SlideShare uma empresa Scribd logo
1 de 28
Robertson-Andersson, D. V .; Bolton, J. B.; Anderson, R. J. & Probyn, T. A. CULTIVATION OF  ULVA  IN AQUACULTURE EFFLUENT AFASA project meeting 2003
Why cultivate seaweeds on abalone farms? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
AIMS ,[object Object],[object Object],[object Object],[object Object],[object Object]
PROJECT SITES ,[object Object],[object Object],[object Object]
PROJECT DESIGN AT I & J ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1 2 3 4 1 2 3 4 1 2 3 4 Sea water Fertilized sea water Abalone waste water 4 V 4 V 12 V 12 V 12 V 12 V
Longitudinal profile of tanks Transverse profile of tanks 5 m 1 m
PROJECT DESIGN AT JSP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1 2 3 4 1 2 3 4 1 2 3 4 Sea water Turbot effluent  Abalone effluent 20  20 20
Small tanks Medium tanks 0.5 m 1  m 1  m 1  m
0 1 2 3 4 5 6 7 8 sea shaded sea fert shaded fert abalone shaded abalone SGR % day  -1 J  J  A  S  O  N  D  J  F  M  A  M  J  J  A  S  O RESULTS SGR of  Ulva  from June ‘01 to October ‘02 in sea, fertilized & abalone effluent water. (2) where water exchanges increased at I & J  2
RESULTS RGR of  Ulva  from June ‘01 to October ‘02 in sea, Turbot & abalone effluent water at JSP.
RESULTS SGR of  Ulva  from June ‘01 to October ‘02 in sea, Turbot & abalone effluent water at JSP.
RESULTS SGR of  Ulva  from June ‘01 to October ‘02 in sea, Turbot & abalone effluent water at JSP.
RESULTS Myrionema strangulans  (MS) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
RESULTS Myrionema strangulans  (MS) BAD INFECTION DEAD HEALTHY INFECTED
RESULTS MS infestation of  Ulva  thalli
RESULTS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],YIELDS
RESULTS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],FLOW RATES (4, 12 & 20)
RESULTS SHADING ,[object Object],[object Object],[object Object],[object Object],[object Object]
RESULTS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Tissue Nitrogen
RESULTS Tissue Nitrogen vs. Thallus  Colour Tissue nitrogen vs. thallus colour
RESULTS ,[object Object],[object Object],[object Object],[object Object],RECIRCULATION
Results ECONOMICS
RESULTS ECONOMICS Abalone growth curves
RESULTS 31.2 % increase in weight using rotation diet vs kelp only diet over 9 months Cost: $30 per kg X R 8 = R 240 10 (100g) abalone in 1 kg cost per abalone = R 24 less profit and freight = R 15 per abalone ECONOMICS
RESULTS Increase in SGR:  49 – 68 % per year Normal Growth to 100g = 5 years accelerated growth = 3.3 – 3.6 years @ R 15 per abalone New cost :   R 12.40 – R 13.50 per abalone Savings: 17 – 28  % R 1.50  - R 2.60 per abalone ECONOMICS
RESULTS Average farm (50 tons @ 100 g per abalone) = 500 000 100g abalone X R 1.50 or R 2.60 EQUALS Savings: R 800 000 – R 1.3 million ECONOMICS
CONCLUSIONS ,[object Object],[object Object],[object Object],[object Object]
  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

Mais conteúdo relacionado

Mais procurados

Dragon Water Group Aquaculture 2
Dragon  Water  Group  Aquaculture 2Dragon  Water  Group  Aquaculture 2
Dragon Water Group Aquaculture 2Slava Avramenko
 
Presnetation on bisleri
Presnetation on bisleriPresnetation on bisleri
Presnetation on bislerisahilchauhan55
 
Oklahoma Blue Thumb Water Education overview
Oklahoma Blue Thumb Water Education overviewOklahoma Blue Thumb Water Education overview
Oklahoma Blue Thumb Water Education overviewguard911
 
Math in the News: Issue 96
Math in the News: Issue 96Math in the News: Issue 96
Math in the News: Issue 96Media4math
 
Urban Water Quality Issues - Introduction to Urban Stormwater
Urban Water Quality Issues - Introduction to Urban StormwaterUrban Water Quality Issues - Introduction to Urban Stormwater
Urban Water Quality Issues - Introduction to Urban Stormwaternacaa
 
Nick Paling Lecture on river catchment water quality assessment
Nick Paling Lecture on river catchment water quality assessmentNick Paling Lecture on river catchment water quality assessment
Nick Paling Lecture on river catchment water quality assessmentWestcountry Rivers Trust
 
Water audit
Water audit Water audit
Water audit Uma Rajan
 
Water Pollution in the yellow river
Water Pollution in the yellow riverWater Pollution in the yellow river
Water Pollution in the yellow rivershaowen
 
water from Turkey
water from Turkeywater from Turkey
water from Turkeyberfinim
 
D9_SP16_Report 1_Water Quality
D9_SP16_Report 1_Water QualityD9_SP16_Report 1_Water Quality
D9_SP16_Report 1_Water QualityMark Ochweri
 
