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INDONESIA
JURNAL ILMIAH PLATAX
Published by Universitas Sam Ratulangi
ISSN : 23023589     EISSN : -     DOI : -
Core Subject : Social,
Environmental Science
Mencakup Penulisan yang berhubungan dengan pelaksanaan penelitian yang dilakukan secara mandiri, atau kelompok, dan berdasarkan Ruang Lingkup Pengelolaan Wilayah Pesisir, Konservasi, Ekowisata, dan Keanekaragaman Hayati Perairan.
Arjuna Subject : -
Articles 488 Documents
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The The potency of mackerel scad (Decapterus macarellus) caught in WPP 716 of North Sulawesi waters by Purse Seiner landed at the coastal fishing port of Tumumpa, Manado Gahunting, Dedy; Sitanggang, Effendi. P; Dien, Heffry. V
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.49182

Abstract

The research aims to analyze the potentiality of MSY, total allowable catch (TAC), optimum effort (EMSY), and CPUE, based on the annual official report of catch and effort during 2018 - 2022 and some biological aspects of 100 fishes taken at random as samples. The results showed, the highest catch was in 2021 of 4,776,970 tons with an effort of 22,216 trips, and the lowest in 2018 of 1.610.792 tons with an effort of 14.805 trips. The MSY was 4.374.723 tons/year with a TAC of 3.499.779 tons/year and an EMSY of 20,184 trip/year. Using α 5%, it resulted in an average length of 20,64 ± 0.40 cm, and an average weight of 146.16 ± 9.98 g, with W = 0,2388 L2,1115 (W weight, L length). categorized a negative allometric growth (b < 3), with K (condition factor) 1.01 ± 0.10, and sex ratio (male and female) was 1.38: 1. The 42 female fishes had an average length of 21.09 ± 0.50 cm, average weight 154.50 ± 12.30 g, with W = 0,0061 L3.3172, categorized an isometric growth (b = 3) with K 1.00 ± 0.01, while the 58 male fishes had an average length of 20.31 ± 0.57 cm, average weight 140.12 ± 9.99 g, with W = 0,7748 L1.7313, categorized a negative allometric growth (b < 3) with K 1.02 ± 0.05. Keywords: Decapterus macarellus, WPP 716, purse seiners, MSY, length-weight relationship, coastal fishing port, Tumumpa Manado Abstrak Penelitian ini bertujuan menganalisis potensi MSY dan jumlah tangkapan yang diperbolehkan (JTB), upaya pemanfaatan optimum, tingkat pemanfaatan MSY, serta menganalisis beberapa aspek biologis ikan layang biru hasil tangkapan pukat cincin ini, melalui pengambilan 100 ekor sampel acak. Hasil penelitian menunjukkan jumlah tangkapan tertinggi tahun 2021 yaitu 4.776.970 ton dengan upaya penangkapan 22.216 trip, dan terendah tahun 2018 dengan jumlah tangkapan 1.610.792 ton dengan upaya 14.805 trip. Potensi maksimum lestari (CMSY) ikan ini tercatat 4.374.723 ton/tahun dan JTB 3.499.779 ton/tahun dengan upaya maksimum lestari (EMSY) 20.184 trip/tahun. Menggunakan α 5%, diperoleh panjang rerata 20,64 ± 0.40 cm, berat rerata 146.16 ± 9.98 g dengan hubungan) yaitu W = 0,2388 L2,1115 (berat (W berat, L panjang cagak) yang terkategori alometrik negatif (b < 3), dengan K (faktor kondisi)) 1.01 ± 0.10 , dan nisbah kelamin antara jantan dan betina tercatat 1,38 : 1. Ikan layang betina (n = 42) memiliki panjang rerata 21.09 ± 0.50 cm, berat rerata 154.50 ± 12.30 g, dengan hubungan W = 0,0061 L3.3172 yang terkategori isometrik (b = 3) dengan K = 1.00 ± 0.01, sementara 58 ikan jantan memiliki panjang rerata 20.31 ± 0.57 cm, berat rerata 140.12 ± 9.99 g, dengan hubungannya W = 0,7748 L1.7313 terkategori alometrik negatif (b < 3) dengan K 1.02 ± 0.05. Kata kunci : Ikan layang biru (Decapterus macarellus), MSY, hubungan panjang-berat, faktor kondisi, PPP Tumumpa
Community of Phytoplankton as Aquatic Quality Bioindicator in Teluk Melanau Waters Lemukutan Island West Kalimantan Zainal, Zainal; Kushadiwijayanto, Arie Antasari; Safitri, Ikha; Sofiana, Mega Sari Juane
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.49229

