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All Journal JURNAL HUTAN LESTARI Journal of Tropical Biodiversity and Biotechnology JURNAL ENGGANO ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua
Ana Ariasari
Marine Science Study Program, Faculty of Agriculture, Bengkulu University. Jl. W.R. Supratman, Kandang Limun, 38371, Bengkulu, Indonesia.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology Other

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Food Preference of Bullet Tuna (Auxis rochei Risso, 1810) in Prigi Coast of Trenggalek Regency, East Java Bella Pradita Agustina; Ana Ariasari; Tony Budi Satriyo; Eko Setyobudi
Journal of Tropical Biodiversity and Biotechnology Vol 8, No 1 (2023): April
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtbb.72939

Abstract

As a commercial fish, bullet tuna is constantly caught in purse seine fisheries to provide economic benefits for coastal communities. Biological information such as food preference has to be known due to their sustainability in the future. This research aims to figure out the food composition and preference of bullet tuna (Auxis rochei Risso, 1810) in Prigi Coast, Trenggalek Regency East Java. A total of 294 fish landed by purse seine fishermen have been collected from March up to May 2018. Each individual was measured in its total length and weight, then was dissected for sex determination,  measured the length of intestine, and analyse the stomach content. The data analysis encompasses frequency distribution of total length, relative gut length, frequency of occurrence, index of preponderance, trophic level, niche breadth, and food overlapping. The research result indicates that the main foods of Auxis rochei are fish and crustacean, while the complementary and additional foods were copepod, mollusc, annelid, and debris. Bullet tuna was a carnivorous fish with the trophic level of 3.7 and shows the existence of competition for food resources. Overlapping of feeding occurred in the 19-20 cm long group against the 23-24 cm long group in male fish and the 19-20 cm size group against the 21-22 cm length group in female fish. Bullet tuna use the same feed resources among the size groups of fish, where females use feed over a wider area than males. 
Karakteristik Habitat Bentik Perairan Dangkal Di Pesisir Labuan Bajo, Nusa Tenggara Timur Ana Ariasari; Miftakhul Munir; Nur Lina Maratana Nabiu Nabiu; Ayub Sugara; Ari Anggoro; Deddy Bakhtiar
JURNAL ENGGANO Vol. 8 No. 1 (2023)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.8.1.18-26

Abstract

Labuan Bajo merupakan salah satu destinasi pariwisata dunia yang memiliki keindahan alam pesisir dan laut, salah satunya habitat bentik sebagai habitat dasar pesisir perairan dangkal. Pembangunan pesisir Labuan Bajo sebagai destinasi pariwisata akan memberikan dampak pada kualitas lingkungan pesisir sehingga dapat mengancam keberlanjutan habitat bentik dalam jangka panjang. Penelitian ini bertujuan untuk menginventarisasi karakteristik habitat bentik yang ditemukan di sepanjang pesisir Labuan Bajo. Penelitian ini menggunakan metode survei yang dilakukan pada Bulan April-Mei 2019 di seluruh pesisir Labuan Bajo. Sampel habitat bentik dikoleksi menggunakan metode Underwater Photo Transect yang diambil di atas tutupan habitat bentik berdasarkan variasi tutupan habitat bentik. Sebanyak 258 foto dianalisis menggunakan software CPCe untuk menurunkan kelas makro habitat bentik, yaitu terumbu karang, padang lamun, makroalga, dan substrat. Jenis terumbu karang yang ditemukan di Labuan Bajo terdiri dari branching, tabular, massive, staghorn, soft coral, pillar, foliage, digitate, encrusting, dead coral. Tipe padang lamun terdiri dari Enhalus acaroides, Thalasia hemprichii, Thalasodendron ciliatum, Cymodocea rotundata, Halodule uninervis, Halophila ovalis, dan Syringodium isoetifolium. Tipe makroalga yang ditemukan terdiri dari Padina sp. and Turbinaria sp. Tipe substrat Labuan Bajo terdiri dari pasir dan pecahan karang. Tutupan makroalga paling jarang dijumpai di pesisir Labuan Bajo. Tutupan padang lamun dan substrat mendominasi tutupan habitat bentik dengan persentase 35,96% dan 32,54%. Jenis habitat bentik lain seperti tutupan terumbu karang dan makroalga masing-masing hanya sebesar 24,32% dan 7,13%.
Struktur Komunitas Bentik di Area Terumbu Karang Buatan Pulau Karya, Kepulauan Seribu An Nisa Nurul Suci; Ahmad Taufik Ghozali; Firdha Iresta Wardani; Ana Ariasari; Nella Tri Agustini; Nur Lina Maratana Nabiu; Akbar Abdurrahman Mahfudz; Muamar Mujab; Akhmad Adib; Neni Meirawati; Maretha Dwi Villany
ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Vol 6 No 1 (2023): ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua
Publisher : Cenderawasih University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/acr.v6i1.2990