Environment engineering I
Environment engineering IEnvironment engineering I
Environment engineering ISACHIN NAGAYACH
 
micro research poster update11new
micro research poster update11newmicro research poster update11new
micro research poster update11newKelynn Brengelman
 
Michal Kravcik, "The New Water Reality"
Michal Kravcik, "The New Water Reality"Michal Kravcik, "The New Water Reality"
Michal Kravcik, "The New Water Reality"bio4climate
 
Water Water Everywhere And Not A Drop2
Water Water Everywhere And Not A Drop2Water Water Everywhere And Not A Drop2
Water Water Everywhere And Not A Drop2Caroline Gerardo
 
Water Worries -- Nitrogen From Septic Tanks, Fertilizer, Poor Sewage Treatmen...
Water Worries -- Nitrogen From Septic Tanks, Fertilizer, Poor Sewage Treatmen...Water Worries -- Nitrogen From Septic Tanks, Fertilizer, Poor Sewage Treatmen...
Water Worries -- Nitrogen From Septic Tanks, Fertilizer, Poor Sewage Treatmen...Save The Great South Bay
 
Growth, Drought, and Groundwater in Texas... What are we learning?
Growth, Drought, and Groundwater in Texas... What are we learning?Growth, Drought, and Groundwater in Texas... What are we learning?
Growth, Drought, and Groundwater in Texas... What are we learning?The Texas Network, LLC
 
NH: Rain Gardens - Protect the Great Bay Estuary
NH: Rain Gardens - Protect the Great Bay EstuaryNH: Rain Gardens - Protect the Great Bay Estuary
NH: Rain Gardens - Protect the Great Bay EstuarySotirakou964
 

Mais procurados (19)

Dragon Water Group Aquaculture 2
Dragon  Water  Group  Aquaculture 2Dragon  Water  Group  Aquaculture 2
Dragon Water Group Aquaculture 2
 
Presnetation on bisleri
Presnetation on bisleriPresnetation on bisleri
Presnetation on bisleri
 
Oklahoma Blue Thumb Water Education overview
Oklahoma Blue Thumb Water Education overviewOklahoma Blue Thumb Water Education overview
Oklahoma Blue Thumb Water Education overview
 
Math in the News: Issue 96
Math in the News: Issue 96Math in the News: Issue 96
Math in the News: Issue 96
 
Urban Water Quality Issues - Introduction to Urban Stormwater
Urban Water Quality Issues - Introduction to Urban StormwaterUrban Water Quality Issues - Introduction to Urban Stormwater
Urban Water Quality Issues - Introduction to Urban Stormwater
 
Nick Paling Lecture on river catchment water quality assessment
Nick Paling Lecture on river catchment water quality assessmentNick Paling Lecture on river catchment water quality assessment
Nick Paling Lecture on river catchment water quality assessment
 
Water audit
Water audit Water audit
Water audit
 
Water Pollution in the yellow river
Water Pollution in the yellow riverWater Pollution in the yellow river
Water Pollution in the yellow river
 
water from Turkey
water from Turkeywater from Turkey
water from Turkey
 
D9_SP16_Report 1_Water Quality
D9_SP16_Report 1_Water QualityD9_SP16_Report 1_Water Quality
D9_SP16_Report 1_Water Quality
 
Environment engineering I
Environment engineering IEnvironment engineering I
Environment engineering I
 
micro research poster update11new
micro research poster update11newmicro research poster update11new
micro research poster update11new
 
Water Audit
Water AuditWater Audit
Water Audit
 
Michal Kravcik, "The New Water Reality"
Michal Kravcik, "The New Water Reality"Michal Kravcik, "The New Water Reality"
Michal Kravcik, "The New Water Reality"
 
Water Water Everywhere And Not A Drop2
Water Water Everywhere And Not A Drop2Water Water Everywhere And Not A Drop2
Water Water Everywhere And Not A Drop2
 
Water Worries -- Nitrogen From Septic Tanks, Fertilizer, Poor Sewage Treatmen...
Water Worries -- Nitrogen From Septic Tanks, Fertilizer, Poor Sewage Treatmen...Water Worries -- Nitrogen From Septic Tanks, Fertilizer, Poor Sewage Treatmen...
Water Worries -- Nitrogen From Septic Tanks, Fertilizer, Poor Sewage Treatmen...
 
Growth, Drought, and Groundwater in Texas... What are we learning?
Growth, Drought, and Groundwater in Texas... What are we learning?Growth, Drought, and Groundwater in Texas... What are we learning?
Growth, Drought, and Groundwater in Texas... What are we learning?
 
