Using gis for site selection for Mariculture Parks in the Philippines
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Transcript of Using gis for site selection for Mariculture Parks in the Philippines
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Use of Geographical Information
System (GIS) for site selection
Rune Palerud
Akvaplan-niva AS
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Use of GIS for site selection
• Geographic information system (GIS) is a system
that captures, stores, analyses and manages data
that are associated with different attributes which
are spatially referenced to the earth
• A GIS-based multi-criteria evaluation model is
used to identify the suitable sites for aquaculture.
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Use of GIS for site selection – principal of the GIS model
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Main site selection criteria for the GIS model
Bio-physical
• Shore line contour
• Depth profile
• Maximum wave height
Infrastructure
• Accessibility to the site –
roads, transportation, airport, port, etc.
• Infrastructure and utilities -
facilities, security, communication, electricity, fre
shwater
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Basemap –Shore line contour
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Basemap – Depth profile
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Basemap – From wave model Wind N-NE
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Basemap - Infrastructure
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Main site selection criteria for GIS model
Environmental
• Proximity to
– sensitive habitats
– Sensitive species
Hazards
• Pollution (organic and inorganic)
Other
• Potential for expansion - availability of adjacent
area
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Sensitive habitats – Coral reefs
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Preferred criteria for cage farming
• Suitable depth
– 15 to 50 meters depth
• Infrastructure
– Road preferable less then 1 km away
– Harbors preferable less then 5 km away
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Criteria for cage farming - depth
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Criteria for cage farming – Roads and Ports
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Excluding factors
• Wave
– More then 1 m height
• Rivers
– Large river 3 km, other river 1,5 km
• Sensitive areas
– Coral reef 300 m away
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Excluding factors – wave height
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Excluding factors – River outlets
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Excluding factors – Coral reefs
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Final results for the GIS analyses
• All maps combined give the final
results for the GIS analyses
• Based on the criteria used, four
potential areas were identified (*).
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Final results for the GIS analyses
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Final results for the GIS analyses
These potential areas can then be further
investigated with field surveys (ground
truthing) to be able to make the final
decision on which areas are suitable for
fish farming.
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SALAMAT PO
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Calauag
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Lopez
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Alabat
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Perez