Abstract

Lemukutan Island has the potential of natural resources with a high level of diversity, including phytoplankton. Lemukutan Island has been developed as a marine tourism destination and other activities. A way to monitor water conditions is by observing physical, chemical, and biological parameters. This study aimed to determine the community structure of phytoplankton as a water quality bioindicator and analyze the environmental parameters' correlation to the abundance of phytoplankton in Teluk Melanau, Lemukutan Island. Determination of sampling stations using a purposive sampling method. Phytoplankton identification, quantity, biological index, and measurement of environmental parameters were carried out in this study. The results showed that the phytoplankton community consisted of 77 genera and Bacillariophyceae has the highest percentage contribution (90.44%). The most common genera were Cocconeis, Nitzchia, Synedra, and Chaetoceros. The abundance of phytoplankton ranged from 2-1521 ind/L. The biological index showed that Teluk Melanau was in an unpolluted condition. Environmental parameters were still in the optimal range for the growth of phytoplankton. The abundance of phytoplankton is very strongly correlated with salinity, DO, nitrate, and phosphate, strongly correlated with pH and very weakly correlated with brightness, temperature, and current velocity. Keywords: Community structure, phytoplankton, bioindicator, Lemukutan Island. Abstrak Perairan pulau Lemukutan memiliki potensi sumberdaya alam, termasuk fitoplankton. Pada saat ini, pulau Lemukutan telah dikembangkan sebagai destinasi wisata bahari dan berbagai aktivitas lainnya. Aktivitas tersebut dapat memberikan dampak terhadap kualitas perairan. Salah satu cara melakukan monitoring kondisi perairan yaitu dengan cara pengamatan parameter fisika, kimia, dan biologi. Penelitian ini bertujuan untuk mengetahui struktur komunitas fitoplankton sebagai bioindikator kualitas perairan dan menganalisis korelasi parameter lingkungan terhadap kelimpahan fitoplankton di Perairan Teluk Melanau, Pulau Lemukutan. Penentuan stasiun pengamatan dilakukan dengan menggunakan metode purposive sampling untuk mewakili rona lingkungan yang ada. Identifikasi fitoplankton, kelimpahan, indeks biologis, dan pengukuran parameter lingkungan dilakukan dalam penelitian ini. Hasil penelitian menunjukkan struktur komunitas fitoplankton terdiri dari 77 genera, dimana Bacillariophyceae merupakan komponen dengan persen kontribusi tertinggi (90,44%). Jenis yang paling banyak ditemukan yaitu Cocconeis, Nitzchia, Synedra, dan Chaetoceros. Kelimpahan fitoplankton berkisar antara 2-1521 ind/L. Indeks biologi menunjukkan bahwa perairan Teluk Melanau berada pada kondisi tidak tercemar. Parameter lingkungan masih dalam rentang optimal untuk pertumbuhan fitoplankton. Kelimpahan fitoplankton berkorelasi sangat kuat dengan salinitas, DO, nitrat, dan fosfat, berkorelasi kuat dengan pH dan berkorelasi sangat lemah dengan kecerahan, suhu, dan kecepatan arus. Kata kunci: struktur komunitas, fitoplankton, bioindikator, pulau Lemukutan.
Abundance of Microplastic in Water of Sungai Terus Desa Sungai Nibung West Kalimantan Qodriati, Tuty; Safitri, Ikha; Sofiana, Mega Sari Juane
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.49317