Abstract

Coral reef conservation can be conducted by creating artificial coral reefs as was done on Karya Island. Monitoring and evaluation afterwards is needed. This study aims to determine the benthic community structure in the concrete module area, Karya Island artificial reef after 15 years of coral transplantation. Data collection was carried out using the photo transect method on line transects (50 m) in 3 stations. The transect images taken were then processed using CPCe. The condition of the coral reefs at the study site was in the bad category with a percentage of live hard coral cover of 13.39 ± 4.62%. The highest to lowest percent cover respectively were DCA (51.67 ± 6.60%), SP (15.50 ± 7.93%), FS (14.72 ± 5.98%), HC ( 13.39 ± 4.62%), SC (4.05 ± 2.76%), and OT (0.67 ± 0.35%). Benthic community diversity in St. 1 (H'=1.59) and St. 3 (H'=1.52) is moderate, while St.2 has low diversity (H'=0.84). The benthic community at St.1 and St.3 is classified as stable with a uniformity value of 0.72 and 0.78 respectively. However, St.2 has an unstable community (E=0.40). Dominance appears in St. 2 (C=0.66) due to high abundance of Padina sp. is much higher than other species.
PEMETAAN TUTUPAN LAHAN SEBAGIAN WILAYAH KABUPATEN KULONPROGO MENGGUNAKAN CITRA RESOLUSI SPASIAL TINGGI DENGAN PENDEKATAN OBIA (OBJECT BASED IMAGE ANALYSIS) Erisa ayu waspadi putri; Siti Puji Lestariningsih; Ana Ariasari; Endi Ramadhani
JURNAL HUTAN LESTARI Vol 11, No 2 (2023): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v11i2.61331

Abstract

The importance of land cover information in various planning circumstances results in high demand for such up-to-date information continuously. Remote sensing is a time and cost-effective technology that could provide such information. Remote sensing can be employed to derive numerous information from a distance without requiring direct contact with the object. The remote sensing data analysis simply demands field verification to produce scientifically admissible land cover maps. In the process, the analysis can be done with visual as well as digital analysis. In terms of digital analysis, the OBIA (Object-Based Image Analysis) technique could be deployed to synthesize land cover information in the form of maps. OBIA is a digital interpretation technique consisting of two processes named segmentation and classification which require a dominant role of interpreter. The study aims is apply OBIA in Pleiades imagery to produce land cover maps in parts of the Kulonprogo region. The accuracy of the produced map then be evaluated using the confusion matrix method and Kappa Index. The analysis reveals that OBIA is adequate in terms of providing accurate land cover maps using high spatial remote sensing imagery. The Overall accuracy and Kappa Index values of the resulting map reached 91.07% and 0.92. The results exhibit that the technique applied has a high level of confidence and could be scientifically accepted.Keywords: Accuracy Assessments, Land cover, OBIA, Pleiades.AbstrakPentingnya informasi tutupan lahan dalam berbagai bidang perencanaan mengakibatkan tingginya kebutuhan dan keterbaharuan informasi tersebut secara berkelanjutan. Penginderaan jauh merupakan salah satu teknologi yang dapat digunakan untuk menyediakan informasi tutupan lahan secara time and cost effective. Penginderaan jauh dapat digunakan untuk menderivasi berbagai informasi tanpa harus ada kontak langsung dengan objek tersebut. Analisa data penginderaan jauh hanya memerlukan verifikasi lapangan untuk menghasilkan peta tutupan lahan yang dapat dipertanggungjawabkan secara ilmiah. Pada prosesnya, analisa tersebut dapat dilakukan dengan berbagai macam teknik; baik secara digital maupun visual. Secara digital, derivasi informasi tutupan lahan dapat dilakukan dengan teknik OBIA (Object Based Image Analysis). OBIA merupakan teknik interpretasi digital yang terdiri atas segmentasi dan klasifikasi dimana dalam prosesnya, memerlukan peran interpreter yang cukup dominan.  Penelitian ini bertujuan untuk memetakan tutupan lahan pada sebagian wilayah Kulonprogo menggunakan citra Pleiades dengan teknik OBIA. Terhadap peta hasil analisis OBIA, dilakukan perhitungan akurasi dengan metode confusion matrix dan perhitungan Kappa Index untuk mengetahui akurasi dari penerapan OBIA pada citra Pleiades. Berdasarkan analisa dan perhitungan yang dilakukan, diketahui bahwa OBIA mampu memberikan hasil yang akurat untuk interpretasi informasi tutupan lahan menggunakan citra penginderaan jauh resolusi spasial tinggi. Nilai overall accuracy dan Kappa Index yang mencapai 91.07% dan 0.92 menunjukkan bahwa hasil analisis tersebut memiliki tingkat konfidensi yang tinggi dan dapat diterima juga dipertanggungjawabkan secara ilmiah. Kata kunci: Uji Akurasi, Tutupan Lahan, OBIA, Pleiades
Co-Authors Ahmad Taufik Ghozali Akbar Abdurrahman Mahfudz Akhmad Adib An Nisa Nurul Suci Ari Anggoro Ayub Sugara Bella Pradita Agustina Deddy Bakhtiar Eko Setyobudi Endi Ramadhani Erisa ayu waspadi putri Firdha Iresta Wardani Maretha Dwi Villany Miftakhul Munir Muamar Mujab Nella Tri Agustini Neni Meirawati Nur Lina Maratana Nabiu Siti Puji Lestariningsih Tony Budi Satriyo