NH: Rain Gardens - Protect the Great Bay Estuary
NH: Rain Gardens - Protect the Great Bay EstuaryNH: Rain Gardens - Protect the Great Bay Estuary
NH: Rain Gardens - Protect the Great Bay Estuary
 
Mary Kelly Quinn
Mary Kelly QuinnMary Kelly Quinn
Mary Kelly Quinn
 

Semelhante a CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT

CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT A preliminary investigation
CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT A preliminary investigationCULTIVATION OF ULVA IN AQUACULTURE EFFLUENT A preliminary investigation
CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT A preliminary investigationDeborah Robertson-Andersson
 
Can kelp extract (KELPAK) be useful in seaweed mariculture?
Can kelp extract (KELPAK) be useful in seaweed mariculture?Can kelp extract (KELPAK) be useful in seaweed mariculture?
Can kelp extract (KELPAK) be useful in seaweed mariculture?Deborah Robertson-Andersson
 
THE EVOLUTION OF INTEGRATED SEAWEED CULTIVATION IN TEMPERATE SOUTHERN AFRICA
THE EVOLUTION OF INTEGRATED SEAWEEDCULTIVATION IN TEMPERATE SOUTHERN AFRICATHE EVOLUTION OF INTEGRATED SEAWEEDCULTIVATION IN TEMPERATE SOUTHERN AFRICA
THE EVOLUTION OF INTEGRATED SEAWEED CULTIVATION IN TEMPERATE SOUTHERN AFRICADeborah Robertson-Andersson
 
Shrimp grow-out culture.pdf
Shrimp grow-out culture.pdfShrimp grow-out culture.pdf
Shrimp grow-out culture.pdfRayLorenzOrtega
 
THE EVOLUTION OF INTEGRATED SEAWEED CULTIVATION IN TEMPERATE SOUTHERN AFRICA
THE EVOLUTION OF INTEGRATED SEAWEEDCULTIVATION IN TEMPERATE SOUTHERNAFRICATHE EVOLUTION OF INTEGRATED SEAWEEDCULTIVATION IN TEMPERATE SOUTHERNAFRICA
THE EVOLUTION OF INTEGRATED SEAWEED CULTIVATION IN TEMPERATE SOUTHERN AFRICADeborah Robertson-Andersson
 
Science Forum Day 2 - Diaa Al Kenawy - Integrated agric-aquaculture, science...
Science Forum  Day 2 - Diaa Al Kenawy - Integrated agric-aquaculture, science...Science Forum  Day 2 - Diaa Al Kenawy - Integrated agric-aquaculture, science...
Science Forum Day 2 - Diaa Al Kenawy - Integrated agric-aquaculture, science...WorldFish
 
ABO salinity presentation pnnl
ABO salinity presentation pnnlABO salinity presentation pnnl
ABO salinity presentation pnnlAlgaeBiomass
 
Natural additives for fish - do we have to reinvent the wheel or is there a s...
Natural additives for fish - do we have to reinvent the wheel or is there a s...Natural additives for fish - do we have to reinvent the wheel or is there a s...
Natural additives for fish - do we have to reinvent the wheel or is there a s...International Aquafeed
 
A preliminary investigation into modelling an integrated seaweed (Ulva lactuc...
A preliminary investigation into modelling an integrated seaweed (Ulva lactuc...A preliminary investigation into modelling an integrated seaweed (Ulva lactuc...
A preliminary investigation into modelling an integrated seaweed (Ulva lactuc...Deborah Robertson-Andersson
 
A pilot scale integrated seaweed (Ulva lactuca) & abalone (Haliotis midae) re...
A pilot scale integrated seaweed (Ulva lactuca) & abalone (Haliotis midae) re...A pilot scale integrated seaweed (Ulva lactuca) & abalone (Haliotis midae) re...
A pilot scale integrated seaweed (Ulva lactuca) & abalone (Haliotis midae) re...Deborah Robertson-Andersson
 
PROJECT REPORT PRESENTATION1
PROJECT  REPORT PRESENTATION1PROJECT  REPORT PRESENTATION1
PROJECT REPORT PRESENTATION1Andrew Ayuka
 

Semelhante a CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT (20)

Cultivation of Ulva in aquaculture effluent
Cultivation of Ulva in aquaculture effluentCultivation of Ulva in aquaculture effluent
Cultivation of Ulva in aquaculture effluent
 
CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT A preliminary investigation
CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT A preliminary investigationCULTIVATION OF ULVA IN AQUACULTURE EFFLUENT A preliminary investigation
CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT A preliminary investigation
 
SEAWEED PADDLE POND SYSTEMS
SEAWEED PADDLE POND SYSTEMSSEAWEED PADDLE POND SYSTEMS
SEAWEED PADDLE POND SYSTEMS
 
Can kelp extract (KELPAK) be useful in seaweed mariculture?
Can kelp extract (KELPAK) be useful in seaweed mariculture?Can kelp extract (KELPAK) be useful in seaweed mariculture?
Can kelp extract (KELPAK) be useful in seaweed mariculture?
 
THE EVOLUTION OF INTEGRATED SEAWEED CULTIVATION IN TEMPERATE SOUTHERN AFRICA
THE EVOLUTION OF INTEGRATED SEAWEEDCULTIVATION IN TEMPERATE SOUTHERN AFRICATHE EVOLUTION OF INTEGRATED SEAWEEDCULTIVATION IN TEMPERATE SOUTHERN AFRICA
THE EVOLUTION OF INTEGRATED SEAWEED CULTIVATION IN TEMPERATE SOUTHERN AFRICA
 
Shrimp grow-out culture.pdf
Shrimp grow-out culture.pdfShrimp grow-out culture.pdf
Shrimp grow-out culture.pdf
 
