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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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Efforts To Improve Clean Water Qualitythrough The Community Self-Help Group Program(Case Study Of Ngemplak Village) Dora, Meylawati; Purwanto, Danang; Siregar, Riadi Syafutra
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.53360

Abstract

This research aims to find out, describe and analyze efforts to improve clean water quality through the Community Self-Help Group (KSM) program in Ngemplak Village, Jebres District. The method used is descriptive qualitative which focuses on the AGIL theory of Adaptation, Goal Attainment, Integration, and Latency. To improve people's living standards, the government's role is an important effort in the Community-Based Drinking Water and Sanitation Program or PAMSIMAS. There were several obstacles to the PAMSIMAS program, in the end, the village community of Ngemplak, Jebres, Surakarta 2012 attempted to develop a supporting program in the form of a KSM (Community Self-Help Group) program called Warih Tomo which aims to improve community welfare by increasing the provision of clean water sources. which is suitable for consumption. The research results show that the development of the Community Self-Help Group program is in line with Talcott Parsons' functional structural theory where the community has various institutions that are connected so that the system can run well, so the efforts made by the people of Ngemplak Village can improve the quality of clean water by improving conditions in all existing aspects and in collaboration with other aspects of society. Apart from that, stakeholders also apply the AGIL concept well in making efforts to improve the quality of clean water in the village. Keywords: AGIL, Clean Water, KSM, Pamsimas Abstrak Penelitian ini bertujuan untuk mengetahui, mendeskripsikan, serta menganalisis terkait upaya peningkatan kualitas air bersih melalui program Kelompok Swadaya Masyarakat (KSM) yang berada diKampung Ngemplak, Kecamatan Jebres . Metode yang digunakan ialah deskriptif kualitatif yang berfokus pada teori AGIL Adaptasi (Adaptation), Goal Attainment (Pencapaian Tujuan), Integration (Integrasi), Latency (Pemeliharaan Pola). Guna meningkatkan taraf hidup masyarakat, peran pemerintah menjadi upaya penting dalam Program Penyediaan Air Minum dan Sanitasi Berbasis Masyarakat atau PAMSIMAS. Adanya beberapa kendala dari program PAMSIMAS, pada akhirnya masyarakat desa Ngemplak, Jebres, Surakarta pada tahun 2012 berupaya untuk mengembangkan program pendukung berupa program KSM (Kelompok Swadaya Masyarakat) yang diberi nama Warih Tomo yang memiliki tujuannya meningkatkan kesejahteraan masyarakat dengan cara meningkatkan penyediaan sumber air bersih yang layak konsumsi. Hasil penelitian didapat bahwa pengembangan program Kelompok Swadaya Masyarakat sejalan dengan teori fungsional structural Talcott Parsons dimana masyarakat memiliki berbagai kelembagaan yang saling terhubung satu dengan yang lainnya agar sistem dapat berjalan dengan baik maka upaya yang dilakuykan masyarakar Kampung Ngemplak tersebut dapat meningkatkan kualitas air bersih adalah dengan memperbaiki keadaan di segala aspek yang ada dan bekerjasama dengan aspek masyarakat lainnya. Selain itu para stakeholder juga menerapkan konsep AGIL dengan baik dalam melakukan upaya peningkatan kualias air bersih di Desa tersebut. Kata Kunci: AGIL, Air Bersih, KSM, Pamsimas
Quality of Demersal Fish sold at Tobelo Traditional Market, North Halmahera based on pH and Organoleptic Values Akerina, Febrina Olivia; Kour, Femsy; Hibata, Yutita L. N.
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.53406

