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All Journal Indonesian Journal of Geography Jurnal Hutan Tropika
Saleh, Ejria
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Willingness to Pay For Mangroves Conservation By The Local Communities in Salut Mengkabong Lagoon, Tuaran Sabah Mojiol, Andy R; Hong, Kuan Yen; Saleh, Ejria
Jurnal Hutan Tropika Volume 14 Nomor 1 Tahun 2019
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v14i1.310

Abstract

This research aimed to investigate the Willingness to Pay (WTP) for mangrove conservation of local communities at Salut Mengkabong Lagoon, Tuaran based on the amount of fees imposed on them. The content is based on questionnaire survey provided to local communities from Mangrove Forest Produce (MFP) to their perception in conservation programme. The survey was conducted with a priod of 7 month started from September 2016 until March 2017. Contingent Valuation Method (CVM) was used to calculate the Willingness to Pay (WTP) whereby 100 respondents were asked to complete the questionnaire. From the analysis, it showed that the WTP of local communities were affected by their monthly income. Regression model analysis with WTP = -0.087* (monthly income) + 1.789 has been formed. Whereas, the value of mangrove forest produce (MFP) in Salut Mengkabong Lagoon has been calculated with atotal of RM728 for the direct product while for the non-direct products such as crab, bivalves, seashells and fishes cost about RM721 to RM2472 in a year. The study documented mangrove forest contribution to local communities in Salut Mengkabong Lagoon such as timber; Rhizophora mucronata and Avicennia spp, Seafood; Scylla serrata, Geloina coaxans, various type of fishes and seashell. From the result, it was hope that this study can promote a win-win situation to both local community and stakeholders to come out with an effective supervision to ensure the long-lasting dependency of local communities to the mangrove forests without undermining their socio-economic wellbeing.
Seasonal Variability of Sea Surface Chlorophyll-a at West Borneo Island Radjawane, Ivonne Milichristi; Saleh, Ejria; Napitupulu, Gandhi; Abdillah, Muhammad Rais; Hassan, Mohd Azamuddin Mohd
Indonesian Journal of Geography Vol 56, No 1 (2024): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.87713

Abstract

The optimization of marine fisheries activities can be achieved through an understanding of the timing of fishing, access to good information, and knowledge of oceanographic conditions. These conditions often lead to significant nutrient enrichment in the surface layer of the ocean, which in turn increases the sea surface chlorophyll-a (SSC). In the context of the west Borneo Island region, seasonal variability in SSC plays a crucial role in determining potential fishing grounds. The objectives of this study are  examining the seasonal variability of SSC, identifying upwelling and downwelling processes through analysis of sea surface wind (SSW), and determining the climatological distribution of Sea Surface Temperature (SST) and sea surface height (SSH) within the water off Labuan Island, Malaysian Borneo, and the Karimata Strait, West Kalimantan, Indonesia. Remote sensing data spanning from 2007 to 2021 were analyzed, encompassing SSC, SST, SSH anomalies, SSW, wind stress curl, and Ekman pumping. Additionally, rainfall and river discharge were examined as supplementary indicators of these oceanographic processes. The findings indicate that SSW plays a pivotal role in driving upwelling and downwelling processes, which in turn influence SSC variability. In Labuan waters, upwelling occurs primarily from November to February, while downwelling predominates from June to September. In contrast, in the Karimata Strait, upwelling is identified from July to September, with downwelling prevalent between March and May. Upwelling events in both regions are characterized by increasing SSC, accompanied by decreasing SST and SSH, while the opposite trends are observed during downwelling events. The peak of rainfall and river discharge in December is noted to potentially enhance SSC variability in the Karimata Strait compared to Labuan Island waters.
Co-Authors Abdillah, Muhammad Rais Gandhi Napitupulu Hassan, Mohd Azamuddin Mohd Hong, Kuan Yen Mojiol, Andy R Radjawane, Ivonne Milichristi