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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Journal of Marine Research Jurnal Harpodon Borneo Jurnal Kelautan Tropis Berdikari: Jurnal Pengabdian Masyarakat Indonesia Buletin Ilmiah Marina : Sosial Ekonomi Kelautan dan Perikanan MALLOMO: Journal of Community Service Journal of Fisheries & Marine
Agus Indarjo
Department Of Marine Science, Faculty Of Fisheries And Marine Science, Diponegoro University
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Education Environmental Science Languange, Linguistic, Communication & Media Social Sciences Other

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Pertumbuhan Rumput Laut Gracilaria sp Greville, 1830 (Rhodophyta: Florideophyceae) di Tambak Tidak Produktif Mangunharjo Tugu Semarang Suryono, Chrisna Adhi; Irwani, Irwani; Sabdono, Agus; Pribadi, Rudhi; Setyani, Wilis Ari; Indarjo, Agus
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v9i4.29215

Abstract

Rumput laut Gracilaria sp merupakan salah satu hasil produk laut yang masih memiliki permintaan yang tinggi di pasar. Permasalahan yang ada masih rendahnya suplai karena masih banyak mengandalka hasil alam.  Tujuan dari penelitian ini melihat pertumbuhkan rumput laut tersebut di tambak yang tidak produktip.  Metoda yag digunakan adalah lepas dasar sesui dengan hidupnya di alam.  Pegukuran dilakuna terhadap 10 contoh rumput laut yang memiliki berat awal sama ±20gr, pengukuran berat dilakukan setiap 10 hari.  Hasil penelitian menunjukan bahwa Gracilaria mampu tumbuh di tambak dengan awal yang lambat kemudian meningkat setalah hari ke 30.  Uji Anova terhadap berat tiap pengukuran menjukan perbedaan yang sangat sigikan (p= 0.00 ≤ 0,01).  Kualitas perairan tambak secara keseluran mendukung untuk pertumbuhan rumput laut Gracilaria sp. Gracilaria sp seaweed one of marine commodity which still has high demand in the market.  The problem of these produck was a supply still low because the min supplay depand on nature produck.  This study aims to determine the growth of seaweed in non productive brackish waters pounds. Off-bottom method was used to application seaweed growth on brackish fish pounds such as life in nature.  Measurement of weigh was carried out on 10 samples of seaweed which had the same initial weight of ± 20 grams, weight measurements were carried out every 10 days.  The results showed that Gracilaria was able to grow in ponds with a slow start and then increased dramatically after 30 days. Anova test on the weight of each measurement showed a very significant difference (p = 0.00 ≤ 0.01).  Futher more the quality of pond waters was supports to growth of Gracilaria sp.
PEMETAAN KAWASAN EKOWISATA SELAM DI PERAIRAN PULAU PANJANG, JEPARA, JAWA TENGAH Agus Indarjo
Jurnal Harpodon Borneo Vol 7, No 2 (2014): Volume 7 No 2 Oktober 2014
Publisher : Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/harpodon.v7i2.114

Abstract

This research purposed at determining mapping of waters area Panjang Island for marine ecotourism activities. Data were collected by field survey. Data analysis using by analysis of waters suitability and spatial analysis using GIS. Analysis results of the waters Panjang Island suitability for diving ecotourism activities class suittable at station 3, station 4, station 5, and station 6. Diving ecotourism activities categories class not suitable at station 1, station 2 and station 7. Key words : Diving ecotourism, mapping of waters area, Panjang Island
Bioturbation and Its Impact on the Sediments Agus Indarjo
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 7, No 1 (2002): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (460.732 KB) | DOI: 10.14710/ik.ijms.7.1.23-26

