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Three categories of environmental survey for aquaculture
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Three categories of environmental survey for aquaculture

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Three categories of environmental survey for aquaculture were developed ranging from low cost simple surveys to highly detailed surveys

Three categories of environmental survey for aquaculture were developed ranging from low cost simple surveys to highly detailed surveys

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  • 1. Development of 3 categories of environmental monitoring surveys Bureau of Fisheries and Aquatic Resources Marine Environment and Resources Foundation THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 1
  • 2. Uses of monitoring • Check level of impact • Check extent of impact • Check if – production over carrying capacity, – too many licenses issued • Check if impact – getting worse, – staying the same, – getting better THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 2
  • 3. Production data • • • • • • • Number of fish stocked Present size Food fed per day Market size Culture period Survival Food conversion rate THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 3
  • 4. Environmental data • • • • • • • • Cage layouts and net sizes Depth recordings Current readings Water dispersion Condition of the sea bed sediments Oxygen levels in the water column Turbidity of the water column Nutrients in the water column THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 4
  • 5. 3 categories of environmental survey The project is developing 3 categories of environmental survey that can identify impacts of aquaculture. Category 1. low cost simple survey that can be undertaken by local Government or farmer Category 2. Medium level survey that requires some equipment that can be undertaken by Government regional offices, Protected Area Management and other aquaculture management organisations Category 3. Comprehensive survey (baseline survey) to be undertaken by Government research Institutes or similar, scientists for EIA, baseline or detailed impact studies. THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 5
  • 6. Survey costs CATEGORY I CATEGORY II CATEGORY III Level Simple Intermediate Full Quantitative Client Large Farmer/LGU BFAR Regional, IFARMC, PAMBI Science + Govt research Institutes US $ 1,000 US $10,000 US $ 100,000 US$ 25 US$ 250 US$ 2,500 Equipment Cost Consumables Survey cost THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 6
  • 7. Category 1 Scope: Simple cheap, cost effective survey Aimed at: LGU/Farmer This survey measures the following parameters: • Cage layout and sizes • Depth recordings (bathymetry) of the area around the cages • Current (water movement) – estimate speed and direction of water movement around the cages • Condition of the sea bed sediments • Oxygen levels in the water column • Turbidity of the water column THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 7
  • 8. Category 1 CATEGORY I Bathymetry Lead-line and Map Turbidity Secchi disc Salinity/temp/depth/O2/ Temp/Salinity (hydrometer), O2 test kit Water col. Nutrients Water sampler (eg Marpet) Benthos sampling Mini-corer Taxonomy Sensory/presence/absence Sediment (physical and chemical) Hydrography -- MET data -- Waste feed Tray THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 8
  • 9. Category I - US $ 1000 / 25 Equipment (US $ 440/25) Price (US$) Thin rope + marker + weight 10 Secchi + rope + marker 20 Temperature 5 Hydrometer 10 O2 test kit 50 Nutrient test kit 200 Water sampler (cheap) 200 Coring device 75 Feeding tray 20 Ropes 25 Digital camera 250 THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 9
  • 10. Classification Classification Good Intermediate Impacted Sediment Animals present Light colour No smell Some animals present Thin black on top of normal sediment Some or no smell Little or no animals Deep black or all black layer strong H2S smell Water column Secchi depth Secchi depth less than 3 - 5 m Secchi depth less than 3 m Nutrients NH4 < 0.02 0.02 – 0.05 > 0.05 Nutrients NO2 < 0.05 0.05 – 0.10 > 0.10 Oxygen Above 6 mg/l Between 4 and 6 mg/l Less than 4 mg/l THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 10
  • 11. Equipment for category 1 THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 11
  • 12. Category 2 Scope: Can be undertaken by a technician, medium cost, cost effective survey Aimed at: Government regional offices, Protected Area Management and other aquaculture management organisations This survey measures the following parameters: • Cage layout and sizes  • Depth recordings (bathymetry) of the area around the  cages  • Current (water movement) – estimate speed and  direction of water movement around the cages  • Condition of the sea bed sediments (semi-quantitative) • Oxygen, salinity and nutrient levels in the water column  • Turbidity of the water column  THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 12
  • 13. Category 2 CATEGORY II Bathymetry Hand-held sounder + GPS Turbidity Secchi disc Salinity/temp/depth/O2/ Temp/Salinity (hydrometer/refractometer? /O2 (O2 meter) Water col. Nutrients Water sampler Niskin Benthos sampling Grab (toy) or corer Taxonomy Semi quantitative – major taxa Sediment (physical and chemical) Water content/PSA Hydrography Drogues CM (cheap) MET data MET station/handheld anemometer Waste feed Tray Analysis of results Semi- Quantitative analysis of aquaculture impact THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 13
  • 14. Category 2 - US $ 10,000 / 250 Category II (US $ 7,170/200) Price (US$) Handheld sounder 250 GPS 350 Secchi disk + rope 20 Temp/sal/O2 meter 800 5 L Water sampler/Niskin 600 Grab (toy) or corer 800 Drying oven 800 Scales + 0.001 500 PSA sieves (?)0.50, shaker (2 mm, 1 mm, 0.5, 0.25, 0.125) Drogues Met. Station 2,000 125 1,000 Handheld anemometer 200 Feeding tray 25 Rope 50 Weights 50 Nutrient test kits 200 Storage boxes 500 THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 14
  • 15. Equipment for category 2 THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 15
  • 16. Category 3 Scope: Comprehensive survey (baseline survey) Aimed at: Government research Institutes or similar, scientists for EIA, baseline or detailed impact studies This survey measures the following parameters: • Cage layout, sizes and GPS position • Depth recordings (bathymetry) of the area around the cages using sonar and GPS • Current (water movement) – estimate speed and direction of water movement around the cages • Condition of the sea bed sediments • Oxygen, salinity, chlorophyll and nutrient levels in the water column • Turbidity of the water column THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 16
  • 17. Category 3 CATEGORY III Bathymetry Echo sounder + GPS Turbidity Secchi + Turbidity meter Salinity/temp/depth/O2/ CTDO Water col. Nutrients Niskin bottle (field) + lab analysis (any depth) Benthos sampling Grab (0.05 m2)/Core + equipment + chemicals Taxonomy Quantitative (families) Sediment (physical and chemical) PSA/water content Redox Redox/LOI Hydrography Current meters and Drogues MET data MET station Waste feed Tray Analysis of results Baseline survey. Quantitative analysis of impact THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 17
  • 18. Category 3 – US $ 100,000/2,500 Category III (US$ 100,000/2,500) Echo sounder + GPS (integrated) Price US $ 1,500 Secchi disk 20 Turbidmeter + CTDO 16,000 Niskin 600 Chemicals/filters, Lab equipment 200 Grab (0.05 m2), core + sieves + equipment 200 Coultier counter or equivalent 250 Redox meter + probe + sol. 2,000 Muffle furnace 4,000 Current meters (3) 18,000 profiler + frame + batteries 34,000 Mooring equipment 400 Drogues 125 Met. Station 1,000 Feeding tray 25 Storage boxes 500 THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 18
  • 19. Equipment for category 3 THEME: Bridging the gaps in the Philippine Aquaculture “Hotspots” © www.akvaplan.niva.no 19

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