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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 (2024): Water nitrate and coral skeleton nitrogen isotopes at Surprise Island (New Caledonia), Tromelin and Grand Glorieuse Island (Western Indian Ocean) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971264

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Abstract:
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.
Keyword(s):
Coral; Nitrate isotopes; nitrogen isotopes; oxygen isotopes
Related to:
Choisnard, Noémie; Duprey, Nicolas N; Wald, Tanja; Thibault, Martin; Houlbrèque, Fanny; Foreman, Alan; Cuet, Pascale; Guillaume, Mireille M M; Vonhof, Hubert B; Sigman, Daniel M; Haug, Gerald H; Maguer, Jean‐François; L'Helguen, Stéphane; Martínez‐García, Alfredo; Lorrain, Anne (2024): Tracing the fate of seabird‐derived nitrogen in a coral reef using nitrate and coral skeleton nitrogen isotopes. Limnology and Oceanography, 69(2), 309-324, https://doi.org/10.1002/lno.12485
Project(s):
Priority Programme SPP 2299: Tropical Climate Variability and Coral Reefs (SPP2299)
Funding:
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 441832482: SPP 2299: Tropical Climate Variability and Coral Reefs. A Past to Future Perspective on Current Rates of Change at Ultra-High Resolution
Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 468591845: The marine Nitrogen cycle in a warming world: Evidence from the past, lessons for the Anthropocene (NITROCENE)
Coverage:
Median Latitude: -18.179240 * Median Longitude: 155.354124 * South-bound Latitude: -18.592667 * West-bound Longitude: 47.300000 * North-bound Latitude: -11.583000 * East-bound Longitude: 163.167917
Date/Time Start: 2019-04-24T00:00:00 * Date/Time End: 2019-07-09T00:30:00
Minimum DEPTH, water: 0.0 m * Maximum DEPTH, water: 500.0 m
Event(s):
Alis_atoll_rim (atoll rim)  * Latitude: -18.514667 * Longitude: 163.167917 * Date/Time: 2019-07-08T00:00:00 * Location: Surprise Island, New Caledonia * Campaign: IGUANE * Basis: Alis * Method/Device: Manual analysis
Alis_CTD-10 (CTD-10 m)  * Latitude: -18.592667 * Longitude: 163.070717 * Date/Time: 2019-07-04T00:00:00 * Location: Surprise Island, New Caledonia * Campaign: IGUANE * Basis: Alis * Method/Device: CTD
Alis_CTD-100 (CTD-100 m (STUW, Ocean End member))  * Latitude: -18.592667 * Longitude: 163.070717 * Date/Time: 2019-07-04T00:00:00 * Location: Surprise Island, New Caledonia * Campaign: IGUANE * Basis: Alis * Method/Device: CTD
Comment:
Further funding information:
* Guano's influence on the functioning of coral ecosystems (IGUANE, https://www-iuem.univ-brest.fr/lemar/projets-scientifiques/iguane/?lang=en)
* Guano influence on coral reef functioning (GUANACO)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventChoisnard, Noémie
2 Optional event labelEvent 2Choisnard, Noémie
3 Latitude of eventLatitudeChoisnard, Noémie
4 Longitude of eventLongitudeChoisnard, Noémie
5 Location of eventLocationChoisnard, Noémie
6 Date/Time localDate/Time localChoisnard, Noémie
7 DATE/TIMEDate/TimeChoisnard, NoémieGeocode
8 DEPTH, waterDepth watermChoisnard, NoémieGeocode
9 Depth, descriptionDepth descChoisnard, Noémie
10 DistanceDistancemChoisnard, NoémieTransect distance
11 UreaUreaµmol/lChoisnard, Noémie
12 Urea, standard deviationUrea std dev±Choisnard, NoémieCalculated
13 Ammonium[NH4]+µmol/lChoisnard, Noémie
14 Ammonium, standard deviation[NH4]+ std dev±Choisnard, NoémieCalculated
15 Nitrate[NO3]-µmol/lChoisnard, Noémie
16 Nitrate, standard deviationNO3 std dev±Choisnard, NoémieCalculated
17 δ15N, nitrateδ15N NO3‰ airChoisnard, Noémie
