Jurnal Ilmiah PLATAX
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Induction Time And Sedative (Recovery) Time In Closed System Transportation Of Tawes Fish (Barbonymus gonionotus) Anesthetized With Clove Oil At Different Temperatures
Get PDFThe conservation of tawes fish (Barbonymus gonionotus) is carried out through aquaculture and restocking, where seed transportation is a crucial factor affecting survival rates. Mishandling during transport can increase stress, metabolism, and mortality risk. Reducing stress during transport can be achieved by using natural anesthetic agents such as clove oil (Eugenia aromatica) and low-temperature regulation. This study aims to analyze the effects of clove oil dosage and temperature on the induction time and recovery of tawes fish seeds. The experiment was designed using a completely randomized design (CRD) with two factors: clove oil dosage (0 ppm, 5 ppm, 10 ppm) and temperature (16–19°C and 24–27°C), with 18 experimental units (3 replications). Data were analyzed using ANOVA (JMP-SAS). The results showed that combining clove oil and temperature significantly affected induction and recovery times. The 10 ppm clove oil treatment at 16–19°C resulted in the fastest induction time, while the 0 ppm treatment at 24–27°C led to the fastest recovery. The interaction between these factors demonstrated that clove oil significantly influenced the fish's response to temperature changes.
Keywords: tawes fish seed, transportation, temperature, clove oil, induction, sedative.
Abstrak
Pelestarian ikan tawes (Barbonymus gonionotus) dilakukan melalui budidaya dan restocking, di mana transportasi benih menjadi faktor krusial yang memengaruhi tingkat kelangsungan hidupnya. Kesalahan dalam penanganan dapat meningkatkan stres, metabolisme, dan risiko kematian benih. Upaya menekan stres selama transportasi dilakukan dengan penggunaan agen pembius alami, seperti minyak cengkih (Eugenia aromatica) dan pengaturan suhu rendah.Penelitian ini bertujuan menganalisis pengaruh dan dosis minyak cengkih serta suhu terhadap waktu induksi dan pemulihan (recovery) benih ikan tawes. Percobaan menggunakan rancangan acak lengkap (RAL) dengan dua faktor: dosis minyak cengkih (0 ppm, 5 ppm, 10 ppm) dan suhu (16–19°C dan 24–27°C), dengan 18 unit percobaan (3 ulangan). Data dianalisis menggunakan ANOVA (JMP-SAS).Hasil penelitian menunjukkan bahwa kombinasi minyak cengkih dan suhu berpengaruh signifikan terhadap waktu induksi dan pemulihan benih. Perlakuan 10 ppm minyak cengkih pada suhu 16–19°C menghasilkan waktu induksi tercepat, sedangkan tanpa minyak cengkih pada suhu 24–27°C mempercepat pemulihan. Interaksi kedua faktor ini menunjukkan bahwa minyak cengkih secara nyata mempengaruhi respons ikan terhadap perubahan suhu.
Kata kunci: benih tawes, transportasi, suhu, minyak cengkih, induksi, sedatif
Analysis Of Tsunami Hazard Potential On The Coast Of Bitung City, North Sulawesi
Get PDFThis thesis aims to study the tsunami hazards in the Maluku Sea region, particularly in the coastal area of Bitung, Indonesia. The research focuses on modeling and analyzing the potential tsunamis triggered by earthquake events in that region. The data used includes bathymetry, topography, coastline, and river data obtained from the Geospatial Information Agency (Badan Informasi Geospatial-BIG). The tsunami modeling process utilizes the software COMCOT (Cornell Multi-grid Coupled Tsunami). The earthquake source parameters (PusGen) used in the modeling, such as magnitude, focal depth, length of the fault plane, the width of the fault plane, dislocation of the fault plane, strike, dip, slip/rake, and modeling area, were obtained from worst-case scenarios based on PusGen's research results. The research consists of two main stages: the pre-verification stage, where data processing and tsunami modeling are conducted, and the verification stage, where field surveys are carried out to determine the coordinates for Temporary Evacuation Sites (TEP) and Final Evacuation Sites (FEP). Various equipment, such as GPS, altimeters, stopwatches, cameras, and drones, are used during the field verification. The research procedures include a literature review, data collection of topography, bathymetry, earthquake parameters, and fault mechanism. Subsequently, tsunami modeling is conducted, and hazard analysis is performed based on the model results. Tsunami hazard maps are generated to highlight high-risk areas in the coastal region of Bitung, and evacuation routes are identified to prepare the coastal community of Bitung to face potential tsunami threats. The research offers important information to assist in the development of warning systems and efficient evacuation strategies to protect the coastal community of Bitung from tsunamis' devastating impacts.
