Kiko, Rainer; Hauss, Helena; Löscher, Carolin R; Engel, Anja; Loginova, Alexandra; Meyer, Judith (2015): Mesocosm experiment Cape Verde 2012: Setup [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.855440
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Abstract:
Two 7-day mesocosm experiments were conducted in October 2012 at the Instituto Nacional de Desenvolvimento das Pescas (INDP), Mindelo, Cape Verde. Surface water was collected at night before the start of the respective experiment with RV Islândia south of São Vicente (16°44.4'N, 25°09.4'W) and transported to shore using four 600L food safe intermediate bulk containers. Sixteen mesocosm bags were distributed in four flow-through water baths and shaded with blue, transparent lids to approximately 20% of surface irradiation. Mesocosm bags were filled from the containers by gravity, using a submerged hose to minimize bubbles. The accurate volume inside the individual bags was calculated after addition of 1.5 mmol silicate and measuring the resulting silicate concentration. The volume ranged from 105.5 to 145 L. The experimental manipulation comprised addition of different amounts of inorganic N and P. In the first experiment, the P supply was changed at constant N supply in thirteen of the sixteen units, while in the second experiment the N supply was changed at constant P supply in twelve of the sixteen units. In addition to this, “cornerpoints” were chosen that were repeated during both experiments. Four cornerpoints should have been repeated, but setting the nutrient levels in one mesocosm was not succesfull and therefore this mesocosm also was set at the center point conditions. Experimental treatments were evenly distributed between the four water baths. Initial sampling of the mesocosms on day 1 of each run was conducted between 9:45 and 11:30. After nutrient manipulation, sampling was conducted on a daily basis between 09:00 and 10:30 for days 2 to 8.
Related to:
Engel, Anja; Borchard, Corinna; Loginova, Alexandra; Meyer, Judith; Hauss, Helena; Kiko, Rainer (2015): Effects of varied nitrate and phosphate supply on polysaccharidic and proteinaceous gel particle production during tropical phytoplankton bloom experiments. Biogeosciences, 12(19), 5647-5665, https://doi.org/10.5194/bg-12-5647-2015
Loginova, Alexandra; Borchard, Corinna; Meyer, Judith; Hauss, Helena; Kiko, Rainer; Engel, Anja (2015): Effects of nitrate and phosphate supply on chromophoric and fluorescent dissolved organic matter in the Eastern Tropical North Atlantic: a mesocosm study. Biogeosciences, 12(23), 6897-6914, https://doi.org/10.5194/bg-12-6897-2015
Meyer, Judith; Löscher, Carolin R; Neulinger, Sven C; Reichel, Anna; Loginova, Alexandra; Borchard, Corinna; Schmitz, Ruth A; Hauss, Helena; Kiko, Rainer; Riebesell, Ulf (2016): Changing nutrient stoichiometry affects phytoplankton production, DOP accumulation and dinitrogen fixation – a mesocosm experiment in the eastern tropical North Atlantic. Biogeosciences, 13(3), 781-794, https://doi.org/10.5194/bg-13-781-2016
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 27542298: Climate - Biogeochemistry Interactions in the Tropical Ocean
Coverage:
Latitude: 16.740000 * Longitude: -25.156600
