PILOT, COMMERCIAL SCALE, CULTIVATION OF ULVA AND GRACILARIA ON AN ABALONE FARM AT DANGER POINT (CAPE SOUTH COAST)
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This was the first report back meeting at the Abalone Farmers Association of Southern Africa in 2002 and illustrated how we were going to cultivate Ulva and Gracilaria in Aquaculture effluent.
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PILOT, COMMERCIAL SCALE, CULTIVATION OF ULVA AND GRACILARIA ON AN ABALONE FARM AT DANGER POINT (CAPE SOUTH COAST)
- 1. Robertson-Andersson, D. V .; Njobeni, A.; Bolton, J. J.; Anderson, R. J. & Probyn, T. A. PILOT, COMMERCIAL SCALE, CULTIVATION OF ULVA AND GRACILARIA ON AN ABALONE FARM AT DANGER POINT (CAPE SOUTH COAST)
- 6. Longitudinal profile of tanks Transverse profile of tanks
- 9. RGR % day -1 J J A S O N D J F M A M J J A RESULTS RGR of Ulva from June ‘01 to Aug ‘02 in sea. (1) Indicates where shading started, (2) where water exchanges increased and (3) indicates where shading stopped. 1 3 2
- 10. RGR % day -1 S O N D J F M A M J J A RESULTS RGR of Ulva from June ‘01 to Aug ‘02 in sea, fertilized & abalone effluent water. (1) Indicates where shading started, (2) where water exchanges increased and (3) indicates where shading stopped. 1 3 2
- 11. RGR % day -1 J F M A M J RESULTS RGR of Ulva from June ‘01 to Jun ‘02 in sea, shaded sea, fertilized & abalone effluent water. (2) Indicates where water exchanges increased. 2
- 13. RESULTS Myrionema strangulans (MS) BAD INFECTION DEAD HEALTHY INFECTED
- 14. RESULTS RGR of Gracilaria from June ‘01 to April ’02 in Sea, fertilized & abalone effluent water. (1) Indicates where shading started (2) indicates where volume exchanges changed from 4 to 12. J J A S O N D J F M A 2 RGR % Day -1 1
- 16. RESULTS pH values for Ulva at 4 V exchanges day -1 8 10 12 14 16 / 9 11 13 15 17 19 21 23 /1 3 5 7 8 12 16 20 Cool Day Pulse fertilization Hot Day
- 19. THE END Thank you ACKNOWLEDGEMENTS I would like to extend special thanks to the following people and organizations without whose help this project would be impossible: I & J Mariculture farm particularly N. Loubser, H. Otto and L. Ansara N R F Swedish and South African Collaborative Programme
- 20. PO 4 values for abalone incoming and out going water in shaded and unshaded tanks of Ulva . Area between red lines is range for seawater. RESULTS µ M PO 4 / L
- 21. PO 4 values for Fertilized incoming and out going water in shaded and unshaded tanks of Ulva . Area between red lines is range for seawater. RESULTS µ M PO 4 / L