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Komunitas ikan-ikan karang Teluk Prigi, Trenggalek, Jawa Timur Wibowo, Kunto; Adrim, Mohammad
ZOO INDONESIA Vol 22, No 2 (2013): Desember 2013
Publisher : Masyarakat Zoologi Indonesia

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Penelitian mengenai kenekaragaman dan struktur komunitas ikan karang ini dilakukan di Teluk Prigi Kabupaten Trenggalek, Jawa Timur. Kenekaragaman jenis dan struktur komunitas ikan karang di perairan gelombang berenergi tinggi pesisir Samudera Hindia dilakukan dengan metode sensus visual (UVC) menggunakan peralatan SCUBA. Jumlah jenis ikan karang diperoleh 102 jenis yang mewakili 22 suku, terdiri dari 32 jenis ikan target, 17 jenis ikan indikator, dan 53 jenis ikan major. Jenis-jenis dominan masing-masing kategori adalah Acanthurus bariense (ikan target), Chaetodon kleinii (ikan indikator), dan Archamia fucata (ikan major). Analisis kluster indeks similaritas Bray-Curtis menunjukkan adanya 3 tipe habitat komunitas ikan. Pengelompokan habitat ini mengindikasikan hasil yang sama dengan ordinasi sampel MDS dimana dengan jelas menunjukkan tiga komunitas yang berbeda.

Status Trofik Ikan Karang dan Hubungan Ikan Herbivora dengan Rekrutmen Karang di Perairan Pulau Pari, Teluk Jakarta Wibowo, Kunto; Abrar, Muhammad; Siringoringo, Rikoh Manogar
Oseanologi dan Limnologi di Indonesia Vol 1, No 2 (2016)
Publisher : Oseanologi dan Limnologi di Indonesia

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Keanekaragaman jenis dan kelimpahan ikan karang merupakan salah satu petunjuk tentang kesehatan ekosistem terumbu karang. Berdasarkan status trofiknya, ikan herbivora menjadi kelompok yang penting sebagai pengontrol populasi algae yang secara spasial merupakan kompetitor karang. Penelitian ini bertujuan untuk mengetahui kondisi keanekaragaman jenis ikan karang di perairan Pulau Pari dan hubungan ikan herbivora dengan rekrutmen karang. Penelitian dilakukan di lima stasiun ekosistem terumbu karang di Pulau Pari dan sekitarnya pada bulan Maret 2014. Pengumpulan data ikan karang dilakukan dengan cara pengamatan bawah air menggunakan transek sabuk sepanjang 70 m dan lebar 5 m. Pencatatan rekrutmen karang dilakukan dengan menggunakan transek 1 x 1 m2Â sebanyak 9 kali ulangan. Tercatat sebanyak 121 spesies ikan karang yang tergolong dalam 25 genera dan 20 famili. Pomacentridae, Labridae, dan Chaetodontidae merupakan tiga famili dengan keanekaragaman spesies tertinggi. Kelimpahan ikan herbivora bervariasi antara stasiun, dari 4 hingga 52 individu dalam setiap transek. Rekrutmen karang di perairan Pulau Pari tergolong rendah, yaitu 3,22 koloni/m2. Namun, hasil regresi menunjukkan kelimpahan ikan herbivora berkorelasi positif dengan kepadatan karang muda. Kelimpahan ikan herbivora dan kepadatan karang muda di perairan Pulau Pari belum menunjukkan potensi maksimal bagi pemulihan karang setelah mengalami kerusakan. Rekrutmen karang yang rendah dalam ekosistem di perairan Pulau Pari ini juga disebabkan oleh sedimentasi, suhu, pola arus, dan salinitas. Â