Date/Time Start: 2012-10-01T00:00:00 * Date/Time End: 2012-10-12T00:00:00
Minimum Elevation: -5.0 m * Maximum Elevation: -5.0 m
Event(s):
CapeVerde_2012_Mesocosm * Latitude: 16.740000 * Longitude: -25.156600 * Date/Time Start: 2012-10-01T00:00:00 * Date/Time End: 2012-10-12T00:00:00 * Elevation: -5.0 m * Location: Cape Verde * Method/Device: Mesocosm experiment (MESO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Identification | ID | Kiko, Rainer | Set_Up_Index | ||
| 2 | Run ID | Run ID | Kiko, Rainer | |||
| 3 | Sample code/label | Sample label | Kiko, Rainer | Mesocosm ID | ||
| 4 | Sample code/label | Sample label | Kiko, Rainer | Tank | ||
| 5 | Treatment | Treat | Kiko, Rainer | |||
| 6 | Nitrate | [NO3]- | µmol/l | Kiko, Rainer | nominal | |
| 7 | Phosphate | [PO4]3- | µmol/l | Kiko, Rainer | nominal | |
| 8 | Silicate | Si(OH)4 | µmol/l | Kiko, Rainer | nominal | |
| 9 | Nitrogen/Phosphorus ratio | N/P | Kiko, Rainer | nominal | ||
| 10 | Volume | Vol | l | Kiko, Rainer | initial | |
| 11 | Phosphate | [PO4]3- | µmol/l | Kiko, Rainer | after manipulation | |
| 12 | Phosphate, standard deviation | [PO4]3- std dev | ± | Kiko, Rainer | after manipulation | |
| 13 | Nitrate and Nitrite | [NO3]- + [NO2]- | µmol/l | Kiko, Rainer | after manipulation | |
| 14 | Nitrate and Nitrite, standard deviation | [NO3]- + [NO2]- std dev | ± | Kiko, Rainer | after manipulation | |
| 15 | Nitrite | [NO2]- | µmol/l | Kiko, Rainer | after manipulation | |
| 16 | Nitrite, standard deviation | [NO2]- std dev | ± | Kiko, Rainer | after manipulation | |
| 17 | Silicate | Si(OH)4 | µmol/l | Kiko, Rainer | after manipulation | |
| 18 | Silicate, standard deviation | Si(OH)4 std dev | ± | Kiko, Rainer | after manipulation | |
| 19 | Nitrogen/Phosphorus ratio | N/P | Kiko, Rainer | after manipulation |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
586 data points
Data
| 1 ID (Set_Up_Index) | 2 Run ID | 3 Sample label (Mesocosm ID) | 4 Sample label (Tank) | 5 Treat | 6 [NO3]- [µmol/l] (nominal) | 7 [PO4]3- [µmol/l] (nominal) | 8 Si(OH)4 [µmol/l] (nominal) | 9 N/P (nominal) | 10 Vol [l] (initial) | 11 [PO4]3- [µmol/l] (after manipulation) | 12 [PO4]3- std dev [±] (after manipulation) | 13 [NO3]- + [NO2]- [µmol/l] (after manipulation) | 14 [NO3]- + [NO2]- std dev [±] (after manipulation) | 15 [NO2]- [µmol/l] (after manipulation) | 16 [NO2]- std dev [±] (after manipulation) | 17 Si(OH)4 [µmol/l] (after manipulation) | 18 Si(OH)4 std dev [±] (after manipulation) | 19 N/P (after manipulation) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1_1 | 1 | 1 | D | 1200_0075 | 12.00 | 0.75 | 15 | 16.00 | 119.0 | 0.73 | 11.52 | 0 | 0.03 | 15 | 15.78 | |||
| 1_2 | 1 | 2 | C | 1200_0075 | 12.00 | 0.75 | 15 | 16.00 | 129.5 | 0.68 | 0.05 | 10.97 | 0.61 | 0 | 0.02 | 15 | 0.26 | 16.11 |
| 1_3 | 1 | 3 | B | 1200_0075 | 12.00 | 0.75 | 15 | 16.00 | 107.3 | 0.52 | 0.02 | 10.63 | 0 | 0.02 | 15 | 0.26 | 20.47 | |
| 1_4 | 1 | 4 | A | 0635_0110 | 6.35 | 1.10 | 15 | 5.76 | 125.1 | 1.00 | 0.01 | 5.66 | 0.54 | 0 | 0.01 | 15 | 0.23 | 5.66 |
| 1_5 | 1 | 5 | D | 1765_0040 | 17.65 | 0.40 | 15 | 44.45 | 122.5 | 0.28 | 0.02 | 16.69 | 0.90 | 0 | 0.02 | 15 | 0.24 | 58.97 |
| 1_6 | 1 | 6 | C | 1200_0125 | 12.00 | 1.25 | 15 | 9.60 | 122.1 | 1.14 | 0.02 | 10.74 | 0.78 | 0 | 0.01 | 15 | 0.21 | 9.39 |
