_HS45; IOLR-NMP_HS46; IOLR-NMP_HS47; IOLR-NMP_HS48; IOLR-NMP_HS49; IOLR-NMP_HS50; LATITUDE; Light primary production of carbon; Liquid scintillation counter, Packard, TRI-CARB 4810TR; LONGITUDE; Net primary production of carbon; Net primary production of carbon, standard deviation; Nitrate; Nitrogen dioxide; Nitrogen oxide; Phosphate; primary productivity; SEAL Analytical, AutoAnalyzer 3 HR (AA3 HR), XY-2 Sampler; Silicic acid; Station label 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. |
| title | Primal, chemo and bacterial productivety coupled with inorganic nutrient concentrations from an off shore, out going transect cruises |
| topic | Ammonium; Bacterial production as carbon; Bacterial production as carbon, standard deviation; Bat Galim; chemoautotrophy; Cruise/expedition; Dark carbon fixation; Dark primary production of carbon; Dark primary production of carbon, standard deviation; DATE/TIME; Depth, sampling; East Mediterranean Sea; Event label; Inorganic nutrients; IOLR-NMP; IOLR-NMP_HS45; IOLR-NMP_HS46; IOLR-NMP_HS47; IOLR-NMP_HS48; IOLR-NMP_HS49; IOLR-NMP_HS50; LATITUDE; Light primary production of carbon; Liquid scintillation counter, Packard, TRI-CARB 4810TR; LONGITUDE; Net primary production of carbon; Net primary production of carbon, standard deviation; Nitrate; Nitrogen dioxide; Nitrogen oxide; Phosphate; primary productivity; SEAL Analytical, AutoAnalyzer 3 HR (AA3 HR), XY-2 Sampler; Silicic acid; Station label |
| url | https://doi.org/10.1594/PANGAEA.975231 |