THE EVOLUTION OF INTEGRATED SEAWEED CULTIVATION IN TEMPERATE SOUTHERN AFRICA
THE EVOLUTION OF INTEGRATED SEAWEEDCULTIVATION IN TEMPERATE SOUTHERNAFRICATHE EVOLUTION OF INTEGRATED SEAWEEDCULTIVATION IN TEMPERATE SOUTHERNAFRICA
THE EVOLUTION OF INTEGRATED SEAWEED CULTIVATION IN TEMPERATE SOUTHERN AFRICA
 
Science Forum Day 2 - Diaa Al Kenawy - Integrated agric-aquaculture, science...
Science Forum  Day 2 - Diaa Al Kenawy - Integrated agric-aquaculture, science...Science Forum  Day 2 - Diaa Al Kenawy - Integrated agric-aquaculture, science...
Science Forum Day 2 - Diaa Al Kenawy - Integrated agric-aquaculture, science...
 
Shrimp Culture
Shrimp CultureShrimp Culture
Shrimp Culture
 
Integrated Aqua-Agricultural Production Systems in the Brackish Water Zones o...
Integrated Aqua-Agricultural Production Systems in the Brackish Water Zones o...Integrated Aqua-Agricultural Production Systems in the Brackish Water Zones o...
Integrated Aqua-Agricultural Production Systems in the Brackish Water Zones o...
 
Ahmed Nasr Allah (World Fish) • 2019 IFPRI Egypt Seminar "Options for improv...
Ahmed Nasr Allah  (World Fish) • 2019 IFPRI Egypt Seminar "Options for improv...Ahmed Nasr Allah  (World Fish) • 2019 IFPRI Egypt Seminar "Options for improv...
Ahmed Nasr Allah (World Fish) • 2019 IFPRI Egypt Seminar "Options for improv...
 
ABO salinity presentation pnnl
ABO salinity presentation pnnlABO salinity presentation pnnl
ABO salinity presentation pnnl
 
Natural additives for fish - do we have to reinvent the wheel or is there a s...
Natural additives for fish - do we have to reinvent the wheel or is there a s...Natural additives for fish - do we have to reinvent the wheel or is there a s...
Natural additives for fish - do we have to reinvent the wheel or is there a s...
 
Nitrogen Transformations in Aquaponic Systems
Nitrogen Transformations in Aquaponic SystemsNitrogen Transformations in Aquaponic Systems
Nitrogen Transformations in Aquaponic Systems
 
A preliminary investigation into modelling an integrated seaweed (Ulva lactuc...
A preliminary investigation into modelling an integrated seaweed (Ulva lactuc...A preliminary investigation into modelling an integrated seaweed (Ulva lactuc...
A preliminary investigation into modelling an integrated seaweed (Ulva lactuc...
 
Reservoir
ReservoirReservoir
Reservoir
 
A pilot scale integrated seaweed (Ulva lactuca) & abalone (Haliotis midae) re...
A pilot scale integrated seaweed (Ulva lactuca) & abalone (Haliotis midae) re...A pilot scale integrated seaweed (Ulva lactuca) & abalone (Haliotis midae) re...
A pilot scale integrated seaweed (Ulva lactuca) & abalone (Haliotis midae) re...
 
NewsonDDCSP
NewsonDDCSPNewsonDDCSP
NewsonDDCSP
 
PROJECT REPORT PRESENTATION1
PROJECT  REPORT PRESENTATION1PROJECT  REPORT PRESENTATION1
PROJECT REPORT PRESENTATION1
 
Emma description
Emma descriptionEmma description
Emma description
 

Mais de Deborah Robertson-Andersson

Abstract: The Use of Sub-Tropical East Coast Copepod Species as Live Feed for...
Abstract: The Use of Sub-Tropical East Coast Copepod Species as Live Feed for...Abstract: The Use of Sub-Tropical East Coast Copepod Species as Live Feed for...
Abstract: The Use of Sub-Tropical East Coast Copepod Species as Live Feed for...Deborah Robertson-Andersson
 
Abstract: Linking nitrogen pollution in estuaries to rocky shores: A stable i...
Abstract: Linking nitrogen pollution in estuaries to rocky shores: A stable i...Abstract: Linking nitrogen pollution in estuaries to rocky shores: A stable i...
Abstract: Linking nitrogen pollution in estuaries to rocky shores: A stable i...Deborah Robertson-Andersson
 
Abstract: Using social media as a tool to track the social impact of plastic...
 Abstract: Using social media as a tool to track the social impact of plastic... Abstract: Using social media as a tool to track the social impact of plastic...
Abstract: Using social media as a tool to track the social impact of plastic...Deborah Robertson-Andersson
 
Linking nitrogen pollution in estuaries to rocky shores: A stable isotope app...
Linking nitrogen pollution in estuaries to rocky shores: A stable isotope app...Linking nitrogen pollution in estuaries to rocky shores: A stable isotope app...
Linking nitrogen pollution in estuaries to rocky shores: A stable isotope app...Deborah Robertson-Andersson
 
Can nature-based experiences affect an individual’s connection to nature with...
Can nature-based experiences affect an individual’s connection to nature with...Can nature-based experiences affect an individual’s connection to nature with...
Can nature-based experiences affect an individual’s connection to nature with...Deborah Robertson-Andersson
 
