Reconstructing historical trends of small pelagic fish in the Java Sea using standardized commercial trip based catch per unit of effort

Understanding the dynamics of marine fish resources and its ecosystems requires long term historical data from a particular fisheries in a certain area.

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ANALISIS STRUKTUR POPULASI TIGA SPECIES LAYANG (Decapterus spp.) DI LAUT JAWA DAN SEKITAR SULAWESI: Saran Pengelolaan Berkelanjutan Ikan Pelagis Kecil dan Evaluasi WPP

Jurnal Kebijakan Perikanan Indonesia ◽

10.15578/jkpi.6.2.2014.75-86 ◽

2015 ◽

Vol 6 (2) ◽

pp. 75

Author(s):

Suwarso Suwarso ◽

Achmad Zamroni

Keyword(s):

Population Structure ◽

Sustainable Management ◽

Pelagic Fish ◽

Management Unit ◽

Distribution Area ◽

Small Pelagic Fish ◽

Management Units ◽

Java Sea ◽

Genetic Characters ◽

Pelagic Fisheries

Dua species ikan layang (Decapterus russelli dan D. macrosoma) merupakan komponen utama dalam perikanan pelagis di Laut Jawa dan Selat Makasar, ikan layang biru/malalugis (D. macarellus) adalah jenis dominan di perairan laut dalam sekitar Sulawesi dan Indonesia timur. Analisis struktur populasi tiga spesies layang tersebut dilaksanakan berdasarkan data struktur populasi (mtDNA) untuk memberikan saran pengelolaan berkelanjutan dan evaluasi WPP (Wilayah Pengelolaan Perikanan). Hasil menunjukkan dari masing-masing dua unit stok tiap species yang terditeksi setiap unit stok/unit biologi yang juga merupakan unit manajemen memiliki sebaran ‘spatial’ yang tidak selalu terbatas di suatu WPP, tetapi sangat dimungkinkan menyebar ‘lintas’ WPP (dua atau lebih WPP) yang umumnya memiliki karakteristik habitat sama; sedangkan keragaman habitat seringkali terlihat dalam satu WPP. Untuk tujuan pengelolaan secara berkelanjutan, pengelolaan sumber daya ikan pelagis kecil disarankan berbasis pada unit manajemen serta meliputi daerah sebaran dari unit manajemen tersebut. Daerah sebaran tersebut mungkin terdapat dalam satu WPP, tetapi seringkali akan meliputi dua atau lebih WPP (lintas WPP). Stok layang (Decapterus russelli dan D. macrosoma) Laut Jawa dan Selat Makasar (dua WPP) disarankan dikelola sebagai satu unit manajemen; sedangkan, stok malalugis yang memiliki ciri genetic sama yang tersebar lintas WPP Selat Makasar (bagian selatan), Teluk Bone, Teluk Tolo, Laut Flores, Laut Banda, Teluk Tomini dan Laut Maluku, disarankan dikelola sebagai satu unit manajemen; unit stok Laut Sulawesi dikelola secara terpisah sebagai unit manajemen yang berbeda. Dalam konteks perikanan layang di Laut Jawa fakta struktur populasinya (kasus D. macrosoma) tidak menunjukkan indikasi migrasi layang dari arah timur (Laut Banda atau Laut Flores) ke arah Laut Jawa seperti dihypotesakan oleh Hardenberg (1938). Two species of scads (Decapterus russelli and D. macrosoma) is a major component in the pelagic fisheries in the Java Sea and Makassar Strait, the mackerel-scads / malalugis (D. macarellus) is the dominant species around Sulawesi and the eastern waters of Indonesia. Population structure anlyses of those three species of layang was implemented to give a sustainable management options and FMA evaluation, based on the population structure data (mtDNA). Results show from each two stock units by species detected each stock unit / units of biology is a management unit which is have a spatially distribute not only in one WPP/FMA, but it is possible to spread ‘cross’ of FMA (two or more FMA ) which is generally has the same habitat; whereas, the diversity of habitats are often exist. For the purpose of sustainable management, a management of small pelagic fish is recommended based on management units that covers an area of distribution of its management unit. This distribution area may be contained in one FMA, but often will include two or more FMA. Stock of scads (Decapterus russelli and D. macrosoma) in the Java Sea and Makassar Strait (two WPP) suggested to manage as a unit of management; whereas, stock malalugis with the same genetic characters that are spread across in the FMA of Makassar Strait (south), Bone Bay, Tolo Bay, Flores Sea, Banda Sea, Tomini and Maluku Sea, it is suggested to managed as a single unit of management; however, the stock of Celebes Sea are managed separately as different management units. In the context of Java Sea fisheries the fact of the population structure (in case of D. macrosoma) did not shows an indication of west ward migration (Banda Sea-Flores Sea) to the Java Sea like a Hardenberg (1938) hyphotese.

