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Rollinson, Veronica R; Granger, Julie; Clark, Sydney C; Blanusa, Mackenzie L; Koerting, Claudia P; Vaudrey, Jamie M P; Treibergs, Lija A; Westbrook, Holly C; Matassa, Catherine M; Hastings, Meredith K; Tobias, Craig R (2021): Seasonal nitrogen concentrations and nitrate isotopes of a New England River from 2018 to 2019 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.931561

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Abstract:
Data collection occurred in four parts during 2018 to 2019 for the Pawcatuck River: weekly collection from the Stillman and Westerly Bridges in Westerly, RI; collections were also taken seasonally from various bridges in a transect from head of the Pawcatuck River at Warden Pond to Westerly, RI; rain water was collected at UConn Avery Point - Groton, CT; and wastewater data reported by Westerly Wastewater Facility (which was corroborated in house at UConn Avery Point). Standard data collected was nutrient concentrations of nitrate, nitrite, ammonium, and phosphate. Total dissolved nitrogen, particulate nitrogen, and chlorophyll-a were also collected and measured. Our study utilized stable isotopes of nitrate and particulate nitrogen with the intent of tracking sources, cycling, and loading along the river. We focused on δ15N-NO3, δ18O-NO3, δ17O-NO3, and δ15N-PN. Through collection of rainwater at UConn Avery Point, percent atmospheric deposition of river samples based on the mass independent fractionation between δ17O and δ18O was calculated. Loading was calculated for each nutrient source based on collected data and river discharge reported from the USGS.
Keyword(s):
15N; 18O; N Isotopes; nitrate; nitrogen; Pawcatuck River
Related to:
Rollinson, Veronica R; Granger, Julie; Clark, Sydney C; Blanusa, Mackenzie L; Koerting, Claudia P; Vaudrey, Jamie M P; Treibergs, Lija A; Westbrook, Holly C; Matassa, Catherine M; Hastings, Meredith K; Tobias, Craig R (2021): Seasonality of nitrogen sources, cycling, and loading in a New England river discerned from nitrate isotope ratios. Biogeosciences, 18(11), 3421-3444, https://doi.org/10.5194/bg-18-3421-2021
Coverage:
Median Latitude: 41.374637 * Median Longitude: -71.827106 * South-bound Latitude: 41.316189 * West-bound Longitude: -72.062786 * North-bound Latitude: 41.429490 * East-bound Longitude: -71.567940
Date/Time Start: 2018-01-10T14:10:00 * Date/Time End: 2019-07-03T00:00:00
Event(s):
Mac_Rain_Rainwater * Latitude: 41.316189 * Longitude: -72.062786 * Date/Time Start: 2018-09-06T00:00:00 * Date/Time End: 2018-12-02T00:00:00
Pawcatuck-Seasonal_Transect * Latitude Start: 41.429490 * Longitude Start: -71.567940 * Latitude End: 41.377771 * Longitude End: -71.831548 * Date/Time Start: 2018-05-21T06:14:00 * Date/Time End: 2019-03-12T16:31:00 * Location: Pawcatuck River * Method/Device: Bottle, Van Dorn (VDB)
Pawcatuck-Weekly_Stillman_Bridge * Latitude: 41.385210 * Longitude: -71.833014 * Date/Time Start: 2018-01-10T14:10:00 * Date/Time End: 2018-10-23T08:35:00 * Location: Pawcatuck River * Method/Device: Bottle, Van Dorn (VDB)
Comment:
#999: Sensor malfunction
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventRollinson, Veronica R
2Sample IDSample IDRollinson, Veronica R
3Sample positionSamp posRollinson, Veronica RRainwater: Collected in trace metal clean 1L Teflon bottles with glass fullel connected via vapor lock to prevent evaporation
4DATE/TIMEDate/TimeRollinson, Veronica RGeocode
5River discharge, dailyQ daym3Rollinson, Veronica RGauge station (GS)Unit: m**3/day; Obtained from USGS Guage 01118500 at Westerly RI
6DischargeQm3/dayRollinson, Veronica RPlant reported discharge
7ConductivityCondµSRollinson, Veronica ROakton Con 450
8Temperature, waterTemp°CRollinson, Veronica RDissolved oxygen optical probe (Orion Star)daily 100 % air calibration
