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All Journal Jurnal Ilmu Pertanian Indonesia Journal of Marine and Aquatic Sciences Jurnal Biologi Udayana Bumi Lestari Ecotrophic, Journal of Environmental Science Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) Current Trends in Aquatic Science Jurnal Perikanan
Made Ayu Pratiwi
Program Studi Manajemen Sumberdaya Perairan (Department Of Aquatic Resources Management) Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science Other

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Keanekaragaman dan Asosiasi Antarspesies Lamun di Perairan Pantai Samuh, Nusa Dua, Bali Ayu Padma Sari; Nyoman Dati Pertami; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 5 No 1 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Seagrass are flowering plants which have rhizomes, leaves and true roots. Most types of seagrass in Indonesia are found in Bali. One of the distributions of seagrass in Bali is Samuh Beach. This study aimed to determine the diversity of seagrass and association patterns between seagrass in Samuh Beach. This research conducted on January-February 2021. There were three observation stations, namely station I (fishing boat landing sites), station II (tourist activities), and station III (hotel area locations). The method used in this research was descriptive method Observation of seagrass samples using a 50×50 cm quadratic transect. Data analysis was carried out by calculating density, cover percentage, diversity index, uniformity index, dominance index, and associations between seagrass species. There were eight types of seagrass in Samuh Beach (Enhalus acoroides, Cymodocea rotundata, Cymodocea serrulata, Halodule pinifolia, Halodule uninervis, Halophila ovalis, Syringodium isoetifolium, and Thalassodendron ciliatum). The diversity of seagrass in Samuh Beach from observations at stations I and II in balanced conditions with a value of 1.42 and 1.52. Station III was a low category (0.79). There were 14 association pairs species of seagrass in Samuh Beach. The 12 association pairs were not related and 2 association pairs were related at the 5% level, (3.48, ?2 count> ?2 table). The related association pairs have positive association types, namely Syringodium isoetifolium with Halophila ovalis and negative associations, and Syringodium isoetifolium with Halodule pinifolia.
Pertumbuhan Ikan Tongkol Abu-Abu (Thunnus tonggol Bleeker, 1851) yang Tertangkap di Perairan Selat Bali Made Ayu Pratiwi; Gde Raka Angga Kartika
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p03

Abstract

Longtail Tuna (Thunnus tonggol) in the waters of the Bali Strait is a by-catch fish, so that information on this fish resource was still very lacking and its management of longtail tuna was often neglected. The aimed of this study is to predict the signs of the unsustainability of longtail tuna resources based on growth aspects which include the distribution of length frequency, estimation of age groups, growth patterns and growth parameters. Data collection was carried out from December 2018 to February 2019. The growth pattern estimated by relationship of length and weight, cohort was identified using an analytical model based on the FISAT program (FAO I-CLARM Stock Assessment Tools) and growth parameters were analyzed using the Von Bertalanffy growth model. It can be seen that, the catch is dominated by the size of the fish that have matured gonads or adults (69% females and 73% males). The growth pattern of female and male of longtail tuna is negative allometric (length growth is more dominant than weight). So it can be assumed that there is an inconvenience in environmental conditions and competition in fighting for food and space in the waters of the Bali Strait.Longtail tuna had asymptotic length values of 784.71 mm (female) and 738.04 mm (male) with growth coefficients of 0.13 (female) and 0.18 (male). The growth performance inteprated as quite high when compared to other waters in Indonesia.
Pertumbuhan Ikan Tongkol Lisong (Auxis rochei Risso, 1810) di Perairan Kedonganan, Bali Ghina Nafis Rahmatullah; Nyoman Dati Pertami; Made Ayu Pratiwi
Current Trends in Aquatic Science Vol 5 No 2 (2022)
Publisher : Program Studi Manajemen Sumberdaya Perairan, Fakultas Kelautan dan Perikanan, Universitas Udayana

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Abstract

Bullet tuna (Auxis rochei) is a type of pelagic fish that has important economic value and is a source of livelihood for fishermen in the waters of Kedonganan, Badung, Bali. This study aims to determine the growth of bullet tuna (Auxis rochei) by analyzing the length frequency distribution, growth patterns, condition factors, age groups, and growth parameters. Sampling of bullet tuna was carried out from January to March 2021, as many as 6 times sampling with a span of once every 14 days. The total samples of bullet tuna obtained were 638 individuals. The distribution of the length distribution of bullet tuna is between 268-376 mm. The results showed that the growth pattern of male and female bullet tuna was negative allometric which indicated that the fish's length increased faster than its weight gain. The condition of bullet tuna in Kedonganan waters based on the results of the study showed that bullet tuna were in a less good condition. The value of the condition factor of the female bullet tuna decreased from January to March, while the condition factor of the male bullet tuna decreased only in February. There was a shift in the age group from observations 1 to 5 in the age group to the right, in contrast to observations from 5 to 6 there was no shift in age groups. The growth coefficient (K) of bullet tuna is 0.57 per year, where the asymptotic length is 387.07 mm and the theoretical age of fish at length 0 is -0.854. Based on the parameters of the growth coefficient, it can be seen that the annual growth of bullet tuna in Kedonganan waters is not fast and not large.
Analisis Kesesuaian Wisata dan Kesediaan untuk Membayar Kategori Wisata Rekreasi di Pantai Samuh, Bali Angel Maria Arief; Nyoman Dati Pertami; Made Ayu Pratiwi
Journal of Marine and Aquatic Sciences Vol 8 No 2 (2022)
Publisher : Fakultas Kelautan dan Perikanan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/jmas.2022.v08.i02.p13