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How do El Niño Southern Oscillation events impact on small pelagic fish catches in the west Java Sea

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/176/1/012014 ◽

2018 ◽

Vol 176 ◽

pp. 012014

Author(s):

M Syamsuddin ◽

Sunarto ◽

L Yuliadi

Keyword(s):

El Niño ◽

El Nino ◽

Southern Oscillation ◽

Pelagic Fish ◽

El Niño Southern Oscillation ◽

El Nino Southern Oscillation ◽

The West ◽

Small Pelagic Fish ◽

West Java ◽

Java Sea

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KAPASITAS PENANGKAPAN PUKAT CINCIN MINI DI PEMALANG

Jurnal Penelitian Perikanan Indonesia ◽

10.15578/jppi.15.2.2009.171-178 ◽

2017 ◽

Vol 15 (2) ◽

pp. 171

Author(s):

Erfind Nurdin ◽

Tri Wahyu Budiarti

Keyword(s):

Data Envelopment Analysis ◽

Capacity Utilization ◽

Pelagic Fish ◽

Fish Stock ◽

Data Envelopment ◽

Small Pelagic Fish ◽

Fishing Capacity ◽

Java Sea ◽

Fishery Status ◽

Dea Method

Sumber daya ikan pelagis kecil di Laut Jawa merupakan komoditi perikanan yang penting dan bersifat strategis. Sejalan dengan perkembangan pemanfaatannya, tekanan penangkapan yang tinggi dialami oleh hampir seluruh kawasan, terlebih di wilayah tradisionil. Kapasitas penangkapan akhir-akhir ini menjadi isu penting dalam perikanan global, mengingat di berbagai kawasan terjadi kapasitas berlebih dan penurunan stok ikan. Salah satu cara untuk mengetahui status perikanan terkini dilakukan dengan mengukur kapasitas perikanan. Penelitian ini dilakukan pada bulan Mei dan Juli tahun 2007 dengan metode Data Envelopment Analysis. Nilai rata-rata pemanfaatan variabel input (VIU) untuk daya lampu dan bahan bakar menunjukkan nilai di atas 1 (optimum = 1) yang mengindikasikan adanya kelebihan penggunaan variabel sehingga dipandang perlu untuk melakukan pengurangan variabel input. Nilai pemanfaatan kapasitas (CU) lebih besar dari 0,5 hampir mencapai 60% dari 106 kapal contoh. Hal ini menunjukkan bahwa nilai CU kurang dari 1 mendominansi distribusi perolehan nilai CU yang dapat diartikan telah terjadi kelebihan kapasitas pemanfaatan untuk penangkapan pukat cincin mini dengan basis di Pemalang, sehingga perlu upaya pengurangan kapasitas. Small pelagic fish resource in Java sea is an important fishery commodity. Nowadays high fishing pressure is experienced by mostly fishing areas, particularly in traditional zone. Fishing capacity recently becomes important issue in global fishery, because over capacity and fish stock decreasing is occured in various areas. One method to know the fishery status is by measuring fishery capacity, which is categorized as over capacity, under capacity or optimal condition. This study was carried out on May and July 2007. The method applied in this measurement of fishing capacity was DEA method (Data Envelopment Analysis). The average of variable input utilization for light intensity and fuel showed value of more than 1 (optimum = 1), indicating the usage of excess variable that need to reduce the input variable. The value of higher than 0.5 of capacity utilization showed 60% from 106 ships sample. This indicates that the CU value of less than 1 dominated the distribution of capacity utilization value. For mini purse seine based in Pemalang showed over capacity. This means, it needs to reduce the effort of fishing capacity.

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SPATIO TEMPORAL DISTRIBUTION OF SMALL PELAGIC FISH IN THE JAVA SEA

Indonesian Fisheries Research Journal ◽

10.15578/ifrj.14.1.2008.21-35 ◽

2017 ◽

Vol 14 (1) ◽

pp. 21

Author(s):

Wijopriono Wijopriono

Keyword(s):

Fuel Consumption ◽

Temporal Distribution ◽

Pelagic Fish ◽

Small Pelagic Fish ◽

Commercial Fish ◽

Fish Schools ◽

Java Sea ◽

Spatio Temporal ◽

The Rich ◽

The Cost

Time spent in seeking fish schools and potential fishing areas is the main source of fuel consumption, and it is a significant factor in raising the cost of fishing operation. Therefore, knowledge of the distribution pattern lnd aggregations of commercial fish in space and time is of considerable financial value to the fishers anAlisnlng industry because it will assist them to reduce the time and fuel consumption of the boats in locating the rich fishing grounds.

