Analysed Nutrient data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) cruise on the Algoa Voyage 235, February 2017 ...

• Main Authors: Raquel Flynn, Jessica Burger, Sarah Fawcett
• Format: Dataset
• Language: English
• Published: Department of Forestry, Fisheries and the Environment 2020
• Subjects: -1003.2; m; Mean sea level; completed; license; oceans; Integrated Ecosystem Programme Southern Benguela IEP SB; SOUTH ATLANTIC OCEAN; Algoa; Algoa 235; Nutrients; WGS 84; vector; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.15493/dea.mims.605203; https://api.odp.saeon.ac.za/catalog/MIMS/go/10.15493/DEA.MIMS.605203

Nutrient 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 patterms. 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. ... : Nitrate and silicate concentrations are to be measured on a Lachat QuickChem Flow Analysis platform following published auto-analysis protocols (Grasshoff 1976; Diamond 1994). The Lachat QuickChem Flow Autoanalysis platform configuration used has a detection limit of 0.1 µM. Nitrite concentrations were determined using the benchtop colorimetric Greiss reaction (Bendschneider and Robinson 1952; Parsons et al. 1984). Absorbance was measured using a Thermo Scientific Geneysis 30 Visible spectrophotometer at a wavelength of 543 nm. The method has a detection limit of 0.05 µM. Phosphate was determined using the Strickland and Parsons colourimetric method (Strickland and Parsons 1968). Samples and standards were measured using a Thermo Scientific Geneysis 30 Visible spectrophotometer at a wavelength of 880 nm. The method has a detection limit of 0.05 µM. ...