Marine and Fishery Sector
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Vertical Variability and Its Relation to ENSO in the North Natuna Sea
ILMU KELAUTAN: Indonesian Journal of Marine Sciences June 2021 Vol 26(2):63-70 e-ISSN 2406-7598 Natuna Off-Shelf Current (NOC) Vertical Variability and Its Relation to ENSO in the North Natuna Sea Hariyadi1,2*, Johanes Hutabarat3, Denny Nugroho Sugianto1,4, Muhammad Faiq Marwa Noercholis1, Niken Dwi Prasetyani,1 Widodo S. Pranowo5, Kunarso1, Parichat Wetchayount6, Anindya Wirasatriya1,4 1Department of Oceanography, Faculty of Fisheries and Marine Science, Diponegoro University 2Doctoral Program of Marine Science, Diponegoro University 3Department of Aquaculture, Faculty of Fisheries and Marine Science, Diponegoro University 4Center for Coastal Rehabilitation and Disaster Mitigation Studies (CoREM), Diponegoro University Jl. Prof. H. Soedharto, SH, Tembalang Semarang. 50275 Indonesia 5Marine Research Center, Agency for Marine & Fisheries Research & Human Resources, Ministry of Marine and Fisheries Gedung Mina Bahari I 5th Floor, Jl. Medan Merdeka Timur No. 16 Jakarta Pusat 10110 Indonesia 6Department of Geography, Faculty of Social Science, Srinakharinwirot University 8 114 Sukhumvit 23, Bangkok, Thailand Email: [email protected] Abstract During the northwest monsoon (NWM), southerly flow off the Natuna Islands appeared as the extension of the turning Vietnam coastal jet, known as Natuna off-shelf current (NOC). NOC is generated by the interaction of wind stress and the North Natuna Sea’s bottom topography. The purposes of the present study is to investigate the vertical variability of NOC and its relation to El Niňo Southern Oscillation (ENSO) using Marine Copernicus reanalysis data. The vertical variability refers to the spatial distribution of NOC pattern at the surface layer, thermocline layer, and deep/bottom layer. in 2014 as representative of normal ENSO condition. -
Seasonal Fluctuations in the Surface Salinity Along the Coast of the Southern Part of Kalimantan (Borneo)
Mar. Res. Indonesia Vol.4, 1959: 1-25 SEASONAL FLUCTUATIONS IN THE SURFACE SALINITY ALONG THE COAST OF THE SOUTHERN PART OF KALIMANTAN (BORNEO). by Miss SJARMILAH SJARIF. SUMMARY The westerly current of the Java Sea from the southeast is branched to the north, along the eastcoast of Kalimantan (Borneo) as far as Cape Mangkalihat. This current brings high saline water, over 34.0°/oo, and in- creases the salinity along the coast of the southern part of Kalimantan, working together with the decreasing rains. In the westmonsoon, when the westward current has retreated and the easterly current from the South China Sea has developed, the northerly current along the eastcoast is replaced by a southerly current, from ,the Pacific. Under influence of the increasing rains and the large outflow of the rivers in the southern part of Kalimantan the salinity decreases rapidly, until a minimum value. This minimum is found irregularly during the diffferent months of the westmonsoon or the succeeding transition period. The lowest values are found in Sukadana Bay (29.0°/oo) and off Bandjarmasin (± 24.0°/oo). The further from this place, the higher the values. The maximum salinity is found during the months September and October in accordance with the minimum rainfall. The highest values are found in the eastern part of the investigated area (34.5°/oo). To the west it is lower, the more it is mixed with the low-saline water of the Java Sea. The salinity in the Karimata Strait is about 33.0 to 33.5°/oo. ZUSAMMENFASSUNG. Der nach Westen fuhrende Strom der Java See zweigt von Sudosten kommend entlang der Ostkuste Kalimantan (Borneo) nach Norden ab und reicht bis Kap Mangkalihat. -
Fish Drying in Indonesia
