Title Chl-a data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on Algoa Voyage 248, May 2018
Project Integrated Ecosystem Programme: Southern Benguela (IEP: SB)
Authors

Mutshutshu Tsanwani
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientist Production C 2nd Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa, tsanwanim@environment.gov.za

Publisher Department of Forestry, Fisheries and the Environment (2018)
Contributors

Project Member: Kanyisile Vena
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Technician Production C 2nd Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa, Kvena@environment.gov.za

Contact Person: Mutshutshu Tsanwani
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Marine Scientist Production C 2nd Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa, tsanwanim@environment.gov.za

Abstract First look at Chl-a data from a survey of West Coast of South Africa, Algoa Voyage V248, as part of the Integrated Ecosystem Programme.
Methods This dataset was derived from discrete Chl-a data from the RV Algoa Voyage V248, 23 May 2018 - 29 May 2018. The following fluorometric chlorophyll sampling and analysis procedure was followed:- Tapped 200ml sea water from CTD bottle into sampling bottle.- Filtered through a 2.5cm GFF at a vacuum not exceeding 30cm of Mercury.- Folded filter in half, encasing sample on the inside, using tweezers.- Wrapped in foil of a decent size to accommodate full identification.- Wrote identification clearly on the foil: Grid number and Depth.- Placed all the samples from a station, in order, in a plastic bag or foil wrap and labelled with Voyage No, Ships No and Grid No- Put in a labeled jar in the freezer.- Recorded the volume filtered next to the correct depth on both, the Phys/ Chem and biological deck chits.- Removed samples from jar and put samples into test tube and covered in acetone.- Placed test tubes into fluorometer to get chlorophyll value.- Applied calibration coefficient to the chlorophyll value based on the fluorometers calibration. Data and metadata is recorded in an excel spreadsheet from the relevant deck chits and instruments (fluorometer).
Data
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
Temporal extent 23 May 2018 – 29 May 2018
Geographic extent

West Coast, South Africa

North: -28.7535480371
South: -34.9911930887
West: 14.5463131624
East: 18.6441020704

Keywords Algoa, Algoa 248, NISKIN BOTTLES, Niskin Water Sampling Bottles, SOUTH ATLANTIC OCEAN
Related resources
  • This digital object is part of Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on Algoa Voyage 248, May 2018 (10.15493/dea.mims.26052249)