scholarly journals SPATIAL DISTRIBUTION OF TUNA LARVAE IN THE BANDA SEA WITH RELATION TO ITS CONSERVATION

2019 ◽  
Vol 44 (2) ◽  
pp. 82-90
Author(s):  
Ahmad Romdon ◽  
Muhammad Fadli ◽  
Yance Hehuwat ◽  
La Pay ◽  
Widhya Nugroho Satrioajie ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Fisheries Management ◽  
Average Length ◽  
Development Stage ◽  
Fishing Ground ◽  
Spawning Ground ◽  
Conservation Area ◽  
Management Area ◽  
Tuna Fishing ◽  
Important Input

Tuna is the single valuable export fishery commodity in Indonesia, and Banda Sea is one of the main tuna fishing ground which belongs to fisheries management area (FMA) 714. More recently, the northern part of the Banda Sea has been preserved for tuna conservation since January 2015. The reason for this restriction is due to a preliminary of tuna spawning ground was adopted based on the scientific finding. Although conservation area has been enacted, information on the distribution of tuna larvae as a key variable for establishing conservation area in the Banda Sea needs to be improved through scientific findings. This study aims to provide the information on the tuna larvae encompassing the spatial distribution and tuna larval development stage as an important input to establish tuna conservation area. Tuna larvae data collection were carried out from several onboard surveys for more than four decades. Those study consisted of 21 surveys by using three types of gears to collect tuna larvae. Total of 143 stations was sampled from these surveys and tuna larvae were found in 57 stations. The average length of larvae specimens was 7.36 ± 0.33 mm. In general, tuna larvae found in the Banda Sea were in the pre-flexion, flexion, and post-flexion stage and larvae in pre-flexion stage found in the nearshore area. We concluded that the result of this study confirmed the hypothesis that tuna might spawn in the Banda Sea. Therefore, to strengthen this finding, studies on tuna larvae should be conducted regularly to clarify properly that the Banda Sea is an important tuna conservation zone.

scholarly journals Skipjack Tuna Fishing Ground Based on Oceanography Satellite Image Data in Fisheries Management Area (FMA) 713

2020 ◽  
pp. 51-60
Author(s):  
. Safruddin ◽  
Rachmat Hidayat ◽  
Mukti Zainuddin
Keyword(s):  
Chlorophyll A ◽  
Fisheries Management ◽  
Satellite Image ◽  
Image Data ◽  
Sea Surface ◽  
Fishing Ground ◽  
Skipjack Tuna ◽  
Management Area ◽  
Tuna Fishing ◽  
Satellite Image Data

This study aimed to map the oceanographic conditions and, based on that, to determine the favorable condition of skipjack tuna fishing ground in Fisheries Management Area (FMA) 713. This condition includes sea surface temperature (SST) and chlorophyll-a concentration. The primary data, such as fishing ground position and fish catch per trip, was collected by following the fishing operations that utilized pole and line (in Bone Gulf and Flores Sea) and purse seine fishing operations (in Makassar Strait). The secondary data, such as SST and chlorophyll-a, was derived from oceanographic satellite image data. The result showed that from January to August 2019, the skipjack tuna tends to occupy off shore areas where the sea surface temperature is between 29 - 29.5 oC and the chlorophyll-a density is between 0.10 to 0.15 mg.m3.

scholarly journals Fishing Ground Mapping Based on Chlorophyll-A Distribution Using Aqua Modis Satellite Imagery in The Fisheries Management Area (FMA) 712

2021 ◽  
Vol 324 ◽  
pp. 01007
Author(s):  
Yulius Yulius ◽  
Vaninda Aidina ◽  
Muhammad Ramdhan ◽  
August Daulat
Keyword(s):  
Chlorophyll A ◽  
Fisheries Management ◽  
Satellite Imagery ◽  
Time Series Data ◽  
Monsoon Season ◽  
Fishing Ground ◽  
Series Data ◽  
Chlorophyll A Concentration ◽  
Management Area ◽  
Java Sea