Abstract

This study aimed to determine the tourism suitability index and the willingness to pay (WTP) for the category of beach recreation tourism in Samuh Beach area, Bali. The research method used was descriptive qualitative. The parameters used to determine the value of the coastal recreation were beach type, beach width, current speed, brightness, depth, beach slope, water base material, current velocity, coastal land cover, hazardous biota, and availability of fresh water. The calculation result of the tourism suitability index value at Samuh Beach for beach recreation activities at station I was 2.05% which included in the Suitable category, station II was 2.88% which included in the Very Suitable category, and Station III was 2.92% which included in the category. Very Suitable category. Based on that result, it can be seen that station III occupies the highest IKW value in the Very Suitable category. The average value of tourism suitability index in Samuh Beach was 2.62% (very suitable category). The average value of the WTP was IDR 9.500,- and the total value was IDR 57.000.000,- - at Samuh Beach. This value was greater than the entrance fee for Samuh Beach tourism in the form of a motorbike parking fee of IDR 2000, - and a car park of IDR 5000,- respectively. Respondents are willing to pay more for environmental services obtained from tourism objects in Samuh Beach.
Analisis kondisi padang lamun di Gili Balu, Sumbawa Barat Natasya Caterina; Made Ayu Pratiwi; Ni Putu Putri Wijayanti
Jurnal Biologi Udayana Vol 28 No 1 (2024): JURNAL BIOLOGI UDAYANA
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBIOUNUD.2024.v28.i01.p08

Abstract

Penelitian dilakukan pada komunitas padang lamun di Pulau Belang, Pulau Paserang, Pulau Kenawa, dan Pulau Namo yang berlokasi di Gili Balu, Sumbawa Barat. Pengambilan data secara eksplorasi dilakukan pada bulan Januari 2022 dan pengolahan data dilakukan pada bulan Oktober hingga Desember 2022. Prosedur pengambilan data yang digunakan adalah prosedur pemantauan kondisi padang lamun menggunakan metode transek garis dan transek kuadrat yang mengacu pada Buku Panduan Pemantauan Padang Lamun LIPI. Pengambilan data dilakukan pada stasiun dengan membentangkan transek garis sepanjang 100 m dan transek kuadrat diletakkan di kanan transek garis. Pemantauan dilakukan per 10 m dan dilakukan hingga titik 100 m. Pengambilan data diulang sebanyak 3 kali Pengolahan data dilakukan untuk mendapatkan kategori dan kondisi padang lamun yang dibandingkan dengan kategori tutupan padang lamun oleh Buku Panduan Pemantauan Padang Lamun LIPI dan parameter kondisi padang lamun oleh Keputusan Menteri Lingkungan Hidup No. 200 Tahun 2004. Penelitian ini ditemukan lamun pada 2 stasiun kategori jarang yaitu Pulau Namo dan Kenawa dan 4 stasiun berkategori sedang yaitu Pulau Paserang, Pulau Belang bagian Barat Laut, Pulau Belang bagian Selatan dan Pulau Belang bagian Timur. Kategori penutupan baik diperoleh oleh stasiun Pulau Belang bagian Barat. Komunitas padang lamun yang tergolong dalam status kondisi padang lamun rusak dan miskin adalah Pulau Namo, Pulau Kenawa, dan Pulau Belang bagian Barat Laut. Pulau Paserang dan Pulau Belang bagian Selatan dan Timur tergolong dalam status kondisi padang lamun rusak dan kurang Sehat. Pulau Belang bagian barat tergolong dalam status kondisi padang lamun baik dan sehat.
GROWTH ASPECT OF FRIGATE TUNA (Auxis thazard Lacepède, 1800) IN KUSAMBA WATERS IN EAST SEASON Made Ayu Pratiwi; Endang Wulandari Suryaningtyas
Jurnal Perikanan Unram Vol 12 No 1 (2022): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v12i1.275

