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All Journal Indonesian Fisheries Research Journal
Rudy Masuswo Purwoko
Center for Fisheries Research and Development, Agency for Marine and Fisheries Research and Develoment, Ministry for Marine Affairs and Fisheries
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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INTER-SPECIFIC COMPETITION AND FISHING EFFECT TO POPULATION DYNAMIC OF BALI SARDINE (SARDINELLA LEMURU) Andhika Prima Prasetyo; Rudy Masuswo Purwoko
Indonesian Fisheries Research Journal Vol 22, No 2 (2016): (December, 2016)
Publisher : Research Center for Fisheries

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (240.933 KB) | DOI: 10.15578/ifrj.22.2.2016.85-90

Abstract

Stock-recruitment relationship of Bali sardine was investigated based on Beverton-Holt model by assuming inter-specific competition. Model is modified to incorporate the effect of fishing pressure that is density-independent to population dynamic by developing scenario fishing on adult and/or juvenile population. The results show that harvested adult the dramatic decline of recruitment supply. However, harvested juvenile is led to the positive response to population size, as an increase in fishing mortality rate will reduce competition mortality rate. Precautionary approach required by considering bipartite life cycle. 
THE DISTRIBUTION AND ABUNDANCE OF DECAPOD AND FISH COMMUNITIES IN CLEVELAND BAY, AUSTRALIA Andhika Prima Prasetyo; Rudy Masuswo Purwoko
Indonesian Fisheries Research Journal Vol 22, No 2 (2016): (December, 2016)
Publisher : Research Center for Fisheries

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (807.052 KB) | DOI: 10.15578/ifrj.22.2.2016.91-98

Abstract

Spatial and temporal variations in the fish and decapod communities were investigated at three stations in Cleveland Bay along with other zooplankton and phytoplankton communities. The linkage between biological assemblages and physical properties of the ocean was explained to develop better understanding of population dynamic of planktonic communities. Biological and physical properties data were gathered in 3 stations by 6 different trips. The results show that there is a significant association between daytime and tidal period to the abundance of planktonic communities (P < 0.05). Spatial distribution of fish and decapod communities are likely explained by “predator pit” and “match/mismatch” concepts to increase the survival probability along with physical properties of the ocean. 
FISHERIES SANCTUARY PLANNING IN PRACTICE: LESSON LEARNT FROM ECOSYSTEM APPROACH TO FISHERIES MANAGEMENT IN NORTH KALIMANTAN PROVINCE Andhika Prima Prasetyo; Asep Priatna; Agus Setiyawan; Rodo Lasnihora; Fadli Yahya; Dian Oktaviani; Duto Nugroho; Rudy Masuswo Purwoko; Nurmayanti Nurmayanti; Ersant Dirgantara; Hendri Antoro; Dahlan Burkiki
Indonesian Fisheries Research Journal Vol 24, No 1 (2018): (June) 2018
Publisher : Research Center for Fisheries

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (135.769 KB) | DOI: 10.15578/ifrj.24.1.2018.45-52

Abstract

Governor Decree of North Kalimantan No. 26 in 2014 concerning Management of Bombay Duck in the North Kalimantan Province Waters was established in order to address over-exploitation of bombay duck (Harpadon nehereus) population. Fisheries sanctuary is the feasible solution that was agreed by comprehensive stakeholder discussion. This research aims to extract and elaborate our experiences on establishing fisheries sanctuary in the Bangkudulis waters which focus on science communication and in the fisheries sanctuary planning. The acoustic and larva survey conducted to support the consensus and to proof the traditional ecological knowledge of the communities. The results showed that the proposed conservation area of the Bangkudulis waters has significant ecological function to ensure the sustainability of bombay duck population. The distribution and abundance of larva and juveniles were found higher in that area. The approach and challenges to deal with ecological and socio-economic aspects as well as recommendations were discussed in this paper.
Co-Authors Agus Setiyawan Andhika Prima Prasetyo Asep Priatna Dahlan Burkiki Dian Oktaviani Duto Nugroho Ersant Dirgantara Fadli Yahya Hendri Antoro Nurmayanti Nurmayanti Rodo Lasnihora