SEDIMENTATION RATE AND DISPERSION OF ORGANIC WASTE FROM LOBSTER CULTURE ON CAGE IN EKAS BAY, WEST NUSA TENGGARA PROVINCE

Muhammad Junaidi, Mat Sardi Hamzah
https://doi.org/10.29244/jitkt.v7i1.9812

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Issue
Vol. 7 No. 1 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Accepted
13 August 2015
Published
13 August 2015
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Abstract

The objective of this study was to determine sedimentation rate and dispersion of organic waste from lobster culture on cage in Ekas Bay, West Nusa Tenggara Province. Measurement of sedimentation rate was conducted every month during the process of cultivation lobster. This measurement was done by setting up a sediment trap under and around the cage. The result of this study showed that sedimentation rate under the lobster cage within 270 days ranged from 14.92 to 27.33 (20.66±4.60) g/m2/day. The organic waste did not disperse far away from the cage because of the small current rate around the cage location of 0.068 to 0.2 m/s. Feces and residual feed settling velocities followed the current direction within the range of 0.0373 to 0.072 m/s with 8.50 m of water depth. According to this result, dispersion of feces particle and residual food was between 8.24 and 45.58 m from the cage. In order to prevent an accumulation of waste particle on the water bottom, the distance between cages needs to be set to at least twice of the farthest distance of particle dispersion which is 2 x 45.58 = 91.16 m or about 100 m.

Keywords: sedimentation rate, waste dispersion, lobster culture, Ekas Bay

Authors

Muhammad Junaidi
Program Studi Budidaya Perairan, Universitas Mataram
junaidi_md@yahoo.co.id (Primary Contact)
Mat Sardi Hamzah
UPT Loka Pengembangan Bio Industri Laut Puslit Oseanologi-LIPI, Mataram
JunaidiM., & HamzahM. S. (2015). SEDIMENTATION RATE AND DISPERSION OF ORGANIC WASTE FROM LOBSTER CULTURE ON CAGE IN EKAS BAY, WEST NUSA TENGGARA PROVINCE. Jurnal Ilmu Dan Teknologi Kelautan Tropis, 7(1). https://doi.org/10.29244/jitkt.v7i1.9812
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