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Identifikasi Borneo Vortex Terhadap Dinamika Suhu Permukaan Laut di Laut Jawa Yosafat Donni Haryanto; Shanas Septy Prayuda; Rezfiko Agdialta; Nelly Florida Riama; Agus Hartoko; Sutrisno Anggoro; Muhammad Zainuri
Jurnal Penelitian Sains Vol 22, No 3 (2020)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1493.339 KB) | DOI: 10.56064/jps.v22i3.590

Abstract

The event of Borneo Vortex is a disruption of the synoptic scale that occurs when the Asian monsoon is active. Borneo Vortex occurs because of the interaction of the Asian monsoon winds with the wind from the southeast in the northwest region of Borneo so that the vortex is formed which can increase rainfall. Related with rainfall, Sea Surface Temperature (SST) becomes one of the factors that influence it. The purpose of this study is to examine the effect of Borneo Vortex on the dynamics of Sea Surface Temperatures in the Java Sea. The impact of Borneo Vortex, SST parameter becomes dynamic and very important to influence the condition of waters in Java Sea. Data used in this research is ERA Interim ECMWF (European Center for Medium-Range Weather Forecast) Reanalysis data in the form of wind component u and v, vortisitas relative, divergence, and specific humidity. Rainfall analysis is done using daily rainfall data of 3B42RT TRMM (Tropical Rainfall Measuring Mission), while SST data uses the data of Visualize NOAA (National Oceanic and Atmospheric Administration) High Resolution Blended Analysis Data. The Sea Surface Temperature analysis was performed using Remote Sensing data from the period of December until February (DJF) 2004/05 to 2014/15. The method used is to find the composite value of each parameter at the time of Borneo Vortex event during the time of research. The results identify that the largest event of Borneo Vortex was in December. With the presence of Borneo Vortex, there is a significant change in vorticity, divergence, moisture transport, rainfall, and SST. The impact of Borneo Vortex can increase rainfall and increase SST in the Java Sea. Borneo Vortex occurred in December January February at the time of an active Asian monsoon in northwest Borneo where there is a synoptic scale disorder in the form of a massive air vortex causing an increase in rainfall and the dynamics of SST tend to rise as well.Keywords: Borneo Vortex,  Java Sea,  Sea Surface Temperature.
Aktivitas Antibakteri Ekstrak Jeruju (Acanthus ilicifolius) terhadap Pertumbuhan Vibrio harveyi Secara in vitro (ANTIBACTERIAL ACTIVITY OF JERUJU (ANACTHUS ILICIFOLIUS) EXTRACTS ON THE GROWTH OF VIBRIO HARVEYI IN VITRO) Gina Saptiani; Slamet Budi Prayitno; Sutrisno Anggoro
Jurnal Veteriner Vol 13 No 3 (2012)
Publisher : Faculty of Veterinary Medicine, Udayana University and Published in collaboration with the Indonesia Veterinarian Association

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Abstract

The aim of this research was to study the potential of jeruju (Acanthus ilicifolius) extract as anantibacterial for alternative therapy and control of bacterial diseases in prawn nurseries. Ethanol extractionwas prepared from jeruju’s leaves, trunks, fruits, and flowers..Each extract was prepared at differentconcentrations (50 ppm, 100 ppm, 200 ppm, 300 ppm, 400 ppm, 500 ppm, 600 ppm, 700 ppm, 800 ppm,900 ppm, and 1000 ppm, respectively) and further tested its antibacterial activity against Vibrio harveyiusing the agar disc diffusion method. The results showed that A. ilicifolius is a potential antibacterial,extract of the leaves seemed to be more effective in inhibit the growth of V. harveyi compared to other partsof the plant.
THE CHROMIUM (Cr) CONTENT IN WATER AND IN THE TISSUE OF MUD CRAB (Scylla serrata Forskal.) IN THE BRACKISHWATER PONDS AROUND BABON RIVER ESTUARY Nanik Heru Suprapti; Lachmuddin Sya’rani; Sutrisno Anggoro
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 1 (2012): Volume 16, Number 1, Year 2012
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