Keywords: Tsunami; Bitung; coastal area; earthquake; PusGe
Indicator Species and Diversity in Mangroves at Darunu Mangrove Park
Get PDFMangrove ecosystems play a crucial role in maintaining the ecological balance of coastal areas, including protection against abrasion, providing habitat for marine species, and acting as a carbon sink. This study aims to identify indicator species and analyze biodiversity in Darunu Mangrove Park, Darunu Village, Wori Subdistrict, North Minahasa Regency. The research was conducted over three months (May–July 2024) using a line transect method for vegetation data collection. The results show that three dominant mangrove species were identified: Rhizophora apiculata, Rhizophora mucronata, and Sonneratia alba. R. mucronata exhibited significant dominance, both in terms of mature trees and saplings, and had the highest Important Value Index (IVI). The mangrove species diversity in this area is classified as low, with the. Diversity Index (H’) indicates an imbalance in the ecosystem's species composition. The Dominance Index (C) and Evenness Index (E) analyses indicate strong dominance by certain species, particularly R. mucronata. This study recommends the importance of enhanced monitoring and more intensive conservation efforts, including the replanting of threatened mangrove species and raising community awareness of mangrove ecosystem conservation.
Keywords: Darunu Mangrove Park, Diversity, Indicator Species, Important Value Index.
Abstrak
Ekosistem mangrove memiliki peran penting dalam menjaga keseimbangan ekologi pesisir, meliputi perlindungan terhadap abrasi, penyedia habitat bagi spesies laut, dan sebagai penyerap karbon. Penelitian ini bertujuan untuk mengidentifikasi spesies indikator dan menganalisis keanekaragaman hayati di Darunu Mangrove Park, Desa Darunu, Kecamatan Wori, Kabupaten Minahasa Utara. Penelitian dilaksanakan selama tiga bulan (Mei-Juli 2024) dengan menggunakan metode transek garis untuk pengambilan data vegetasi. Hasil penelitian menunjukkan bahwa terdapat tiga jenis mangrove dominan, yaitu R. apiculata, R. mucronata, dan S. alba. Jenis R. mucronata menunjukkan dominasi yang signifikan, baik pada tingkat pohon maupun pancang, serta memiliki nilai Indeks Nilai Penting (INP) tertinggi. Keanekaragaman jenis mangrove di kawasan ini tergolong rendah dengan Indeks Keanekaragaman (H’) menunjukkan ketidakseimbangan spesies dalam ekosistem. Analisis Indeks Dominansi (C) dan Indeks Kemerataan (E) mengindikasikan adanya dominasi yang kuat dari beberapa spesies tertentu, terutama R. mucronata. Penelitian ini merekomendasikan pentingnya pemantauan dan upaya konservasi yang lebih intensif, termasuk penanaman kembali spesies mangrove yang terancam dan peningkatan kesadaran masyarakat terhadap pelestarian ekosistem mangrove.
Kata kunci: Darunu Mangrove Park, Indeks Nilai Penting, Keanekaragaman, Spesies indicato
Optimisation Of Papain Enzyme Use As An Effort To Increase The Hatching Degree Of Mutiara Catfish (Clarias gariepinus) Eggs
Get PDFThis study aims to analyze the effect of commercial papain enzyme with different concentrations and duration of soaking on increasing the degree of hatching of pearl catfish (Clarias gariepinus) eggs. The study used a Randomised Group Design (RAK) with variations in papain enzyme concentration (0, 2, 4, 6, and 8 ppm) and soaking duration (5, 10, and 15 minutes). The results showed that papain enzyme concentration and soaking duration significantly affected the degree of hatching (p < 0,001). The optimal concentration of papain enzyme was 6 ppm with a soaking duration of 10 minutes, resulting in the highest hatching rate of 70,52%±2,92. The lowest egg adhesion was produced at a concentration of 8 ppm with a duration of 15 minutes (32%±4,00), while the highest degree of fertilization was directed at a concentration of 6 ppm with a duration of 10 minutes (79%±3,61). The measurement results of water quality parameters are: temperature 25,6-26,4°C, pH 7,12-7,47, and dissolved oxygen 4,06-4,41 ppm. These results indicate that the papain enzyme effectively reduces egg adhesion and increases the hatching rate of pearl catfish eggs.