Abstract

The problem of plastic waste does not only occur in Indonesia but has become a global issue. The world's production of plastic waste is expected to increase every year. Plastic is persistent and takes a long time to degrade into smaller sizes. Microplastic contamination can be found in coastal and marine areas. These conditions have an impact on the balance of ecosystems, aquatic biota, and human health. As one of the coastal areas, the waters of Desa Sungai Nibung have the potential to microplastic pollution. Therefore, it is important to conduct a study on microplastics in the waters of Desa Sungai Nibung. The aims of this study were to determine the type, abundance, and microplastic polymers in water samples of Sungai Terus, Desa Sungai Nibung, West Kalimantan. The collection of water samples was carried out at four stations with two repetitions. Identification of microplastic types was carried out using a binocular microscope, and identification of microplastic polymer was conducted using FTIR spectrophotometry. The type of microplastic found consisted of fiber, film, pellet, and fragment. Fiber and film had a higher percentage than fragment and pellet. The average total abundance of microplastics was 4.83 x 103 particles/L. The types of polymers found, such as polyethylene (PE), polypropylene (PP), polystyrene (PS), and polytetrafluorethylene (PTFE). Keywords:   abundance; microplastics; polymer; Sungai Nibung Abstrak Permasalahan sampah plastik tidak hanya terjadi di Indonesia, tetapi telah menjadi isu global. Produksi sampah plastik dunia diperkirakan akan mengalami peningkatan setiap tahun. Plastik bersifat persisten dan membutuhkan waktu lama untuk terdegradasi menjadi ukuran yang lebih kecil. Cemaran mikroplastik dapat ditemukan di wilayah pesisir dan laut. Kondisi tersebut berdampak pada keseimbangan ekosistem, biota akuatik, dan kesehatan manusia. Sebagai salah satu wilayah pesisir, perairan Desa Sungai Nibung berpotensi mengalami pencemaran mikroplastik. Oleh karena itu, penting untuk dilakukan penelitian mengenai mikroplastik di perairan Desa Sungai Nibung. Penelitian ini bertujuan untuk mengetahui jenis, kelimpahan, serta polimer mikroplastik pada sampel air di Sungai Terus, Desa Sungai Nibung, Kabupaten Kubu Raya, Kalimantan Barat. Pengambilan sampel air dilakukan di empat stasiun dengan dua kali pengulangan. Identifikasi jenis mikroplastik dilakukan dengan menggunakan mikroskop, dan identifikasi jenis polimer mikroplastik dilakukan dengan menggunakan spektrofotometri FTIR. Jenis mikroplastik yang ditemukan pada sampel air di Sungai Terus, Desa Sungai Nibung terdiri dari fiber, film, pelet, dan fragmen. Jenis fiber dan film memiliki persentase lebih tinggi dibandingkan dengan jenis fragmen dan pelet. Rata-rata kelimpahan total mikroplastik sebesar 4,83 x 103 partikel/L. Jenis polimer yang ditemukan antara lain polyethylene (PE), polypropylene (PP), polystyrene (PS), dan polytetrafluorethylene (PTFE). Kata kunci:  kelimpahan; mikroplastik; polimer; Sungai Nibung
Relationship between Phytoplankton and Chlorophyll-a Abundance in the Outer Bay of Bangka Island Febriyanti, Mega; Anggraeni, Anggraeni; Akhrianti, Irma
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.50015

