Choisnard, Noémie; Böttcher, Michael Ernst; Liskow, Iris; Schmiedinger, Iris; Voss, Maren (2024): Nitrate d15N and d18O, and water d2H and d18O stable isotopes of METEOR cruise M174 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.965429
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
The Amazon River is known as a region of intense biochemical reactivity. As a result of increased anthropogenic impacts in its catchment (e.g. population growth, agriculture, and deforestation), The Amazon River is undergoing fundamental changes. The RV METEOR cruise M174 (doi:10.1594/PANGAEA.935041) aimed to provide an integrated overview of nitrogen cycling processes in areas influenced by the Amazon River, which is crucial to estimate the ecosystem's health and productivity. During this cruise, six stations were visited to explore the significance of denitrification as a dominant pathway in the watercolumn of the Amazon and Pará estuaries. This dataset presents the stable isotopic composition of nitrate (d15N- d18O-NO3), as well as d2H and d18O of ambient water.
Keyword(s):
Supplement to:
Choisnard, Noémie; Umbricht, Jacqueline; Araujo, Moacyr; Böttcher, Michael Ernst; Burmeister, Christian; Liskow, Iris; Schmiedinger, Iris; Voss, Maren (accepted): Nitrogen assimilation and recycling in surface waters of the Amazon and Pará Estuaries. Journal of Geophysical Research: Oceans
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 439440452: Metabolismus des Stickstoffs in der Amazonasfahne und dem westlichen, tropischen Nordatlantik (MeNARP)
Coverage:
Median Latitude: 0.661243 * Median Longitude: -48.371965 * South-bound Latitude: -0.597550 * West-bound Longitude: -48.839570 * North-bound Latitude: 1.612580 * East-bound Longitude: -47.731100
Date/Time Start: 2021-04-23T06:27:57 * Date/Time End: 2021-04-27T11:40:39
Minimum Elevation: -36.0 m * Maximum Elevation: -14.0 m
Event(s):
M174_9-2 * Latitude: -0.121680 * Longitude: -47.731100 * Date/Time: 2021-04-23T06:27:57 * Elevation: -36.0 m * Location: South Atlantic Ocean * Campaign: M174 * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M174_10-2 * Latitude: -0.597550 * Longitude: -48.260520 * Date/Time: 2021-04-23T15:16:37 * Elevation: -14.0 m * Location: South Atlantic Ocean * Campaign: M174 * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
M174_12-2 * Latitude: 0.596830 * Longitude: -48.373770 * Date/Time: 2021-04-24T11:30:01 * Elevation: -15.0 m * Location: South Atlantic Ocean * Campaign: M174 * Basis: Meteor (1986) * Method/Device: CTD/Rosette (CTD-RO)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
60 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Date/Time | 5 Temp [°C] | 6 Sal | 7 [NO3]- [µmol/l] | 8 NO3 std dev [±] | 9 δ15N NO3 [‰ air] | 10 δ15N NO3 std dev [±] | 11 δ18O NO3 [‰] | 12 δ18O NO3 std dev [±] | 13 δ18O H2O [‰ SMOW] | 14 δ18O H2O std dev [±] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M174_9-2 | -0.1217 | -47.7311 | 2021-04-23T06:27:57 | 27.5 | 3.7 | 12.1 | 0.0 | 3.7 | 0.2 | 1.8 | 0.2 | -4.5 | 0.0 |
| M174_10-2 | -0.5976 | -48.2605 | 2021-04-23T15:16:37 | 29.0 | 0.9 | 9.7 | 0.0 | 4.0 | 0.2 | 0.0 | 0.2 | -3.9 | 0.0 |
| M174_12-2 | 0.5968 | -48.3738 | 2021-04-24T11:30:01 | 28.6 | 4.6 | 12.3 | 0.8 | 5.1 | 0.1 | -0.9 | 0.1 | -5.0 | 0.0 |
| M174_13-3 | 1.0499 | -48.5844 | 2021-04-24T17:19:32 | 28.3 | 0.9 | 19.7 | 1.7 | 3.4 | 0.0 | -4.0 | 0.3 | -5.4 | 0.0 |
| M174_14-2 | 1.6126 | -48.8396 | 2021-04-25T00:21:48 | 28.1 | 0.5 | 8.2 | 0.3 | 3.6 | 0.2 | -0.5 | 1.0 | -5.3 | 0.1 |
| M174_17-16 | 1.4273 | -48.4425 | 2021-04-27T11:40:39 | 29.0 | 8.3 | 9.0 | 0.0 | 4.1 | 0.2 | -2.1 | 0.2 | -4.6 | 0.1 |