Keywords: mutiara catfish; papain enzyme; hatching rate; concentration; immersion duration.
Abstrak
Penelitian ini bertujuan untuk menganalisis pengaruh enzim papain komersial dengan konsentrasi dan durasi perendaman yang berbeda terhadap peningkatan derajat penetasan telur ikan lele mutiara (Clarias gariepinus). Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan variasi konsentrasi enzim papain (0, 2, 4, 6 dan 8 ppm) dan durasi perendaman (5, 10 dan 15 menit). Hasil penelitian menunjukkan bahwa konsentrasi enzim papain dan durasi perendaman berpengaruh signifikan (p <0,001) terhadap derajat penetasan. Konsentrasi optimal enzim papain adalah 6 ppm dengan durasi perendaman 10 menit, menghasilkan derajat penetasan tertinggi sebesar 70,52%±2,92. Daya rekat telur terendah dihasilkan pada konsentrasi 8 ppm dengan durasi 15 menit (32%±4,00), sedangkan derajat pembuahan tertinggi dihasilkan pada konsentrasi 6 ppm dengan durasi 10 menit (79%±3,61). Hasil pengukuran parameter kualitas air yaitu: suhu 25,6–26,4°C, pH 7,12–7,47 dan oksigen terlarut 4,06–4,41 ppm. Hasil ini menunjukkan bahwa enzim papain efektif mengurangi daya rekat telur dan meningkatkan derajat penetasan telur ikan lele mutiara.
Kata kunci: ikan lele mutiara; enzim papain; derajat penetasan; konsentrasi; durasi perendama
Study on the Role and Contribution of Women to the Income of Fishing Families
Get PDFThe purpose of this research is to carefully analyze the role of women in contributing to the income of fishing families in Tambun Village, Likupang Barat District. The research will be conducted in Tambun Village, Likupang Barat District, using the Purposive Sampling research method. The criteria for the respondents are: married, have a fisherman husband, and reside in Tambun Village. The total number of respondents is 20 people. Based on the research findings, there are two roles of women in Tambun Village: Public Role and Domestic Role. Furthermore, the research shows that women residing in Tambun Village, Likupang Barat District, North Minahasa Regency, contribute 49% to the total family income. This figure indicates that the income of women as fishermen's wives has not yet become a primary source of family income. This research will contribute to achieving the UNSRAT 2021-2025 Strategic Plan in the Maritime Excellence sector, focusing on the research topic of Empowerment and Increasing Women’s Participation and Social Inclusion in the Maritime Environment.
Keywords: Women's roles, family income, Tambun Village, tourism.
Abstrak
Tujuan penelitian ini adalah untuk menganalisis dengan cermat berapa besar peran perempuan dalam berkontribusi terhadapat pendapatan keluarga nelayan di Desa Tambun Kecamatan Likupang Barat. Lokasi penelitian akan dilaksanakan di Desa Tambun Kecamatan Likupang Barat dengan menggunakan metode penelitian Purposive Sampling, kriteria responden yaitu : sudah berumah tangga dan bersuamikan seorang nelayan dan tinggal di Desa Tambun. Jumlah responden berjumlah 20 orang. Berdasarkan hasil penelitian terdapat 2 Peran Perempuan didesa Tambun yaitu Peran Publik dan Peran Domestik selain itu berdasarkan penelitian terlihat bahwa perempuan yang bermukim Desa Tambun Kecamatan Likupang Barat Kabupaten Minahasa Utara berkonrtibusi sebesar 49 % terhadap total pendapatan keluarga. Nilai ini menunjukkan bahwa pendapatan perempuan sebagai isteri nelayan belum menjadi tumpuan pendapatan keluarga. Penelitian ini akan berkontribusi pada pencapaian RENSTRA UNSRAT 2021 – 2025 di Bidang Unggulan Kemaritiman yang difokuskan pada topik riset Pemberdayaan dan Peningkatan Partisipasi Perempuan dan Inklusi Sosial dalam Lingkungan Kemaritiman.
