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PREVALENCE, INSIDENCE AND PROGRESSION BLACK-BAND DISEASE ON SCLERACTINIAN CORAL (MONTIPORA SPP) IN SHALLOW WATER OF PARI ISLANDS Delpopi, Michael; Zamani, Neviaty Putri; Soedarma, Dedi; Johan, Ofrie
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 20, No 1 (2015): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (436.103 KB) | DOI: 10.14710/ik.ijms.20.1.52-60

Abstract

Black-band disease (BBD) is a persistent disease that cause the decline of the coral reef ecosystems, which is still slightly recorded in Indonesia, including in Pari Island, Thousand Islands. The objectives of this study were to determine progression, prevalence and incidence BBD on Montipora spp in shallow water of Pari Islands. Coral cover were estimated using line intercept transect (LIT) whereas the prevalence and incidence of BBD were carried out by using belt transect method with 1 m left and right of tape as long 20 m with 3 replications recorded approximately every two months. BBD progression was documented with a digital photograph method, the photograph of affected area of each coral was taken each day for 2 weeks. BBD was found to be spread in the surveyed area. The result show that prevalence and incidence of BBD showed a positive exponential relationship with water temperature. During the observation Both prevalence and incidence increased on May transitional season (wet-dry). The highest prevalence was found at 5,96 percent and whereas the maximum disease progression found at 0,46 cm/day.
KETERKAITAN SEDIMENTASI DENGAN PERSEN TUTUPAN TERUMBU KARANG DI PERAIRAN TELUK LAMPUNG Barus, Beta Susanto; Prartono, Tri; Soedarma, Dedi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 1 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (391.402 KB) | DOI: 10.29244/jitkt.v10i1.18719

Abstract

Sedimentasi dapat menghambat pertumbuhan terumbu karang bahkan dapat menyebabkan kematian. Penelitian ini telah dilakukan di perairan Teluk Lampung. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh sedimentasi terhadap terumbu karang di perairan Teluk Lampung. Sepuluh stasiun dipilih untuk pengamatan dan pengukuran. Pengukuran laju sedimentasi menggunakan alat sediment traps yang dipasang di stasiun pengamatan terumbu karang selama 20 hari. Pengamatan kondisi terumbu karang menggunakan metode transek kuadrat berukuran 1 x 1 m2. Korelasi antara sedimentasi dengan terumbu karang dilakukan dengan metode analisis regresi. Hasil penelitian menunjukkan laju sedimentasi di stasiun pengamatan berkisar antara 3,09-44,29 mg cm-2 day-1. Dampak yang timbul termasuk dalam kategori kecil-sedang dan sedang-berat. Kondisi terumbu karang di perairan Teluk Lampung masuk dalam kategori rusak hingga baik. Persentase tutupan karang di stasiun pengamatan berkisar antara 8,75-60,85%. Hasil analisis regresi menunjukkan bahwa proses sedimentasi memiliki pengaruh negatif terhadap kehidupan terumbu karang di Teluk Lampung.
PENGARUH LINGKUNGAN TERHADAP BENTUK PERTUMBUHAN TERUMBU KARANG DI PERAIRAN TELUK LAMPUNG Barus, Beta Susanto; Prartono, Tri; Soedarma, Dedi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 3 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2144.458 KB) | DOI: 10.29244/jitkt.v10i3.21516

Abstract

ABSTRAKKondisi lingkungan perairan dapat menentukan bentuk pertumbuhan terumbu karang. Penelitian ini dilakukan untuk mengetahui bentuk pertumbuhan karang pada kondisi lingkungan yang berbeda di sekitar perairan Teluk Lampung. Pengamatan dilakukan dengan menggunakan transek kuadrat dengan ukuran (1x1) m2 dan pengolahan data menggunakan software CPCE (Coral Point Count with Excel Extension). Penelitian ini dilakukan pada bulan Juli 2013. Hasil pengamatan menunjukan bahwa bentuk pertumbuhan karang yang dominan pada perairan Teluk Lampung adalah bentuk bercabang dari genus Acropora (ACB), bentuk foliose (CF) dan bentuk massive (CM). Tipe brancing  ditemukan di daerah yang memiliki kondisi arus yang lemah dan tingkat kecerahan yang tinggi. Coral foliose ditemukan pada daerah yang arusnya juga lemah dan tingkat kekeruhan rendah. Coral massive ditemukan  mendominasi di daerah yang arus dan tingkat kekeruhannya cukup tinggi. Dari hasil ini dapat disimpulkan bahwa kondisi lingkungan perairan dapat mempengaruhi bentuk pertumbuhan terumbu karang di Perairan Teluk Lampung. ABSTRACTWater conditions can determine the life form of coral. This study aimed to determine life form of coral growth in different environmental conditions around Lampung Bay waters. The observation using quadratic transect with size (1x1) m2 and processing data by using CPCE (Coral Point Count with Excel Extension) software. This study was conducted in July 2013. The results showed that the dominant form of coral growth in Lampung Bay waters was branching form of the Acropora genus (ACB), foliose (CF) and massive (CM) forms. Branching types were found in areas with weak current conditions and high brightness levels. Coral foliose were found in areas where the current was also weak and low turbidity. Coral massive domination was found in high level both in current and turbidity. It was concluded that environmental conditions could influence the life form of coral reef  in the waters of Lampung Bay.
ANALISIS STRATEGI PENGELOLAAN DAN PERAN LEMBAGA DALAM RANGKA KONSERVASI DANAU SENTANI JAYAPURA (ANALYZE OF MANAGEMENT STRATEGY AND INSTITUTION PARTICIPATION IN CONCERVATION OF SENTANI LAKE, JAYAPURA) Walukow, Auldry F.; Djokosetiyanto, D.; Kholil, .; Soedarma, Dedi
Media Konservasi Vol 13 No 1 (2008): Media Konservasi
Publisher : Deparement of Forest Resources Conservation and Ecotourism - Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (923.372 KB) | DOI: 10.29244/medkon.13.1.%p

