Prediction of Demersal Fishing Ground Associated with Coral Reefs in the Coastal Jepara Regency, Central Java, Indonesia Based on Sentinel 2a Imagery

ABSTRACTThe waters of Northern Nias, North Sumatra Province have a great potential for natural resources, one of which is the reef which is often used as a fishing ground. This study aims to identify and monitor the distribution of coral reefs around the waters of Northern Nias. The location of study is limited by coordinates 97° 0'31'' - 97° 16'54'' E and 1° 29'2'' LU - 1° 6'24'' N. The study locations were grouped in 6 (six) areas including Mardika reef, Wunga reef, Mausi1 reef, Mausi2 reef, Tureloto reef and Senau reef. The data used were Sentinel 2A imagery acquisition on 19 September 2018 and field observations made on 6-12 September 2018. Data processing includes geometric correction, radiometric correction, water column correction and classification using pixel-based and object-based methods as well as by delineating on the image. One classification method will be chosen that is most suitable for the location of the reef. The results show Sentinel 2A was very helpful in mapping the distribution of coral reefs compared to direct observation in the field. The use of image classification method rightly is very helpful in distinguishing coral reef objects from surrounding objects. The estimated area of coral reefs was 1,793.20 ha with details of the Mardika reef 143.27 ha, Wunga reef 627.06 ha, Mausi1 reef 299.84 ha, Mausi2 reef 141.873 ha, Tureloto reef 244.73 ha, Senau reef 336.44 ha. The existence of coral reefs have a high potential as a fishing ground and a natural tourist attraction.Keywords: coral reefs, sentinel 2A, lyzenga 1978, image classification, Northern NiasABSTRAKPerairan Nias Utara yang terletak di Provinsi Sumatra Utara memiliki potensi kekayaan alam yang besar dimana salah satunya adalah gosong karang yang sering dijadikan lokasi penangkapan ikan oleh nelayan. Penelitian ini bertujuan untuk mengidentifikasi dan monitoring sebaran gosong karang di sekitar perairan Nias Utara. Lokasi penelitian dibatasi dengan koordinat 97°0’31’’ - 97°16’54’’ BT dan 1°29’2’’LU – 1°6’24’’ LU. Untuk mempermudah dalam pengolahan data maka lokasi kajian dikelompokkan dalam 6 (enam) kawasan diantaranya gosong Mardika, gosong Wunga, gosong Mausi1, gosong Mausi2, gosong Tureloto dan gosong Senau. Data yang digunakan adalah citra satelit Sentinel 2A hasil perekaman tanggal 19 September 2018 dan hasil pengamatan lapangan yang telah dilakukan pada tanggal 6 - 12 September 2018. Pengolahan data meliputi koreksi geometrik, koreksi radiometrik, koreksi kolom air dan klasifikasi menggunakan metode klasifikasi berbasis piksel dan berbasis objek serta deliniasi citra. Dari ketiga metode klasifikasi tersebut akan dipilih satu metode klasifikasi yang sesuai dengan lokasi gosong karang. Hasil penelitian menunjukkan citra Sentinel 2A sangat membantu dalam memetakan sebaran gosong karang dibandingkan dengan pengamatan langsung di lapangan. Pemilihan metode klasifikasi citra satelit yang tepat sangat membantu dalam membedakan objek gosong karang dengan objek di sekitarnya. Estimasi total luasan gosong karang di perairan Nias Utara adalah 1,793.20 ha dengan rincian luasan gosong karang Mardika 143.27 ha, gosong Wunga 627.06 ha, gosong Mausi1 299.84 ha, gosong Mausi2 141.873 ha, gosong Tureloto 244.73 ha, gosong Senau 336.44 ha. Keberadaan gosong karang memiliki potensi yang tinggi sebagai lokasi penangkapan ikan dan memiliki daya tarik sebagai tempat wisata alam.Kata kunci: gosong karang, sentinel 2A, lyzenga 1978, klasifikasi citra, Nias Utara

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Coral reef monitoring in Panjang Island, Central Bangka

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/926/1/012099 ◽

2021 ◽

Vol 926 (1) ◽

pp. 012099

Author(s):