Kata kunci : Peran perempuan, pendapatan keluarga, Desa Tambun, Pariwisata
The Function Of Spatial Planning In Maintaining The Environmental Preservation Of West Pasaman District
Get PDFAbstract:
This research examines the role of spatial planning in preserving the environment in West Pasaman Regency. The main aim of this research is to evaluate how the implementation of spatial planning can support environmental conservation efforts. The method used is qualitative descriptive analysis with a case study approach. Data was collected through in-depth interviews, field observations, and analysis of spatial planning documents. The research results show that good and well-planned spatial planning can reduce pressure on natural resources and improve the quality of the living environment. However, challenges such as weak law enforcement and low public awareness are still the main obstacles. In conclusion, the integration of spatial planning policies that pay attention to environmental aspects is very crucial to achieving sustainable development in West Pasaman Regency.
Keywords: Environment; Spatial; Continuity;
Abstrak
Penelitian ini menelaah peran tata ruang dalam menjaga kelestarian lingkungan hidup di Kabupaten Pasaman Barat. Tujuan utama dari penelitian ini adalah untuk mengevaluasi bagaimana implementasi tata ruang dapat mendukung upaya pelestarian lingkungan. Metode yang digunakan adalah analisis deskriptif kualitatif dengan pendekatan studi kasus. Data dikumpulkan melalui wawancara mendalam, observasi lapangan, dan analisis dokumen perencanaan tata ruang. Hasil penelitian menunjukkan bahwa tata ruang yang baik dan terencana dapat mengurangi tekanan terhadap sumber daya alam dan meningkatkan kualitas lingkungan hidup. Namun, tantangan seperti lemahnya penegakan hukum dan rendahnya kesadaran masyarakat masih menjadi hambatan utama. Kesimpulannya, integrasi kebijakan tata ruang yang memperhatikan aspek lingkungan sangat krusial untuk mencapai pembangunan berkelanjutan di Kabupaten Pasaman Barat.
Kata Kunci : Lingkungan; Tata Ruang; Keberlanjutan
Comcot 1.7 Modeling To Estimate The Maximum Height And Arrival Time Of The Tsunami In Tombariri Sub-District
Get PDFTombariri Sub-District is located on the North Coast of the Minahasa Peninsula, directly opposite the North Sulawesi Subduction. North Sulawesi subduction has the potential for earthquakes with a targeted magnitude of M8.5 that can generate tsunamis. In addition, Tombariri Sub-District has a fairly large population density and is located on the coast. This causes the Tombariri Sub-District to be highly vulnerable to tsunami hazards. This study aims to determine the tsunami's estimated maximum height and arrival time. The modeling method in this study is through the Comcot 1.7 application with the worst-case scenario of North Sulawesi Subduction M8.5. The results of this study showed that the maximum height of the tsunami reached 6.17 m. The estimated time of tsunami arrival in Tombariri District ranges from 5-10 minutes. The results of this study can be used as a means of mitigating tsunami disasters.
Keywords: Comcot, Tsunami Modeling, Inundation, Numeric Simulation
Abstrak
Kecamatan Tombariri terletak di wilayah Pesisir Utara Semenanjung Minahasa yang berhadapan langsung dengan Subduksi Sulawesi Utara. Subduksi Sulawesi Utara memiliki potensi gempabumi dengan magnitudo tertarget M8.5 yang dapat membangkitkan tsunami. Selain itu, Kecamatan Tombariri memiliki kepadatan penduduk yang cukup besar dan berada di wilayah pesisir. Hal ini menyebabkan Kecamatan Tombariri memiliki tingkat kerawanan terhadap bahaya tsunami yang tinggi. Penelitian ini bertujuan untuk mengetahui estimasi ketinggian maksimum dan waktu tiba tsunami. Metode pemodelan dalam penelitian ini melalui aplikasi Comcot 1.7 dengan skenario terburuk Subduksi Sulawesi Utara M8,5. Hasil dari penelitian ini menunukkan bahwa tinggi maksimum tsunami mencapai 6,17 m. Estimasi waktu tiba tsunami di Kecamatan tombariri berkisar antara 5 - 10 menit. Hasil dari penelitian ini dapat digunakan sebagai sarana mitigasi bencana tsunami.