18 δ15N, nitrate, standard deviationδ15N NO3 std dev±Choisnard, NoémieCalculated
19 δ18O, nitrateδ18O NO3‰Choisnard, NoémieDenitrifier method according to Weigand et al. (2016)vs VSMOW
20 δ18O, nitrate, standard deviationδ18O NO3 std dev±Choisnard, NoémieCalculatedvs VSMOW
21 δ15N, nitrite + nitrateδ15N NO2+NO3‰ airChoisnard, NoémieDenitrifier method according to Weigand et al. (2016)
22 δ15N, nitrite + nitrate, standard deviationδ15N NO2+NO3 std dev±Choisnard, NoémieCalculated
23 δ18O, nitrite + nitrateδ18O NO2+NO3‰ SMOWChoisnard, NoémieDenitrifier method according to Weigand et al. (2016)
24 δ18O nitrite + nitrate, standard deviationδ18O NO2+NO3 std dev±Choisnard, NoémieCalculated
25 δ18O, waterδ18O H2O‰ SMOWChoisnard, NoémieMass spectrometer, Thermo Delta V equipped with a GASBENCH II
26 δ18O, water, standard deviationδ18O H2O std dev±Choisnard, NoémieMass spectrometer, Thermo Delta V equipped with a GASBENCH II
27 FractionFrac%Choisnard, NoémieCalculated
28 FractionFrac%Choisnard, NoémieCalculated
29 Nitrogen, totalTNµmol/gChoisnard, NoémiePersulfate-denitrifier method according to Moretti et al. (2023)CS-N-content (±0.2)
30 δ15Nδ15N‰Choisnard, NoémiePersulfate-denitrifier method according to Moretti et al. (2023)CS-d15N (‰)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
428 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Event 2		3 
Latitude		4 
Longitude		5 
Location		6 
Date/Time local		7 
Date/Time		8 
Depth water [m]		9 
Depth desc		10 
Distance [m]
(Transect distance)		11 
Urea [µmol/l]		12 
Urea std dev [±]
(Calculated)		13 
[NH4]+ [µmol/l]		14 
[NH4]+ std dev [±]
(Calculated)		15 
[NO3]- [µmol/l]		16 
NO3 std dev [±]
(Calculated)		17 
δ15N NO3 [‰ air]		18 
δ15N NO3 std dev [±]
(Calculated)		19 
δ18O NO3 [‰]
(vs VSMOW, Denitrifier method ...)		20 
δ18O NO3 std dev [±]
(vs VSMOW, Calculated)		21 
δ15N NO2+NO3 [‰ air]
(Denitrifier method according ...)		22 
δ15N NO2+NO3 std dev [±]
(Calculated)		23 
δ18O NO2+NO3 [‰ SMOW]
(Denitrifier method according ...)		24 
δ18O NO2+NO3 std dev [±]
(Calculated)		25 
δ18O H2O [‰ SMOW]
(Mass spectrometer, Thermo Del...)		26 
δ18O H2O std dev [±]
(Mass spectrometer, Thermo Del...)		27 
Frac [%]
(Calculated)		28 
Frac [%]
(Calculated)		29 
TN [µmol/g]
(CS-N-content (±0.2), Persulfa...)		30 
δ15N [‰]
(CS-d15N (‰), Persulfate-denit...)
Alis_CTD-10 CTD-10 m-18.5927163.0707Surprise Island, New Caledonia2019-07-04T14:52:002019-07-04T03:52:0010.00.070.010.030.030.030.01
Alis_CTD-100 CTD-100 m (STUW, Ocean End member)-18.5927163.0707Surprise Island, New Caledonia2019-07-04T14:52:002019-07-04T03:52:00100.00.140.100.040.021.220.066.760.048.872.104.720.222.690.460.090.120100
Alis_CTD-200 CTD-200 m-18.5927163.0707Surprise Island, New Caledonia2019-07-04T14:52:002019-07-04T03:52:00200.00.140.056.570.037.100.122.840.136.920.012.520.020.17
Alis_CTD-300 CTD-300 m-18.5927163.0707Surprise Island, New Caledonia2019-07-04T14:52:002019-07-04T03:52:00300.00.090.026.810.036.900.012.930.106.790.032.550.200.14
Alis_CTD-400 CTD-400 m-18.5927163.0707Surprise Island, New Caledonia2019-07-04T14:52:002019-07-04T03:52:00400.00.080.0111.800.107.280.103.840.026.970.043.480.21-0.33
Alis_CTD-500 CTD-500 m-18.5927163.0707Surprise Island, New Caledonia2019-07-04T14:52:002019-07-04T03:52:00500.00.070.0114.900.107.190.043.970.276.980.053.400.24-0.160.05
Alis_Transect1-10 Transect1-10 m-18.4817163.0887Surprise Island, New Caledonia2019-07-06T09:00:002019-07-05T22:00:00100.250.020.154.820.0212.710.143.250.0512.540.182.850.210.340.048614
Alis_Transect1-25 Transect1-25 m-18.4817163.0888Surprise Island, New Caledonia2019-07-06T09:00:002019-07-05T22:00:00250.240.020.120.042.050.0111.640.053.820.2711.190.072.900.090.120.097228