Abstract

Abstrak Aktifitas membuat lubang dari makrofauna dasar dipengaruhi oleh kondisi fisik dan komposisi kimia sedimen. Hal ini akan sangat penting untuk pertumbuhan mikroorganisme dan meioorganisme dan juga untuk mengaduk keseluruhan bahan organik. Di dalam sedimen bioturbasi akan dipengaruhi oleh kekuatan mengaduk air dalam sedimen, kekasaran dasar. erosi velositas dan organisme lainnya Kata kunci: Bioturbasi. makrofauna, meiofauna, mikrofauna dan bahan organic Abstract Activities of burrowing benthic macrofauna are influenced by both the physical structure and the chemical composition of sediment. These factor are very important for the growth of microorganisms and meioorganisms as well as the overall turnover of organic matter. Bioturbation within the sediment will influence the shear strength, water content, bed roughness, erosion velocity and other organisms. Keywords: Bioturbation, macrofauna, meiofauna, mikrofauna dan organic matter
Mangrove Ecosystem Management Strategy in Maron Beach Semarang Alin Fithor; Joko Sutrisno; Agus Indarjo
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 4 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.202 KB) | DOI: 10.14710/ik.ijms.23.4.156-162

Abstract

Management of mangrove ecosystem is an important agenda in conserving tourism spots in coastal area. This research aimed at examining the recreation activities done in mangrove ecosystem area and mangrove forest strategy in Maron Beach, Tambakharjo, Semarang Municipality. This research employed a survey approach using direct interviews and field observations. The repondent included the entire population in the research area. Samples of this study were selected using cluster random sampling technique. Data were collected by observations, interviews and document study, followed by SWOT analysis. The results showed that the opening of Maron Beach recreation area has given some negative impacts to the post-rehabilitation of mangrove ecosystems, reducing the function mangrove in protecting the shore from coastal abrasion, reducing ability of wind abrasion protection, weakening the environmental conditions, decreasing the number of visitors and decreasing the production of fish. Mangrove forest management should be progressive, which means that research should be done in poor and unsteady conditions which result allow the market to continuously expand, enlarge the market growth and maximize the progress. Through the implementation of a non-overlapping effort, this condition can be improved.
Growth Characteristics Layur Fish Lepturacanthus savala in Juata Waters, Tarakan, Indonesia Agus Indarjo; Gazali Salim; Fahrizal Amir; Supriadi Supriadi; Permana Ari Soejarwo; Christine Dyta Nugraeni; Lukman Yudho Prakoso; Ambariyanto Ambariyanto; Muhammad Firdaus; Julian Ransangan
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 3 (2020): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.25.3.127-134

Abstract

The city of Tarakan, Indonesia, benefits economically from abundant marine biological resources, one of which is the layur fish, known commercially as ribbonfish. The purpose of this study was to analyze the growth character of the layur fish (Lepturacanthus savala) obtained from the juata waters of Tarakan City.  The method of this quantitative and descriptive study was to analyze the growth of layur fish Lepturacanthus savala in the Juata waters off the coast from the city of Tarakan. Body shape, length, weight, and ratio sex data were collected from sites selected by the purposive sampling method based on trawl fishing catch. Secondary data, collected from interviews of fishing personnel, included the number of catches using trawling gear and trawl fishing location. The length ranges of male from 20,4 to 54,0 cm with an average length of 37,2±16.8 cm (n = 255) and the length ranges of female from 20,5 to 68 cm with an average length of  44,25±23.75 cm (n = 275). The results showed that maximum length of male layur fish was smaller than the maximum length of female fish, which were 59.352 cm at 267 d and 72.638 cm at 315 d, respectively. The result shows a negative allometric growth pattern male and female layur fish was found to be the same and sex ratio of male to female has a ratio of 1,0: 1,8 with a percentage of males at 48.11% and females at 51.89%. The majority of male and female fish exhibited a thin body shape (51,4% of male and 52% of female).
Distribusi dan Kelimpahan Polychaeta di Kawasan Hutan Mangrove Klaces dan Sapuregel, Segara Anakan, Cilacap Agus Indarjo; Widianingsih Widianingsih; Ari B Abdulah
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (156.532 KB) | DOI: 10.14710/ik.ijms.10.1.24-29

