Abstract:

This dataset contains values for water column concentrations of dissolved inorganic nutrients (nitrate + nitrite, nitrite, ammonium, phosphate, silicate), particulate phosphorus, chlorophyll a and phaeopigments and dissolved oxygen from multiple depths along profiles conducted at 5 primary stations and 6 survey stations as part of CARTHE's 3rd Pelagic Cruise on board the R/V Pelican between July 7th and 10th 2014. This dataset is associated with the following publication: Mason OU, Canter E, Gillies LE, Paisie T and Roberts BJ. 2016. Mississippi River plume enriches microbial diversity in the northern Gulf of Mexico. Frontiers in Microbiology 7:1048. ​DOI: 10.3389/fmicb.2016.01048.

Suggested Citation:

Roberts, Brian. 2016. Dissolved inorganic nutrients, pigments, and dissolved oxygen concentrations collected during R/V Pelican cruise July 7-10 2014, northern Gulf of Mexico near DeSoto Canyon, PE15-01. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7BZ63Z7

Publications:

Mason, O. U., Canter, E. J., Gillies, L. E., Paisie, T. K., & Roberts, B. J. (2016). Mississippi River Plume Enriches Microbial Diversity in the Northern Gulf of Mexico. Frontiers in Microbiology, 7. doi:10.3389/fmicb.2016.01048

Walker, B. D., Druffel, E. R. M., Kolasinski, J., Roberts, B. J., Xu, X., & Rosenheim, B. E. (2017). Stable and radiocarbon isotopic composition of dissolved organic matter in the Gulf of Mexico. Geophysical Research Letters, 44(16), 8424–8434. doi:10.1002/2017gl074155

Chanton, J. P., Jaggi, A., Radović, J. R., Rosenheim, B. E., Walker, B. D., Larter, S. R., … Oldenburg, T. B. P. (2019). Mapping Isotopic and Dissolved Organic Matter Baselines in Waters and Sediments of the Gulf of Mexico. Scenarios and Responses to Future Deep Oil Spills, 160–181. doi:10.1007/978-3-030-12963-7_10

Purpose:

This dataset was developed as part of CARTHE's 3rd Pelagic Cruise (PE-15-01) from 7 - 10 July 2014. This component of the research effort addressed two main objectives: 1) provide information on dissolved inorganic nutrients, particulate phosphorus, and chlorophyll a/ phaeopigment concentrations along profiles conducted at 5 primary stations and 6 survey stations; and 2) determine the accuracy of DO patterns generated by CTD profiles.

Data Parameters and Units:

Date (MMDDYYYY)-date water collected Latitude (decimal degrees)-latitude of station sampled Longitude (decimal degrees)-longitude of station sampled Station ID-site identifier Niskin bottle # (number)-number of the Niskin bottle from which water was collected Estimated depth (meters)-meters below air-water interface that was targeted for water collection NO3 + NO2 (micromol/L)-concentration of nitrate + nitrite (measured) NO2 (micromol/L)-concentration of nitrite (measured) NO3 (micromol/L)-concentration of nitrate (calculated) NH4 (micromol/L)-concentration of ammonium (measured) DIN (micromol/L)-concentration of dissolved inorganic nitrogen (calculated) PO4 (micromol/L)-concentration of orthophoshate (measured) SiO2 (micromol/L)-concentration of silicate (measured) NO3 / [NO3 + NO2]-ratio of nitrate to [nitrate + nitrite] (calculated) NH4 / DIN-ratio of ammonium to dissolved inorganic nitrogen (DIN) (calculated) DIN / DIP-ratio of dissolved inorganic nitrogen (DIN) to dissolved inorganic phosphorus (DIP = PO4) (calculated) DIN / SiO2-ratio of dissolved inorganic nitrogen (DIN) to silicate (calculated) SiO2 / DIP-ratio of silicate to dissolved inorganic phosphorus (DIP = PO4) (calculated) Particulate P (nmol/L)-concentration of particulate phosphorus (measured) Chlorophyll a (micrograms/Liter)-concentration of chlorophyll a (measured) Phaeo- (micrograms/Liter)-concentration of phaeopigments (measured) Total (micrograms/Liter)-concentration of total pigments (calculated) DO winkler (mmol m-3)-concentration of dissolved oxygen in BOD bottles fixed immediately after filling as determined via Winkler titrations DO CTD (mmol m-3)-concentration of dissolved oxygen generated from CTD profiles for that depth

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