The use of rubrics in enhancing student's scientific writing skills in a vari...
The use of rubrics in enhancing student's scientific writing skills in a vari...The use of rubrics in enhancing student's scientific writing skills in a vari...
The use of rubrics in enhancing student's scientific writing skills in a vari...Deborah Robertson-Andersson
 
The use of rubrics in enhancing student's scientific writing skills in a vari...
The use of rubrics in enhancing student's scientific writing skills in a vari...The use of rubrics in enhancing student's scientific writing skills in a vari...
The use of rubrics in enhancing student's scientific writing skills in a vari...Deborah Robertson-Andersson
 
Abstract: Identifying Sub-tropical East Coast Copepods for Larviculture of Du...
Abstract: Identifying Sub-tropical East Coast Copepods for Larviculture of Du...Abstract: Identifying Sub-tropical East Coast Copepods for Larviculture of Du...
Abstract: Identifying Sub-tropical East Coast Copepods for Larviculture of Du...Deborah Robertson-Andersson
 
Aquaculture and Aquaponics: Going back to basics
Aquaculture and Aquaponics: Going back to basicsAquaculture and Aquaponics: Going back to basics
Aquaculture and Aquaponics: Going back to basicsDeborah Robertson-Andersson
 
Abstract: Aquaponics and aquaculture going back to basics
Abstract: Aquaponics and aquaculture going back to basicsAbstract: Aquaponics and aquaculture going back to basics
Abstract: Aquaponics and aquaculture going back to basicsDeborah Robertson-Andersson
 
Can Computers count bacteria? Using macro-programming as a tool to improve sp...
Can Computers count bacteria? Using macro-programming as a tool to improve sp...Can Computers count bacteria? Using macro-programming as a tool to improve sp...
Can Computers count bacteria? Using macro-programming as a tool to improve sp...Deborah Robertson-Andersson
 
Bacterial Numbers, Biomass and Productivity within the Kwa-Zulu Natal Bight: ...
Bacterial Numbers, Biomass and Productivity within the Kwa-Zulu Natal Bight: ...Bacterial Numbers, Biomass and Productivity within the Kwa-Zulu Natal Bight: ...
Bacterial Numbers, Biomass and Productivity within the Kwa-Zulu Natal Bight: ...Deborah Robertson-Andersson
 
Microplastic s in marine organisms in KZN: A new conservation threat?
Microplastic s in marine organisms in KZN: A new conservation threat? Microplastic s in marine organisms in KZN: A new conservation threat?
Microplastic s in marine organisms in KZN: A new conservation threat? Deborah Robertson-Andersson
 
The Use of Sub-Tropical East Coast Copepod Species as live feed for fish larv...
The Use of Sub-Tropical East Coast Copepod Species as live feed for fish larv...The Use of Sub-Tropical East Coast Copepod Species as live feed for fish larv...
The Use of Sub-Tropical East Coast Copepod Species as live feed for fish larv...Deborah Robertson-Andersson
 
Microplastic uptake and retention in Perma perna (L.); Tripneustes gratula (L...
Microplastic uptake and retention in Perma perna (L.); Tripneustes gratula (L...Microplastic uptake and retention in Perma perna (L.); Tripneustes gratula (L...
Microplastic uptake and retention in Perma perna (L.); Tripneustes gratula (L...Deborah Robertson-Andersson
 
Using Social Media as a Tool to Track the Social Impact of Plastic Pollution ...
Using Social Media as a Tool to Track the Social Impact of Plastic Pollution ...Using Social Media as a Tool to Track the Social Impact of Plastic Pollution ...
Using Social Media as a Tool to Track the Social Impact of Plastic Pollution ...Deborah Robertson-Andersson
 
A Novel Methodology for the Separation of Known Suspended Microplastics (<...
A Novel Methodology for the Separation of Known Suspended Microplastics (<...A Novel Methodology for the Separation of Known Suspended Microplastics (<...
A Novel Methodology for the Separation of Known Suspended Microplastics (<...Deborah Robertson-Andersson
 
Aquacultural Determination of the Ecophysiological Effects of Microplastic Co...
Aquacultural Determination of the Ecophysiological Effects of Microplastic Co...Aquacultural Determination of the Ecophysiological Effects of Microplastic Co...
Aquacultural Determination of the Ecophysiological Effects of Microplastic Co...Deborah Robertson-Andersson
 
INTEGRATED SEAWEED/ABALONE MULTITROPHIC RECIRCULATING AQUACULTURE (IMTA) IN S...
INTEGRATED SEAWEED/ABALONE MULTITROPHIC RECIRCULATING AQUACULTURE (IMTA) IN S...INTEGRATED SEAWEED/ABALONE MULTITROPHIC RECIRCULATING AQUACULTURE (IMTA) IN S...
INTEGRATED SEAWEED/ABALONE MULTITROPHIC RECIRCULATING AQUACULTURE (IMTA) IN S...Deborah Robertson-Andersson
 

Mais de Deborah Robertson-Andersson (20)

Abstract: The Use of Sub-Tropical East Coast Copepod Species as Live Feed for...
Abstract: The Use of Sub-Tropical East Coast Copepod Species as Live Feed for...Abstract: The Use of Sub-Tropical East Coast Copepod Species as Live Feed for...
Abstract: The Use of Sub-Tropical East Coast Copepod Species as Live Feed for...
 