One of the problems that faced by marine aquacultures is the presence of industrial development in the nearby areas. The research aim was to study Chromium (Cr) content in the waters and in the crabs (Scylla serrata) in Brackishwater ponds around Babon River estuary of coastal areas Semarang, in Central Java. Systematical random sampling was used in this study. Analysis of Cr content in the water was compared to water quality criteria by Indonesian Ministry of Environmental. Analysis of Cr content in the tissue of crab  was based on Manual Criteria by United States Food and Drug Administration (U.S. FDA). Bioconcentration Factor was used to analyse the accumulative of Chromium content. The results showed that Chromium content in the water was 0,078 ppm (dry season) and 0,065 ppm (rainy season), respectively. Chromium content in the tissue of mud crab (Scylla serrata) was 5,237 ppm (dry season) and 4,848 ppm (rainy season) and was under of maximum level recommended (12 ppm). The Bio Concentration Factor (BCF) of Cr content has low accumulative characteristic (<100).
MARICULTURE BASED ON THROPIC SAPROBIC INDEX ANALYSIS (Case Study: Coast of Sayung Distric Demak, Central Java Indonesia) Sri Rejeki; agung Suryanto; Johanes Hutabarat; Sutrisno Anggoro; R usmilyansari
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 3 (2012): Volume 15, Number 3, Year 2012
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Coastal erosion in Sayung Distric, Demak Regency submerged 300 hectares of brackish water ponds.  However, after the local government management by soft  and hard barriers construction  resulting the formation of semi-closed coastal water area with the depth of 1 – 7 m in depth.  The condition of the this  eroded coastal water is physically degraded, idle and abandont.  The aims of this research were to evaluate ecological condition of the eroded coastal  water at Sayung for coastal aquaculture based on its Trophic Saprobic Index  values.  The research was carried out from September 2009- August 2010. The results show that the eroded coastal water at Morosari, Sayung District Demak Central Java is lightly to moderately polluted, however, ecol[ogically it is still suitable for coastal aquaculture activity, especially for cultured organisms which are at the lowest level of the food chain/the plankton feeder .
OSMOTIC RESPONSE OF TIGER SHRIMP (Penaeus monodon) BROOD STOCK IN VARIOUS MOLTING STAGES Sutrisno Anggoro; Agung Setiarto
JOURNAL OF COASTAL DEVELOPMENT Vol 2, No 1 (1998): Volume 2, Number 1, Year 1998
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

The attempt to optimize shrimp culture production has faced with several problems related to its biotechnical management, which was suspected unable to meet the needs of the cultured species. This is primary because the ecophysiological characteristics of shrimp, particularly those related to the osmoregulation mechanism in connection with their growth, have not been sufficiently understood. The research was aimed at studying the ecophysiological characteristics of tiger shrimp (Penaeus monodon) involved in biotechnical management of shrimp hatchery with special emphasis on the osmotic response and isosmotic medium requirement for adult spawners in various molting stages. The results showed that osmotic responses were closely realted to the salinity of water medium and molting phases. It was also found that the minimum osmotic works of tiger shrimp occurred in isosmotic medium, i.e. 34 – 35 ppt for premolt, 33 – 34 ppt for molt and 30 – 31 ppt for intermolt stages.
THE APPLICATION OF SILVOFISHERY ON TILAPIA (Oreochromis niloticus) AND MILKFISH (Chanos chanos) FATTENING WITHIN MANGROVE ECOSYSTEM OF THE NORTHERN COASTAL AREA OF SEMARANG CITY Rini Budihastuti; Sutrisno Anggoro; Suradi W. Saputra
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 1 (2012): Volume 16, Number 1, Year 2012
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