Abstract

Tingginya produktivitas mangrove menjadikan hutan mangrove memiliki fungsi ekologis yang pentingbagi makhluk hidup, yaitu sebagai tempat memijah, pembesaran dan mencari makan. Biota yang hiduppada ekosistem mangrove antara lain ikan, udang, kepiting, moluska dan polychaeta. Tujuan penelitian ini adalah untuk mengetahui distribusi dan kelimpahan polychaeta di daerah Klaces dan Sapuregel yang memiliki perbedaan tingkat sedimentasi. Hasil penelitian telah ditemukan 20 famili polychaeta, 5 famili di Klaces dengan kelimpahan 44,68 ind/ m2 dan 17 famili di Sapuregel dengan kelimpahan 88,38 ind/m2. Biomassa untuk 4 famili yang dominan di kedua lokasi penelitian tidak memiliki perbedaan yang signifikan kecuali pada famili Capitellidae yaitu 0,026 g/ind di Klaces dan di Sapuregel 0,012 g/ind. Indeks  keanekaragaman (H’) di Klaces dan Sapuregel masing-masing adalah 0,49 (keanekaragaman famili rendah) dan 1,11 (keanekaragaman famili sedang), serta indeks keragamannya (e) 0,27 dan 0,30 (keseragamanfamili rendah). Indeks dominasi (C) di Klaces 0,64 (terdapat famili yang mendominasi) lebih besar dariSapuregel yaitu 0,33(tidak terdapat famili yang mendominasi).Kata kunci : polychaeta, distribusi, kelimpahan, mangroveThe high productivity in mangrove area has ecological function which is important for other living organisms, among others is for spawning area, nursery and feeding area. The biota which is live in mangrove ecological system are fish, shrimp, crab, mollusc, and polychaeta. The objective of this research is to look for the distribution and abundance of polychaeta in Klaces and Sapuregel area where are have difference sedimentation level. Twenty polychaeta families were found in this research, 5 families in Klaces and 17 families in Sapuregel. Abundance of polychaeta in Klaces was 44,68 ind/m2, this was fewer than in Sapuregel. The biomass for 4 families which was dominant in two research area were not have significant different, except Capitellidae. Biomass Capitellidae was 0,026 g/ind in Klaces and 0,012 g/ind in Sapuregel. Diversity Index (H’) in each research area Klaces and Sapuregel were 0,49 (low diversitylevel) and 1,11 (moderate diversity level) with evenness index (e) 0,27 and 0,3 (low evenness indexlevel). Domination index (C) in Klaces was 0,64 and in Sapuregel was 0,23. This value shows thatdomination index Klaces was more than Sapuregel.Key words : polychaeta, distribution, abundance, mangrove
Kondisi Terumbu Karang di Perairan Pulau Panjang Jepara Agus Indarjo; Wisnu Widyatmoko; Munasik Munasik
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 9, No 4 (2004): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (185.126 KB) | DOI: 10.14710/ik.ijms.9.4.217-224

Abstract

Kondisi terumbu karang di Pulau Panjang telah mengalami ancaman dari aktivitas manusia di daratan Pulau Jawa. Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang di perairan Pulau Panjang. Hasilpenelitian menunjukkan bahwa kondisi terumbu karang di Pulau Panjang dalam tingkatan sedang hingga buruk/rusak. Sebagian dari jumlah stasiun-stasiun di kedalaman 3 meter dalam kondisi sedang, sebagianlainnya dalam kondisi buruk/rusak. Sedangkan semua stasiun di kedalaman 7 meter dalam kondisi buruk/ rusak. Indeks keanekaragaman jenis tergolong sedang yaitu 1,277 – 2,879, dan Indeks dominansi berkisar antara 0,065 – 0,338.Kata kunci : terumbu karang, Pulau Panjang, struktur komunitasThe increasing human activities in Java Island has lead decraising of coral reef conditions in Panjang Island. The purpose of the reseach was to investigate the conditions of coral reef in Panjang Island waters. Theresult show that the coral reef in Panjang Island tended to be at bad level condition. In the three meters deep on some stations tended at medium level conditoin and some of them tended at bad level condition. But, in the seven meters deep on all stations tended at bad level condition. The diversity indeks showed medium category that are between 1,277 – 2,879 and Indeks of domination showed between 0,065 – 0,338Key words : Coral reef, Panjang Island, Communty structure
Characteristics of Von Bertalanfy Growth, Allometric, Condition Index And Mortality of Periophthalmus barbarus in Mangrove and Probiotics Conservation Area (KKMB), Tarakan, North Kalimantan Agus Indarjo; Gazali Salim; Mufrida Zein; Susiyanti Susiyanti; Permana Ari Soejarwo; Christine Dyta Nugraeni; Stephanie Bija; Yen Thi Hong Pham
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 25, No 1 (2020): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (523.714 KB) | DOI: 10.14710/ik.ijms.25.1.31-38