Abstract

Kelabat Luar Bay is located in the north of Bangka Island, which juts out into the open sea, making this bay have a number of fisheries activities, and mining activities, especially floating unconventional mines (TI) managed by the local community. The research aims to identify phytoplankton species and analyze ecological indices as well as the relationship of physical and chemical factors to phytoplankton and chlorophyll concentration in the waters of Kelabat Luar Bay. Determination of the location of this study using a purposive sampling method. Sampling was conducted perpendicular to the sea (horizontal) by setting three sampling points (replicates) at each station with a distance of 0, 1, and 2 km. Based on the results of the study, the most common phytoplankton species found were Bacillariophyceae class of 11 species with a total of 278 individuals, Cyanophyceae 1 species with a total of 2 individuals, Chrysophyceae class of 1 species with a total of 11 individuals and Dinophyceae class of 2 species with a total of 16 individuals. The type of phytoplankton that has the highest number of individuals is Rhizosolenia robusta which totals 38 individuals. Chlorophyll-a concentration ranges between 0.0634 - 0.3014 mg/L. The phytoplankton diversity index in the waters of Kelabat Luar Bay is in the medium category (1.881-2.204), the uniformity index is high (0.880-0.957) and the dominance index is low (0.116-0.172). Physical parameters of water chemistry that affect the relationship of phytoplankton and chlorophyll include temperature, pH, brightness, and salinity. Keywords: phytoplankton; chlorophyll-a; Kelabat Bay. Abstrak Teluk Kelabat Luar terletak disebelah utara Pulau Bangka yang menjorok ke laut lepas menjadikan teluk ini memiliki sejumlah aktivitas perikanan, aktivitas penambangan tepatnya Tambang Inkonvensional (TI) apung yang dikelola oleh masyarakat setempat. Penelitian bertujuan untuk mengidentifikasi jenis-jenis fitoplankton dan menganalisis indeks ekologi serta hubungan faktor fisika kimia perairan terhadap fitoplankton dan konsentrasi klorofil a di perairan Teluk Kelabat Luar. Penentuan lokasi penelitian ini menggunakan metode purposive sampling. Pengambilan sampel dilakukan secara tegak lurus kearah laut (horizontal) dengan menetapkan tiga titik sampling (ulangan) pada tiap stasiun dengan jarak 0, 1 dan 2 km. Berdasarkan hasil penelitian jenis fitoplankton yang paling banyak ditemukan adalah kelas Bacillariophyceae sebanyak 11 spesies dengan total 278 individu, Cyanophyceae 1 spesies dengan total 2 individu, kelas Chrysophyceae sebanyak 1 spesies dengan total 11 individu dan kelas Dinophyceae sebanyak 2 spesies dengan total 16 individu. Jenis fitoplankton yang memiliki jumlah individu terbanyak adalah Rhizosolenia robusta yang berjumlah 38 individu. Konsentrasi klorofil-a kisaran antara 0,0634 – 0,3014 mg/L. Indeks keanekaragaman fitoplankton di perairan Teluk Kelabat Luar termasuk dalam kategori sedang (1,881-2,204), indeks keseragaman tergolong tinggi (0,880-0,957) dan indeks dominansi tergolong rendah (0,116-0,172). Parameter fisika kimia perairan yang berpengaruh terhadap hubungan fitoplankton dan klorofil a meliputi suhu, pH, kecerahan dan salinitas. Kata kunci: fitoplankton; klorofil-a; Teluk Kelabat.
A Preliminary Studies of Fish Richness in the Tondano River Estuary Manado Bay Bataragoa, Nego E.; Pratasik, Silvester Benny; Menajang, Febry S. I.; Manginsela, Fransine B.; Dauhan, Dulce Maria; Tombi, Indra
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.50025

Abstract

The purpose of this study was to analyze the richness of fish species in the Tondano River estuary. Sampling was done for two months, in July and August 2022, new moon phase, during the low tide at 13.00-16.00 pm. Sampling used a 20-m beach seine with a cod-end part of 0.2-cm mesh and wings of 2-m height and 1.5-cm mesh. The beach seine was operated 10 times starting from the lowest tide at 13.00 pm to the tide condition at 16.00 pm. As a whole, 736 individuals were caught, consisting of 24 species and 17 families, 14 migrant species, and 10 resident species The number of fish varied from 1 to 445 individuals, in which Terapon jarbua (445 ind) was the most abundant, followed by Neovespicula depressifrons (70 ind). The dominant index (C) was 0.38 and the diversity index (H) was 1.65. The resident species were 120 individuals varying from 2 to 70 ind., and the most abundant was Neovespicula depressifrons (70 ind.). The dominant index (C) was 0.37 and the diversity index was 1.47.
The Suitability Index of Mangrove Tourism in the Coastal Area around Budo Village, Wori Sub-District, North Minahasa Regency for Marine Ecotourism Tambunan, Rose Agustin; Rumengan, Antonius Petrus; Paruntu, Carolus Paulus; Rampengan, Royke M.; Ompi, Medy; Rompas, Rizald Max
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.50039