W Adi ◽

I Akhrianti ◽

M Hudatwi

Keyword(s):

Remote Sensing ◽

Coral Reef ◽

Coral Reefs ◽

Satellite Imagery ◽

Good Condition ◽

Aerial Photographs ◽

Visual Interpretation ◽

Composite Band ◽

Sentinel 2A ◽

Color Composite

Abstract Bangka Island is the largest tin producer in Indonesia and since the granting of tin mining freedom in 2000, unconventional tin mining (TI) is increasingly prevalent. The existence of mining activities will directly or indirectly damage the environment both on land and at sea. Especially the high biodiversity of coral reef ecosystem. The purpose of this research was to analyze a map of the distribution of coral reef based on Sentinel 2A satellite imagery data. Analyze the extent of the coral reefs in shallow waters of Putri Island, and analyze of the condition coral reefs (percentage cover, mortality index and genus diversity) with using collaboration betwen the coral diving data and remote sensing data. Studies of changes in coral reef ecosystems have been ongoing since several decades ago. The combination of satellite imagery and aerial photographs is capable of making long-term and continuous observations on mapping and change detection. Remote sensing technology has several advantages overconventional sampling to monitor a large area in time almost simultaneously and continuously including the difficult to explore areas. This research was conducted with visual interpretation by using standard true color composite band (483) and false color composite band (843) of Sentinel 2A and also using lyzenga transformation. Estimation of coral reefs area based on result is 475,96 ha (2016) and decreased to 475 ha (2021). The condition of coral reefs at the research location is a good condition.

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Assessment of Coral Reef Life-Form Classification Scheme using Multiresolution Images on Parang Island, Indonesia

Geosfera Indonesia ◽

10.19184/geosi.v6i3.27592 ◽

2021 ◽

Vol 6 (3) ◽

pp. 377

Author(s):

Wahyu Lazuardi ◽

Pramaditya Wicaksono

Keyword(s):

Coral Reef ◽

Life Form ◽

Classification Scheme ◽

Spatial Information ◽

Satellite Image ◽

Creative Commons ◽

Central Java ◽

Object Based ◽

Efficient Data ◽

Sentinel 2A

Spatial information on the varying composition of coral reefs is beneficial for the management and preservation of natural resources in coastal areas. Its availability is inseparable from environmental management goals; however, it can also be used as a means of supporting tourism activities and predicting the emergence of certain living species. A satellite image is one of the effective and efficient data sources that provide spatial information on coral reef variations. This study aimed to evaluate the classification scheme of coral reef life-form using images with different spatial resolutions on Parang Island, Karimunjawa Islands, Central Java. These images were from PlanetScope (3m), PlanetScope resampling (6m), and Sentinel-2A MSI (10m), whose spatial resolutions functioned as the base for building the 3m, 6m, and 10m classification schemes producing 12, 11, and 9 classes, respectively. As for the classification method, it integrated both object-based and pixel-based approaches. The results showed that the highest overall accuracy (60%) was obtained using Sentinel-2A MSI image (10m), followed by PlanetScope (3m) with 48% accuracy, and PlanetScope resampling (6m) with 40% accuracy. This finding indicates that multiresolution images can be used to produce complex coral reef life-form maps with different levels of information details. Keywords: Coral reef; Life-form; Planetscope; Spatial resolution; Classification scheme Copyright (c) 2021 Geosfera Indonesia and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License

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POLA DINAMIS PENURUNAN HASIL TANGKAPAN UDANG AKIBAT PENGENDAPAN DAN LIMBAH INDUSTRI DI KAWASAN SEGARA ANAKAN (Dynamic Pattern of Degradation of Shrimps Catch as an Effect of Sedimentation and Industrial Waste in Segara Anakan)

Marine Fisheries Journal of Marine Fisheries Technology and Management ◽

10.29244/jmf.7.2.125-136 ◽

2016 ◽

Vol 7 (2) ◽

pp. 125

Author(s):

. Mustaruddin ◽

Domu Simbolon ◽

Mohammad Khotib

Keyword(s):