Abstract

Demersal fish resources are a type of fish whose life cycle is mostly at the bottom or around the bottom of the waters. Fishery products are food commodities that quickly spoil (deteriorate in quality) because they are influenced by the high water and nutrient content. Fish bodies are a good medium for the growth of putrefactive bacteria. Factors that influence the speed of reduction in fish freshness level are storage temperature. The application of cold chains is one way of handling that is easy to apply. This study aims to analyze the quality of demersal fish sold in one of the traditional markets in the city of Tobelo based on organoleptic and pH. The results of the analysis show that the organoleptic tests of gills, eyes, flesh, smell, and texture of fish meet the requirements of the Indonesian National Standard. The pH value of fish ranges from 6.00 - 6.65 which means fish are still in very good condition. Keywords: Demersal fish, organoleptic, pH, Tobelo Abstrak Sumberdaya ikan demersal merupakan jenis-jenis ikan yang siklus hidupnya sebagian besar berada di dasar atau sekitar dasar perairan. Hasil perikanan adalah komoditas pangan yang cepat mengalami pembusukan (kemunduran mutu) karena dipengaruhi oleh tingginya kandungan air dan nutrisi. Tubuh ikan merupakan media yang baik untuk pertumbuhan bakteri pembusuk. Faktor-faktor yang berpengaruh terhadap kecepatan penurunan tingkat kesegaran ikan adalah suhu penyimpanan. Penerapan rantai dingin merupakan salah satu cara penanganan yang mudah diterapkan. Penelitian ini bertujuan untuk menganalisis kualitas ikan demersal yang dijual di salah satu pasar tradisional di Kota Tobelo berdasarkan organoleptic dan pH. Hasil analisis menunjukkan bahwa Uji organoleptic insang, mata, daging, bau dan tekstur ikan memenuhi persyaratan Standar Nasional Indonesia. Nilai pH ikan berkisar dari 6,00 – 6,65 yang berarti ikan masih dalam kondisi sangat baik. Kata kunci : Ikan demersal, organoleptic, pH, Tobelo.
Plankton Community Structure In Halmahera Barat Coastal Zone Tamrin; Joshian Nicolas William Schaduw; Haryani Sambali; Adnan Sjaltout Wantasen; Desy Maria Helena Mantiri; Rene Charles Kepel; Winda Mercedes Mingkid; Ockstan Jurike Kalesaran; Nurhalis Wahidin; Muhammad Aris
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.53407