The Australian Centre for International Agricultural Research (ACIAR) was established in June 1982 by an Act of the Australian Parliament. Its mandate is to help identify agri cultural problems in developing countries and to commission collaborative research between Australian and developing country researchers in fields where Australia has a special research competence. Where trade names are used this constitutes neither endorsement of nor discrimination against any product by the Centre. ACIAR PROCEEDINGS This series of publications includes the full proceedings of research workshops or symposia organised or supported by ACIAR. Numbers in this series are distributed internationally to selected individuals and scientific institutions. Recent numbers in the series are listed inside the back cover. © Australian Centre for International Agricultural Research. GPO Box 1571, Canberra. ACT 2601 Champ. BR and Highley. E .• cd. 1995. Fish drying in Indonesia. Proceedings of an international workshop held at Jakarta. Indonesia. 9-10 February 1994. ACIAR Proceedings !'Io. 59. 106p. ISBN I 86320 144 0 Technical editing. typesetting and layout: Arawang Information Bureau Ply Ltd. Canberra. Australia. Fish Drying in Indonesia Proceedings of an international workshop held at Jakarta, Indonesia on 9-10 February 1994 Editors: B.R. Champ and E. Highley Sponsors: Agency for Agricultural Research and Development, Indonesia Australian Centre for International Agricultural Research Contents Opening Remarks 5 F. Kasryno Government Policy on Fishery Agribusiness Development 7 Ir. H. Muchtar Abdullah An Overview of Fisheries and Fish Proeessing in Indonesia 13 N. Naamin Problems Assoeiated with Dried Fish Agribusiness in Indonesia 18 Soegiyono Salted Fish Consumption in Indonesia: Status and Prospects 25 v.T. -
Ocean Wave Characteristics in Indonesian Waters for Sea Transportation Safety and Planning
IPTEK, The Journal for Technology and Science, Vol. 26, No. 1, April 2015 19 Ocean Wave Characteristics in Indonesian Waters for Sea Transportation Safety and Planning Roni Kurniawan1 and Mia Khusnul Khotimah2 AbstractThis study was aimed to learn about ocean wave characteristics and to identify times and areas with vulnerability to high waves in Indonesian waters. Significant wave height of Windwaves-05 model output was used to obtain such information, with surface level wind data for 11 years period (2000 to 2010) from NCEP-NOAA as the input. The model output data was then validated using multimission satellite altimeter data obtained from Aviso. Further, the data were used to identify areas of high waves based on the high wave’s classification by WMO. From all of the processing results, the wave characteristics in Indonesian waters were identified, especially on ALKI (Indonesian Archipelagic Sea Lanes). Along with it, which lanes that have high potential for dangerous waves and when it occurred were identified as well. The study concluded that throughout the years, Windwaves-05 model had a magnificent performance in providing ocean wave characteristics information in Indonesian waters. The information of height wave vulnerability needed to make a decision on the safest lanes and the best time before crossing on ALKI when the wave and its vulnerability is likely low. Throughout the years, ALKI II is the safest lanes among others since it has been identified of having lower vulnerability than others. The knowledge of the wave characteristics for a specific location is very important to design, plan and vessels operability including types of ships and shipping lanes before their activities in the sea. -
Regional Maritime Issues, Can the Indian Ocean Be Collaboratively Managed?
Regional Maritime Issues, Can the Indian Ocean be Collaboratively Managed? First Admiral Anuar bin Mohamed Assistant Chief of Staff Human Resource, Royal Malaysian Navy Can the Indian Ocean be Collaboratively Managed? It covers an area of 68.556 million sq km, which includes amongst others, the Andaman The Hypothesis: Collaboration could not be Sea, Arabian Sea, Bay of Bengal, Flores Sea, fully achieved in IOR, as long as there is a great Great Australian Bight, Gulf of Aden, Gulf of power politics that enhance the geopolitical and Oman, Java Sea, Mozambique Channel, Persian geostrategic struggles in the region. Gulf, Red Sea, Savu Sea, Strait of Malacca and Timor Sea. This is viewed through the lens of neo-realism, where the structural defects would eventually By comparison, it consists of an area that is make efforts for collaboration/cooperation almost 7 times the size of the United States. impossible. Bordering this ocean and the states around it is the 66,526 km coastlines. In arguing this, we need to understand the features of the IOR iot determined factors that In a nutshell, it covers 30% of the global ocean would affect the argument. area home to 30% of the world’s population and 30% of the world’s coral reef cover. Background Geographically : Economically: This ocean hosts abundant of natural Indian Ocean Region (IOR) has unique resources of oil and gas fields, fish, shrimp, characteristics compared to other oceanic sand and gravel aggregates, placer deposits and regions. poly-metallic nodules. It is the third largest of the world's five oceans, It also provide various major sea routes after the Pacific and the Atlantic Ocean. -