Kata Kunci : Comcot, Pemodelan tsunami, Simulasi Numerik
Description of Yellowfin Tuna Processing
Get PDFMorotai Island Regency has very abundant potential, namely tuna. The abundance of tuna fishermen's catches has become an opportunity to develop tuna loin processing, one of which is at PT. Harta Samudra Morotai. This research aims to describe the processing process carried out at PT. Harta Samudra. PT. Harta Samudra has 90 employees, 84 of whom are residents. Of the total employees, 11 are permanent employees and the other 79 are daily employees. The tuna loin processing process refers to SNI 01-4104.3-2006: receiving, beheading, butchering, trimming, gas room, chiller, retouching, packing, stuffing, and laboratory analysis.
Keywords: Yellowfin Tuna; Frozen Loin Tuna; PT. Harta Samudra
Abstrak
Kabupaten Pulau Morotai, memiliki potensi yang sangat melimpah, yakni tuna. Melimpahnya hasil tangkapan nelayan tuna, menjadi peluang dikembangkannya pengolahan Tuna loin salah satunya di PT. Harta Samudra Morotai. Penelitian ini bertujuan untuk mendeskripsikan proses pengolahan yang dilakukan di PT. Harta Samudra. PT. Harta samudra memiliki 90 karyawan, 84 diantaranya merupakan penduduk lokal. Dari total keseluruhan karyawan 11 diantaranya merupakan karyawan tetap dan 79 lainnya merupakan karyawan harian. Proses pengolahan tuna loin mengacu pada SNI 01-4104.3-2006 yakni receiving, deheading, butchering, trimming, gas room, chiller, retouching, packing, stuffing dan analisis laboratorium.
Kata Kunci : Tuna Ekor Kuning; Tuna Loin Beku; PT. Harta Samudr
Analysis of the Living Standards of Fishing Families in the Hook-and-Line Fishing Industry Based on Women's Empowerment in Tateli Village
Get PDFThe specific objectives of this study are: Identifying and carefully explaining the standard of living of fishing families based on women's empowerment/housewives in Tateli Dua Village, Mandolang District, Minahasa Regency. 1. The method used in this study is the census method. 2 Data Collection Techniques Data collected through two sources, namely primary data and secondary data. Primary data is data that is directly obtained through direct interviews at the research location, filling out questionnaires. 3 Data Analysis Methods Analysis of research data results is divided into two types, namely quantitative analysis and qualitative analysis. Engel Index Analysis, because the Engel index is one way to reflect the standard of living of a person or group of people. The results of the analysis using the Engel Index obtained a figure of 28.52%, this means that the total income of fishermen who own fishing rods is not much, even less than half of their income is used for food needs only. It can be concluded that the level of welfare of fishermen who own fishing rods is classified as good / high because more than half of their income for food needs, namely 71.47%, is used for non-food needs. This means that their lives in the house already have other facilities, such as having a television in addition to children who are well schooled. This is greatly supported by the role of fishermen's wives in working and being able to provide economic support for the family.
