Water nitrate and coral skeleton nitrogen isotopes at Surprise Island (New Caledonia), Tromelin and Grand Glorieuse Island (Western Indian Ocean)
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PANGAEA
2024
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| author | Choisnard, Noémie Duprey, Nicolas N Wald, Tanja Thibault, Martin Houlbrèque, Fanny Foreman, Alan Cuet, Pascale Guillaume, Mireille M Vonhof, Hubert B Sigman, Daniel M Haug, Gerald H Maguer, Jean-François L'Helguen, Stéphane Martínez-García, Alfredo Lorrain, Anne |
| author_facet | Choisnard, Noémie Duprey, Nicolas N Wald, Tanja Thibault, Martin Houlbrèque, Fanny Foreman, Alan Cuet, Pascale Guillaume, Mireille M Vonhof, Hubert B Sigman, Daniel M Haug, Gerald H Maguer, Jean-François L'Helguen, Stéphane Martínez-García, Alfredo Lorrain, Anne |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | This dataset presents data collected along a transect sampled on two dates (6th and 9th of July 2019) on the reef flat of Surprise Island in the D'entrecasteaux Reefs, from land to ocean during the IGUANE cruise. Samples were also collected in the groundwater lens of the island and in the water column offshore of the island. As a comparison, the grounwater lens from two other tropical coral islands from the Western Indian Ocean (Tromelin and Grande Glorieuse) was also sampled, in April 2019 on the occasion of the Climate Eparses and CLIM-EPARSE programs. Urea, ammonium and nitrate concentrations were analyzed. Nitrate plus nitrite and nitrate δ15N (vs. AIR) and δ18O (vs. VSMOW) measurements have been performed using the denitrifier method (Weigand et al., 2016; doi:10.1002/rcm.7570) on seawater and groundwater samples from the IGUANE expedition (2019; doi:10.17600/18000897). Samples for nitrate δ15N (vs. AIR) and δ18O were treated with sulfamic acid before isotope analysis (Granger and Sigman, 2009; doi:10.1002/rcm.4307). This dataset also includes values of nitrogen isotopic composition of coral (Porites) skeleton-bound organic matter. The fraction of groundwater and oceanic water explaining the nitrogen isotopic composition of nitrate along the transects is also given, in percent. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_971264 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Water nitrate and coral skeleton nitrogen isotopes at Surprise Island (New Caledonia), Tromelin and Grand Glorieuse Island (Western Indian Ocean) Choisnard, Noémie Duprey, Nicolas N Wald, Tanja Thibault, Martin Houlbrèque, Fanny Foreman, Alan Cuet, Pascale Guillaume, Mireille M Vonhof, Hubert B Sigman, Daniel M Haug, Gerald H Maguer, Jean-François L'Helguen, Stéphane Martínez-García, Alfredo Lorrain, Anne Alis; Alis_atoll_rim; Alis_CTD-10; Alis_CTD-100; Alis_CTD-200; Alis_CTD-300; Alis_CTD-400; Alis_CTD-500; Alis_Groundwater1; Alis_Groundwater2; Alis_SU19-1; Alis_SU19-2; Alis_SU19-3; Alis_SU19-4; Alis_SU19-5; Alis_SU19-6; Alis_Transect1-10; Alis_Transect1-100; Alis_Transect1-200; Alis_Transect1-25; Alis_Transect1-400; Alis_Transect1-50; Alis_Transect2-10; Alis_Transect2-100; Alis_Transect2-200; Alis_Transect2-25; Alis_Transect2-400; Alis_Transect2-50; Ammonium; Ammonium, standard deviation; atoll rim; Calculated; CLIM-EPARSES; Coral; CTD; CTD-100 m (STUW, Ocean End member); CTD-10 m; CTD-200 m; CTD-300 m; CTD-400 m; CTD-500 m; DATE/TIME; Date/Time local; Denitrifier method according to Weigand et al. (2016); Depth, description; DEPTH, water; Distance; Drilling/coring; Event label; Fraction; Grande Glorieuse Island, Mozambique Channel; Groundwater1; Groundwater2; Groundwater3; Groundwater4; IGUANE; Latitude of event; Location of event; Longitude of event; Manual analysis; Marion Dufresne (1995); Mass spectrometer, Thermo Delta V equipped with a GASBENCH II; MD_Groundwater3; MD_Groundwater4; Nitrate; Nitrate, standard deviation; Nitrate isotopes; Nitrogen, total; nitrogen isotopes; Optional event label; Oxygen isotopes; Persulfate-denitrifier method according to Moretti et al. (2023); Priority Programme SPP 2299: Tropical Climate Variability and Coral Reefs; SPP2299; SU19-1; SU19-2; SU19-3; SU19-4; SU19-5; SU19-6; Surprise