Abstract

Research on plankton organisms in supporting aquatic resource management is very important to do. This study aims to see the structure of the plankton community in the coastal waters of West Halmahera Regency. There were 9 sampling sites, namely the waters of Toniku (TO), Tewe (TW), Dodinga (DG), Tuada (TU), Porniti (PR), Payo (PA), Bobo (BO), Sahu (SH), and Ibu (IB). Plankton observations used the Census-SRC method. The parameters observed were abundance, diversity index, uniformity index, and dominance index. The results showed that the highest phytoplankton abundance was found in the TO area, namely 1.7 x 107 cells/m3 and the lowest was 4.1 x 106 cells/m3 in the PR area. The highest phytoplankton diversity index was found in the PR area, namely 2.075 and the lowest was 1.429 in the IB area. The highest uniformity index of phytoplankton was found in the PR area, namely 0.901 and the lowest was 0.624 in the BO and DG areas. The highest phytoplankton dominance index was found in the IB area, namely 0.350 and the lowest was 0.138 in the PR area. The highest zooplankton abundance was found in the DG area at 2.0 x 106 cells/m3 and the lowest was 3.3 x 105 cells/m3 in the IB area. The highest zooplankton diversity index was found in the TU area, namely 1.981 and the lowest was 1.516 in the IB area. The highest uniformity index of zooplankton was found in the IB area, namely 0.942 and the lowest was 0.761 in the DG area. The highest zooplankton dominance index was found in the BO area, namely 0.266 and the lowest was 0.167 in the TU area. The conclusion of this study revealed that the most common type of plankton found was Bacillariophyceae. While the diversity value shows moderate diversity, the uniformity value shows a high level of uniformity, and the dominance value shows low-moderate dominance. Keywords: Diversity index; Uniformity index; Dominance index; Abundance; Plankton Abstrak Penelitian tentang organisme plankton dalam mendukung pengelolaan sumberdaya perairan sangat penting untuk dilakukan. Penelitian ini bertujuan melihat struktur komunitas plankton perairan kawasan pesisir Kabupaten Halmahera Barat. Terdapat 9 lokasi sampling, yaitu perairan Toniku (TO), Tewe (TW), Dodinga (DG), Tuada (TU), Porniti (PR), Payo (PA), Bobo (BO), Sahu (SH), dan Ibu (IB). Pengamatan plankton menggunkan metode Sensus-SRC. Parameter yang diamati adalah kelimpahan, indeks keragaman, indeks keseragaman, dan indeks dominansi. Hasil penelitian menunjukan kelimpahan fitoplankton tertinggi terdapat di kawasan TO yaitu 1,7 x 107 Sel/m3 dan terendah 4,1 x 106 Sel/m3 di kawasan PR. Indeks keragaman fitoplankton tertinggi terdapat di kawasan PR yaitu 2,075 dan terendah 1,429 di kawasan IB. Indeks keseragaman tertinggi fitoplankton terdapat di kawasan PR yaitu 0,901 dan terendah 0,624 di kawasan BO dan DG. Semetara indeks dominansi fitoplankton tertinggi terdapat di kawasan IB yaitu 0,350 dan terendah 0,138 di kawasan PR. Kelimpahan zooplankton tertinggi terdapat di kawasan DG yaitu 2,0 x 106 Sel/m3 dan terendah 3,3 x 105 Sel/m3 di kawasan IB. Indeks keragaman zooplankton tertinggi terdapat di kawasan TU yaitu 1,981 dan terendah 1,516 di kawasan IB. Indeks keseragaman tertinggi zooplankton terdapat di kawasan IB yaitu 0,942 dan terendah 0,761 di kawasan DG. Semetara indeks dominansi zooplankton tertinggi terdapat di kawasan BO yaitu 0,266 dan terendah 0,167 di kawasan TU. Kesimpulan penelitian ini mengungkapkan jenis plankton yang paling banyak ditemukan adalah Bacillariophyceae. Sementara nilai keragaman menunjukkan karagaman sedang, nilai keseragaman menunjukkan tingkat kesergaman tinggi, dan nilai dominasi menunjukkan dominansi rendah – sedang. Kata kunci: Indeks keragaman; Indeks keseragaman; Indeks dominansi; Kelimpahan; Plankton.
Identification of Types and Weight of Marine Debris in Each Season at Ancol Gen Beach, Pesawahan, Teluk Betung Selatan, Bandar Lampung Kurnia, Arda; Maharani, Henni Wijayanti; Delis, Putu Cinthia
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.53553

