This presentation was given at the Phycological Society of Southern Africa meetin in 2004 and shows prelimanary investigations into modeling and IMTA seaweed abalone land based recirculting system
1. D. V. Robertson-Andersson; A. Govender; T. Probyn; C. Halling; M. Troell; J. Bolton & R. Anderson A preliminary investigation into modelling an integrated seaweed ( Ulva lactuca ) & abalone ( Haliotis midae ) system
9. Seaweed tank Pump Gravity feed Abalone tanks Seaweed tank 80 % recirculation 20 % Sea water Over flow
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13. Balancing the equations Using linear mass balanced equations Multiple regression of factors Problems putting theory and reality together
14. RESULTS Dissolved oxygen Dissolved oxygen in a recirculation system 15 16 20 00 04 08 12 16 20 00 04 08 12 16
15. RESULTS Dissolved oxygen Dissolved oxygen in a recirculation system 15 16 20 00 04 08 12 16 20 00 04 08 12 16
16. RESULTS pH in a recirculation system pH 15 16 20 00 04 08 12 16 20 00 04 08 12 16
17. RESULTS pH in a recirculation system pH 15 16 20 00 04 08 12 16 20 00 04 08 12 16
18. RESULTS Temperature in a recirculation system Temperature 15 16 20 00 04 08 12 16 20 00 04 08 12 16
19. RESULTS Temperature in a recirculation system Temperature 15 16 20 00 04 08 12 16 20 00 04 08 12 16
20. RESULTS ammonium levels in recirculated tanks range between 0.003 - 0.005 u M N.L -1 ammonium levels in abalone flow through tanks = 0.01 u M N.L -1 Ammonium levels
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23. 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 JSP Mariculture farm particularly K. Ruck N R F Swedish and South African Collaborative Programme