Island, New Caledonia; Transect1-100 m; Transect1-10 m; Transect1-200 m; Transect1-25 m; Transect1-400 m; Transect1-50 m; Transect2-100 m; Transect2-10 m; Transect2-200 m; Transect2-25 m; Transect2-400 m; Transect2-50 m; Tromelin Island, Mozambique Channel; Urea; Urea, standard deviation; δ15N; δ15N, nitrate; δ15N, nitrate, standard deviation; δ15N, nitrite + nitrate; δ15N, nitrite + nitrate, standard deviation; δ18O, nitrate; δ18O, nitrate, standard deviation; δ18O, nitrite + nitrate; δ18O, water; δ18O, water, standard deviation; δ18O nitrite + nitrate, standard deviation This dataset presents data collected along a transect sampled on two dates (6th and 9th of July 2019) on the reef flat of Surprise Island in the D'entrecasteaux Reefs, from land to ocean during the IGUANE cruise. Samples were also collected in the groundwater lens of the island and in the water column offshore of the island. As a comparison, the grounwater lens from two other tropical coral islands from the Western Indian Ocean (Tromelin and Grande Glorieuse) was also sampled, in April 2019 on the occasion of the Climate Eparses and CLIM-EPARSE programs. Urea, ammonium and nitrate concentrations were analyzed. Nitrate plus nitrite and nitrate δ15N (vs. AIR) and δ18O (vs. VSMOW) measurements have been performed using the denitrifier method (Weigand et al., 2016; doi:10.1002/rcm.7570) on seawater and groundwater samples from the IGUANE expedition (2019; doi:10.17600/18000897). Samples for nitrate δ15N (vs. AIR) and δ18O were treated with sulfamic acid before isotope analysis (Granger and Sigman, 2009; doi:10.1002/rcm.4307). This dataset also includes values of nitrogen isotopic composition of coral (Porites) skeleton-bound organic matter. The fraction of groundwater and oceanic water explaining the nitrogen isotopic composition of nitrate along the transects is also given, in percent. |
| title | Water nitrate and coral skeleton nitrogen isotopes at Surprise Island (New Caledonia), Tromelin and Grand Glorieuse Island (Western Indian Ocean) |
| topic | Alis; Alis_atoll_rim; Alis_CTD-10; Alis_CTD-100; Alis_CTD-200; Alis_CTD-300; Alis_CTD-400; Alis_CTD-500; Alis_Groundwater1; Alis_Groundwater2; Alis_SU19-1; Alis_SU19-2; Alis_SU19-3; Alis_SU19-4; Alis_SU19-5; Alis_SU19-6; Alis_Transect1-10; Alis_Transect1-100; Alis_Transect1-200; Alis_Transect1-25; Alis_Transect1-400; Alis_Transect1-50; Alis_Transect2-10; Alis_Transect2-100; Alis_Transect2-200; Alis_Transect2-25; Alis_Transect2-400; Alis_Transect2-50; Ammonium; Ammonium, standard deviation; atoll rim; Calculated; CLIM-EPARSES; Coral; CTD; CTD-100 m (STUW, Ocean End member); CTD-10 m; CTD-200 m; CTD-300 m; CTD-400 m; CTD-500 m; DATE/TIME; Date/Time local; Denitrifier method according to Weigand et al. (2016); Depth, description; DEPTH, water; Distance; Drilling/coring; Event label; Fraction; Grande Glorieuse Island, Mozambique Channel; Groundwater1; Groundwater2; Groundwater3; Groundwater4; IGUANE; Latitude of event; Location of event; Longitude of event; Manual analysis; Marion Dufresne (1995); Mass spectrometer, Thermo Delta V equipped with a GASBENCH II; MD_Groundwater3; MD_Groundwater4; Nitrate; Nitrate, standard deviation; Nitrate isotopes; Nitrogen, total; nitrogen isotopes; Optional event label; Oxygen isotopes; Persulfate-denitrifier method according to Moretti et al. (2023); Priority Programme SPP 2299: Tropical Climate Variability and Coral Reefs; SPP2299; SU19-1; SU19-2; SU19-3; SU19-4; SU19-5; SU19-6; Surprise Island, New Caledonia; Transect1-100 m; Transect1-10 m; Transect1-200 m; Transect1-25 m; Transect1-400 m; Transect1-50 m; Transect2-100 m; Transect2-10 m; Transect2-200 m; Transect2-25 m; Transect2-400 m; Transect2-50 m; Tromelin Island, Mozambique Channel; Urea; Urea, standard deviation; δ15N; δ15N, nitrate; δ15N, nitrate, standard deviation; δ15N, nitrite + nitrate; δ15N, nitrite + nitrate, standard deviation; δ18O, nitrate; δ18O, nitrate, standard deviation; δ18O, nitrite + nitrate; δ18O, water; δ18O, water, standard deviation; δ18O nitrite + nitrate, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.971264 |