Keywords: Standard of Living, Women's Empowerment, Hand Fishing
Abstrak
Tujuan khusus dalam penelitian ini, yaitu : Mengidentifikasikan dan menjelaskan dengan cermat taraf hidup keluarga nelayan pancing berbasis pemberdayaan wanita/ibu rumah tangga di Desa Tateli Dua Kecamatan Mandolang Kabupaten Minahasa. 1. Metode dalam penelitian ini dipakai metode sensus. 2 Teknik Pengumpulan Data Data yang dikumpulkan melalui dua sumber yaitu data primer dan data sekunder. Data primer adalah data yang langsung diperoleh melalui wawancara langsung di loakasi penelitian, pengisian kuisioner. 3 Metode Analisis Data Analisis data hasil penelitian dibedakan dalam dua macam, yaitu analisis kuantitatif dan analisis kualitatif. Analisis Indeks Engel, karena indeks Engel merupakan salah satu cara untuk mencerminkan taraf hidup seseorang atau sekelompok orang. Hasil analisis dengan menggunakan Indeks Engel diperoleh angka 28,52 %, ini berarti bahwa total pendapatan nelayan pemilik pancing tidak banyak bahkan tidak sampai separuh pendapatannya yang digunakan kebutuhan makanan saja. Hal ini dapat disimpulkan bahwa tingkat kesejahteraan nelayan pemilik pancing tergolong baik/tinggi karena lebih dari separuh pendapatannya kebutuhan pangan saja yaitu sebesar 71,47% digunakan untuk kebutuhan non pangan. Ini berarti kehidupan mereka di dalam rumah sudah ada fasilitas yang lain misalnya memiliki televisi disamping anak-anak yang disekolahkan dengan baik. Hal ini sangat ditunjang oleh peranan istri nelayan dalam ikut bekerja dan bisa memberikan dukungan ekonomi bagi keluarga.
Kata kunci : Taraf Hidup, Pemberdayaan Wanita, Pancing Ulur
Community Structure of Macroalgae in the Coastal Waters of Tiwoho Village, Wori District, North Minahasa Regency
No full textThe purpose of this study is to describe the morphology and anatomy of each macroalgae species and to analyze the community structure of macroalgae from the study location. Data collection was carried out using the Line Transect method with quadrat sampling techniques conducted at the lowest tide. Temperature measurement was done using a thermometer and salinity using a refractometer, while substrate determination was visually assessed based on the type of substrate. The results of this study found 7 species, consisting of 1 species of red algae, 4 species of brown algae, and 2 species of green algae. The morphology of these algae types varies with different anatomies based on cross and longitudinal sections of each part of the algal thallus. The highest species density was Turbinaria ornata (transect 1), while the lowest density was Halimeda opuntia and Sargassum polycystum (transect 1), Turbinaria ornata (transect 2 and transect 3). The macroalgae diversity index values on the three transects were in the medium category. The species evenness index values on the three transects were stable. The species richness index values on the three transects were in the low category. The dominance index values on the three transects were in the low category.
Keywords: Macroalgae, Community, Transect, Quadrat, Tiwoho.
Abstrak
Tujuan penelitian ini adalah mendeskripsikan morfologi dan anatomi masing-masing spesies makroalga, dan menganalisis stuktur komunitas makroalga dari lokasi penelitian. Pengambilan data menggunakan metode Line Transect dengan teknik sampling kuadrat yang dilakukan pada saat surut terendah. Pengukuran suhu menggunakan Termometer dan salinitas menggunakan Refraktometer, dan untuk penentuan substrat dilihat secara visual jenis dari substrat tersebut. Hasil penelitian ini ditemukan 7 spesies yang terdiri dari 1 spesies alga merah, 4 spesies alga coklat dan 2 spesies alga hijau. Morfologi jenis-jenis alga tersebut beragam dengan anatomi yang berbeda berdasarkan potongan melintang dan memanjang dari masing-masing bagian thallus alga. Kepadatan spesies tertinggi yaitu Turbinaria ornata (transek 1) sedangkan kepadatan terendah yaitu Halimeda opuntia dan Sargassum polycystum (transek 1), Turbinaria ornata (transek 2 dan transek 3). Nilai indeks keanekaragaman makroalga pada ketiga transek termasuk dalam kategori sedang. Nilai indeks kemerataan jenis pada ketiga transek termasuk dalam keadaan stabil. Nilai indeks kekayaan jenis pada ketiga transek termasuk dalam kategori rendah. Nilai indeks dominasi pada ketiga transek termasuk dalam kategori rendah.
Kata kunci: Makroalga, Komunitas, Transek, Kuadrat, Tiwoho