Title Pre-processed Chl-a data from the Integrated Ecosystem Programme cruise: Southern Benguela (IEP:SB) on the Algoa Voyage 232, November 2016
Project Integrated Ecosystem Programme: Southern Benguela (IEP: SB)
Authors

Mfundo Lombi
Oceans and Coastal Research, Department of Forestry, Fisheries and the Environment (DFFE) Control Technician 2nd Floor, Foretrust Building, 1 Martin Hammerschlag Way, Cape Town, South Africa, mlombi@environment.gov.za

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

Publisher Department of Forestry, Fisheries and the Environment (2017)
Contributors

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

Abstract This is chl-a data from the Integrated Ecosystem Programme (IEP) cruise: Southern Benguela on the Algoa V232, 15 - 26 November, 2016. The Integrated Ecosystem Programme is a multi-disciplinary, multi-institutional platform to undertake relevant science in the Southern Benguela; also functioning as a platform for collaboration and learning. All projects aim to develop an ecosystem indicator that can be used to effectively monitor and understand the Southern Benguela i.e physical, chemical, planktonic, microbial, seabird and benthic ecosystem indicators, used for ecosystem-based management.
Methods This dataset was derived from discrete Chl-a data from the RV Algoa Voyage V232, 19 November 2016 - 24 November 2016. 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 15 Nov 2016 – 26 Nov 2016
Geographic extent

Southern Benguela, West coast of South Africa, 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

Keywords Algoa, Algoa 232, NISKIN BOTTLES, Niskin Water Sampling Bottles, SOUTH ATLANTIC OCEAN
Related resources
  • This digital object is part of Integrated Ecosystem Programme cruise: Southern Benguela (IEP:SB) on the Algoa Voyage 232, November 2016 (10.15493/dea.mims.26052241)