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Published case studies
Case studies satisfy two needs:
  • They call attention to a wide variety of applications that have contributed to solving important issues that affect the sustainability of aquaculture and inland fisheries.
  • They also provide information usually lacking from scientific papers and reports, namely, in what ways, and with what commitments of time and specialized personnel the work has been completed.
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Case Studies  (14)
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TitleMapping coastal aquaculture and fisheries structures by satellite imaging radar. Case study of the Lingayen Gulf, the Philippines.
AuthorTravaglia,C.; Profeti,G,; Aguilar-Manjarrez, J,; Lopez, N.
Original Publication ReferenceTravaglia, C.; Profeti, G.;Aguilar-Manjarrez, J.; Lopez, N.A. 2004. Mapping coastal aquaculture and fisheries structures by satellite imaging radar. Case study of the Lingayen Gulf, the Philippines. FAO Fisheries Technical Paper. No. 459. Rome, FAO. 2004. 45p.(available at: http://www.fao.org/documents/show_cdr.asp?url_file=/docrep/007/y5319e/y5319e00.htm).
Spatial Tool Remote Sensing
Aquaculture Issue Addressed Inventory and monitoring of aquaculture and the environment
Abstract / DescriptionInventory and monitoring of coastal aquaculture and fisheries structures provide important baseline data for decision-making in planning and development, including regulatory laws, environmental protection and revenue collection. Mapping these structures can be performed with good accuracy and at regular intervals by satellite remote sensing, which allows observation of vast areas, often of difficult accessibility, at a fraction of the cost of traditional surveys. Satellite imaging radar (SAR) data are unique for this task not only for their inherent all-weather capabilities, very important as aquaculture activities mainly occur in tropical and subtropical areas, but essentially because the backscatter from the structure components allows for their identification and separation from other features. The area selected and object of the study has been Lingayen Gulf, sited in northwestern Luzon Island, the Philippines, where all these structures of interest occur. Field verification of the methodology resulted in the following accuracy: fishponds 95 percent, fish pens 100 percent. Mapping accuracy for fish cages was estimated at 90 percent and for fish traps at 70 percent. The study is based on interpretation of SAR satellite data and a detailed image analysis procedure is described. The report aims at the necessary technology transfer for an operational use of the approach indicated in other similar environments.
Main Environment Brackishwater
Culture System Cages
Organism Division (FAO ISSCAAP) Marine fishes
Genera and SpeciesMilkfish (Chanos chanos), Rabbit fishes (Siganus spp.)
Target Country PHILIPPINES
Target AudienceThe study was conducted in the Lingayen Gulf, the Philippines but has applicability in other similar environments worldwide.
Duration of the Study and Year Begun6 months, the study began in 2003 and ended in 2004.
Personnel InvolvedRemote sensing specialist with a working knowledge of remote sensing applications in fisheries and aquaculture (FAO Remote Sensing Officer); assisted with the design of the study and analyses, and managed the project; full time; Fisheries and aquaculture specialist with a working knowledge of GIS and remote sensing applications (FAO Fishery Resources Officer); assisted with the design of the study; part-time for the duration; Digital image processing specialist (Consultant and Professor); modelling, image processing and analyses; full time; Philippine Aquaculturist who wrote the description of the structures: fish pens, cages and traps and played a key role in ground verification; part-time for the duration; Field verification personnel from BFAR (4); full time for short duration; Advisers at large (4), who provided data and advice from time to time.
63 Topics - 1737 Knowledge Objects - 403 Members - 6 Editors
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