TWO NEW RECORDS OF ANTHIINE FISHES GENUS PLECTRANTHIAS (PERCIFORMES: SERRANIDAE) FROM INDONESIA Peristiwady, Teguh; Makatipu, Petrus Ch.; Satrioajie, Widhya Nugroho; Wibowo, Kunto
Marine Research in Indonesia Vol 39, No 2 (2014)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Three specimens of Plectranthias retrofasciatus Fourmanoir and Randall, 1979 and one specimen of P. randalliÃÂ Fourmanoir and Rivaton, 1980 were collected by first author from fish market, Bitung, North Sulawesi on JuneÃÂ and September 2010. The specimens were deposited at LBRC-F, the reference collection of LIPI Bitung, TechnicalÃÂ Implementation Unit for Marine Biota Conservation, Research Centre for Oceanography, Indonesian Institute ofÃÂ Sciences, Bitung, Indonesia. Plectranthias retrofasciatus is closely related to P. megalophthalmus and P. knappi,ÃÂ in sharing some morphological characters as snout length and interorbital width, while P. randalli differs to otherÃÂ species by having a moderate deep body proportion. Initially these species known only from New Caledonia for P.ÃÂ retrofasciatus and Chesterfield Islands and southern Taiwan for P. randalli respectively. The two species of anthiineÃÂ fishes collected from Bitung, Indonesia bringing the total number of species of this genus known in Indonesia to six.

COMMUNITY STRUCTURE OF CHAETODONTIDAE IN THE WEST OF BANDA SEA Wibowo, Kunto; Adrim, Mohammad; Makatipu, Petrus Christianus
Marine Research in Indonesia Vol 38, No 1 (2013)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Distribution and composition of Indonesian Chaetodontid species may vary among different locations. However, illegal fishing practices such as bombing and poisoning on reef ecosystems have significant contribution to environmental degradation and can change the community structure of fish especially that of Chatodontids that act as indicator species in in the given areas. Therefore, it is important to do periodic surveys to know the current condition and their changing. A study on community structure of Chaetodontidae has been conducted from July toAugust 2011 on coral reef ecosystems of the Banda Sea and its adjacent waters including Banggai, Kendari, and Lamalera Islands. Scuba equipment was used and underwater visual census method was applied for collecting the data at 21 stations. A total of 1399 individual Chaetodontid fishes was observed, belonging to thirty species and seven genera, i.e. Chaetodon (20 species), Heniochus (4 species), Forcipiger (2 species), Chelmon (1 species), Coradion (1 species), Hemitaurichthys (1 species), and Parachaetodon (1 species). Chaetodon kleinii was the most dominant species in the Banggai (74,38%) and Lamalera (71,71%). Kendari was characterized by the presence of C. octofasciatus that contributed 55,20%. There were two dominant groups of Chaetodontidae based on the feeding guild. Facultative coral feeder was the most abundance in Banggai and Lamalera, while the most commonChaetodontidae in Kendari belonged to obligate coral feeder. Chaetodontid diversity in Banggai was the lowest compared to that of in other studied areas. Anthropogenic pressure may become a major factor causing the low diversity and studied species richness in the coral reef ecosystem of Banggai waters.

COMMUNITY STRUCTURE OF CHAETODONTIDAE IN THE WEST OF BANDA SEA Wibowo, Kunto; Adrim, Mohammad; Makatipu, Petrus Christianus
Marine Research in Indonesia Vol 38 No 1 (2013)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Distribution and composition of Indonesian Chaetodontid species may vary among different locations. However, illegal fishing practices such as bombing and poisoning on reef ecosystems have significant contribution to environmental degradation and can change the community structure of fish especially that of Chatodontids that act as indicator species in in the given areas. Therefore, it is important to do periodic surveys to know the current condition and their changing. A study on community structure of Chaetodontidae has been conducted from July toAugust 2011 on coral reef ecosystems of the Banda Sea and its adjacent waters including Banggai, Kendari, and Lamalera Islands. Scuba equipment was used and underwater visual census method was applied for collecting the data at 21 stations. A total of 1399 individual Chaetodontid fishes was observed, belonging to thirty species and seven genera, i.e. Chaetodon (20 species), Heniochus (4 species), Forcipiger (2 species), Chelmon (1 species), Coradion (1 species), Hemitaurichthys (1 species), and Parachaetodon (1 species). Chaetodon kleinii was the most dominant species in the Banggai (74,38%) and Lamalera (71,71%). Kendari was characterized by the presence of C. octofasciatus that contributed 55,20%. There were two dominant groups of Chaetodontidae based on the feeding guild. Facultative coral feeder was the most abundance in Banggai and Lamalera, while the most commonChaetodontidae in Kendari belonged to obligate coral feeder. Chaetodontid diversity in Banggai was the lowest compared to that of in other studied areas. Anthropogenic pressure may become a major factor causing the low diversity and studied species richness in the coral reef ecosystem of Banggai waters.