Abstract

The Mudskipper (P. barbarus) lives in intertidal mud flats and it becomes an indicator of water quality. The transformation of construction and water pollution in this area is important to investigate due to interaction of fishery industry, home residence, and market area surrounding areas. The aim of this research was to analyze the characteristic of Von Bertalanffy growth, allometric, condition index, and mortality of the P. barbarus in KKMB, Tarakan city. The research was designed by using descriptive quantitative method. The sampling process used purposive sampling. The sampling was conducted for 12 times plot.transect-1 in the extension area of KKMB, Tarakan city with a total area is 12 Ha, plot.transect-1area is 10x10 m2, and distance between each transect is 10 m2.  Sampling was carried out in survey area and laboratory to identify the gender and calculate total length and weight. The result showed the growth of male mudskipper (L∞ = 26.545 cm) and female (L∞ = 17.594 cm). Their size and the total population was decreased. The characteristic of male mudskipper growth was positive allometric, then female was negative allometric. The natural mortality and the catch of male mudskipper were higher than female.
PROSPEK PENERAPAN “CO-MANAGEMENT” UNTUK PENGELOLAAN SUMBERDAYA PESISIR DI KEPULAUAN KARIMUNJAWA, JEPARA (Implementation of “Co-management” For Coastal Resources Management In Karimunjawa Islands, Jepara) Dinar Isyana Syah Rani; Dian Wijayanto; Agus Indarjo; Indah Susilowati
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 15, No 2 (2019): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (632.357 KB) | DOI: 10.14710/ijfst.15.2.99-104

Abstract

Kegiatan pemanfaatan sumberdaya pesisir yang tidak terkontrol menyebabkan tekanan terhadap keberlangsungan ekologi. Penyelesaian masalah tersebut salah satunya dengan  kemitraan semua stakeholder yaitu dengan kesadaran  tentang adanya permasalahan yang terjadi dan  tanggung jawab dalam mengambil keputusan. Tujuan dari penelitian ini adalah menganalisis co-management sumberdaya pesisir di Kepuluan Karimunjawa dengan melibatkan seluruh pemangku kepentingan yang terkait.. Data penelitian dikumpulkan pada bulan April 2018 dengan melakukan observasi dan wawancara mendalam terhadap informan kunci dengan jumlah 140 orang yang terdiri dari terdiri atas pelaku usaha, pemerintah dan masyarakat dan akademisi. Analisis yang digunakan dalam penelitian ini dengan menerapkan konsep co-management dengan melihat dari 11 kondisi kunci. Hasil analisis co-management menunjukan perlunya dilakukan kerjasama antara pihak akademisi, pelaku usaha, masyarakat dan pemerintah  dengan hasil jumlah skor rata-rata 3,17 yang menunjukan bahwa keberhasilan pendekatan kemitraan sumberdaya perikanan di Kepulauan Karimunjawa dalam kondisi cukup. The activity of uncontrolled utilization of coastal resources causes pressure on ecological sustainability. One of the solutions to this problem is through the partnership of all stakeholders, with awareness the problems that occur and the responsibility for making decisions. The purpose of this study was to analyze the co-management of Coastal Resources in Karimunjawa Island by involving all relevant stakeholders. The research data was collected in April 2018 by conducting in-depth observations and interviews with key informants with 140 people consisting of according to business needs , government and society and academics. The analysis used in this study used the management concept together with looking at 11 key conditions. The results of co-management analysis indicate the need for cooperation between academics, businesses, communities and the government with the results of an average score of 3.17 indicating that it is related to partnerships in the Karimunjawa Islands in sufficient condition.
KESESUAIAN EKOWISATA SNORKLING DI PERAIRAN PULAU PANJANG JEPARA JAWA TENGAH Agus Indarjo
Jurnal Harpodon Borneo Vol 8, No 1 (2015): Volume 8 No 1 April 2015
Publisher : Fakultas Perikanan Dan Ilmu Kelautan Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.251 KB) | DOI: 10.35334/harpodon.v8i1.105