Dynamic Model ◽

Industrial Waste ◽

Sediment Accumulation ◽

Total Suspended Solid ◽

Suspended Solid ◽

Fishing Ground ◽

Central Java ◽

And Performance ◽

Descriptive Method ◽

Model Approach

AbstractSegara Anakan, Cilacap Regency is an important marine fisheries producer in Central Java Province, especially for shrimps. The objective of this study were to analyze the production and fishing ground of shrimps, to analyze dynamic patterns of shrimps cat ch affected by sedimentation and industrial waste in Segara Anakan, and to develop intervention option to the degradation of shrimp catch as well. Some methods were used in this study such as descriptive method, geographic information system, and dynamic model approach included the test of model structural stability and performance. In 2002–2013, the highest production of shrimps in the Segara Anakan was in 2006 (2263.0 ton) and the lowest was in 2010 (884.7 ton). Fishing ground of shrimp in the Segara Anakan already had high total suspended solid, and also low contaminated oil and lead (Pb). Results of dynamic model analysis showed that shrimp catch degraded exponentially along with the increasing of sediment accumulation and industrial waste. Shrimps production in 2013 was 1147.8 tons, and might decrease 43.04 % to be 653.8 tons over 75 years later without intervention. If the model was intervenced by fishing open -close system and limited acces fishing ground, hence shrimps catch showing stable around 902.2–929.1 ton every year. While if the intervention was conducted by the stopping of industrial waste to Segara Anakan, hence shrimps catch only decrease 13.00 % to be 998.6 tons over 75 years later. Keywords: dynamic model, fishing ground, industrial waste, shrimp catch AbstrakABSTRAK Segara Anakan, Kabupaten Cilacap merupakan basis produksi perikanan laut yang penting di Provinsi Jawa Tengah terutama jenis udang. Penelitian ini bertujuan menganalisis kondisi produksi dan daerah penangkapan udang, menganalisis pola dinamis penurunan hasil tangkapan udang akibat pengaruh pengendapan dan pembuangan limbah industri di kawasan Segara Anakan, serta mengembangkan alternatif intervensi secara modelling terhadap penurunan tersebut. Metode yang digunakan terdiri dari metode deskriptif, sistem informasi geografi, pendekatan model dinamis, serta uji kestabilan struktur dan kinerja model. Pada periode tahun 2002 – 2013, produksi tertinggi udang terjadi pada tahun 2006 (2263,0 ton) dan terendah terjadi pada tahun 2010 (884,7 ton). Daerah penangkapan udang di kawasan Segara Anakan mempunyai total padatan tersuspensi dan kekeruhan yang tinggi, serta tercemar ring an oleh minyak dan logam timbal. Analisis model dinamis menunjukkan bahwa hasil tangkapan udang cenderung menurun secara eksponensial seiring meningkatnya akumulasi endapan dan cemaran limbah industri dari waktu ke waktu. Hasil tangkapan udang yang saat ini (tahun 2013) mencapai 1147,8 ton, bisa menurun 43,04 % menjadi 653,8 ton setelah 75 tahun kemudian. Bila model tersebut diintervensi dalam bentuk penerapan sistem open-close dan pembatasan daerah penangkapan yang bisa diakses, maka hasil tangkapan udang cenderung stabil pada kisaran angka 902,2 – 929,1 ton setiap tahunnya. Akan tetapi bila intervensi dilakukan dalam bentuk penghentian pembuangan limbah industri ke kawasan Segara Anakan dan sekitarnya, maka hasil tangkapan udang hanya turun 13,00 % (menjadi 998,6 ton) setelah 75 tahun kemudian. Kata kunci: model dinamis, daerah penangkapan, limbah industri, hasil tangkapan udang

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The Stakeholder Analysis for Fisheries Management

SHS Web of Conferences ◽

10.1051/shsconf/20208601020 ◽

2020 ◽

Vol 86 ◽

pp. 01020

Author(s):

Suharno ◽

Agus Arifin ◽

Ary Yunanto

Keyword(s):

Fisheries Management ◽

Stakeholder Analysis ◽

Fishing Ground ◽

Institutional Management ◽

Stakeholder Groups ◽

Fisheries Resources ◽

Central Java ◽

South Sea ◽

The Common ◽

Ownership Rights

The south sea of Central Java as a fishing ground for south coast fishers makes its resources common-pool resources, and the utilization of ownership rights becomes unclear. As a result, fisheries resources experience excessive utilization, which indicates the phenomenon of the tragedy of the common. Based on these conditions, appropriate rules and policies are needed in the institutional management of fisheries resources to remain sustainable. The purpose of this study is: to identify the roles of stakeholders in fisheries management. The analysis used is stakeholder analysis. The results of the study show that: Stakeholder groups involved in fisheries management are subjects, bystanders, actors, and players.

