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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 Penelitian Pendidikan IPA (JPPIPA) 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 Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Physics Other

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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 Roni Adi Samba; Ni Luh Watiniasih; Made Ayu Pratiwi
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

Potensi perikanan Karangasem sangat besar dikarenakan terdapat banyaknya sebaran kawasan perikanan tangkap skala kecil di sepanjang wilayah pesisir pantai Karangasem. Tujuan penelitian ini adalah untuk melihat kondisi perikanan tangkap tongkol sekala kecil melalui status domain teknink penangkapan Ikan yang mengacu pada Pengelolaan Perikanan Berpendekatan Ekosistem (EAFM). Berdasarkan hasil perhitungan nilai komposit, status domain teknik penangkapan ikan di Desa Seraya Timur memperoleh skor 68,62. Hasil tersebut mengindikasikan bahwa status EAFM domain teknik penangkapan ikan di Desa Seraya Timur tergolong kategori baik. Namun dari hasil penilaian tersebut masih terdapat dua indikator yang berstatus buruk. Hal ini disebabkan pada penilaian indikator modifikasi alat tangkap >50% hasil tangkapan ikan nelayan di Desa Seraya Timur berukuran dibawah Lm. Dan pada indikator Kapasitas Perikanan dan Upaya Penangkapan menunjukan kondisi yang telah overcapacity
KOMPOSISI JENIS DAN TUTUPAN TERUMBU KARANG DI PANTAI SAMUH, NUSA DUA, BALI Krisna Jumantara Panca Putra; I Wayan Arthana; Made Ayu Pratiwi
Bumi Lestari Journal of Environment Vol 22 No 1 (2022)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2022.v22.i01.p05

Abstract

Terumbu karang dikenal sebagai ekosistem yang sangat kompleks dan produktif dengan keanekaragaman biota seperti moluska, crustacea dan ikan karang. Keragaman hayati karang, fungsi ekologis dan ekonomis tinggi juga di ikuti oleh ancaman yang tinggi dai berbagai aktifitas manusia. Penelitian ini bertujuan untuk mengetahui komposisi jenis dan tutupan Terumbu karang. Penelitian menggunakan metode Purposive Random Sampling. Pengambilan data pada 2 stasiun dengan 3 kedalaman berbeda 3m, 7m, dan 10m dilakukan dengan menggunakan metode transek kuadran 1x1 m2. Penelitian menemukan 15 jenis Terumbu karang di Pantai Samuh meliputi Acropora Baranching (ACB), Acropora Encrusting (ACB), Acropora Submassive (ACS), Acropora Digitate (ACD), Acropora Tabulate (ACT), Non - Acropora Baranching (CB), Non – Acropora Encrusting (CE), Non – Acropora Foliose (CF), Non – Acropora Massive (CM), Non – Acropora Sub Massive (CS), Non – Acropora Mushroom (CMR), Non – Acropora Millepora (CME), Non – Acropora Helliopora (CHL), Soft Coral (SC), Sponge (SP), Zoanthida (ZO), Other (OT). Persentase tutupan Acropora lebih tinggi dibandingkan karang lainnya. Persentase tutupan Terumbu karang tertinggi terdapat di kedalaman 10 m sebanyak 94,75%, terendah di kedalaman 3 m sebanyak 80,66%. Berdasarkan hasil analisis diperoleh kondisi penutupan Terumbu karang di Peraian Pantai Samuh secara umum tergolong dalam kategori baik sekali dan terjaga.
Penilaian Kondisi Teknik Penangkapan Ikan Lemuru (Sardinella lemuru) Berdasarkan Pendekatan EAFM di PPI Kedonganan, Bali Atanasius Jenarut; 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

Ecosystem Approach to Fisheries Management (EAFM) is a management concept through an integrated and ecosystem-based approach. This study aimed to describe the condition of Bali Sardinella (Sardinella lemuru) at Kedonganan Fish Port and assess the management of this species based on the EAFM fishing technique domain. The assessment method refers to the methodology used by the National Working Group on EAFM, Directorate of Fish Resources, Ministry of Marine Affairs and Fisheries of Republic Indonesia, 2014. Data analysis used a Likert score based on ordinal 1, 2, 3 against indicators such as destructive/illegal fishing methods, modification of fishing gear, fishery capacity and fishing effort, fishing selectivity. Then, function suitability indicators and size of the ship is fishing boat crew certification adjusted to the status of Kedonganan fish port. Kedonganan fish port was a small- scale fishery. The scores obtained for each indicator was destructive/illegal fishing methods get a score of 2, modification of fishing gear get a score of 1, while indicators of fishery capacity and fishing effort and fishing selectivity get a score of 3. Lemuru fisheries management at Kedonganan fish port technical classified as good with the composite value of 69.
Aspek Biologi Reproduksi Ikan Tongkol Krai (Auxis thazard Laceoede, 1800) di Perairan Kedonganan, Badung Bali Ni Luh Kade Putri Purwaningsih; 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

Frigate tuna is one type of small pelagic fish that belongs to the neritic tuna (15-30 mil). This study aimed to determine the reproductive biology aspects of frigate tuna (Auxis thazard). Reproductive biology aspects can be identified by observing the sex ratio, gonad maturity level gonadal maturity index, fecundity and the size of the first gonadal maturity. Sampling was carried out in January – March 2021 with a span of 14 days at the Kedonganan Fish Landing Base. Samples were obtained from local fishermen who do one day fishing. The total fish samples observed during the study were 161 males and 174 females (335 individuals). The sex ratio of male and female tuna is 1:0.9 and is stated to be in a balanced condition. Furthermore, the gonad maturity level, during the study was dominated by levels II and III, with the gonad maturity index of male fish ranging from 6.25 to 8.31 and female fish 6.26 to 8.91. The spawning period for tuna krai in Kedonganan waters occurs in January-March and the peak of spawning occurs in March. The fecundity of krai cobs ranged from 75107 to 750470 grains (average 201.463 grains). The size of the gonads at first maturity of male krai tuna was slower than that of female tuna (321 and 336 in mm).
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.
Co-Authors Ahmad Fauzi Angel Maria Arief Atanasius Jenarut Ayu Padma Sari Bachori Dhian Pratama Cintya Kriss Jayanthi Desak Putu Permathasari Dewa Gde Tri Bodhi Saputra Elok Faiqoh Endang Wulandari Suryaningtyas Gde Raka Angga Kartika Ghina Nafis Rahmatullah Hanif Abdullah I Gusti Agung Bagus Arya Pradnya Pratama I Made Sara Wijana I Made Suma Krisna Sravishta I Putu Yoga Pramana Putra 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 Nastiti, Amayliana Ajeng 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 Ribka Evanzelina Laia Roni Adi Samba S.A NYOMAN PUTRI TRIANTINI Sang Ayu Indah Sukma Dewi Suryaningtyas, Endang Wulandari Yufinta Cahya Permanti Yusli Wardiatno