Monitoring mangrove forests after aquaculture abandonment using time series of very high spatial resolution satellite images: A case study from the Perancak estuary, Bali, Indonesia
|Author(s)||Proisy Christophe1, 2, Viennois Gaelle1, Sidik Frida3, 4, Andayani Ariani4, Enright James Anthony5, Guitet Stephan6, Gusmawati Niken4, 7, 8, Lemonnier Hugues8, Muthusankar Gowrappan2, Olagoke Adewole1, 9, Prosperi Juliana1, Rahmania Rinny1, 4, Ricout Anais2, Soulard Benoit8, Suhardjono 10|
|Affiliation(s)||1 : Univ Montpellier, INRA, CIRAD, AMAP,IRD,CNRS, Montpellier, France.
2 : French Inst Pondicherry, Geomat & Appl Informat Lab LIAG, Pondicherry, India.
3 : Agcy Marine & Fisheries Res, Minist Marine Affairs & Fisheries, Inst Marine Res & Observat, Perancak, Bali, Indonesia.
4 : Agcy Marine & Fisheries Res, Minist Marine Affairs & Fisheries, Jakarta, Indonesia.
5 : Mangrove Act Project, Trang, Thailand.
6 : GIP ECOFOR, Paris, France.
7 : Univ New Caledonia, Noumea, New Caledonia.
8 : IFREMER, LEAD NC, Noumea, New Caledonia.
9 : Tech Univ, Inst Forest Growth & Comp Sci, Dresden, Germany.
10 : Indonesian Inst Sci LIPI, Herbarium Bogoriense, Bogor, Indonesia.
|Source||Marine Pollution Bulletin (0025-326X) (Pergamon-elsevier Science Ltd), 2018-06 , Vol. 131 , N. Part.B , P. 61-71|
|WOS© Times Cited||19|
|Keyword(s)||Mangroves, Rehabilitation, Rhizophora plantations, Shrimp ponds, Remote sensing, ICZM|
Revegetation of abandoned aquaculture regions should be a priority for any integrated coastal zone management (ICZM). This paper examines the potential of a matchless time series of 20 very high spatial resolution (VHSR) optical satellite images acquired for mapping trends in the evolution of mangrove forests from 2001 to 2015 in an estuary fragmented into aquaculture ponds. Evolution of mangrove extent was quantified through robust multitemporal analysis based on supervised image classification. Results indicated that mangroves are expanding inside and outside ponds and over pond dykes. However, the yearly expansion rate of vegetation cover greatly varied between replanted ponds. Ground truthing showed that only Rhizophora species had been planted, whereas natural mangroves consist of Avicennia and Sonneratia species. In addition, the dense Rhizophora plantations present very low regeneration capabilities compared with natural mangroves. Time series of VHSR images provide comprehensive and intuitive level of information for the support of ICZM.