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Comparing several pixel-based classification methods for vegetation structural composition mapping using Sentinel 2A imagery in Salatiga area, Central Java

10.1117/12.2621965 ◽

2021 ◽

Author(s):

Haeydar Anggara Hadi ◽

Projo Danoedoro

Keyword(s):

Classification Methods ◽

Structural Composition ◽

Central Java ◽

Sentinel 2A

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Perbandingan Jenis dan Jumlah Echinodermata Di Perairan Pantai Krakal Gunung Kidul Yogyakarta Dan Pantai Pailus Jepara, Jawa Tengah

Journal of Marine Research ◽

10.14710/jmr.v8i2.25090 ◽

2019 ◽

Vol 8 (2) ◽

pp. 127-140

Author(s):

Ardita Elok Mahendra Putri ◽

Sunaryo Sunaryo ◽

Hadi Endrawati

Keyword(s):

Water Quality ◽

Coral Reefs ◽

Food Chain ◽

Organic Material ◽

Marine Ecosystems ◽

Quality Parameters ◽

Holothuria Scabra ◽

Central Java ◽

Holothuria Atra ◽

Descriptive Method

Echinodermata merupakan biota yang dapat ditemukan hampir di semua ekosistem laut. Echinodermata cukup melimpah keberadaannya di kawasan terumbu karang, hal ini karena terumbu karang berperan sebagai tempat berlindung dan mencari makan bagi Echinodermata. Dalam rantai makanan, Echinodermata memiliki peranan sebagai pemakan seston atau detritus, dan merombak sisa bahan organik. Echinodermata juga berperan sebagai bioindikator parameter kualitas perairan. Penelitian ini bertujuan untuk mengetahui kelimpahan Echinodermata yang terdapat di Pantai Krakal, Gunung Kidul, Yogyakarta dan Pantai Pailus, Jepara, Jawa Tengah. Metode yang digunakan dalam penelitian ini yaitu metode deskriptif. Pengambilan sampel pada penelitian ini menggunakan metode transek kuadran dengan ukuran 1x1m. Hasil pengamatan di Pantai Krakal ditemukan 2 kelas dari filum Echinodermata, antara lain 3 species dari Kelas Ophiuroidea yaitu Ophiocoma erinaceus, Ophiocoma scolopendrina, Ophiarachna affinis, dan 3 species dari Kelas Echinoidea yaitu Echinometra viridis, Echinometra oblonga, dan Stomopneustes variolaris. Sedangkan jenis Echinodermata yang ditemukan di Pantai Pailus ditemukan 1 Kelas Echinodermata yaitu Holothuridea yang terdiri dari 3 spesies, yaitu Holothuria atra, Holothuria scabra, dan Holothuria leucospilota. Hasil penelitian menunjukkan kelimpahan individu tertinggi penelitian di Pantai Krakal adalah Ophiocoma scolopendrina (7,05 ind/m²),sedangkan kelimpahan individu tertinggi di Pantai Pailus adalah Holothuria scabra (2,13 ind/m²). Echinodermata is a biota that can be found almost in all marine ecosystems. Echinodermata quite abundant presence in the area coral reefs, because it serves as shelter and feed for Echinodermata. In the food chain, Echinodermata has a role as a seston eater or dentrite, and remodel the rest of the organic material. Echinodermata also serves as a bioindicator of water quality parameters. This study aims to determine the abundance of Echinodermata found in Krakal Beach, Gunung Kidul, Yogyakarta and Pailus Beach, Jepara, Central Java. The method used in this research was descriptive method. Sampling in this research used quadrant transect method with size 1x1m. The results of observation on Krakal Beach found 2 classes of Echinodermata phylum, among others 3 species of Ophiuroidea namely Ophiocoma erinaceus, Ophiocoma scolopendrina, Ophiarachna affinis, and 3 species of Echinoidea is Echinometra viridis, Echinometra oblonga, and Stomopneustes variolaris. While the type of Echinodermata found in Pailus Beach found 1 Class Echinodermata is Holothuridea consisting of 3 species, namely Holothuria atra, Holothuria scabra, and Holothuria leucospilota. The results showed the highest individual abundance of research on Krakal Beach was Ophiocoma scolopendrina (7,05 ind/m²), while the highest individual abundance in Pailus Beach was Holothuria scabra (2,13 ind/m²).