Abstract

The Ancol Gen Beach is one of the beaches located in the waters of Lampung Bay, offering a variety of activities in the surrounding aquatic environment. These activities have led to an increase in pollution, particularly in the form of marine debris. The distribution of non-submerged marine debris tends to drift and ultimately ends up along the shoreline. This research was conducted from December 2021 to June 2022 at Ancol Gen Beach, Pesawahan, Teluk Betung Selatan, Bandar Lampung. The study aimed to classify and identify the types and weights of marine debris most commonly found at Ancol Gen Beach. Sampling of marine debris was carried out using the line transect method spanning the coastline. The research results revealed that the dominant type of marine debris was single-use plastic, followed by recyclable plastics, textiles, rubber, paper, glass, wood, metal, and hazardous waste (B3). The highest density of marine debris occurred during the rainy season, with a count of 50,020 pcs/m² and a weight of 160,525 g/m². In contrast, the lowest density of marine debris was observed during the dry season, with 15,450 pcs/m² and a weight of 53,250 g/m². The accumulation of macro marine debris along Ancol Gen Beach is suspected to be transported by surface currents and river flows in the vicinity of the shoreline. Keywords: Ancol Gen, Macro-sized, Marine debris, and Seasson. Abstrak Pantai Ancol Gen merupakan salah satu pantai yang berada di perairan Teluk Lampung yang memiliki beragam aktivitas di sekitar perairan tersebut. Aktivitas-aktivitas yang ada menyebabkan peningkatan pencemaran salah satunya berupa sampah laut. Distribusi sampah laut yang tidak tenggelam ke dasar perairan akan hanyut dan berakhir di sepanjang pantai. Penelitian ini dilaksanakan pada bulan Desember 2021- Juni 2022 dan bertempat di Pantai Ancol Gen, Pesawahan, Teluk Betung Selatan, Bandar Lampung. Penelitian bertujuan untuk mengklasifikasi dan mengidentifikasi jenis-jenis serta berat sampah laut yang paling banyak ditemukan di Pantai Ancol Gen. Pengambilan sampel sampah laut menggunakan metode line transek yang membentang sepanjang pantai. Hasil penelitian menunjukkan bahwa jenis sampah laut didominasi oleh sampah jenis plastik sekali pakai, kemudian diikuti oleh sampah plastik daur ulang, tekstil, karet, kertas, kaca, kayu, logam, dan sampah B3. Kepadatan jumlah sampah laut paling tinggi berada di musim hujan sebanyak 50.020 pcs/ m² dan berat sampah laut sebesar 160.525 g/m², sedangkan kepadatan jumlah sampah laut terendah di musim kemarau sebanyak 15.450 pcs/m² dan berat sampah laut sebesar 53.250 g/m². Akumulasi sampah laut makro yang tersebar di sepanjang Pantai Ancol Gen diduga terbawa oleh arus permukaan laut dan aliran sungai yang berada di sekitar pantai tersebut. Kata Kunci : sampah laut, makro, musim, pantai Ancol Gen.
Checklist of Mangrove Snails (Mollusca: Gastropoda) in the Coastal of Sungai Nyirih Village West Kalimantan Safitri, Ikha; Sofiana, Mega Sari Juane; Maulana, Adrian
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.53944

Abstract

Desa Sungai Nyirih is located in Jawai District, Sambas Regency, West Kalimantan. This village is a coastal with the potential for mangrove forests and a diversity of biota such as snail (mollusks: gastropods). Snails are one of the biota that are consumed in various ways by the local community. Gastropods play an important role in the food chain. Apart from that, this biota is a bioindicator of the quality of the waters. Data collection on snail species in the mangrove ecosystem of Desa Sungai Nyirih Village is not yet available. Therefore, this research aims to identify the types of snails (Gastropoda) found in Desa Sungai Nyirih, Sambas. Snail samples were collected using an exploration method throughout the mangrove ecosystem. The species of sample was identified. They were Cassidula aurisfelis, Cassidula nucleus, Pirenella cingulata, Cerithidea obtusa, Ellobium sp., Neripteron violaceum, dan Littoraria melastonoma, Littoraria albicans, and Littoraria scabra. Keywords: gastropods, Cassidula, Pirenella, Cerithidea, Neripteron, Ellobium, Littoraria Abstrak Desa Sungai Nyirih secara adminitrasi terletak di Kecamatan Jawai, Kabupaten Sambas, Kalimantan Barat. Desa ini merupakan salah satu desa pesisir dengan potensi hutan mangrove dan keanekaragaman biotanya, salah satunya adalah keong (moluska: gastropoda). Keong adalah salah satu biota yang dikonsumsi dengan pengolahan yang beraneka ragam oleh masyarakat setempat. Gastropoda berperan penting dalam rantai makanan. Selain itu, biota ini merupakan bioindikator kualitas suatu perairan. Pendataan jenis keong di ekosisten mangrove Desa Sungai Nyirih belum tersedia. Oleh karena itu, penelitian ini bertujuan untuk mengidentifikasi jenis keong (Gastropoda) yang ditemukan pada Desa Sungai Nyirih, Sambas. Pengumpulan sampel keong dilakukan dengan metode eksplorasi di seluruh ekosistem mangrove. Sampel kemudian diidentifikasi jenisnya. Genus yang ditemukan adalah Cassidula aurisfelis, Cassidula nucleus, Pirenella cingulata, Cerithidea obtusa, Ellobium sp., Neripteron violaceum, dan Littoraria melastonoma, Littoraria albicans, dan Littoraria scabra. Kata kunci: gastropoda, Cassidula, Pirenella, Cerithidea, Neripteron, Ellobium, Littoraria
Mapping Benthic Habitat Distribution and Coral Reef Health Index in Ternate Island and Tidore Island, North Maluku Patty, Simon I.; Souhoka, Jemmy; Makatipu, Petrus C.; Rizqi, Marenda Pandu
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.54054