| 1_7 | 1 | 7 | B | 1200_0125 | 12.00 | 1.25 | 15 | 9.60 | 115.4 | 1.12 | 0.00 | 11.16 | 0.82 | 0 | 0.00 | 15 | 0.19 | 9.95 |
| 1_8 | 1 | 8 | A | 1200_0125 | 12.00 | 1.25 | 15 | 9.60 | 105.8 | 1.09 | 0.01 | 10.89 | 1.05 | 0 | 0.01 | 15 | 0.20 | 9.97 |
| 1_9 | 1 | 9 | D | 1200_0175 | 12.00 | 1.75 | 15 | 6.86 | 122.0 | 1.57 | 0.02 | 10.55 | 0.91 | 0 | 0.01 | 15 | 0.21 | 6.74 |
| 1_10 | 1 | 10 | C | 1200_0075 | 12.00 | 0.75 | 15 | 16.00 | 131.6 | 0.61 | 0.01 | 10.82 | 0.94 | 0 | 0.02 | 15 | 0.19 | 17.64 |
| 1_11 | 1 | 11 | B | 1200_0175 | 12.00 | 1.75 | 15 | 6.86 | 130.6 | 1.58 | 0.00 | 10.82 | 0.93 | 0 | 0.02 | 15 | 0.22 | 6.86 |
| 1_12 | 1 | 12 | A | 1200_0175 | 12.00 | 1.75 | 15 | 6.86 | 105.5 | 1.53 | 0.01 | 11.07 | 1.15 | 0 | 0.01 | 15 | 0.23 | 7.24 |
| 1_13 | 1 | 13 | D | 1200_0025 | 12.00 | 0.25 | 15 | 48.00 | 138.6 | 0.15 | 0.01 | 11.16 | 0.98 | 0 | 0.03 | 15 | 0.19 | 76.78 |
| 1_14 | 1 | 14 | C | 1200_0025 | 12.00 | 0.25 | 15 | 48.00 | 123.8 | 0.16 | 0.01 | 11.18 | 0.85 | 0 | 0.01 | 15 | 0.20 | 69.80 |
| 1_15 | 1 | 15 | B | 1765_0110 | 17.65 | 1.10 | 15 | 16.00 | 132.1 | 1.01 | 0.00 | 16.90 | 1.14 | 0 | 0.01 | 15 | 0.14 | 16.75 |
| 1_16 | 1 | 16 | A | 1200_0025 | 12.00 | 0.25 | 15 | 48.00 | 128.1 | 0.15 | 0.00 | 11.33 | 0.89 | 0 | 0.01 | 15 | 0.20 | 75.77 |
| 2_1 | 2 | 1 | D | 1200_0075 | 12.00 | 0.75 | 15 | 16.00 | 140.7 | 0.47 | 0.06 | 12.58 | 0.17 | 0 | 0.03 | 15 | 27.00 | |
| 2_2 | 2 | 2 | C | 1200_0075 | 12.00 | 0.75 | 15 | 16.00 | 138.1 | 0.51 | 0.05 | 12.36 | 0 | 0.03 | 14 | 24.32 | ||
| 2_3 | 2 | 3 | B | 1200_0075 | 12.00 | 0.75 | 15 | 16.00 | 137.4 | 0.51 | 0.05 | 12.61 | 0.64 | 0 | 0.03 | 14 | 24.72 | |
| 2_4 | 2 | 4 | A | 0635_0040 | 6.35 | 0.40 | 15 | 15.99 | 135.8 | 0.18 | 0.06 | 6.91 | 0 | 0.03 | 15 | 39.35 | ||
| 2_5 | 2 | 5 | D | 1765_0110 | 17.65 | 1.10 | 15 | 16.05 | 131.1 | 0.79 | 0.05 | 18.43 | 0.23 | 0 | 0.03 | 14 | 23.45 | |
| 2_6 | 2 | 6 | C | 2000_0075 | 20.00 | 0.75 | 15 | 26.67 | 144.7 | 0.47 | 0.07 | 20.57 | 0.02 | 0 | 0.03 | 15 | 43.92 | |
| 2_7 | 2 | 7 | B | 2000_0075 | 20.00 | 0.75 | 15 | 26.67 | 137.3 | 0.45 | 0.04 | 20.60 | 0.06 | 0 | 0.03 | 14 | 45.92 | |
| 2_8 | 2 | 8 | A | 2000_0075 | 20.00 | 0.75 | 15 | 26.67 | 132.3 | 0.45 | 0.04 | 21.90 | 1.41 | 0 | 0.03 | 15 | 48.81 | |
| 2_9 | 2 | 9 | D | 0400_0075 | 4.00 | 0.75 | 15 | 5.33 | 142.4 | 0.45 | 0.01 | 4.62 | 0.57 | 0 | 0.04 | 15 | 10.38 | |
| 2_10 | 2 | 10 | C | 1765_0040 | 17.65 | 0.40 | 15 | 44.46 | 141.5 | 0.22 | 0.10 | 18.47 | 0.35 | 0 | 0.04 | 15 | 84.31 | |
| 2_11 | 2 | 11 | B | 0400_0075 | 4.00 | 0.75 | 15 | 5.33 | 135.1 | 0.47 | 0.04 | 4.49 | 0.62 | 0 | 0.03 | 15 | 9.59 | |
| 2_12 | 2 | 12 | A | 0400_0075 | 4.00 | 0.75 | 15 | 5.33 | 141.1 | 0.49 | 0.04 | 3.99 | 0.08 | 0 | 0.03 | 16 | 8.17 | |
| 2_13 | 2 | 13 | D | 0200_0075 | 2.00 | 0.75 | 15 | 2.67 | 140.9 | 0.46 | 0.04 | 2.06 | 0.09 | 0 | 0.03 | 16 | 4.52 | |
| 2_14 | 2 | 14 | C | 0600_0103 | 6.35 | 1.10 | 15 | 5.77 | 144.6 | 0.78 | 0.05 | 6.69 | 0.39 | 0 | 0.03 | 15 | 8.55 | |
| 2_15 | 2 | 15 | B | 0200_0075 | 2.00 | 0.75 | 15 | 2.67 | 143.5 | 0.56 | 0.12 | 1.87 | 0.11 | 0 | 0.03 | 18 | 3.33 | |
| 2_16 | 2 | 16 | A | 0200_0075 | 2.00 | 0.75 | 15 | 2.67 | 119.0 | 0.48 | 0.06 | 2.71 | 1.22 | 0 | 0.03 | 15 | 5.60 |