Abstract

The Sentani Lake located at Jayapura regency which covered : east Sentani District, Sentani District, and West Sentani district. Other area located in Jayapura city. Sentani lake has 9630 ha area with 52 m depth and 72 m mean surface level. Some problem on Sentani lake are erotion, domestic waste and industrial waste which due to Cu and Zn concentration in these lake over standard of water quality. The strategy consist of management and institution responsibility, and lake institution is needed to develop lake sustainability . Analyze method by ISM (interpretative structural modeling) with institution fellowship, goal in lake management and management model programe as some input . According to expert judgment, the institution elements responsed to develop management model of Sentani lake are marine and fishing institution, Housing institution, local leader and local institution, environmental institution, landscape intitution, university, and tourisme institution. That elements is the fourth level. The fourth elements level become the main driver power and to effect on next sub element. Co-Management institution is proposed in this research.Key words: institution responsibility, co-management, ISM, driver power, Sentani Lak.
EVALUASI PENEBARAN UDANG GALAH (MACROBRACHIUM ROSENBERGII) DI WADUK DARMA, JAWA BARAT Tjahjo, Didik Wahju Hendro; Boer, Mennofatria; Affandi, Ridwan; Muchsin, Ismudi; Soedarma, Dedi
Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia Vol. 11 No. 2 (2004): Desember 2004
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.705 KB)

Abstract

Evaluasi keberhasilan penebaran udang galah (Macrobrachium rosenbergii) di Waduk Darma yang memiliki luas genangan 400 ha telah dilaksanakan berdasarkan penebaran dari April 2002 sampai Maret 2003. Udang galah yang ditangkap dengan jaring lempar mencapai 57 - 624 ind/bulan atau sama dengan 1.3 - 35.0 kg/bulan. Metode yang digunakan adalah metode survei dengan penarikan contoh acak berlapis. Hasil penelitian menunjukkan bahwa kualitas perairan di Waduk Darma baik fisika maupun kimia mendukung pertumbuhan udang galah. Pada kondisi tersebut laju pertumbuhan udang galah cukup tinggi dengan koefisien pertumbuhan K antara 0.88 - 1.59 dan L? sama dengan 36.2 cm untuk jantan, K antara 0.87 - 1.55 dan L? sama dengan 25.9 cm untuk betina. Kondisi makanan yang tersedia cukup untuk pertumbuhan. Interaksi dengan komunitas ikan lainnya relatif rendah. Keberhasilan penebaran mencapai 10.5% dengan laju eksploitasi antara 0.06 sampai 0.80.Kata kunci: Macrobrachium rosenbergii, penebaran, pertumbuhan, penangkapan, waduk.
Aktivitas Antibakteri Ekstrak Karang Lunak Sarcophyton sp. yang Difragmentasi dan Tidak Difragmentasi dari Perairan Pulau Pramuka, Kepulauan Seribu, Jakarta Kawaroe, Mujizat; Soedarma, Dedi; Effendi, Hefni; Nurhayati, Tati; Hardiningtyas, Safrina Dyah
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 3 (2010): October 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.539 KB) | DOI: 10.24002/biota.v15i3.2588

Abstract

Fragmented and non-fragmented soft corals showed antibacterial activities. Soft corals were gradually extracted using methanol, ethyl acetate, and hexane. Crude extract of the samples was tested its antibacterial activity, Minimun Inhibitory Concentration, toxicity (Brine Shrimp Lethality Test method), and phytochemicals. Overall, the antibacterial activity of crude extract of non-fragmented soft coral Sarcophyton sp. was higher than the crude extract of fragmented soft coral Sarcophyton sp. Crude ethyl acetate extract showed higher antibacterial activities. The ethyl acetate crude extract of non-fragmented soft coral Sarcophyton sp. is able to inhibit all tested bacteria is E. coli, S. aureus, P. aeruginosa and B.cereus, while the ethyl acetate crude extract of fragmented Sarcophyton sp. is unable to inhibit bacteria P. aeruginosa. Minimum inhibitory concentration extracts of non-fragmented Sarcophyton sp. in range 240?480 ?g/disc. The 24-h LC50 extracts of fragmented and non-fragmented Sarcophyton sp. for Artemia salina were 149.50 ppm and 45.15 ppm, respectively. Bioactive compounds of fragmented and non-fragmented Sarcophyton sp. extract are steroid, flavonoid and alkaloid.