Abstract

Ikan Tongkol Krai atau frigate tuna (Auxis thazard) merupakan sumberdaya ikan pelagis dan neritik, memiliki ukuran maksimum hingga 65 cm (Fishbase, 2022). Di Bali Ikan Tongkol Krai ditemukan di perairan karangasem (Grati et al., 2017) ; (Putra et al., 2020) ; perairan kusamba (Luh et al., 2021); dan perairan kedonganan (Ayu Pratiwi et al., 2020). enelitian ini bertujuan untuk menduga pola pertumbuhan dan parameter pertumbuhan Ikan Tongkol Krai (Auxis thazard) di Perairan Kusamba. Sebanyak 121 sampel Auxis thazard diamat setiap ±14 hari sekali pada Bulan Juni sampai Agutus di Pangkalan Pendaratan Ikan (PPI) Kusamba. Pertumbuhan diduga dengan program ELEFAN pada software FISAT (FAO I-CLARM Stock Assesment Tools). Ukuran panjang minimum dan maksimum Ikan Tongkol Krai jantan berkisar antara  33.2-44.0 cmFL, sedangkan Ikan Tongkol Krai betina berkisar antara 31.4-40.8 cmFL. Pola pertumbuhan Ikan Tongkol Krai (Auxis thazard) di Perairan Kusamba berbeda antara jantan dan betina, yaitu bersifat allometrik positif pada ikan jantan dan allometrik negatif pada ikan betina. Allometrik positif dapat diartikan bahwa pertambahan bobot lebih cepat daripada pertambahan panjang, sedangkan allometrik negative diartikan bahwa pertambahan panjang lebih cepat daripada pertambahan bobot. persamaan pertumbuhan Von Bertalanffy Ikan Tongkol Krai di perairan Kusamba yaitu Lt = 50.00 [1-e-0.31(t+0.4658)] dengan nilai panjang asimtotik Ikan Tongkol Krai sebesar 50.00 cmFL; koefisien pertumbuhan sebesar 0.31/tahun; dan umur saat panjang sama dengan 0 sebesar -0.4658.
Status Assessment of Fish Resources Domain Based on The Ecosystem Approach to Management of Frigate Tuna (Auxis thazard) Fishery in Lombok Strait Waters Landed in East Seraya Village, Bali: Penilaian Status Domain Sumber Daya Ikan Berdasarkan Pendekatan Ekosistem untuk Pengelolaan Perikanan Tongkol Krai (Auxis thazard) di Perairan Selat Lombok yang Didaratkan di Desa Seraya Timur, Bali Putra, I Putu Yoga Pramana; Arthana, I Wayan; Pratiwi, Made Ayu; I Putu Yoga Pramana Putra
Jurnal Pengelolaan Perikanan Tropis (Journal of Tropical Fisheries Management) Vol 4 No 2 (2020): Jurnal Pengelolaan Perikanan Tropis
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v4i2.32770

Abstract

East Seraya Village is one of the villages as the centers of Frigate Tuna fishery in Karangasem Regency, Bali. Frigate tuna (Auxis thazard) is a main commodity of the fisherman catch. This study aimed to assess the status of fish resources domains based on an ecosystem approach to the management of Frigate Tuna (Auxis thazard) fishery in Lombok Strait Waters landed in East Seraya Village. This research was conducted from November 2019 to January 2020. Data collecting in this research was carried out by field observation, survey, and interviews. Data analysis was performed on each indicator using a multi-criteria analysis with composite index assessment and flag model visualizations. The observed indicators are CPUE trend, fish size trend, the juvenile fish proportion, the catch composition, range collapse of fish resources, and ETP species (Endangered, Threatened, and Protected Species). The assessment of status fish resources domain based on an ecosystem approach to the management of Frigate Tuna (Auxis thazard) fishery in Lombok Strait Waters landed in East Seraya Village was good category with a composite value of 61,67. The fish resources domain indicator showed the CPUE trend has been annually decreased of 7,80%, fish size trend are relatively fixed, the juvenile fish proportion was 100%, the catch composition is dominated bycatch target fish both from gillnet and trolling fishing gear with each percentage of 98% and 90.7%, range collapse of fish resources for fishing is increasingly difficult, and ETP species (Endangered, Threatened, and Protected Species) caught was in a very small amount.
An Ecosystem Approach to Small-Scale Cob Fishery Management through the Assessment of the Fishing Domain in Bali's Kusamba Waters: Pendekatan Ekosistem pada Pengelolaan Perikanan Tongkol Skala Kecil Melalui Penilaian Domain Penangkapan Ikan di Perairan Kusamba Bali Arthana, I Wayan; Pratiwi, Made Ayu; Pratama, I Gusti Agung Bagus Arya Pradnya
Jurnal Pengelolaan Perikanan Tropis (Journal of Tropical Fisheries Management) Vol 4 No 2 (2020): Jurnal Pengelolaan Perikanan Tropis
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v4i2.32772