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PEMETAAN POTENSI PEMUTIHAN KARANG DI PERAIRAN INDONESIA MENGGUNAKAN ANALISIS DATA SUHU PERMUKAAN LAUT

Prosiding SNFA (Seminar Nasional Fisika dan Aplikasinya) ◽

10.20961/prosidingsnfa.v3i0.28512 ◽

2019 ◽

Vol 3 ◽

pp. 65

Author(s):

Dany Pangestu ◽

Ratih Suci Ramadhanti ◽

Ahmad Fadlan

Keyword(s):

Coral Reefs ◽

Coral Bleaching ◽

Economic Value ◽

Sea Surface ◽

Northwest Coast ◽

Northern Coast ◽

Coral Triangle ◽

Central Java ◽

Natural Factors ◽

Anomaly Analysis

Abstract: Indonesia is the country that contributed the largest coral reefs, about 18% total of the entire the world. Area of coral reef in Indonesia known as the “Coral Triangle”. This ecosystem has high ecology and economic value. The existence of the coral reefs is the main attraction for a tourism destination. However, the function and role of these ecosystems are decreasing due to natural factors and artificial factors. One of the natural factors is due to the influence of global warmings, such as sea surface temperature (SST), causing damage and coral death, known as coral bleaching. The purpose of this study was to identify the potential for coral bleaching in Indonesian waters using SPL anomaly analysis obtained from monthly AVHRR POES in the morning and night. This research used hotspots data (HS) by calculating the average of data anomaly difference with a maximum monthly average data during 10 years (2006 - 2017). The results obtained show that areas that have the potential to become coral bleaching in Indonesian waters are quite varied. In general, it covers the northern coast of Banten, DKI Jakarta, West Java, Central Java, East Java, the northwest coast of Lampung, Pekanbaru, and Riau, the northwest coast of Papua Island, and North Natuna waters. The results also showed that sea surface temperatures in Indonesian waters were quite influential on coral bleaching.Abstrak: Indonesia merupakan negara penyumbang terumbu karang terbesar yaitu 18% dari total dunia. Wilayah terumbu karang di Indonesia dikenal dengan wilayah “Coral Triangle”. Ekosistem ini memiliki nilai ekologis dan ekonomis yang tinggi. Keberadaanya merupakan daya tarik tersendiri untuk dijadikan lokasi wisata. Namun, fungsi dan peranan ekosistem ini menurun akibat faktor alam dan faktor buatan. Salah satu faktor alamnya diakibatkan pengaruh pemanasan global yaitu naiknya suhu permukaan laut (SPL) sehingga menyebabkan kerusakan dan kematian karang atau dikenal sebagai pemutihan karang. Tujuan penelitian ini adalah mengidentifikasi potensi terjadi pemutihan karang di wilayah perairan Indonesia menggunakan analisis anomali SPLyang diperoleh dari POES AVHRR pagi dan malam bulanan. Metode yang diugunakan mencari data hotspot (HS) dengan melakukan perhitungan rata rata selisih data anomali dengan data rata rata maksimum bulanan selama 10 tahun (2006 - 2017). Hasil yang didapat menunjukkan bahwa wilayah yang berpotensi menjadi pemutihan karang di perairan Indonesia cukup beravariasi. Secara umum meliputi meliputi pesisir utara dari Provinsi Banten, DKI Jakarta, Jawa Barat, Jawa Tengah, Jawa Timur, pesisir barat laut Lampung ,Pekanbaru dan Riau, pesisir barat laut dari Pulau Papua, dan perairan Natuna Utara. Hasil penelitian juga menunjukkan bahwa suhu permukaan laut di perairan Indonesia cukup mempengaruhi pemutihan karang.