Abstract

Coral reefs are underwater marine organisms whose coverage can be identified using remote sensing technology utilizing satellite imagery. The benthic habitats classification and coral reef health index analysis were carried out on the Ternate and Tidore islands in June 2021. This study aims to map the distribution of benthic habitat as well as calculate the value of the coral reef health index. The processing of satellite imagery data from Landsat 8, using ENVI 5.3 and ArcGIS 10.1 software. The "depth invariant index" algorithm is used in the image sharpening process (Lyzenga, 1981). The maximum likelihood classification technique is used to identify substrate type, with a confusion matrix used to test its accuracy. The coral reef health index assessment is based on the condition of live coral cover, resilience level, and reef fish biomass. The results from water column image classification showed that there were four classes of habitat, i.e. coral, seagrass, sand, and rubble with an overall accuracy value of 85.86% and kappa coefficient of 0.80605. The total area of classified coral reefs is 1152.85 hectares. The coral reef health index values ranged from 2 to 8 with an average of 5, which translates to a moderate percentage of live coral cover, high resilience, and low fish biomass. Keywords: coral reefs, benthic habitat, health index, Landsat 8 images.   Abstrak Terumbu karang merupakan objek tutupan bawah air laut yang dapat diidentifikasi menggunakan teknologi penginderaan jauh yakni memanfaatkan citra satelit. Klasifikasi habitat bentik dan analisis indeks kesehatan terumbu karang telah dilakukan di pulau Ternate dan pulau Tidore pada bulan Juni 2021. Penelitian ini bertujuan untuk memetakan sebaran habitat bentik serta mengetahui nilai indeks kesehatan terumbu karang. Pengolahan data citra Landsat 8 dengan perangkat lunak ENVI 5.3 dan ArcGIS 10.1. Proses penajaman citra menggunakan algoritma “depth invariant index” (Lyzenga, 1981). Teknik klasifikasi maximum likelihood digunakan untuk identifikasi objek dasar perairan dan uji akurasi menggunakan confusion matrix. Penilaian indeks kesehatan terumbu karang berdasarkan kondisi tutupan karang hidup, tingkat resiliensi dan biomassa ikan karang. Hasil klasifikasi citra kolom air mendapatkan empat kelas habitat yaitu karang, lamun, pasir dan pecahan karang mati (rubble) dengan nilai akurasi keseluruhan sebesar 85,86 % dan koefisien kappa sebesar 0,80605. Total luasan area terumbu karang hasil klasifikasi adalah 1152,85 ha. Nilai indeks kesehatan terumbu karang berkisar antara 2 sampai 8, dengan rata-rata 5 yang menggambarkan persentase tutupan karang hidup sedang, tingkat resiliensi tinggi dan biomassa ikan rendah. Kata kunci: terumbu karang, habitat bentik, indeks kesehatan, citra Landsat 8.
The Fish Community Of The Sario River Estuary In Manado City Dauhan, Dulce Maria; Rondonuwu, Ari B.; Rangan, Jety K.; Lumingas, Lawrence J. L.; M.Si, Fransine B.; Lohoo, Anneke V.
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.54104