Abstract

The purpose of this study was to analyze the tourism suitability index and the carrying capacity of the mangrove ecotourism area in Budo Village, Wori District, North Minahasa Regency. The research method used was a cruising survey method using line transects and visual method which were carried out on three transects to obtain mangrove bio-ecological parameter values, namely thickness, species, density, biota objects associated with mangroves, and sea tides. The results showed that the mangrove thickness values ​​on transects 1-3 were 157 m, 138 m, and 135 m respectively, with an average value of 143.3 m; a number of mangrove species, namely 6 species (Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, Sonneratia alba, Avicennia marina, and Nypa fruticans); mangrove density values ​​on transects 1-3, respectively 10.2 ind/100 m2, 11.8 ind/100 m2 and 6.2 ind/100 m2, with an average value of 9.4 ind/100 m2; mangrove association biota objects in transects 1-3, including fishes, shrimps, crabs, mollusks, birds and reptiles; and the average tidal value is as high as 2 m. The average value of the tourism suitability index was 54.6% with the conditionally appropriate category on all transects; and the carrying capacity of the mangrove tourism area was 116 people/day, with an operational time of 14 hours/day. Further research requires a sustainability analysis to produce efficient and effective programs for the development of mangrove ecotourism in Budo Village. Keywords: Area carrying capacity, Budo Village, Ecotourism, Tourism suitability index, Mangrove Abstrak Tujuan dari penelitian ini untuk menganalisis indeks kesesuaian wisata dan daya dukung kawasan ekowisata mangrove Desa Budo, Kecamatan Wori, Kabupaten Minahasa Utara.  Metode penelitian yang digunakan adalah metode survei jelajah dengan menggunakan line transect dan metode visual pada tiga transek untuk memperoleh nilai-nilai parameter bio-ekologi mangrove, yaitu ketebalan, jenis, kerapatan jenis, objek biota asosiasi mangrove, dan pasang surut air laut. Hasil penelitian menunjukan bahwa nilai ketebalan mangrove pada transek 1-3, masing-masing adalah 157 m, 138 m, dan 135 m, dengan nilai rata-ratanya 143,3 m; jumlah jenis mangrove 6 spesies (Rhizophora mucronata, Rhizophora apiculata, Bruguiera gymnorrhiza, Sonneratia alba, Avicennia marina dan Nypa fruticans); nilai kerapatan mangrove pada transek 1-3, masing-masing adalah 10,2 ind/100 m2, 11,8 ind/100 m2 dan 6,2 ind/100 m2, dengan nilai rata-ratanya 9,4 ind/100 m2; objek biota asosiasi mangrove pada  transek 1-3 meliputi ikan, udang, kepiting, moluska, burung, dan reptil; dan nilai rata-rata pasang surut air laut setinggi 2 m;  nilai rata-rata Indeks kesesuaian wisata sebesar 54,6 % dengan kategori “sesuai bersyarat” pada semua transek; dan daya dukung kawasan wisata mangrove Desa Budo adalah 116 orang/hari dengan waktu operasional 14 jam/hari. Penelitian selanjutnya diperlukan analisis keberlanjutan untuk menghasilkan program-program yang efisien dan efektif dalam rangka pengembangan ekowisata mangrove Desa Budo. Kata kunci: Daya dukung kawasan, Desa Budo, Ekowisata, Indeks kesesuaian wisata, Mangrove
Application Of Pes Fertilizer To The Growth Of Kappaphycus alvarezii Plantlets Wahyudi, Dzikri; Pattirane, Chrisoetanto P.; Marwah, Ayu Riyani; Sangkia, Dony Frederik
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.50619

Abstract

This study aims to determine the growth of Kappaphycus alvarezii plantlets applied with different PES fertilizers. This research was conducted at Blitok Installation, brackish water aquaculture center, Situbondo. This study began with the preparation of water as a maintenance medium, acclimatization of plantlets in the greenhouse, maintenance of plantlets in the greenhouse (plantlet cleaning, fertilization), and checking water quality. The application dose of PES fertilizer given as treatment was 15 ml, 20 ml, and 25 ml which was repeated 3 times. The rearing design used a completely randomized design (CRD) model. The results obtained showed that the average absolute weight gain of planlets from the 15 ml treatment was 0.249 g - 0.271 g, the 20 ml treatment was 0.35 g - 0.432 g, and the 25 ml treatment ranged from 0.306 g - 0.372 g. For the specific growth rate from the first to the fifth week of rearing, the 15 ml treatment ranged from 3.162-1.693, the 20 ml treatment ranged from 3.922-4.21 and the 25 ml treatment ranged from 2.899-3.904. From the results of the study, it can be concluded that the application of a PES fertilizer dosage of 20 ml gave better growth than the 15 ml and 25 ml doses. Keywords: growth, Kappaphycus alvarezii, plantlets, PES fertilizer, dosage
The Species Composition and Density of Uca spp. at Passo Mangrove Ecosystem, Ambon City Siahainenia, Laura; Retraubun, Alex S.W.
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.50732