Abstract: Linking nitrogen pollution in estuaries to rocky shores: A stable i...
Abstract: Linking nitrogen pollution in estuaries to rocky shores: A stable i...Abstract: Linking nitrogen pollution in estuaries to rocky shores: A stable i...
Abstract: Linking nitrogen pollution in estuaries to rocky shores: A stable i...
 
Abstract: Using social media as a tool to track the social impact of plastic...
 Abstract: Using social media as a tool to track the social impact of plastic... Abstract: Using social media as a tool to track the social impact of plastic...
Abstract: Using social media as a tool to track the social impact of plastic...
 
Linking nitrogen pollution in estuaries to rocky shores: A stable isotope app...
Linking nitrogen pollution in estuaries to rocky shores: A stable isotope app...Linking nitrogen pollution in estuaries to rocky shores: A stable isotope app...
Linking nitrogen pollution in estuaries to rocky shores: A stable isotope app...
 
Communication Blah Blah
Communication Blah BlahCommunication Blah Blah
Communication Blah Blah
 
Can nature-based experiences affect an individual’s connection to nature with...
Can nature-based experiences affect an individual’s connection to nature with...Can nature-based experiences affect an individual’s connection to nature with...
Can nature-based experiences affect an individual’s connection to nature with...
 
The use of rubrics in enhancing student's scientific writing skills in a vari...
The use of rubrics in enhancing student's scientific writing skills in a vari...The use of rubrics in enhancing student's scientific writing skills in a vari...
The use of rubrics in enhancing student's scientific writing skills in a vari...
 
The use of rubrics in enhancing student's scientific writing skills in a vari...
The use of rubrics in enhancing student's scientific writing skills in a vari...The use of rubrics in enhancing student's scientific writing skills in a vari...
The use of rubrics in enhancing student's scientific writing skills in a vari...
 
Abstract: Identifying Sub-tropical East Coast Copepods for Larviculture of Du...
Abstract: Identifying Sub-tropical East Coast Copepods for Larviculture of Du...Abstract: Identifying Sub-tropical East Coast Copepods for Larviculture of Du...
Abstract: Identifying Sub-tropical East Coast Copepods for Larviculture of Du...
 
Aquaculture and Aquaponics: Going back to basics
Aquaculture and Aquaponics: Going back to basicsAquaculture and Aquaponics: Going back to basics
Aquaculture and Aquaponics: Going back to basics
 
Abstract: Aquaponics and aquaculture going back to basics
Abstract: Aquaponics and aquaculture going back to basicsAbstract: Aquaponics and aquaculture going back to basics
Abstract: Aquaponics and aquaculture going back to basics
 
Can Computers count bacteria? Using macro-programming as a tool to improve sp...
Can Computers count bacteria? Using macro-programming as a tool to improve sp...Can Computers count bacteria? Using macro-programming as a tool to improve sp...
Can Computers count bacteria? Using macro-programming as a tool to improve sp...
 
Bacterial Numbers, Biomass and Productivity within the Kwa-Zulu Natal Bight: ...
Bacterial Numbers, Biomass and Productivity within the Kwa-Zulu Natal Bight: ...Bacterial Numbers, Biomass and Productivity within the Kwa-Zulu Natal Bight: ...
Bacterial Numbers, Biomass and Productivity within the Kwa-Zulu Natal Bight: ...
 
Microplastic s in marine organisms in KZN: A new conservation threat?
Microplastic s in marine organisms in KZN: A new conservation threat? Microplastic s in marine organisms in KZN: A new conservation threat?
Microplastic s in marine organisms in KZN: A new conservation threat?
 
The Use of Sub-Tropical East Coast Copepod Species as live feed for fish larv...
The Use of Sub-Tropical East Coast Copepod Species as live feed for fish larv...The Use of Sub-Tropical East Coast Copepod Species as live feed for fish larv...
The Use of Sub-Tropical East Coast Copepod Species as live feed for fish larv...
 
Microplastic uptake and retention in Perma perna (L.); Tripneustes gratula (L...
Microplastic uptake and retention in Perma perna (L.); Tripneustes gratula (L...Microplastic uptake and retention in Perma perna (L.); Tripneustes gratula (L...
Microplastic uptake and retention in Perma perna (L.); Tripneustes gratula (L...
 
Using Social Media as a Tool to Track the Social Impact of Plastic Pollution ...
Using Social Media as a Tool to Track the Social Impact of Plastic Pollution ...Using Social Media as a Tool to Track the Social Impact of Plastic Pollution ...
Using Social Media as a Tool to Track the Social Impact of Plastic Pollution ...
 
A Novel Methodology for the Separation of Known Suspended Microplastics (<...
A Novel Methodology for the Separation of Known Suspended Microplastics (<...A Novel Methodology for the Separation of Known Suspended Microplastics (<...
A Novel Methodology for the Separation of Known Suspended Microplastics (<...
 
Aquacultural Determination of the Ecophysiological Effects of Microplastic Co...
Aquacultural Determination of the Ecophysiological Effects of Microplastic Co...Aquacultural Determination of the Ecophysiological Effects of Microplastic Co...
Aquacultural Determination of the Ecophysiological Effects of Microplastic Co...
 