Abstract

The purpose of this research was to determine the fish species composition, relative abundance, and community structure, including ecological indices. The methods used in this study were general field survey methods and fish capture methods using the “swept area” method (Sparre & Venema, 1998). Data were collected based on the time of collection using beach seine gear. The research was conducted in several stages, including fish catching in the field, data analysis, and discussion. The results of this study showed that there were 13 species from 11 families of fish in the Sario River Estuary. The total population obtained in June and July was 292 individuals. 215 individuals were caught in June and 77 individuals were caught in July. The highest composition in both months was the species Ambassis urotaenia, while the lowest number was several species, namely Caranx ignobilis, Osteomugil cunnesius, and Zenarchopterus buffonis. The highest relative abundance in both months was the species Ambassis urotaenia (73.49% and 66.23%). The lowest relative abundance was Caranx ignobilis, Tylosurus crocodilus, and Zenarchopterus buffonis with values of (1.30%). Sillago sihama, Chelonodontops patoca (0.93%). The results of the study showed the community structure in Sario River Estuary in June and July (H' = 0.91 – 0,97, J' = 0.44 – 0.54, D = 0.49 -0.57). Keywords: Fish, Sario River Estuary, Relative Abundance, Community Structure Abstrak Penelitian ini bertujuan untuk mengetahui komposisi jenis ikan, kelimpahan relatif dan struktur komunitas yang meliputi indeks ekologi.Metode yang digunakan dalam penelitian ini yaitu metode umum survei lapangan dan metode penangkapan ikan menggunakan metode “swept area” (Sparre & Venema, 1998). Pengambilan data dilakukan berdasarkan waktu pengambilan menggunakan alat tangkap pukat pantai (beach seine). Penelitian ini dilakukan dengan beberapa tahapan yaitu penangkapan ikan di lapangan yang akan menjadi data, analisis data serta pembahasan.Hasil penelitian ini menunjukkan terdapat 13 spesies dari 11 famili ikan di Muara Sungai Sario. Dengan total populasi yang didapat pada bulan Juni dan sbulan Juli 292 individu. 215 individu tertangkap pada bulan Juni dan 77 individu tertangkap pada bulan Juli. Komposisi tertinggi pada kedua bulan adalah jenis Ambassis urotaenia, sedangkan jumlah terendah ada beberapa jenis yaitu Caranx ignobilis, Osteomugil cunnesius, Zenarchopterus buffonis. Kelimpahan relatif tertinggi pada kedua bulan adalah jenis Ambassis urotaenia (73,49% dan 66,23%). Sedangkan kelimpahan relatif terendah yaitu Caranx ignobilis, Tylosurus crocodilus dan Zenarchopterus buffonis dengan nilai (1,30%). Sillago sihama, Chelonodontops patoca (0,93%). Hasil penelitian menujukkan struktur komunitas di Muara Sungai Sario pada bulan Juni dan bulan Juli (H' = 0,91 – 0,97, J' = 0,44 – 0,54, D = 0,49 -0,57). Kata kunci: Ikan, Muara Sungai Sario, Kelimpahan Relative, Struktur Komunitas.
Study of Sea Water Quality in Malalayang Beach Walk Area Windarto, Firhansyah C.; Rumampuk, Natalie D.C.; Mamuaja, Jane M.; Rampengan, Royke M.; Schaduw, Joshian N. W.; Manengkey , Hermanto W.K.
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.54144