Length-Based Stock Assessment Area WPP
Report Code: AR_711_120820 Length-Based Stock Assessment Of A Species Complex In Deepwater Demersal Fisheries Targeting Snappers In Indonesia Fishery Management Area WPP 711 DRAFT - NOT FOR DISTRIBUTION. TNC-IFCP Technical Paper Peter J. Mous, Wawan B. IGede, Jos S. Pet AUGUST 12, 2020 THE NATURE CONSERVANCY INDONESIA FISHERIES CONSERVATION PROGRAM AR_711_120820 The Nature Conservancy Indonesia Fisheries Conservation Program Ikat Plaza Building - Blok L Jalan By Pass Ngurah Rai No.505, Pemogan, Denpasar Selatan Denpasar 80221 Bali, Indonesia Ph. +62-361-244524 People and Nature Consulting International Grahalia Tiying Gading 18 - Suite 2 Jalan Tukad Pancoran, Panjer, Denpasar Selatan Denpasar 80225 Bali, Indonesia 1 THE NATURE CONSERVANCY INDONESIA FISHERIES CONSERVATION PROGRAM AR_711_120820 Table of contents 1 Introduction 2 2 Materials and methods for data collection, analysis and reporting 6 2.1 Frame Survey . 6 2.2 Vessel Tracking and CODRS . 6 2.3 Data Quality Control . 7 2.4 Length-Frequency Distributions, CpUE, and Total Catch . 7 2.5 I-Fish Community . 28 3 Fishing grounds and traceability 32 4 Length-based assessments of Top 20 most abundant species in CODRS samples includ- ing all years in WPP 711 36 5 Discussion and conclusions 79 6 References 86 2 THE NATURE CONSERVANCY INDONESIA FISHERIES CONSERVATION PROGRAM AR_711_120820 1 Introduction This report presents a length-based assessment of multi-species and multi gear demersal fisheries targeting snappers, groupers, emperors and grunts in fisheries management area (WPP) 711, covering the Natuna Sea and the Karimata Strait, surrounded by Indonesian, Malaysian, Vietnamese and Singaporean waters and territories. The Natuna Sea in the northern part of WPP 711 lies in between Malaysian territories to the east and west, while the Karimata Strait in the southern part of WPP 711 has the Indonesian island of Sumatra to the west and Kalimantan to the east (Figure 1.1). -
Indonesian Seas by Global Ocean Associates Prepared for Office of Naval Research – Code 322 PO
An Atlas of Oceanic Internal Solitary Waves (February 2004) Indonesian Seas by Global Ocean Associates Prepared for Office of Naval Research – Code 322 PO Indonesian Seas • Bali Sea • Flores Sea • Molucca Sea • Banda Sea • Java Sea • Savu Sea • Cream Sea • Makassar Strait Overview The Indonesian Seas are the regional bodies of water in and around the Indonesian Archipelago. The seas extend between approximately 12o S to 3o N and 110o to 132oE (Figure 1). The region separates the Pacific and Indian Oceans. Figure 1. Bathymetry of the Indonesian Archipelago. [Smith and Sandwell, 1997] Observations Indonesian Archipelago is most extensive archipelago in the world with more than 15,000 islands. The shallow bathymetry and the strong tidal currents between the islands give rise to the generation of internal waves throughout the archipelago. As a result there are a very 453 An Atlas of Oceanic Internal Solitary Waves (February 2004) Indonesian Seas by Global Ocean Associates Prepared for Office of Naval Research – Code 322 PO large number of internal wave sources throughout the region. Since the Indonesian Seas boarder the equator, the stratification of the waters in this sea area does not change very much with season, and internal wave activity is expected to take place all year round. Table 2 shows the months of the year during which internal waves have been observed in the Bali, Molucca, Banda and Savu Seas Table 1 - Months when internal waves have been observed in the Bali Sea. (Numbers indicate unique dates in that month when waves have been noted) Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec 12111 11323 Months when Internal Waves have been observed in the Molucca Sea. -
Structural and Stratigraphic Evolution of the Savu Basin, Indonesia