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MANFAAT LANGSUNG TERUMBU KARANG DI DESA TUMBAK KABUPATEN MINAHASA TENGGARA

JURNAL PERIKANAN DAN KELAUTAN TROPIS ◽

10.35800/jpkt.8.2.2012.409 ◽

2012 ◽

Vol 8 (2) ◽

pp. 58

Author(s):

Ingrid Sembiring ◽

Adnan Sj Wantasen ◽

Edwin LA Ngangi

Keyword(s):

Coral Reef ◽

Coral Reefs ◽

Building Materials ◽

Low Cost ◽

Construction Materials ◽

Fishing Ground ◽

Residential Areas ◽

Direct Benefit ◽

Direct Benefits ◽

Coral Reef Ecosystems

Penangkapan ikan yang destruktif (menggunakan bom dan racun) dan pengambilan karang untuk dijadikan fondasi rumah menjadi isu dalam pengelolaan pesisir di Desa Tumbak. Tujuan penelitian ini adalah (1) Mengetahui nilai manfaat langsung terumbu karang sebagai tempat penangkapan ikan oleh masyarakat di Desa Tumbak; (2) Mengetahui nilai manfaat langsung terumbu karang sebagai bahan bangunan oleh masyarakat di Desa Tumbak; (3) Mengetahui total nilai pemanfaatan terumbu karang sebagai tempat penangkapan ikan dan sebagai bahan bangunan oleh masyarakat di Desa Tumbak. Nilai manfaat langsung terumbu karang untuk fondasi rumah diperoleh Rp6.177.600 per tahun dan nilai manfaat langsung terumbu karang untuk penangkapan ikan karang Rp4.860.000.000. Total nilai manfaat langsung dari kedua pemanfaatan ini yaitu: Rp4.866.177.600. Total nilai ini belum termasuk pemanfaatan dalam bentuk lain terhadap ekosistem terumbu karang. Pemanfaatan terumbu karang sebagai bahan bangunan terutama disebabkan oleh faktor biaya yang murah dan jarak yang dekat dengan pemukiman. Praktik pemanfaatan yang tidak berkelanjutan ini menyebabkan degradasi kondisi terumbu karang sehingga tutupan karang hidup berada dalam kategori rusak (sedang). Jika terjadi terus-menerus, hal ini dapat menghilangkan fungsi ekologis sebagai peredam ombak dan fungsi ekonomis sebagai sumber pangan. Kata kunci: Tumbak; nilai manfaat langsung; terumbu karang; ekosistem The issues of destructive fishing practices (using of bombs and poisons) and the use of corals as construction building materials have become issues in coastal management in Tumbak Village. The aims of this study are (1) to find out the value of the direct benefits of coral reefs as fishing ground to the communities in Tumbak village, (2) to find out the value of the direct benefits of coral reefs as building materials to the communities in Tumbak village; (3) to find out the total value of the use of coral reefs as a fishing ground and as a construction materials for to the communities in Tumbak village. The value of direct benefit of the coral reef for building foundation was Rp 6,177,600 per year and the value of direct benefits for fishing was Rp 4,860,000,000. Total value of direct benefits from both of these uses was Rp 4,866,177,600. Total value did not include the use of other forms of coral reef ecosystems. In conclusions, the use of coral reefs as a building materials were mainly due to the low cost and the proximity to residential areas. Such category unsustainable practice has led to the degradation of coral reefs down to damaged category (medium category). If this happened continuously, the ecological function as wave protectors and economic functions as a source of food could be eliminated. Keywords: Tumbak; direct benefit value; coral reefs; ecosystem.