The fishing ground is identical and closely related to chlorophyll-a abundance in the waters, associated with its fisheries potential. This research has been conducted to determine the concentration and distribution of chlorophyll-a in the seas, especially in the Fisheries Management Area (FMA) 712 encompassing the Java Sea. The analysis used monthly time-series data collected from the satellite imagery over the last 11 years, taken through the ERDDAP website. The mean concentration of chlorophyll-a in the study area was 1.13 mg/l in June 2013. Based on 11 years of data processing, it can be concluded that the highest concentration of chlorophyll-a occurred in the west monsoon season from November to April, where increased rainfall caused the nutrient wash from terrestrial to the open waters. The lowest chlorophyll-a concentration happened in the east monsoon season from April to November, where the dry season arrived. The existence of pelagic fishes in FMA 712, such as Sardinella Lemurs and Sardinella Fimbriata, in waters highly influenced by the chlorophyll-a concentration, while Thunnus Sp. and Exocoetidae Sp. not affected significantly to the existence of chlorophyll-a concentration and its distribution.

scholarly journals UPAYA-UPAYA PENGELOLAAN SUMBER DAYA IKAN YANG BERKELANJUTAN DI INDONESIA

2017 ◽  
Vol 3 (2) ◽  
pp. 101
Author(s):  
Suherman Banon Atmaja ◽  
Duto Nugroho
Keyword(s):  
Fisheries Management ◽  
Fishery Management ◽  
Legal Aspects ◽  
Conservation Areas ◽  
Community Based ◽  
Conservation Area ◽  
Fishery Resource ◽  
Fish Resources ◽  
Management Area ◽  
Ecological Consideration

Pengertian dasar untuk pengelolaan perikanan terkait dengan fungsi fungsi biologi, sosial, teknologi, ekonomi serta lingkungan sumber daya sebagai komponen yang saling berhubungan untuk terjaminnya pengelolaan secara berkelanjutan. Stok ikan, ekosistem dan masyarakat nelayan merupakan salah satu kesatuan yang tidak dapat dipisahkan dalam sistem yang dinamis, dimana perubahan taktik dan strategi pemanfaatan masih merupakan suatu hal yang banyak dilakukan dalam rangka penyesuaian antara faktor teknis dan ekonomis yang sering kali mengabaikan pertimbangan bio-ekologi sumberdaya ikan. Sasaran pendekatan dan kebijakan pengelolaan perikanan di berbagai negara sudah mulai berubah, diawali dengan pendekatan memaksimalkan tangkapan tahunan dan ketenaga-kerjaan menuju ke konservasi dan pengelolaan berbasis pelayanan ekosistem. Konsep pengelolaan berbasis masyarakat dan ko-manajemen masih terbatas pada pengelolaan kawasan konservasi dan habitat terumbu karang. Adanya kesenjangan dan perbedaan antara kepentingan kawasan konservasi sebagai akibat kurangnya pemahaman kolektif terhadap tujuan pengelolaan, dan kerapkali menyebabkan aktifitas perikanan tangkap sebagai bagian dari kebutuhan ekonomis berbenturan dengan fungsi kawasan konservasi dalam jangka panjang. Pengendalian upaya penangkapan dan memahami dinamika perikanan, serta mengelola nelayan menjadi prioritas untuk pengelolaan sumber daya ikan, sedangkan konsep pengelolaan berbasis masyarakat dan ko-manajemen ditempatkan sebagai pelengkap untuk menutupi kelemahan aspek legal wilayah pengelolaan perikanan atau sumber daya ikan.Basic understanding of fisheries management related to biology, social, technology and economic function of fish resources. Fish stocks, ecosystem and fishers community are the integrated component under the dynamic of fisheries system, where as changing and on fishing tactic and strategy still exist to adjust between biology, technics and economics aspects. It is obvious that all technological creeps oftenly ignored the bio-ecological consideration of fish resources. The fisheries management and its policy were gradually shifting from maximize the catch, job opportunity become conservation and ecosystem based fisheries management. The concept of community-based management and co management is still limited to the management of conservation areas and coral reef habitats. The existence of gaps and differences between the interests of the conservation area as a result of a lack of understanding collective to the management objectives and often causing fishing activities as part of the economic needs clash with the function of conservation areas in the long term. Control efforts to capture and understand the dynamics of fisheries, as well as managing fishing is a priority for the management of fish resources, while the concept of community-based management and co management issued as a supplement to cover the weakness of legal aspects of the fishery management area or fishery resource.

scholarly journals Fleet diversity of squid fisheries in Indonesia Fisheries Management Area – 711