Structural and stratigraphic evolution of the Savu Basin, Indonesia JAMES W. D. RIGG* & ROBERT HALL SE Asia Research Group, Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey TW20 0EX, UK *Corresponding author (e-mail: [email protected]) Abstract: The Savu Basin is located in the Sunda–Banda fore-arc at the position of change from oceanic subduction to continent–arc collision. It narrows eastward and is bounded to the west by the island of Sumba that obliquely crosses the fore-arc. New seismic data and published geological observations are used to interpret Australia–Sundaland convergence history. We suggest the basin is underlain by continental crust and was close to sea level in the Early Miocene. Normal faulting in the Middle Miocene and rapid subsidence to several kilometres was driven by subduction rollback. Arc-derived volcaniclastic turbidites were transported ESE, parallel to the Sumba Ridge, and then NE. The ridge was elevated as the Australian continental margin arrived at the Banda Trench, causing debris flows and turbidites to flow northwards into the basin which is little deformed except for tilting and slumping. South of the ridge fore-arc sediments and Australian sedimentary cover were incorporated in a large accretionary complex formed as continental crust was thrust beneath the fore-arc. This is bounded to the north by the Savu and Roti Thrusts and to the south by a trough connecting the Java Trench and Timor Trough which formed by south-directed thrust- ing and loading. The Savu Basin is situated in the fore-arc of the Roti and the Savu Basin connects the Timor Trough Sunda–Banda Arc (Fig. -
Pelagic Fish Catch Or Other Means Reposting, Photocopy Machine, Is Only W Permitted Around Java E Oceanography Society
or collective redistirbution of any portion article of any by of this or collective redistirbution Th THE INDONESIAN SEAS articleis has been in published Oceanography Seasonal Variation of 18, Number journal of Th 4, a quarterly , Volume Pelagic Fish Catch permitted only w is photocopy machine, reposting, means or other Around Java 2005 by Th e Oceanography Copyright Society. BY NANI HENDIARTI, SUWARSO, EDVIN ALDRIAN, of Th approval the ith KHAIRUL AMRI, RETNO ANDIASTUTI, gran e Oceanography is Society. All rights reserved. Permission SUHENDAR I. SACHOEMAR, or Th e Oceanography [email protected] Society. Send to: all correspondence AND IKHSAN BUDI WAHYONO ted to copy this article Repu for use copy this and research. to in teaching ted e Oceanography Society, PO Box 1931, Rockville, MD 20849-1931, USA. blication, systemmatic reproduction, reproduction, systemmatic blication, 112 Oceanography Vol. 18, No. 4, Dec. 2005 WE PRESENT DATA on the seasonal variability of small and 1.26 million ton/year in the Indonesian EEZ. Pelagic fi sh pelagic fi sh catches and their relation to the coastal processes play an important role in the economics of fi sherman in Indo- responsible for them around the island of Java. This study uses nesia; approximately 75 percent of the total fi sh stock, or 4.8 long fi sh-catch records (up to twenty years) collected at vari- million ton/year, is pelagic fi sh. In particular, we investigated ous points around Java that were selected from the best-qual- the waters around Java because most people live near the coast ity harbor records. -
CSIRO Report Template
OCEANS AND ATMOSPHERE Bioregions of the Indian Oceans Piers K Dunstan, Donna Hayes, Skipton N C Woolley, Lamona Bernawis, Scott D Foster, Emmanuel Chassot, Eugenie Khani, Rowana Walton , Laura Blamey, Uvicka Bristol, Sean Porter, Arul Ananthan Kanapatipillai, Natasha Karenyi, Babin Ingole, Widodo Pranowo, RA Sreepada, Mohamed Shimal, Natalie Bodin, Shihan Mohamed, Will White, Peter Last, Nic Bax, Mat Vanderklift, Rudy Kloser, Rudy Kloser, Leo Dutra and Brett Molony Bioregions of the Indian Oceans | i Citation Dunstan et al. 2020. Bioregions of the Indian Ocean. CSIRO, Australia. Copyright © Commonwealth Scientific and Industrial Research Organisation 20XX. To the extent permitted by law, all rights are reserved and no part of this publication covered by copyright may be reproduced or copied in any form or by any means except with the written permission of CSIRO. Important disclaimer CSIRO advises that the information contained in this publication comprises general statements based on scientific research. The reader is advised and needs to be aware that such information may be incomplete or unable to be used in any specific situation. No reliance or actions must therefore be made on that information without seeking prior expert professional, scientific and technical advice. To the extent permitted by law, CSIRO (including its employees and consultants) excludes all liability to any person for any consequences, including but not limited to all losses, damages, costs, expenses and any other compensation, arising directly or indirectly from using this publication (in part or in whole) and any information or material contained in it. CSIRO is committed to providing web accessible content wherever possible. -