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ASPEK BIOLOGI UDANG BERAS MERAH (Metapenaeopsis barbata) di PERAIRAN UTARA KABUPATEN BATANG DAN PEMALANG, JAWA TENGAH (Biological Aspect of Whiskered Velvet Shrimp (Metapenaeopsis barbata) in North of Batang and Pemalang Disctrict Seas)

Management of Aquatic Resources Journal (MAQUARES) ◽

10.14710/marj.v6i4.21347 ◽

2018 ◽

Vol 6 (4) ◽

pp. 546-554

Author(s):

Adnan Lintang Hanggoro ◽

Anhar Solichin ◽

Suradi Wijaya Saputra

Keyword(s):

Random Sampling ◽

Mesh Size ◽

Fishing Ground ◽

North Coast ◽

Fishing Gear ◽

Red Rice ◽

Systematic Random Sampling ◽

Total Length ◽

The North ◽

Central Java

Kegiatan penangkapan ikan di Pantai utara Provinsi Jawa Tengah yang terus meningkat dan penggunaan alat tangkap yang tidak selektif oleh nelayan akan mempengaruhi jumlah stok udang di perairan. Tujuan penelitian ini adalah untuk mengkaji dan membandingkan aspek-aspek biologi Udang Beras Merah (Metapenaeopsis barbata) yang meliputi aspek pertumbuhan dan reproduksi menurut perbedaan waktu pengambilan sampel (temporal) dan perbedaan perairan daerah penangkapan (spasial). Penelitian dilaksanakan pada bulan Februari – April 2017 di Kabupaten Batang dan Pemalang. Metode yang digunakan dalam pengambilan sampel menggunakan systematic random sampling. Hasil sampling yang dilakukan di Kabupaten Batang dan Pemalang menunjukkan panjang total udang M. barbata yang tertangkap berkisar pada ukuran 40 – 106 mm dan 52 – 118 mm. Pola pertumbuhan M. barbata yang tertangkap di Kabupaten Batang bersifat allometrik negatif, sedangkan udang yang didaratkan di Kabupaten Pemalang bersifat allometrik positif. Nilai faktor kondisi pada udang M. barbata yang didaratkan di Kabupaten Batang dan Pemalang selama penelitian adalah 1,908 dan 1, 584. Ukuran udang M. barbata yang pertama kali tertangkap di Kabupaten Batang dan Pemalang adalah 63 mm dan 88 mm. Rasio perbandingan nisbah kelamin Udang M. barbata jantan dan betina yang tertangkap selama penelitian sebesar 1 : 2,11. Udang M. barbata yang didaratkan di Kabupaten Pemalang pertama kali mengalami matang gonad pada ukuran panjang total 94,2 mm. Upaya untuk mempertahankan tersedianya stok spesies M. Barbata adalah dengan mengatur intensitas eksploitasi sumberdayanya dan ukuran mata jaring alat tangkap arad agar diperbesar menjadi ukuran 1,75 inchi. Pendataan jumlah produksi dan trip alat tangkap udang M. barbata penting untuk dilakukan, dengan tujuan pemerintah daerah tetap bisa memantau intensitas eksploitasi yang dilakukan nelayan. Fishing activities on the North Coast of Central Java Province are increasing and the using of fishing gear which is not selective by fishermen will affect the amount of shrimp stock in the waters. The purpose of this research was to examine and compare the biological aspects of Whiskered Velvet Shrimp (M. barbata) which are growth and reproduction aspects according to differences in timing of sampling (temporal) and different fishing ground (spatial). The research was conducted on February to April 2017 in Batang and Pemalang districts. The method used systematic random sampling. The results of the sampling carried out in Batang and Pemalang shows the total length caught M. barbata range in size of 40-106 mm and 52-118 mm. The growth pattern M. barbata caught in Batang is allometric negative, while the shrimp landed in Pemalang are positive allometric. The value of the condition factor on M. barbata landed in Batang and Pemalang District during the study was 1.1688 and 1.0618. The average size of M. barbata first caught in Batang and Pemalang District is 63 mm and 88 mm. The ratio of sex ratio of male and female M. barbata caught during the study was 1: 2,11. Red Rice Prawns are landed in Pemalang District first experience mature gonads at a total length of 94.2 mm. The effort to maintain the availability of stock of the species M. barbata is to adjust the intensity of exploitation of resources and setting the mesh size of fishing gear in order arad (small bottom trawl) enlarged to a size of 1.75 inches. Documenting the amount of production and the number of trips M. barbata fishing tools necessary to do, with the aim is the local government can still monitor the intensity of exploitation of fishermen.

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