INTEGRATED SEAWEED/ABALONE MULTITROPHIC RECIRCULATING AQUACULTURE (IMTA) IN S...
INTEGRATED SEAWEED/ABALONE MULTITROPHIC RECIRCULATING AQUACULTURE (IMTA) IN S...INTEGRATED SEAWEED/ABALONE MULTITROPHIC RECIRCULATING AQUACULTURE (IMTA) IN S...
INTEGRATED SEAWEED/ABALONE MULTITROPHIC RECIRCULATING AQUACULTURE (IMTA) IN S...
 

Último

fourth grading exam for kindergarten in writing
fourth grading exam for kindergarten in writingfourth grading exam for kindergarten in writing
fourth grading exam for kindergarten in writingTeacherCyreneCayanan
 
Sports & Fitness Value Added Course FY..
Sports & Fitness Value Added Course FY..Sports & Fitness Value Added Course FY..
Sports & Fitness Value Added Course FY..Disha Kariya
 
Ecosystem Interactions Class Discussion Presentation in Blue Green Lined Styl...
Ecosystem Interactions Class Discussion Presentation in Blue Green Lined Styl...Ecosystem Interactions Class Discussion Presentation in Blue Green Lined Styl...
Ecosystem Interactions Class Discussion Presentation in Blue Green Lined Styl...fonyou31
 
Key note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdfKey note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdfAdmir Softic
 
General AI for Medical Educators April 2024
General AI for Medical Educators April 2024General AI for Medical Educators April 2024
General AI for Medical Educators April 2024Janet Corral
 
APM Welcome, APM North West Network Conference, Synergies Across Sectors
APM Welcome, APM North West Network Conference, Synergies Across SectorsAPM Welcome, APM North West Network Conference, Synergies Across Sectors
APM Welcome, APM North West Network Conference, Synergies Across SectorsAssociation for Project Management
 
microwave assisted reaction. General introduction
microwave assisted reaction. General introductionmicrowave assisted reaction. General introduction
microwave assisted reaction. General introductionMaksud Ahmed
 
Activity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdfActivity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdfciinovamais
 
Interactive Powerpoint_How to Master effective communication
Interactive Powerpoint_How to Master effective communicationInteractive Powerpoint_How to Master effective communication
Interactive Powerpoint_How to Master effective communicationnomboosow
 
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...christianmathematics
 
9548086042 for call girls in Indira Nagar with room service
9548086042  for call girls in Indira Nagar  with room service9548086042  for call girls in Indira Nagar  with room service
9548086042 for call girls in Indira Nagar with room servicediscovermytutordmt
 
Web & Social Media Analytics Previous Year Question Paper.pdf
Web & Social Media Analytics Previous Year Question Paper.pdfWeb & Social Media Analytics Previous Year Question Paper.pdf
Web & Social Media Analytics Previous Year Question Paper.pdfJayanti Pande
 
Measures of Dispersion and Variability: Range, QD, AD and SD
Measures of Dispersion and Variability: Range, QD, AD and SDMeasures of Dispersion and Variability: Range, QD, AD and SD
Measures of Dispersion and Variability: Range, QD, AD and SDThiyagu K
 
A Critique of the Proposed National Education Policy Reform
A Critique of the Proposed National Education Policy ReformA Critique of the Proposed National Education Policy Reform
A Critique of the Proposed National Education Policy ReformChameera Dedduwage
 
Accessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impactAccessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impactdawncurless
 
Student login on Anyboli platform.helpin
Student login on Anyboli platform.helpinStudent login on Anyboli platform.helpin
Student login on Anyboli platform.helpinRaunakKeshri1
 

Último (20)

fourth grading exam for kindergarten in writing
fourth grading exam for kindergarten in writingfourth grading exam for kindergarten in writing
fourth grading exam for kindergarten in writing
 
Sports & Fitness Value Added Course FY..
Sports & Fitness Value Added Course FY..Sports & Fitness Value Added Course FY..
Sports & Fitness Value Added Course FY..
 
Ecosystem Interactions Class Discussion Presentation in Blue Green Lined Styl...
Ecosystem Interactions Class Discussion Presentation in Blue Green Lined Styl...Ecosystem Interactions Class Discussion Presentation in Blue Green Lined Styl...
Ecosystem Interactions Class Discussion Presentation in Blue Green Lined Styl...
 