The most influencing area on the preservation of the coastal environment is mangrove forest. Mangrove ecosystem is interface between land and sea ecosystem, thus this ecosystem possesses specific function in that its continuity depends on dynamics occurred in the land and sea ecosystem. Mangrove ecosystem is one of several ecosystems in that it has high productivity that produces food resource for most of shore biota. Besides, from fishery side, mangrove also possesses role as spawning and nursery grounds. Nevertheless, the condition of mangrove in Indonesia is experiencing damage and width shortening. To hold the degradation speed of mangrove forest, one appropriate effort could be silvofishery. Silvofishery in an integrated activity between brackish water fishery and mangrove forest cultivation at the same location. The research was completed in northern coastal area of Mangunharjo Sub-district, Tugu district, Semarang City. The purpose of the research was to review the most appropriate mangrove type and appropriate cultivated species for silvofishery for maximized result. The method of research action was completed upon multivariate experiment, consisted of 2 factors, which were mangrove vegetation (Avicenia marina and Rhizopora mucronata) and 2 types of cultivated species of tilapia (Orechromis niloticus) and milkfish (Chanos chanos) and with 2 times repetition. Based upon the data obtained, it can be concluded to develop optimal silvofishery were R. mucronata with milkfish cultivated species and A. marina with tilapia cultivated one.
THE EFFECTIVENESS OF Acanthus Ilicifolius IN PROTECTING TIGER PRAWN (Penaeus monodon F.) FROM Vibrio harveyi INFECTION Gina Saptiani; Slamet Budi Prayitno; Sutrisno Anggoro
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 2 (2012): Volume 15, Number 2, Year 2012
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Sea holly (Achantus ilicifolius) is a mangrove plant that often used by coastal society as a traditional medicine.  It is potential to be developed as the sources of pharmaceutical products. This study aims at assessing the effectiveness of sea holly leaves as antibacterial agent and as an agent to enhance the durability of shrimp against Vibrio harveyi.  First, dried sea holly leaves were extracted with methanol, after that, it was fractionated with silica gel column method using solvent n-hexane, ethyl acetate, and n-butanol.  The treatments given to tiger prawn were crude extract, the fraction of ethyl acetate, and n-butanol, and it was given by immersion.   Next, the challenge test was conducted toward Vibrio harveyi.  As the result, the extract and the leaves of A. ilicifolius possess activities of inhibiting the growth of V. harveyi in vivo, reducing the prevalence of attacks and improving survival of prawn. In general, based on clinical symptoms and pathological anatomy, n-butanol fraction of the A.  ilicifolius leaves possess the best protection, along with ethyl acetate fraction and the crude.
OSMOTIC RESPONSES OF SEGARA ANAKAN FINE SHRIMP (Metapenaeus elegans) ADULTS IN VARIOUS SALINITY AND MOLTING STAGES Sutrisno Anggoro; S ubandiyono
JOURNAL OF COASTAL DEVELOPMENT Vol 15, No 3 (2012): Volume 15, Number 3, Year 2012
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

A research on eco-physiological characteristics of fine shrimp (Metapenaeus elegans) with special emphasis on the osmotic responses and isosmotic medium requirement for adult spawners in various molting stages was conducted.  Adult stocks of M. elegans origin from the Segara Anakan lagunas of the South West of Central Java region were collected and used as experimental shrimps.  The shrimps were hold in three 500 l-acclimation tanks and treated according to Anggoro and Nakamura’s method.  The seawater salinity level in the tank 1, 2, and 3 was 25, 28, and 22 ppt, respectively.  Osmotic response of the shrimps was examined during 3 molting stages, i.e. pre-molt/ post-molt, molt, and inter-molt phases by using an automatic microosmometer Roebling.  The results showed that osmotic responses were closely related to the salinity of water medium and molting stages.  It was also found that the minimum osmotic works of fine shrimp occurred in isosmotic medium, i.e. 16 to 20 ppt for post-molt, 28 to 30 ppt for molt, and 22 to 25 ppt for inter-molt stages.  It was concluded that the range of isosmotic media for the adult of fine shrimp was 22 to 28 ppt or equals to 642.06 to 817.31 mOsm/l H2O.
THE EFFECTS OF ENVIRONMENTAL FACTORS ON THE DYNAMIC GROWTH PATTERN OF MANGROVE Avicennia marina Endah Dwi Hastuti; Sutrisno Anggoro; Rudhi Pribadi
JOURNAL OF COASTAL DEVELOPMENT Vol 16, No 1 (2012): Volume 16, Number 1, Year 2012
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Avicennia marina is a species of mangrove tree occurs in the intertidal zones of estuarine areas in Asia, including Indonesia. Mangrove within the genus member of Avicennia have long dominated many coastal areas along Semarang and Demak coasts. The aim of this research was to analyze the effect pattern of several environment parameters to Avicennia seedling growth rate. Observation was held by setting 8 stations with 3 transects, each including mangrove survey and environment parameter measurements. Mangrove survey including seedling and sapling stage occupying 1 x 1 m and 5 x 5 m transect plot respectively. While environmental factor measurements including on site measurement for temperature, salinity, pH and DO and laboratory analysis for organic matter, nutrient (N,P,K) and sediment structure. The results showed there were 2 effect pattern for environmental parameters observed including polynomial quadratic and logarithmic patterns. Parameters which had polynomial quadratic pattern including salinity, DO, P, sand and silt, while parameters which had logarithmic pattern were temperature, pH, organic matter and N.
ANALISIS PROSPEK PENGEMBANGAN USAHA PEMBESARAN IKAN BANDENG (Chanos chanos Forskal 1775) DI KECAMATAN TUGU KOTA SEMARANG PROVINSI JAWA TENGAH Rangga Bayu Kusuma Haris; Azis Nurbambang; Sutrisno Anggoro
Jurnal Dosen Universitas PGRI Palembang PROSIDING DOSEN UNIVERSITAS PGRI PALEMBANG EDISI 16
Publisher : Jurnal Dosen Universitas PGRI Palembang

