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Fisheries are fundamental part of human activities. Sustainable fishing is an important aspect in maintining the fishery resources for the future generation. The main objective of this study is to estimate the maximum sustainable yield (MSY) of the fishing grounds for the sustainable harvesting. This study deploy the approximate estimation of abundance (biomass) and potential estimation of a type or group of fish species based on the analysis of production surplus to determine the sustainability of maximum catch rate. Results of the research identified about 35 species from the 17 families of fish. Based on the MSY calculation using the Schaefer method with a long line standard, the fish utilization status is in overfishing condition status at all sampling points, with the value above 98% above the standard capture limit of 70%. The results of the Schaefer model provide the baseline information on MYS for the freshwaters fish, which could be used as the basis for future fishery assessment and management of this biosphere reserve.

Sungai Cihampelas merupakan anak sungai Citarum yang mengalir melintasi wilayah Kabupaten dan Kota Bandung sepanjang 8,5 km. Perairan Sungai Cihampelas  dimanfaatkan masyarakat untuk kegiatan domestik, pariwisata, pertanian, dan perikanan. Penelitian ini bertujuan untuk mengetahui hubungan kelas air berdasarkan Indeks Pencemaran dan kualitas air berdasarkan Indeks Integritas Biotik Makrozoobentos dan Diatom Perifiton. Penelitian dilakukan di empat stasiun Sungai Cihampelas yang mewakili daerah yang minim gangguan hingga daerah yang diprediksi mengalami gangguan diantaranya Cilengkrang, Cisurupan, Pasanggrahan, dan Mekarmulya. Pencuplikan air, makrozoobentos, dan diatom perifiton dilakukan pada bulan Juli hingga September 2016 sebanyak empat kali dengan interval waktu dua minggu. Berdasarkan Indeks Pencemaran, sepanjang aliran sungai Cihampelas tergolong kelas air I hingga IV+. Penilaian kualitas air dengan menggunakan Indeks Integritas Biotik Makrozoobentos menunjukkan bahwa Sungai Cihampelas memiliki kategori sangat baik hingga buruk dengan nilai indeks berkisar antara 4—18. Kualitas air Sungai Cihampelas menunjukkan kategori sangat baik hingga buruk berdasarkan nilai Indeks Integritas Biotik Diatom Perifiton yang berkisar antara 3—15. Hasil analisis korelasi Spearman menunjukkan bahwa Indeks Pencemaran (kelas air) memiliki korelasi negatif dan lebih kuat terhadap Indeks Integritas Biotik Makrozoobentos dibandingkan Indeks Integritas Biotik Diatom Perifiton.

No abstract

Titisari PW, Syamsudin TS, Sjarmidi A. 2016. The utilization of bioresources by local communities at Giam Siak Kecil-BukitBatu Biosphere Reserve, Riau Province, Indonesia. Biodiversitas 17: 873-886. This study aims to assess the use of bioresources of Giam Siak Kecil Bukit Batu Biosphere Reserve by the local community. The use of bioresources was characterized by the level of utilization of bioresources in the household economy. It classified into five groups; (i) subsistence group (SG), (ii) supplementary group (SpG), (iii) integrated group (IG), (iv) specialized extraction group (SEG), and (v) specialized cultivation group (SCG). The results showed that the local community used bioresources as main source of livelihood at the core zone and buffer zone. There are 36 species of fish, 17species of non-timber, and 28 species of timber used by local community. Core area and buffer zone are dominated by SEG and SCG. In the core area, the relationship between SEG non-timber and timber is very significant. In buffer zone, the exploitation of fisheries, and timber were dominated by SEG. The correlation between the use of bioresources in the core area showed that the exploitation of nontimber and timber are very high by SEG community.