TWO NEW RECORDS OF ANTHIINE FISHES GENUS PLECTRANTHIAS (PERCIFORMES: SERRANIDAE) FROM INDONESIA Peristiwady, Teguh; Makatipu, Petrus Ch.; Satrioajie, Widhya Nugroho; Wibowo, Kunto
Marine Research in Indonesia Vol 39 No 2 (2014)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Three specimens of Plectranthias retrofasciatus Fourmanoir and Randall, 1979 and one specimen of P. randalliÂ Fourmanoir and Rivaton, 1980 were collected by first author from fish market, Bitung, North Sulawesi on JuneÂ and September 2010. The specimens were deposited at LBRC-F, the reference collection of LIPI Bitung, TechnicalÂ Implementation Unit for Marine Biota Conservation, Research Centre for Oceanography, Indonesian Institute ofÂ Sciences, Bitung, Indonesia. Plectranthias retrofasciatus is closely related to P. megalophthalmus and P. knappi,Â in sharing some morphological characters as snout length and interorbital width, while P. randalli differs to otherÂ species by having a moderate deep body proportion. Initially these species known only from New Caledonia for P.Â retrofasciatus and Chesterfield Islands and southern Taiwan for P. randalli respectively. The two species of anthiineÂ fishes collected from Bitung, Indonesia bringing the total number of species of this genus known in Indonesia to six.

THE STUDY HOW TO ASSEMBLING SMD DEVICE INTEGRATED Wibowo, Kunto
Jurnal Ilmiah Informatika Komputer Vol 13, No 3 (2008)
Publisher : Universitas Gunadarma

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Nowadays, the size of electronic components is not macro anymore, but already in micro size, even nano. In designing electronic device using surface mount device (SMD), a number of special components which has better characteristics is oftentimes required because of the demand which can not be tolerated. Hermetic SMD (airproof SMD) is a preference to fulfill the demand for design of small size, light weight, perfect thermal performance, free of switching waves, and also higher circuit efficiency.Keyword(s): assembling, SMD, thermal performance, effcient.Subject Description : B.7.Integrated Circuit | B.7.1. Types and Design Styles | Advanced Technologies

Simulation design and analysis 9-level H-bridge single phase stepdown cyclo inverter Setiyono, Setiyono; Wibowo, Kunto
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 14, No 4: December 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v14.i4.pp2264-2272

This DC-to-AC voltage converter is designed for output frequency controlled by a 9-level cascade H-bridge cyclo inverter with pulse width adjustment. The aim of the study was to determine the pattern and format of the voltage, output frequency, and Total Harmonic Distortion index of a 9-level IGBT cyclo inverter. The method used is to build a unidirectional power converter design modeling into 9 alternating levels with cyclo converter-controlled frequency settings using the Simulink MATLAB tool. The cyclo converter section is constructed with two P and N converters in a parallel arrangement. The frequency and trigger pulse width of both converters control the output voltage and frequency format of the cyclo inverter. The test results show a series of ladder waves with an output frequency, of (1/2f, 1/3f, 1/4f, 1/5f, 1/6f, 1/7f, 1/8f, 1/9f, and 1/10f). The simulation results show that the nth input frequency divider waveform is characterized by the emergence of a number of step pulses of n positive half cycles and negative half cycles. The Total Harmonic Distortion Index gets bigger when the system circuit is designed at a low frequency. This modeling can be implemented into a prototype that is used for variable-speed DC motor drivers.

