Sutrisno, Bagus Oktori
Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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THE CHANGE OF MANGROVE COVERAGE IN SEGARAANAKAN LAGOON OF CILACAP – CENTRAL JAVA Sutrisno, Bagus Oktori; Prayitno, Slamet Budi
Indonesian Fisheries Research Journal Vol 19, No 2 (2013): (December 2013)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2008.135 KB) | DOI: 10.15578/ifrj.19.2.2013.81-84

Abstract

Mangrove ecosystem play san important role in coastal area. In several region mangrove coverage had decreased caused by various factors such as landuse change, erosion and sedimentation. Mangrove ecosystem in Segara Anakan Lagoon had decreased and damaged as well. The current work aimed to analyze the change of mangrove coverage in Segara Anakan Lagoon. A remote sensing analysis was conducted to deployeight years of satellite imagery data from 2002 to 2009. Analysis method included NDVI algorythm map processing which was associated with vegetation coverage in the area of interest. The results show that mangrove coverage in Segara Anakan Lagoon had decreased from 9,163.19 ha in 2002 to 8,433 ha in 2003, 7,764 ha in 2004, 7,252.72 ha in 2005 and 6,213.80 ha in 2006 respectvely. Further decrease occured in 2007 to 5,767.16 ha, 4,987 ha in 2008 and finally to 4,267.13 ha in 2009. Mangrove coverage is decreased approximately 677 ha each year. This decrease might be caused by several factors such as conversion of mangrove coverage to other utilization such as farming, housing and ponds, and high sedimentation rate from Citanduy river. These results suggest that management of mangrove area is needed to support coastal resources sustainability in Cilacap. Therefore, replantation andconservation of mangrove area could be applied for management purposes.
BENEFITS OF MANGROVE MANAGEMENT FOR PRAWN FISHING AND TIMBER PRODUCTION Sutrisno, Bagus Oktori; Prayitno, Slamet Budi
Indonesian Fisheries Research Journal Vol 19, No 2 (2013): (December 2013)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2579.838 KB) | DOI: 10.15578/ifrj.19.2.2013.107-113

Abstract

Integrated fisheries resource management is absolutely needed to achieve optimal result and sustainable utilization. This research aims to analyze the benefit of mangrove forest management for prawn fishing and mangrove timber production in Segara Anakan, southern coast of Central Java. The information concerning mangrove coverage changes was achieved from a satellite imagery (Landsat) from 2002 to 2009, while prawn resources stock assessment was analyzed through production surplus method and economic analysis of prawn fishing. The results show that the condition of mangrove ecosystem in Segara Anakan since 2002 to 2009 had been decreasing with average decrease rate of 10,28% each year which caused to prawn abundance. Utilization of mangrove wood inwhich aged above 20 years would give more benefit to prawn fishing and timber production. The additional economic value for prawn fishing was approximately 3,964 times of cropped woods. Prawn fisheries resource management in Cilacap coastal waters could be done by management of fishing effort and rehabilitation of mangrove forest in Cilacap region and surrounding areas as well especially in Segara Anakan Lagoon.