Evidence for Sympatric Speciation in a Wallacean Ancient Lake
ORIGINAL ARTICLE doi:10.1111/evo.13821 Evidence for sympatric speciation in a Wallacean ancient lake Nobu Sutra,1 Junko Kusumi,2 Javier Montenegro,1 Hirozumi Kobayashi,1 Shingo Fujimoto,3 Kawilarang W. A. Masengi,4 Atsushi J. Nagano,5 Atsushi Toyoda,6 Masatoshi Matsunami,3 Ryosuke Kimura,3 and Kazunori Yamahira1,7 1Tropical Biosphere Research Center, University of the Ryukyus, Okinawa 903-0213, Japan 2Faculty of Social and Cultural Studies, Kyushu University, Fukuoka 819-0395, Japan 3Graduate School of Medicine, University of the Ryukyus, Okinawa 903-0125, Japan 4Faculty of Fisheries and Marine Science, Sam Ratulangi University, Manado 95115, Indonesia 5Faculty of Agriculture, Ryukoku University, Otsu 520-2194, Japan 6Comparative Genomics Laboratory, National Institute of Genetics, Mishima 411-8540, Japan 7E-mail: [email protected] Received March 4, 2019 Accepted August 3, 2019 Sympatric speciation has been demonstrated in few empirical case studies, despite intense searches, because of difficulties in testing the criteria for this mode of speciation. Here, we report a possible case of sympatric speciation in ricefishes of the genus Oryzias on Sulawesi, an island of Wallacea. Three species of Oryzias are known to be endemic to Lake Poso, an ancient tectonic lake in central Sulawesi. Phylogenetic analyses using RAD-seq-derived single nucleotide polymorphisms (SNPs) revealed that these species are monophyletic. We also found that the three species are morphologically distinguishable and clearly separated by population-structure analyses based on the SNPs, suggesting that they are reproductively isolated from each other. A mitochon- drial DNA chronogram suggested that their speciation events occurred after formation of the tectonic lake, and existence of a historical allopatric phase was not supported by coalescent-based demographic inference. -
1 Investigation of the Energy Potential from Tidal Stream
INVESTIGATION OF THE ENERGY POTENTIAL FROM TIDAL STREAM CURRENTS IN INDONESIA Kadir Orhan1, Roberto Mayerle1, Rangaswami Narayanan1 and Wahyu Widodo Pandoe2 In this paper, an advanced methodology developed for the assessment of tidal stream resources is applied to several straits between Indian Ocean and inner Indonesian seas. Due to the high current velocities up to 3-4 m/s, the straits are particularly promising for the efficient generation of electric power. Tidal stream power potentials are evaluated on the basis of calibrated and validated high-resolution, three-dimensional numerical models. It was found that the straits under investigation have tremendous potential for the development of renewable energy production. Suitable locations for the installation of the turbines are identified in all the straits, and sites have been ranked based on the level of power density. Maximum power densities are observed in the Bali Strait, exceeding around 10kw/m2. Horizontal axis tidal turbines with a cut-in velocity of 1m/s are considered in the estimations. The highest total extractable power resulted equal to about 1,260MW in the Strait of Alas. Preliminary assessments showed that the power production at the straits under investigation is likely to exceed previous predictions reaching around 5,000MW. Keywords: renewable energy; tidal stream currents; numerical model; Indonesia INTRODUCTION The global energy supply is facing severe challenges in terms of long-term sustainability, fossil fuel reserve exhaustion, global warming and other energy related environmental concerns, geopolitical and military conflicts surrounding oil rich countries, and secure supply of energy. Renewable energy sources such as solar, wind, wave and tidal energy are capable of meeting the present and future energy demands with ease without inflicting any considerable damage to global ecosystem (Asif et al.