Abstract

The violin crab Uca spp. is a benthic organism that has an ecological role in the mangrove ecosystems. Passo mangrove ecosystem is degraded which can threaten the existence of violin crabs. The study was held in May-June 2023 to analyze the species composition and density of violin crabs. The results of the study can be used as basic data for the violin crabs and their habitat management. The study was conducted at 3 stations using the purposive sampling method. Sampling of violin crabs and substrate structures at each station was carried out at the lowest low tide using the plot method randomly. Data of violin crab species were calcified based on taxon. Data of substrate are classified by presentation of each fraction. Seven species of violin crabs are found in the study namely U. annulipes, U. perplexa, U. vocans, U. mjorbergi, U. lactea, U. dussumieri, and  U. vomaris. The total density of violin crabs ranges from 8.1-29.9 ind/m2. The total highest density of violin crab is found in station 1 and lowest at station 2. Species densities differ between stations. The highest species density is U. perlexa (1.4–10.2 ind/m2), and the lowest is U. vomeris (0.0-2.1 ind/m2). Keywords: Uca spp., Mangrove,  Habitat,  Passo Abstrak Kepiting biola Uca spp. merupakan organisme bentik yang memiliki peranan ekologi pada ekosistem mangrove. Ekosistem mangrove Passo mengalami degradasi yang dapat mengancam keberadaan kepiting biola. Penelitian dilakukan pada bulan Mei - Juni 2023, yang bertujuan untuk menganalisis komposisi spesies dan kepadatan kepiting biola. Hasil penelitian dapat digunakan sebagai data dasar bagi pengelolaan kepiting biola dan habitatnya. Penelitian dilakukan pada 3 stasiun yang ditetapkan menggunakan  metode purposive sampling. Sampling kepiting biola dan struktur substrat pada tiap stasiun dilakukan saat surut terendah menggunakan metode plot yang ditempatkan secara acak. Data spesies kepiting biola dikalsifikasikan berdasarkan takson. Data fraksi substrat diklasifikasikan berdasarkan presentasi berat tiap fraksi. Selama penelitian ditemukan 7 spesies kepiting biola yaitu U. annulipes, U. perplexa, U. vocans, U. mjorbergi, U. lactea, U. dussumieri, dan Uca vomaris. Kepadatan total kepiting biola berkisar antara            8,1-29.9 ind/m2. Kepadatan total tertinggi pada stasiun 1 dan terendah pada stasiun 2. Kepadatan spesies berbeda antar stasiun penelitian. Spesies dengan kepadatan tertinggi adalah U. perlexa (1,4-10,2 ind/m2). Spesies dengan kepadatan terendap yaitu U. vomeris (0,0-2,1 ind/m2). Kata kunci: Uca spp., Mangrove,  Habitat,  Passo  
Study on Water Quality for Seaweed Cultivation in Desa Jawai Laut Sambas Regency West Kalimantan Maunala, Adrian; Safitri, Ikha; Kushadiwijayanto, Arie Antasari; Sofiana, Mega Sari Juane
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.50790