Abstract

The city of Manado is famous for its fishery products, but human activities also cause problems of seawater pollution and a decrease in water quality. This study aims to examine the water quality around Malalayang Beach Walk in Manado City with a focus on physical and chemical parameters. The study was conducted at five stations with three repetitions at high and low tide. The results showed that the water temperature was relatively homogeneous, with a range of 30.02-30.29oC at high tide and 30.39-30.81oC at low tide. Turbidity is in the range of 20.1-22.5 NTU at high tide and 16.0-21.7 NTU at low tide, exceeding the quality standard. DO values conform to quality standards (5.46-8.07 mg/L at high tide and 5.69-6.32 mg/L at low tide), but TDS reaches 23900-28600 mg. L at high tide and 26600-28600 mg/L at low tide, far from the common values of 1500 mg/L. Salinity values range from 25.02-30.29 ppt at high tide and 30.35-30.50 ppt at low tide. Pollution and degradation need to be better controlled and monitored. Keywords: Water quality, Temperature, Turbidity, Dissolved oxygen (DO), Total dissolved solids (TDS), Salinity. Abstrak Kota Manado terkenal dengan hasil perikanannya, namun aktivitas manusia juga menyebabkan masalah pencemaran air laut dan penurunan kualitas perairan. Penelitian ini bertujuan untuk mengkaji kualitas perairan di sekitar Malalayang Beach Walk Kota Manado dengan fokus pada parameter fisika dan kimia. Penelitian dilakukan di lima stasiun dengan tiga kali pengulangan pada saat air pasang dan surut. Hasil penelitian menunjukkan bahwa suhu perairan relatif homogen, dengan rentang nilai 30,02-30,29oC saat pasang dan 30,39-30,81oC saat surut Kekeruhan berada pada rentang 20,1-22,5 NTU saat pasang dan 16,0-21,7 NTU saat surut, melebihi standar baku mutu. Nilai DO sesuai dengan standar baku mutu (5,46-8,07 mg/L saat pasang dan 5,69-6,32 mg/L saat surut), namun TDS mencapai 23900-28600 mg/L saat pasang dan 26600-28600 mg/L saat surut, jauh dari nilai umum 1500 mg/L. Nilai salinitas berkisar antara 25,02-30,29 ppt saat pasang dan 30,35-30,50 ppt saat surut. Pencemaran dan penurunan kualitas perlu dikendalikan dan dipantau secara lebih baik. Kata Kunci: Kualitas air, Suhu, Kekeruhan, Dissolved oxygen (DO), Total dissolved solids
The Fish Community Of The Tondano River Estuary In Manado City: Dei, Katrin Dowena; Rondonuwu, Ari B.; Wantasen, Adnan S.; Mandagi, Stephanus; Mantiri, Rose O. S. E.; Kambey, Alex D.
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.54156

Abstract

This study was conducted to determine the relative abundance, species composition, relative abundance, and structure of fish communities. The data collection method used was the “Swept area” method. Sampling was conducted twice. The first sampling was conducted on June 17, 2023, and the second sampling was conducted on July 4, 2023, at the Tondano River estuary. Data collection was conducted at low tide. The data analysis used was relative abundance, diversity index, evenness index, and dominance index. The results of this study showed that the fish species composition in the Tondano River estuary consisted of 15 families, 15 genera, and 18 species with a total of 288 individuals. Between the two observed months, June and July, the number of species was higher in June. Based on the data analysis, the highest relative abundance in the Tondano River estuary was in the June phase, namely the Ambassis urotaenia species with a value of 31.5%. The diversity of fish species in the June and July phases was classified as quite high, considering the relatively high evenness index and low dominance index. Keywords: Tondano River Estuary, Relative Abundance, Diversity Index. Abstrak Penelitian ini dilakukan dengan tujuan untuk mengetahui kelimpahan relatif, komposisi spesies ikan, kelimpahan relatif dan struktur komunitas ikan. Metode pengambilan data ikan menggunakan metode metode “Swept area”. Pengambilan sampel dilakukan sebanyak 2 kali. Pengambilan sampel pertama dilakukan pada bulan juni tanggal 17 juni 2023 dan pengambilan sampel kedua dilakukan pada bulan juli tanggal 4 juli 2023 yang berlokasi di Muara Sungai Tondano. Pengambilan data dilakukan pada waktu surut. Analisis data yang digunakan adalah kelimpahan relatif, indeks keanekaragaman, indeks kemerataan, dan indeks dominansi. Hasil penelitian ini menunjukkan komposisi jenis ikan di Muara Sungai Tondano terdiri 15 famili, 15 genus dan 18 spesies dengan total 288 individu. Diantara kedua fase bulan yang diamati, yaitu bulan Juni dan bulan Juli, jumlah spesies lebih banyak ditemukan pada Juni. Berdasarkan hasil analisis data kelimpahan relatif tertinggi di Muara Sungai Tondano ada pada fase Juni yaitu spesies Ambassis urotaenia dengan nilai 31.5 %. Keanekaragaman jenis ikan pada fase bulan Juni dan Juli tergolong cukup tinggi dengan memperhatikan indeks kemerataan yang cukup tinggi dan indeks dominansi yang rendah. Kata kunci: Muara Sungai Tondano, Kelimpahan Relatif, Indeks Keanekaragaman.
Proximate and Macromineral Content of Gastropods in the Mangrove Area of Desa Bakau Sambas Regency Warsidah; Safitri, Ikha; Sofiana, Mega Sari Juane; Oktavia
Jurnal Ilmiah Platax Vol. 12 No. 1 (2024): ISSUE JANUARY-JUNE 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.v12i1.54376