Alis_Transect1-50 Transect1-50 m-18.4817163.0890Surprise Island, New Caledonia2019-07-06T09:00:002019-07-05T22:00:00500.200.110.014.080.0212.250.053.190.2112.010.012.800.170.120.108119
Alis_Transect1-100 Transect1-100 m-18.4815163.0897Surprise Island, New Caledonia2019-07-06T09:00:002019-07-05T22:00:001000.240.020.120.052.700.0111.550.103.450.4811.240.082.580.140.420.017228
Alis_Transect1-200 Transect1-200 m-18.4813163.0906Surprise Island, New Caledonia2019-07-06T09:00:002019-07-05T22:00:002000.200.010.140.041.060.017.870.123.210.747.360.071.380.100.190.272971
Alis_Transect1-400 Transect1-400 m-18.4812163.0926Surprise Island, New Caledonia2019-07-06T09:00:002019-07-05T22:00:004000.190.040.070.040.130.019.520.689.351.288.500.724.470.060.300.094258
Alis_Transect2-10 Transect2-10 m-18.4817163.0887Surprise Island, New Caledonia2019-07-09T07:32:002019-07-08T20:32:00100.360.100.550.052.040.4911.380.134.600.2811.050.203.510.510.150.057030
Alis_Transect2-25 Transect2-25 m-18.4817163.0888Surprise Island, New Caledonia2019-07-09T07:32:002019-07-08T20:32:00250.130.020.130.025.650.5413.830.043.720.0913.490.063.430.080.150.08973
Alis_Transect2-50 Transect2-50 m-18.4817163.0890Surprise Island, New Caledonia2019-07-09T07:32:002019-07-08T20:32:00500.130.020.230.142.360.0113.260.254.520.1812.840.103.740.250.110.019010
Alis_Transect2-100 Transect2-100 m-18.4815163.0897Surprise Island, New Caledonia2019-07-09T07:32:002019-07-08T20:32:001000.100.010.160.040.640.018.910.113.850.958.500.352.070.660.100.014258
Alis_Transect2-200 Transect2-200 m-18.4813163.0906Surprise Island, New Caledonia2019-07-09T07:32:002019-07-08T20:32:002000.250.050.130.620.014.700.112.571.014.350.190.170.270.140.020100
Alis_Transect2-400 Transect2-400 m-18.4812163.0926Surprise Island, New Caledonia2019-07-09T07:32:002019-07-08T20:32:004000.160.030.060.010.270.017.310.439.330.395.351.536.780.480.120.06793
Alis_atoll_rim atoll rim-18.5147163.1679Surprise Island, New Caledonia2019-07-08T14:20:002019-07-08T03:20:001.240.180.160.010.500.015.760.152.500.404.820.150.000.110.120.010100
Alis_Groundwater1 Groundwater1-18.4794163.0862Surprise Island, New Caledonia2019-07-07T09:24:002019-07-06T22:24:001.590.192.390.5736978.00527.0013.720.054.110.2613.770.043.980.17-3.260.201000
Alis_Groundwater2 Groundwater2-18.4794163.0862Surprise Island, New Caledonia2019-07-09T11:30:002019-07-09T00:30:001.320.040.860.0133881.0013.760.013.700.1313.760.013.530.08-3.300.081000
MD_Groundwater3 Groundwater3-15.887054.5160Tromelin Island, Mozambique Channel2019-04-27T00:00:002019-04-27T00:00:002486.0040.0016.400.015.9915.970.616.430.61-4.341.36
MD_Groundwater4 Groundwater4-11.583047.3000Grande Glorieuse Island, Mozambique Channel2019-04-24T00:00:002019-04-24T00:00:008.130.0410.230.015.270.0510.000.085.160.32-2.81
Alis_SU19-1 SU19-1-18.4816163.0889Surprise Island, New Caledonia2019-07-05T00:00:002019-07-05T00:00:000.0Surface252.31301729511.230385010
Alis_SU19-2 SU19-2-18.4816163.0888Surprise Island, New Caledonia2019-07-05T00:00:002019-07-05T00:00:000.0Surface252.60932370510.245685680
Alis_SU19-3 SU19-3-18.4814163.0888Surprise Island, New Caledonia2019-07-05T00:00:002019-07-05T00:00:000.0Surface252.39878495610.419171740
Alis_SU19-4 SU19-4-18.4816163.0889Surprise Island, New Caledonia2019-07-05T00:00:002019-07-05T00:00:000.0Surface252.55713368910.150604530
Alis_SU19-6 SU19-6-18.4792163.0887Surprise Island, New Caledonia2019-07-05T00:00:002019-07-05T00:00:005.02001.8835589117.002708786
Alis_SU19-5 SU19-5-18.5149163.1661Surprise Island, New Caledonia2019-07-05T00:00:002019-07-05T00:00:006.56-7m1.5817774194.323112210