Abstract

Pantai Segara Kusamba merupakan salah satu daerah penghasil ikan tongkol terbesar di Provinsi Bali sehingga nelayan menjadikan ikan tongkol (Auxis thazard) sebagai target utama tangkapan mereka. Penelitian ini bertujuan untuk mengetahui penilaian status domain teknik penangkapan ikan pada EAFM demi terwujudnya pengelolaan perikanan yang berkelanjutan. Indikator yang diamati antara lain metode penangkapan ikan yang destruktif dan/atau ilegal, modifikasi alat penangkap ikan dan alat bantu penangkapan, kapasitas penangkapan dan upaya penangkapan, serta selektifitas alat tangkap. Analisis data menggunakan skor likert berbasis ordinal 1, 2, 3. Pengambilan sampel dilakukan pada bulan November – Desember 2019 dengan selang waktu 1 minggu sebanyak 8 kali. Armada penangkapan ikan di Pantai Segara Kusamba menggunakan jukung dengan mesin motor tempel (<5 GT) atau setara 15 PK dengan alat tangkap jaring insang dan pancing ulur. Daerah penangkapan ikan yang dilakukan yaitu di perairan Kusamba hingga mendekati perairan Nusa Penida. Indikator metode peanngkapan ikan yang destruktif dan/atau ilegal memperoleh skor 3. Indikator modifikasi alat penangkapan ikan dan alat bantu penangkapan memperoleh skor 1. Indikator kapasitas perikanan dan upaya penangkapan memperoleh skor 3. Dan indikator selektifitas alat tangkap memperoleh skor 3. Domain teknik penangkapan ikan memperoleh nilai komposit sebesar 80,4 dengan deskripsi baik sekali dan model bendera berwarna hijau tua.
Pendekatan Ekosistem Pada Pengelolaan Perikanan Tongkol Skala Kecil Melalui Penilaian Domain Teknik Penangkapan Ikan Di Perairan Bali Timur: An Ecosystem Approach to Small-Scale Cob Fishery Management through the Assessment of the Fishing Technique Domain in East Bali Waters Watiniasih, Ni Luh; Pratiwi, Made Ayu; Samba, Roni Adi
Jurnal Pengelolaan Perikanan Tropis (Journal of Tropical Fisheries Management) Vol 5 No 2 (2021): Jurnal Pengelolaan Perikanan Tropis
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v5i2.35725

Abstract

Karangasem's fishery potential is very large due to the large distribution of small-scale cathing fisheries areas along the coastal areas of Karangasem. The purpose of this study was to see the condition of small-scale tuna fisheries through the status of the fishing domain which refers to the Ecosystem Approach Fisheries Management (EAFM). Based on the results of the calculation of the composite value, the domain status of fishing techniques in East Seraya Village obtained a score of 68.62. These results indicate that the EAFM status of the fishing technique domain in East Seraya Village is categorized as good. However, from the results of the assessment, there are still two indicators that have bad status. This is due to the assessment of indicators of modification of fishing gear >50% of fish catches of fishermen in East Seraya Village are under Lm. And the indicators of Fishery Capacity and Catching Efforts show conditions that have been overcapacity
Co-Authors Ahmad Fauzi Angel Maria Arief Atanasius Jenarut Ayu Padma Sari Bachori Dhian Pratama Cintya Kriss Jayanthi Dewa Gde Tri Bodhi Saputra Elok Faiqoh Endang Wulandari Suryaningtyas Gde Raka Angga Kartika Ghina Nafis Rahmatullah Hanif Abdullah I Made Sara Wijana I Made Suma Krisna Sravishta I Putu Yoga Pramana Putra I Wayan Arthana I Wayan Arthana I Wayan Restu I Wayan Rian Riki Saputra Ida Ayu Novera Wandiani Ima Yudha Perwira Indah Nurtira Ketut Tika Suariningsih Kindy Nurrani Annisa Komang Kerta Sanjaya Krisna Jumantara Panca Putra Luky Adrianto Mawardi Labbaik Muhammad Alfiansyah Mahmud Natasya Caterina Ni Luh Kade Putri Purwaningsih Ni Luh Sari Risna Dwi Jayanti Ni Luh Watiniasih Ni Made Ernawati, Ni Made Ni Putu Putri Wijayanti Nyoman Dati Pertami Pande Ditha Prasatia Pande Gde Sasmita Julyantoro Pratama, I Gusti Agung Bagus Arya Pradnya Putra, I Putu Yoga Pramana Ribka Evanzelina Laia S.A NYOMAN PUTRI TRIANTINI Samba, Roni Adi Sang Ayu Indah Sukma Dewi Suryaningtyas, Endang Wulandari Yufinta Cahya Permanti Yusli Wardiatno