Abstract

This research purposed at determining the suitability of the waters of Panjang Island for snorkling ecotourism activities. Biogeophysical data were collected by field survey. Method of data analysis comprises analysis of land and waters suitability and spatial analysis using GIS. Analysis results of the waters Panjang Island suitability for snorkling ecotourism activities categories class suitable at station 2, station 3, station 4, station 5 and station 6.Key words : Snorkeling ecotourism, waters suitable, Panjang island
Co-Authors Abdul Jabarsyah Abdur Rahman Adhyaksa Saktika Drestanto Agus Sabdono Aini, Firly Nur Alin Fithor Ambariyanto Ambariyanto Andi Izza Naafilah Ari B Abdulah Arief, Mochamad Candra Wirawan Aris Ismanto Asriadi Ayu Tri Fatma Ayu Tri Fatwa Baskoro Rochaddi Chrisna Adhi Suryono Denny Hendrik Nainggolan Dian Wijayanto Dinar Isyana Syah Rani Dwi Puspa Arini Fahrizal Amir Gazali Salim Gigih Budhiawan GS , Achmad Daengs Hadi Endrawati Hariyadi Hariyadi Heryoso Setiyono Himavan Prathista Nugraha Ibnu Pratikto Indah Susilowati Indriani Widhianingrum Iranda, Rama Irwani Irwani Jihadi, Muhammad Shulhan Joko Sutrisno Julian Ransangan Julian Ransangan Kun Retno Handayani M.Aslan, La Ode Maharani, Galung Dhiva Masayu Rahmia Anwar Putri, Masayu Rahmia Anwar Mazlan Mufrida Zein Mufrida Zein Muhammad Arif Romadhi Muhammad Firdaus Muhammad Helmi Muhammad Zainuri Mujiyanto Mujiyanto Mulyani Mulyani N. Nurjanah Nabila Nasrul Nawir, Daud Noor Zuhry, Noor Nugraeni, Christine Dyta Nugroho Agus D Nur Taufiq-Spj Ody Prajeki, Ody Permana Ari Soejarwo Permana Ari Soejarwo Permana Ari Soejarwo Prakoso, Lukman Yudho Raden Ario Rahadiya, Ardaffa Firdausy Ransangan, Julian Rezkyana Riky Rizky Rose Dewi Rozi Rozi, Rozi Rudhi Pribadi Rukisah, Rukisah Rusli Salim, Nasiatul Aisyah San Jose, Ariel E Satrioajie, Widhya Nugroho Setyani, Wilis Ari Sitti Hartinah DS Sri Redjeki Stephanie Bija Supriadi Supriadi Suriyanti Surya Agung Nugroho Suryanti Suryono Suryono Susiyanti Susiyanti Tony Hadibarata, Tony Widianingsih Widianingsih Wilis Ari Setyani Wilis Ari Setyati Wisnu Widyatmoko Yayuk Sugianti Yen Thi Hong Pham Yen Thi Hong Pham Yesaya Putra Pamungkas Zahidah Zahidah, Zahidah