9Oxygen, dissolvedDOmg/lRollinson, Veronica RDissolved oxygen optical probe (Orion Star)daily 100 % air calibration
10DistanceDistancekmRollinson, Veronica RCalculatedDistance Down stream for Transects; Distance calucated within GoogleEarth starting at Station 1 in Warden Pond
11Sample volumeSamp volmlRollinson, Veronica RVolume filtered A
12Sample volumeSamp volmlRollinson, Veronica RVolume filtered B
13Sample volumeSamp volmlRollinson, Veronica RVolume filtered C
14Sample volumeSamp volmlRollinson, Veronica RVolume filtered D
15Nitrate[NO3]-µmol/lRollinson, Veronica RConversion to NOx with a hot Vanadium II solution followed by detection on a Teledyne chemiluminescent NOx detector (Braman and Hedrix 1989)
16Ammonium[NH4]+µmol/lRollinson, Veronica RSmartchem analyser (spectrophotometric detection)Standard Methods SM 4500-NH3 F; https://www.standardmethods.org/doi/abs/10.2105/SMWW.2882.087
17Nitrogen, inorganic, dissolvedDINµmol/lRollinson, Veronica RCalculated (sum of Nitrate, Nitrite, Ammonium)
18Nitrogen, totalTNµmol/lRollinson, Veronica RPersulfate oxidation and colorimetryConversion of TDN to DIN/nitrate via Persulfate oxidation (Nydahl 1978; Knapp et al. 2005)
19Nitrogen, organic, dissolvedDONµmol/lRollinson, Veronica RCalculatedComputational difference between [TN] and [DIN]
20Phosphate[PO4]3-µmol/lRollinson, Veronica RSmartchem analyser (spectrophotometric detection)Standard Method SM4500-P-E; https://www.standardmethods.org/doi/10.2105/SMWW.2882.093
21Chlorophyll aChl aµg/lRollinson, Veronica RPigments, Turner fluorometer
22Nitrate[NO3]-µmol/lRollinson, Veronica RPlant reported
23Ammonium[NH4]+µmol/lRollinson, Veronica RPlant reported
24Nitrogen, totalTNµmol/lRollinson, Veronica RPlant reported; Total Kjeldahl Nitrogen: Reported numbers from Westerly Wastewater Treatment facility, Sum of Organic Nitrogen and Ammonia
25δ15N, nitrateδ15N NO3‰ airRollinson, Veronica RThermo Delta V GC-IRMS with custom modified Gas Bench II with two cold traps and a PAL Autosampler (Sigman et al. 2001; Casciotti et al, 2002; Kaiser et al., 2007)
26δ15N, nitrate, standard deviationδ15N NO3 std dev±Rollinson, Veronica R
27δ18O, nitrateδ18O NO3‰Rollinson, Veronica RThermo Delta V GC-IRMS with custom modified Gas Bench II with two cold traps and a PAL Autosampler (Sigman et al. 2001; Casciotti et al, 2002; Kaiser et al., 2007)
28δ18O, nitrate, standard deviationδ18O NO3 std dev±Rollinson, Veronica R
29Δ17O, nitrateΔ17O NO3‰Rollinson, Veronica RΔ17O=δ17O-0.52 x δ18O (Thiemens 1999)
30Atmospheric depositionAD%Rollinson, Veronica RRain corrected
31δ18Oδ18O‰Rollinson, Veronica RRain Corrected ( vs. VSMOW)
32Nitrogen, particulatePNµgRollinson, Veronica R
33δ15N, total particulate nitrogenδ15N TPN‰ airRollinson, Veronica RElement analyser CHN, Costech
34Nitrogen, particulatePNµmol/lRollinson, Veronica R
35CommentCommentRollinson, Veronica RComposite: samples collected from wastewater effluent over 24 hour period; Grab:samples collected from wastewater effluent at given time
36Present weatherwwRollinson, Veronica RStorm Classification (for rainwater data only)
37Nitrate, loadingNO3 loadingmol/dayRollinson, Veronica R
38Ammonium, loadingNH4 loadingmol/dayRollinson, Veronica R
39Nitrogen, inorganic, dissolved, loadingDIN loadingmol/dayRollinson, Veronica R
40Nitrogen, organic, dissolved, loadingDON loadingmol/dayRollinson, Veronica R
41Phosphate, loadingPO4 loadingmol/dayRollinson, Veronica R
42Nitrogen, total, particulate, loadingTPN loadingmol/dayRollinson, Veronica R
43Nitrogen, total dissolved, loadingTDN loadingmol/dayRollinson, Veronica R
44Nitrogen, total, loadingTN loadingmol/dayRollinson, Veronica R
45Inverse of Nitrate, flux1/NO3 Fluxd/molRollinson, Veronica R
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
5241 data points

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