Abstract

Gastropods are the largest class of the phylum mollusks, with 75,000 identified species. Gastropods are widely distributed in freshwater, marine waters, and mangrove ecosystems. Gastropods are a fishery commodity with an important economic value containing high protein (36-70.8%) and low fat (0.02-1.50%). This biota has vitamins, essential minerals, omega-3, and omega-6. This research aimed to determine the proximate content (protein, fat, water, ash, and carbohydrates) and macrominerals (Na, K, Mg, Ca, and P) in gastropods found in Bakau Village, Sambas Regency, West Kalimantan. The gastropods found were Ellobium, Cerithidea, and Pirenella. Fifty individuals were taken for proximate analysis. Moisture and ash content were determined by the gravimetric method. Total protein levels were analyzed by the Kjedahl method. The fat content was determined by the Soxhlet method, and the carbohydrate content by the by difference method. Atomic Absorption Spectrophotometer determined mineral macro. The proximate content of mangrove gastropods in Bakau Village is high in protein (48.06–54.62%) and low in fat (1.31–7.40%). The most elevated protein was 54.62 in Ellobium and Pirenella, with the lowest fat being 1.31%. The macro mineral content in gastropods is Ca (14.91-91.48 mg/kg), Mg (13.16-21.74 mg/kg), Na (8.19-20.62 mg/kg), K (13.07-17.33 mg/kg), and P (0.66-0.71 mg/kg). The highest mineral content was shown by the genus Pirenella (91.48 mg/kg) Ca. Keywords: gastropod, macromineral, mangrove, proximate. Abstrak Gastropoda adalah kelas terbesar dari filum moluska dengan 75.000 jenis yang telah teridentifikasi. Gastropoda terdistribusi luas di perairan tawar, perairan laut, dan ekosistem mangrove.  Gastropoda merupakan salah satu komoditas perikanan dengan nilai ekonomis penting yang mengandung protein tinggi (36-70,8%) dan lemak yang rendah (0,02-1,50%). Biota ini juga memiliki vitamin, mineral esensial, omega-3 dan omega-6. Penelitian ini bertujuan untuk mengetahui kandungan proksimat (protein, lemak, air, abu, dan karbohidrat) serta makromineral (Na, K, Mg, Ca, dan P) pada gastropoda yang ditemukan di Desa Bakau, Kabupaten Sambas, Kalimantan Barat. Gastropoda yang ditemukan pada penelitian ini adalah Ellobium, Cerithidea, dan Pirenella. Setiap jenis dari gastropoda, masing-masing diambil sebanyak 50 individu untuk dilakukan analisis. Kadar air dan abu ditentukan dengan metode gravimetri. Kadar total protein dianalisis dengan metode Kjedahl. Kadar lemak ditentukan dengan metode soxhlet dan kadar karbohidrat dengan metode by difference. Makro mineral ditentukan dengan Spektrofotometer Serapan Atom. Kandungan proksimat dari jenis gastropoda mangrove Desa Bakau adalah tinggi protein (48,06–54,62%), rendah lemak (1,31–7,40%). Protein tertinggi 54,62 pada Ellobium dan Pirenella dengan lemak terendah 1,31%. Kandungan makro mineral pada gastropoda adalah Ca (14,91-91,48 mg/kg), Mg (13,16-21,74 mg/kg), Na (8,19-20,62 mg/kg), K (13,07-17,33 mg/kg), dan P (0,66-0,71 mg/kg). Kandungan mineral tertinggi ditunjukkan oleh genus Pirenella (91,48 mg/kg) Ca. Kata kunci: gastropoda, makromineral, mangrove, proksimat.

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