Abstract

Desa Jawai Laut is a coastal village in Sambas Regency, West Kalimantan with the potential of marine waters that can support the community's economy. One of the activities carried out is the seaweed cultivation of Eucheuma cottonii using the longline method. The development of cultivation activities can be supported by optimal water conditions to support seaweed production. The aim of this study was to analyze the water quality in Desa Jawai Laut, Sambas Regency for the development of seaweed cultivation. Determination of location sites was carried out systematically, as many as 7 stations with a distance of 500 m. The water quality index was analyzed using the CCME-WQI method. The results showed that in general, the water quality of Desa Jawai Laut was in a good category with a CWQI value of 80. Stations I and IV were in the excellent category and were recommended as locations for the development of seaweed cultivation. Keywords: Seaweed cultivation, water quality, CWQI Abstrak Desa Jawai Laut merupakan desa pesisir di Kabupaten Sambas, Kalimantan Barat dengan potensi perairan laut yang dapat menunjang perekonomian masyarakat. Salah satu aktivitas yang dilakukan adalah budidaya rumput laut Eucheuma cottonii dengan metode longline. Pengembangan kegiatan budidaya dapat ditunjang dengan adanya kondisi perairan yang optimal untuk mendukung hasil produksi rumput laut. Penelitian ini bertujuan untuk menganalisis kualitas perairan di Desa Jawai Laut, Kabupaten Sambas untuk pengembangan budidaya rumput laut. Penentuan titik lokasi dilakukan secara sistematik, sebanyak 7 stasiun dengan jarak 500 m. Indeks kualitas air dianalisis menggunakan metode CCME-WQI. Hasil penelitian menunjukkan bahwa secara umum kualitas perairan Desa Jawai Laut dalam kategori baik dengan nilai CWQI 80. Stasiun I dan IV masuk ke dalam kategori sangat baik dan direkomendasikan sebagai lokasi untuk pengembangan budidaya rumput laut.  Kata Kunci: Budidaya rumput laut, kualitas perairan, CWQI
Drone for a Cleaner Coast: Monitoring and Analysis of Marine Debris at Sindulang Beach Kumaat, Joyce; Batee, Grace Ezlin
Jurnal Ilmiah Platax Vol. 11 No. 2 (2023): ISSUE JULY-DECEMBER 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v11i2.51226

Abstract

This research aims to evaluate the capabilities of the DJI Phantom 4 Pro unmanned aerial vehicle (UAV) in monitoring the accumulation points and analyzing the characteristics of marine debris stranded at Sindulang Beach. The research methodology employed a descriptive approach with a survey method, including data collection through observation, documentation, and direct field surveys. Aerial photos were obtained from the drone, along with ground photography using a GPS map camera and the drone itself. Data analysis was conducted using Agisoft Metashape Professional and ArcGIS 10.8 software to map the distribution of marine debris accumulation points. The drone monitoring results allowed us to describe the characteristics and variations in types of marine debris, with plastic waste dominating, followed by glass, rubber, and fabric debris. The DJI Phantom 4 Pro unmanned aerial vehicle produced high-resolution aerial photos, enabling the identification of the distribution of marine debris accumulation points at Sindulang Beach and the creation of distribution maps along the Sindulang coastal area. The mapping results provide valuable information about the distribution of debris on Sindulang Beach. Based on the monitoring results using the unmanned aerial vehicle (UAV) or drone, it was found that approximately 80% of the intertidal area at Sindulang Beach was covered by debris, indicating a significant level of pollution. Keywords: Marine Debris, Unmanned Aerial Vehicle, Sindulang Abstrak Penelitian ini bertujuan untuk mengevaluasi kemampuan pesawat tanpa awak DJI Phantom 4 Pro dalam pemantauan titik kumpul sebaran marine debris serta menganalisis karakteristik marine debris yang terdampar di Pantai Sindulang. Metode penelitian yang digunakan adalah pendekatan deskriptif dengan metode survei lapangan, termasuk pengumpulan data melalui observasi, dokumentasi, dan survei langsung. Foto udara diperoleh dari drone dan pemotretan darat menggunakan kamera GPS Map serta drone. Data dianalisis menggunakan perangkat lunak Agisoft Metashape Professional dan ArcGIS 10.8 untuk memetakan sebaran titik kumpul sampah laut. Hasil pemantauan dari drone memungkinkan kita untuk mendeskripsikan karakteristik dan variasi jenis sampah laut, dengan dominasi sampah plastik diikuti oleh sampah kaca, karet, dan kain. Pesawat tanpa awak DJI Phantom 4 Pro menghasilkan foto udara dengan resolusi tinggi, yang memungkinkan identifikasi sebaran titik kumpul sampah di Pantai Sindulang serta pembuatan peta sebarannya di sepanjang pesisir laut Sindulang. Hasil pemetaan ini memberikan informasi yang berharga tentang penyebaran sampah di pantai Sindulang.  Berdasarkan hasil pemantauan menggunakan Unmanned Aerial Vehicle (UAV) / Drone, ditemukan bahwa sekitar 80% area pasang surut di pantai Sindulang telah tercakup oleh sampah, menunjukkan tingkat pencemaran yang signifikan. Kata Kunci: Marine Debris, Unmanned Aerial Vehicle, Sindulang

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