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POTENTIAL PRODUCTION OF THE FIVE PREDOMINANT SMALL PELAGIC FISH SPECIES GROUPS IN THE JAVA SEA

Indonesian Fisheries Research Journal ◽

10.15578/ifrj.20.2.2014.59-67 ◽

2014 ◽

Vol 20 (2) ◽

pp. 59 ◽

Cited By ~ 1

Author(s):

Purwanto Purwanto ◽

Duto Nugroho ◽

Suwarso Suwarso

Keyword(s):

Fish Species ◽

Fishing Effort ◽

Maximum Sustainable Yield ◽

Pelagic Fish ◽

Fish Stock ◽

Potential Production ◽

Small Pelagic Fish ◽

Java Sea ◽

Species Groups ◽

Pelagic Fishery

The Java Sea is one of the important fishing areas for small pelagic fishery in Indonesia. The production of the fishery was dominated by five fish species groups. To support the management of that fishery, an assessment of the stock of the five predominant small pelagic fish species groups was conducted. Based on the result of analysis, the maximum sustainable yield (MSY) of the stock of five predominant small pelagic fish species was about 244.6 thousand tons. Meanwhile, the MSY of the stock of the whole exploitable small pelagic fish species was about 315.5 thousand tons. The optimum fishing effort (EMSY) was 1032 units. The total fishing effort was higher than EMSY and the fish stock was likely over-exploited since 2000. To ensure the optimal fish production of the small pelagic fish stock in the Java Sea, it is necessary to recover fish stock by controlling fishing effort to EMSY. The time which it takes for the fish stock to recover was about two years when fishing effort was reduced from its level in 2009 to EMSY.

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Trend analysis of catching fish Decapterus sp. in the Muncar Coastal Fisheries Port, Banyuwangi, Indonesia

Indonesian Journal of Tropical Aquatic ◽

10.22219/ijota.v3i2.12939 ◽

2020 ◽

Vol 3 (2) ◽

Author(s):

Devi Purwinda ◽

Hany Handajani ◽

Anis Zubaidah

Keyword(s):

Time Series ◽

Secondary Data ◽

Pelagic Fish ◽

Research Data ◽

Catch Per Unit Effort ◽

Small Pelagic Fish ◽

Coastal Fisheries ◽

Fish Resources ◽

Flying Fish ◽

Java Sea

Small pelagic fish resources in the Java Sea, especially Banyuwangi, are dominated by catches of Decapterus sp, which are mostly landed at the UPT of the Coastal Fisheries Port Muncar. This study aimed to provide information on CPUE trends (Catch Per Unit Effort) and the seasonality of flying fish in the Coastal Fisheries Port Muncar as an effort to encourage effective and sustainable in using of fishery resources. The method used in this study was a survey. The research data was obtained through secondary data including time series of the production of catches of flying fish, and trip data of purse seine, payang and bagan from 2015 to 2019 collected by Coastal Fisheries Port Muncar. The analysis used the CPUE analysis by comparing catches to capture attempts. The results showed, from 2015 to 2019, the highest CPUE of flying fish occurred in 2019, amounting to 13 365.5 kg/trip, while the lowest CPUE occurred in 2016 amounted to 1 050.6 kg/trip. The trend of CPUE flying fish from 2015 to 2019 experienced a fluctuating increase with an average of 7 327.5 kg/trip. A good season for flying fishing occurs from May to December, and shares a peak in December, while famine occurs in January.

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Climate Change and Small Pelagic Fish

10.1017/cbo9780511596681 ◽

2001 ◽

Cited By ~ 48

Keyword(s):

Climate Change ◽

Pelagic Fish ◽

Small Pelagic Fish

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The box-balance model: a new tool to assess fish larval survival, applied to field data on two small pelagic fish

Marine Ecology Progress Series ◽

10.3354/meps13369 ◽

2020 ◽

Vol 650 ◽

pp. 289-308 ◽

Cited By ~ 2

Author(s):

V Raya ◽

J Salat ◽

A Sabatés

Keyword(s):

Field Data ◽

Fish Larvae ◽

Larval Growth ◽

Warming Trend ◽

Mortality Rates ◽

Larval Survival ◽

Pelagic Fish ◽

Balance Model ◽

Small Pelagic Fish ◽

Mesoscale Structures

This work develops a new method, the box-balance model (BBM), to assess the role of hydrodynamic structures in the survival of fish larvae. The BBM was applied in the northwest Mediterranean to field data, on 2 small pelagic fish species whose larvae coexist in summer: Engraulis encrasicolus, a dominant species, and Sardinella aurita, which is expanding northwards in relation to sea warming. The BBM allows one to quantify the contribution of circulation, with significant mesoscale activity, to the survival of fish larvae, clearly separating the effect of transport from biological factors. It is based on comparing the larval abundances at age found in local target areas, associated with the mesoscale structures (boxes), to those predicted by the overall mortality rate of the population in the region. The application of the BBM reveals that dispersion/retention by hydrodynamic structures favours the survival of E. encrasicolus larvae. In addition, since larval growth and mortality rates of the species are required parameters for application of the BBM, we present their estimates for S. aurita in the region for the first time. Although growth and mortality rates found for S. aurita are both higher than for E. encrasicolus, their combined effect confers a lower survival to S. aurita larvae. Thus, although the warming trend in the region would contribute to the expansion of the fast-growing species S. aurita, we can confirm that E. encrasicolus is well established, with a better adapted survival strategy.

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