Surveying shrimp aquaculture pond activity using multitemporal VHSR satellite images - case study from the Perancak estuary, Bali, Indonesia
|Author(s)||Gusmawati Niken1, 3, Soulard Benoit2, Selmaoui-Folcher Nazha1, Proisy Christophe4, 5, Mustafa Akhmad3, Le Gendre Romain2, Laugier Thierry2, Lemonnier Hugues2|
|Affiliation(s)||1 : Univ New Caledonia, PPME, BP R4, Noumea 98851, New Caledonia.
2 : IFREMER LEAD NC, BP 2059, Noumea 98846, New Caledonia.
3 : Minist Marine Affairs & Fisheries, Agcy Res & Dev Marine & Fisheries, Jakarta, Indonesia.
4 : IRD UMR AMAP, BotAn & BioinforMat Architecture Plantes, TAA51-PS2,Blvd Lironde, Montpellier 5, France.
5 : CNRS, Lab Geomat & Appl Informat LIAG, French Inst Pondicherry IFP, MAEE USR 3330,UMIFRE 21, Pondicherry, India.
|Source||Marine Pollution Bulletin (0025-326X) (Pergamon-elsevier Science Ltd), 2018-06 , Vol. 131 , N. Part.B , P. 49-60|
|WOS© Times Cited||22|
|Keyword(s)||Aquaculture, Abandoned ponds, VHSR images, Indicator, Supervised classification, Spatial and temporal survey|
From the 1980's, Indonesian shrimp production has continuously increased through a large expansion of cultured areas and an intensification of the production. As consequences of diseases and environmental degradations linked to this development, there are currently 250,000 ha of abandoned ponds in Indonesia. To implement effective procedure to undertake appropriate aquaculture ecosystem assessment and monitoring, an integrated indicator based on four criteria using very high spatial optical satellite images, has been developed to discriminate active from abandoned ponds. These criteria were: presence of water, aerator, feeding bridge and vegetation. This indicator has then been applied to the Perancak estuary, a production area in decline, to highlight the abandonment dynamic between 2001 and 2015. Two risk factors that could contribute to explain dynamics of abandonment were identified: climate conditions and pond locations within the estuary, suggesting that a spatial approach should be integrated in planning processes to operationalize pond rehabilitation.