2021 ◽  
Vol 800 (1) ◽  
pp. 012007
Author(s):  
Suryanto ◽  
D Oktaviani ◽  
D Nugroho ◽  
R F Anggawangsa
Keyword(s):  
Fisheries Management ◽  
Management Area

scholarly journals Assessment on the governance of fisheries management at fishery management area in Indonesia

2021 ◽  
Vol 716 (1) ◽  
pp. 012022
Author(s):  
Umi Muawanah ◽  
Nendah Kurniasari ◽  
Radityo Pramodha ◽  
Armen Zulham ◽  
Lathifatul Rosyidah
Keyword(s):  
Fisheries Management ◽  
Fishery Management ◽  
Management Area

scholarly journals ASPEKBIOLOGI IKANKURISI (Nemipterus japonicus) DI PERAIRANTELUKBANTEN

2016 ◽  
Vol 8 (1) ◽  
pp. 21
Author(s):  
Selvi Oktaviyani ◽  
Mennofatria Boer ◽  
Yonvitner Yonvitner
Keyword(s):  
Fisheries Management ◽  
Average Length ◽  
Maturity Stage ◽  
Allometric Growth ◽  
Fishing Activity ◽  
Fish Resources ◽  
Nemipterus Japonicus ◽  
Males And Females ◽  
Biological Aspects ◽  
First Maturity

<p>Ikan kurisi (<em>Nemipterus japonicus</em>) merupakan salah satu sumber daya ikan ekonomis penting di Perairan Teluk Banten dan banyak didaratkan di Pelabuhan Perikanan Nusantara (PPN) Karangantu, Banten. Intensitas penangkapan yang tinggi akan menyebabkan tangkap lebih (<em>overfishing</em>), sehingga mengancam kelestarian ikan kurisi. Penelitian ini bertujuan untuk mengetahui beberapa aspek biologi ikan kurisi di Perairan Teluk Banten, seperti struktur ukuran panjang, rasio kelamin, hubungan panjang berat, tingkat kematangan gonad, ukuran panjang rata-rata tertangkap (Lc) dan ukuran pertama kali matang gonad (Lm). Informasi yang diperoleh dapat menjadi bahan pertimbangan dalam kegiatan pengelolaan perikanan. Lokasi pengambilan contoh dilakukan di Pelabuhan Perikanan Nusantara (PPN) Karangantu, Banten dari bulan Mei hingga Agustus 2012. Hasil penelitian menunjukkan bahwa ukuran panjang total ikan kurisi<em> </em>berkisar antara 98 dan 211 mm. Perbandingan kelamin jantan dan betina dalam keadaan seimbang dan memiliki pola pertumbuhan allometrik negatif yang menunjukkan pertumbuhan panjang lebih cepat dibandingkan pertumbuhan beratnya. Lebih dari 50% ikan-ikan yang diamati baik jantan maupun betina selama bulan pengamatan belum matang gonad (<em>immature</em>).  Ukuran pertama kali matang gonad adalah 196 mm sedangkan ukuran panjang rata-rata tertangkap adalah 146 mm. Banyaknya ikan yang tertangkap dalam ukuran kecil (kurang dari panjang pertama kali matang gonad) akan mengganggu kelestarian ikan kurisi.</p><p><em><br /></em></p><p><em>Japanese threadfin bream </em>(Nemipterus japonicus<span style="text-decoration: underline;">)</span><em> is one of the most important economical fish resources in the Gulf of Banten and many landed at Archipelago Fishing Port (PPN) of Karangantu. High intensity of fishing activity can cause an overfihing, and threat sustainability of japanese threadfin bream. The research was aimed to determine some biological aspects of japanese threadfin bream in the Gulf of Banten, such as structure of the length, sex ratio, length-weight relationship, gonad maturity stage, the average length of captured (Lc) and the length of first maturity (Lm). It is believed that the collected information can be taken into consideration in the fisheries management activities. The sample was collected at PPN Karangantu, Banten from May to August 2012. The result showed that the length of </em><em>this fish </em><em>ranged between 98 and 211 mm. Ratio of male and female is balance and have negative allometric growth pattern show that the length of growth is more faster than the weight of growth. More than 50% of fish sample both males and females were immature gonads. During observation, length of  first maturity was 196 mm and the average length of captured was 146 mm. </em><em>Many fishes caught was smaller than Lm, It will interfere the sustainability of japanese threadfin bream.</em></p>

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