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Abstract

Abstrak Potensi budidaya bandeng di Kota Semarang seluas 139,40 Ha, permintaan pasar sekitar 600 ton/tahun, dan produksi 345,02 ton/tahun pada tahun 2011. Kegiatan usaha budidaya ikan bandeng tersebar di 4 desa di wilayah Kecamatan Tugu. Budidaya bandeng di Kota Semarang belum berjalan secara optimal dan produktivitas rendah. Oleh karena itu, penelitian ini bertujuan untuk menganalisis tingkat pemanfaatan lahan, total produksi, dan produktivitas; menganalisis tingkat kesesuaian lahan; menganalisis penerimaan, pendapatan dan kelayakan usaha; menganalisis prospek pengembangan usaha; dan merumuskan rekomendasi strategi pengembangan usaha pembesaran ikan bandeng di Kecamatan Tugu Kota Semarang Provinsi Jawa Tengah. Penelitian telah dilakukan di Desa Mangkang Kulon, Desa Mangunharjo, Desa Mangkang Wetan, dan Desa Randugarut pada bulan Maret 2013 sampai Juli 2013. Metode penelitian menggunakan kualitatif deskriptif. Metode pengumpulan data primer dilakukan dengan wawancara, pengamatan langsung, dan uji laboratorium. Data sekunder diperoleh dari hasil penelitian terdahulu, Dinas Kelautan dan Perikanan Kota Semarang, BAPPEDA Kota Semarang, dan kantor Kecamatan Tugu. Metode penentuan responden dengan metode survei dan quoted sampling. Metode analisis data meliputi: analisis tingkat pemanfaatan lahan, produksi, dan produktivitas; analisis kesesuaian lahan; analisis penerimaan, pendapatan, dan kelayakan usaha; dan analisis SWOT. Kecamatan Tugu memiliki total potensi dan tingkat pemanfaatan lahan bandeng 139,40 Ha serta produktivitas total 119,65 Ha/tahun. Program pengembangan usaha pembesaran ikan bandeng dari tingkat pemanfaatan lahan melalui : optimalisasi pemanfaatan lahan kelas madya. Kesesuaian lahan tergolong dalam kelas sesuai dan layak untuk kegiatan pembesaran ikan bandeng. Berdasarkan analisis eksternal dan internal usaha pembesaran ikan bandeng di Kecamatan Tugu dikategorikan sebagai jenis usaha yang ideal, kuat dalam persaingan, dan memiliki kemungkinan untuk berkembang. Strategi pengembangan usaha pembesaran ikan bandeng di Kecamatan Tugu adalah peningkatan produksi dari 345,02 ton/tahun menjadi 600 ton/tahun; ekstensifikasi skala usaha dengan memanfaatkan lahan potensial dari 139,40 Ha menjadi 175,13 Ha; dan pemanfaatan kerjasama lembaga ekonomi guna menunjang permodalan. Kata Kunci : Prospek Pengembangan, Usaha Pembesaran, Ikan Bandeng