Código Creativo y Arte de Software | Unidad 1
Código Creativo y Arte de Software | Unidad 1Código Creativo y Arte de Software | Unidad 1
Código Creativo y Arte de Software | Unidad 1
 
Key note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdfKey note speaker Neum_Admir Softic_ENG.pdf
Key note speaker Neum_Admir Softic_ENG.pdf
 
General AI for Medical Educators April 2024
General AI for Medical Educators April 2024General AI for Medical Educators April 2024
General AI for Medical Educators April 2024
 
APM Welcome, APM North West Network Conference, Synergies Across Sectors
APM Welcome, APM North West Network Conference, Synergies Across SectorsAPM Welcome, APM North West Network Conference, Synergies Across Sectors
APM Welcome, APM North West Network Conference, Synergies Across Sectors
 
microwave assisted reaction. General introduction
microwave assisted reaction. General introductionmicrowave assisted reaction. General introduction
microwave assisted reaction. General introduction
 
Activity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdfActivity 01 - Artificial Culture (1).pdf
Activity 01 - Artificial Culture (1).pdf
 
Advance Mobile Application Development class 07
Advance Mobile Application Development class 07Advance Mobile Application Development class 07
Advance Mobile Application Development class 07
 
Interactive Powerpoint_How to Master effective communication
Interactive Powerpoint_How to Master effective communicationInteractive Powerpoint_How to Master effective communication
Interactive Powerpoint_How to Master effective communication
 
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...
Explore beautiful and ugly buildings. Mathematics helps us create beautiful d...
 
9548086042 for call girls in Indira Nagar with room service
9548086042  for call girls in Indira Nagar  with room service9548086042  for call girls in Indira Nagar  with room service
9548086042 for call girls in Indira Nagar with room service
 
Web & Social Media Analytics Previous Year Question Paper.pdf
Web & Social Media Analytics Previous Year Question Paper.pdfWeb & Social Media Analytics Previous Year Question Paper.pdf
Web & Social Media Analytics Previous Year Question Paper.pdf
 
Mattingly "AI & Prompt Design: The Basics of Prompt Design"
Mattingly "AI & Prompt Design: The Basics of Prompt Design"Mattingly "AI & Prompt Design: The Basics of Prompt Design"
Mattingly "AI & Prompt Design: The Basics of Prompt Design"
 
Mattingly "AI & Prompt Design: Structured Data, Assistants, & RAG"
Mattingly "AI & Prompt Design: Structured Data, Assistants, & RAG"Mattingly "AI & Prompt Design: Structured Data, Assistants, & RAG"
Mattingly "AI & Prompt Design: Structured Data, Assistants, & RAG"
 
Measures of Dispersion and Variability: Range, QD, AD and SD
Measures of Dispersion and Variability: Range, QD, AD and SDMeasures of Dispersion and Variability: Range, QD, AD and SD
Measures of Dispersion and Variability: Range, QD, AD and SD
 
A Critique of the Proposed National Education Policy Reform
A Critique of the Proposed National Education Policy ReformA Critique of the Proposed National Education Policy Reform
A Critique of the Proposed National Education Policy Reform
 
Accessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impactAccessible design: Minimum effort, maximum impact
Accessible design: Minimum effort, maximum impact
 
Student login on Anyboli platform.helpin
Student login on Anyboli platform.helpinStudent login on Anyboli platform.helpin
Student login on Anyboli platform.helpin
 

CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT

  • 1. Robertson-Andersson, D. V .; Bolton, J. B.; Anderson, R. J. & Probyn, T. A. CULTIVATION OF ULVA IN AQUACULTURE EFFLUENT AFASA project meeting 2003
  • 2.
  • 3.
  • 4.
  • 5.
  • 6. Longitudinal profile of tanks Transverse profile of tanks 5 m 1 m
  • 7.
  • 8. Small tanks Medium tanks 0.5 m 1 m 1 m 1 m
  • 9. 0 1 2 3 4 5 6 7 8 sea shaded sea fert shaded fert abalone shaded abalone SGR % day -1 J J A S O N D J F M A M J J A S O RESULTS SGR of Ulva from June ‘01 to October ‘02 in sea, fertilized & abalone effluent water. (2) where water exchanges increased at I & J 2
  • 10. RESULTS RGR of Ulva from June ‘01 to October ‘02 in sea, Turbot & abalone effluent water at JSP.
  • 11. RESULTS SGR of Ulva from June ‘01 to October ‘02 in sea, Turbot & abalone effluent water at JSP.
  • 12. RESULTS SGR of Ulva from June ‘01 to October ‘02 in sea, Turbot & abalone effluent water at JSP.
  • 13.
  • 14. RESULTS Myrionema strangulans (MS) BAD INFECTION DEAD HEALTHY INFECTED
  • 15. RESULTS MS infestation of Ulva thalli
  • 16.
  • 17.
  • 18.
  • 19.
  • 20. RESULTS Tissue Nitrogen vs. Thallus Colour Tissue nitrogen vs. thallus colour
  • 21.
  • 23. RESULTS ECONOMICS Abalone growth curves
  • 24. RESULTS 31.2 % increase in weight using rotation diet vs kelp only diet over 9 months Cost: $30 per kg X R 8 = R 240 10 (100g) abalone in 1 kg cost per abalone = R 24 less profit and freight = R 15 per abalone ECONOMICS
  • 25. RESULTS Increase in SGR: 49 – 68 % per year Normal Growth to 100g = 5 years accelerated growth = 3.3 – 3.6 years @ R 15 per abalone New cost : R 12.40 – R 13.50 per abalone Savings: 17 – 28 % R 1.50 - R 2.60 per abalone ECONOMICS
  • 26. RESULTS Average farm (50 tons @ 100 g per abalone) = 500 000 100g abalone X R 1.50 or R 2.60 EQUALS Savings: R 800 000 – R 1.3 million ECONOMICS
  • 27.
  • 28.   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