| Title | Pre-processed chlorophyll a data from the Integrated Ecosystem Programme: Southern Benguela (IEP:SB) on the Algoa Voyage 209, August 2014 |
|---|---|
| Project | Integrated Ecosystem Programme: Southern Benguela (IEP: SB) |
| Authors |
Mfundo Lombi Keshnee Pillay |
| Publisher | Department of Forestry, Fisheries and the Environment (2017) |
| Contributors |
Contact Person: Keshnee Pillay |
| Abstract | This is pre-processed chlorophyll a data from the Integrated Ecosystem Programme: Southern Benguela on the Algoa Voyage 209, 5 to 15 August, 2014. The Integrated Ecosystem Programme: Southern Benguela (IEP:SB) 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. 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. |
| Methods | This dataset was derived from discrete Chl-a data from the RV Algoa Voyage V209, 04 August 2014 - 11 August 2014. The following fluorometric chlorophyll sampling and analysis procedure was followed: - Tapped 200ml seawater 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 a foil of a decent size to accommodate complete 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.- Stored the labelled samples in a freezer.- Recorded the volume filtered next to the correct Depth on both the Phys/ Chem and biological deck chits. -Transferred the samples into a test tube, and covered them 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 are recorded in a spreadsheet from the relevant deck chits and instruments (fluorometer). |
| Data | |
| Temporal extent | 05 Aug 2014 – 15 Aug 2014 |
| 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 |
| Keywords | Algoa, Algoa 209, NISKIN BOTTLES, Niskin Water Sampling Bottles, SOUTH ATLANTIC OCEAN |
| Related resources |
|