Marine Information Management System | Analysed Nitrate isotope data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruise on the RV Algoa Voyage 235, February 2017

DOI: 10.15493/DEA.MIMS.605207

Title	Analysed Nitrate isotope data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruise on the RV Algoa Voyage 235, February 2017
Project	Integrated Ecosystem Programme: Southern Benguela (IEP: SB)
Authors	Raquel Flynn Department of Oceanography, University of Cape Town Department of Oceanography, University of Cape Town, Rondebosch, Cape Town, 7701, South Africa, FLYRAQ001@myuct.ac.za Jessica Burger Department of Oceanography, University of Cape Town Department of Oceanography, University of Cape Town, Rondebosch, Cape Town, 7701, South Africa, jessicaburgersa@gmail.com Sarah Fawcett Department of Oceanography, University of Cape Town Department of Oceanography, University of Cape Town, Rondebosch, Cape Town, 7701, South Africa, sarah.fawcett@uct.ac.za
Publisher	Department of Forestry, Fisheries and the Environment (2020)
Contributors	Contact Person: Keshnee Pillay Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) 2nd Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa, KePillay@environment.gov.za
Abstract	Nitrate isotope data for the Integrated Ecosystem Programme: Southern Benguela (IEP:SB): Feb 2017.IEP:SB focuses on the biologically productive, cold waters of the Benguela Current Large Marine Ecosystem, which are inherently variable on short time-scales and responsive to changing weather patterns. The research aims to provide relevant, reliable and improved assessment of the ecosystem, in support of its effective management, preservation and conservation, so that South Africans can benefit from a healthy and well-functioning ocean environment. The overarching objective is to enhance understanding in process studies by assessing the importance, timing and magnitude of mechanisms and processes that influence the Southern Benguela ecosystem structure and functioning, including the climate variability.
Methods	Nitrate N and O isotope ratios were measured using the “denitrifier method” (Sigman et al. 2001; Casciotti et al. 2002; McIlvin and Casciotti 2011). Briefly, nitrate is added to active denitrifying bacteria that lack a terminal N2O reductase enzyme and converts aqueous nitrate quantitatively to N2O gas. The N and O isotope ratios of the N2O gas are then analysed by isotope ratio mass spectrometry (IRMS).
Data	Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) Cite 10.15493/DEA.MIMS.605207 Style Terms of use These data are made available with the express understanding that any such use will properly acknowledge the originator(s) and publisher and cite the accession numbers and/or associated Digital Object Identifiers. Anyone wishing to use these data should properly cite and attribute the data providers listed as authors in the metadata provided with each dataset. It is expected that all the conditions of the data license will be strictly honoured. Use of any material herein should be properly cited using the dataset’s persistent identifiers such as accession numbers and DOIs. I agree to the terms of use
Temporal extent	16 Feb 2017 – 28 Feb 2017
Geographic extent	Southern Benguela, West coast of South Africa, Long term monitoring lines, Kleinsee Monitoring Line, Namaqua Monitoring Line, St Helena Bay Monitoring Line, Scarborough Monitoring Line North: -28.7535480371 South: -34.9911930887 West: 14.5463131624 East: 18.6441020704
Vertical extent	Max: -1013.7 m Min: -1013.7 m
Keywords	Algoa, Algoa 235, Nitrate isotope, SOUTH ATLANTIC OCEAN
Related resources	This digital object continues 10.2989/1814232X.2018.1502095 This digital object is part of Analysed primary production data from the 2017 Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruises (10.15493/DEA.MIMS.605209)

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