Pemetaan Pengusaha dan Identifikasi Potensi Pengusaha Muda Asli Papua di Provinsi Papua Barat Arim, Maria; Wibowo, Kunto; Widiastuti, Nurhani; Arifin, Haerul; Oruw, Daniel Jimmy; Pattiasina, Jeffri Roy; Batorinding, Ezrom
Igya ser hanjop: Jurnal Pembangunan Berkelanjutan Vol 6 No 1 (2024)
Publisher : Badan Penelitian dan Pengembangan Provinsi Papua Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47039/ish.6.2024.1-12

Usaha Mikro, Kecil dan Menengah (UMKM) berperan penting dalam menggerakkan roda perekonomian dan sebagai basis ekonomi rakyat yang dapat dilakukan berbagai kalangan masyarakat dalam usaha bisnis. Pengusaha Muda Asli Papua (PMAP) sebagai bagian dari para pelaku usaha di wilayah Papua Barat turut andil dalam UMKM. Tujuan penelitian ini adalah untuk mengidentifikasi dan menganalisis Potensi Pengusaha Muda Asli Papua. Metode penelitian yang digunakan adalah metode deskriptif. Pengambilan sampel dilakukan dengan metode snowball sampling kepada pengusaha Papua yang ada di Kabupaten Manokwari Selatan, Teluk Bintuni dan Pegunungan Arfak. Hasil penelitian menunjukkan jenis usaha yang telah dikelola dan dapat dikembangkan PMAP meliputi usaha industri kreatif, berbagai usaha jasa, usaha budidaya perikanan air tawar, usaha ternak ayam potong dan usaha produksi pengolahan makanan. Fasilitas pengembangan usaha yang dominan diakses PMAP utamanya berupa pelatihan, sedangkan akses promosi usaha dan pendampingan usaha masih sangat minim. Demikian pula akses modal, pembimbingan usaha dan magang, meskipun dapat diakses namun terbatas. Berdasarkan kepemilikian dokumen dan perizinan usaha dari PMAP menunjukkan sebagian besar PMAP belum memiliki. Hal tersebut disebabkan anggapan bahwa proses perizinan yang berbelit dan membutuhkan waktu lama, ketidaktahuan tentang proses pengurusan dan manfaat adanya dokumen-dokumen perizinan dalam pengembangan usaha. Dampak eksternalitas dari berbagai jenis usaha yang dilakukan PMAP menunjukkan eksternalitas positif yaitu terserapnya tenaga kerja dari kalangan anak muda dan kaum perempuan.

ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI PRODUKSI USAHA ENBAL KEJU DI DESA LOON KECAMATAN KEI KECIL KABUPATEN MALUKU TENGGARA Ngamel, Bertolameus; Wibowo, Kunto; Simanungkalit, Saut
Sosio Agri Papua Vol 12 No 2 (2023): Desember
Publisher : Department of Social Economic Agriculture, Faculty of Agriculture, University of Papua, Manokwari, West Papua, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/sap.v12i2.342

Enbal Keju merupakan salah satu hasil diversifikasi pangan lokal yang telah diproduksi sebagai makanan khas daerah. Produksi Enbal keju sangat diminati masyarakat lokal dan sebagai oleh-oleh dari daerah Kei Maluku Tenggara. Tujuan penelitian ini adalah untuk mengetahui tingkat produksi usaha enbal keju dan faktor-faktor yang mempengaruhi produksi usaha enbal keju di Desa Loon Kabupaten Maluku Tenggara. Metode yang digunakan dalam penelitian yaitu metode deskriptif dengan teknik studi kasus. Hasil penelitian menunjukkan rata-rata produksi usaha enbal keju di Desa Loon Kabupaten Maluku Tenggara dalam satu kali proses produksi sebesar 88,83/Kg atau dalam satu bulan mencapai 433,4/Kg. Dari hasil analisis regresi linear berganda dengan persamaan regresi dari hubungan variable-variabel biaya, tenaga kerja, bahan baku dan pengalaman secara simultan berpengaruh terhadap produksi usaha enbal keju yang dihasilkan. Sedangkan uji secara parsial menunjukan variabel bahan baku memberikan pengaruh nyata terhadap produksi usaha enbal keju. Produksi enbal keju memiliki pangsa pasar yang cukup luas karena tidak saja pada pasar lokal, tetapi sebagian produksi enbal keju telah dipasarkan ke luar daerah produksi. Untuk itu peningkatan produksi enbal keju perlu diupayakan dengan meningkatkan ketersediaan bahan baku yang mudah didapatkan sehingga akan meningkatkan pendapatan masyarakat pelaku usaha.

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