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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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Analysis Of Particle Content In Kappaphyccus alvarezii Seaweed In The Waters Of Arakan Village Using Scan Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM-EDX) Tilaar, Sandra; Wullur, Stenly; Angkouw, Esther
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.v12i1.51565

Abstract

Kappaphycus alvarezii seaweed is widely cultivated in Indonesia and has important economic value. Nevertheless, this seaweed is easily attacked by diseases. This study was to determine the ice-ice triggers in seaweed farming locations. This research study was conducted at Arakan Village, South Minahasa, North Sulawesi. We performed the bacteria isolation on the infected thallus of Kappaphycus alvarezii and found Staphylococcus arlettae caused the infection. Staphylococcus aureus used to be found on the skin and mucous membranes of healthy humans, while  Staphylococcus epidermis inhabits only the skin of healthy humans. Approximately 30% of the normal healthy population was affected by Staphylococcus aureus as it asymptomatically colonizes human hosts. How this Staphylococcus arlettae (mainly found in pork farms) infected Kappaphycus alvarezii which is in a high salinity environment requires an in-depth study. We completed the experiment by using Scan Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM-EDX), analysis on infected thallus Kappaphycus alvarezii, and a series of bacteria isolation to observe the morphology and the element contents of Staphylococcus arlettae bacteria has successfully attached to the surface of Kappaphycus alvarezii and caused an infection.  This proves that environmental changes have stimulated pathogenic bacteria Staphylococcus arlettae in the area where Kappaphycus alvarezii is cultivated. The mechanism of biosorption by microbes that can live in environments that are contaminated with Pb metal is active uptake. This mechanism occurs simultaneously in line with the consumption of metal ions for the growth of microorganisms. Staphylococcus arlettae are resistant to heavy metals due to the ability to detoxify the influence of heavy metals in the presence of protein or granular material. From the results of the study using SEM-EDX of algae and bacteria Staphylococcus arlettae, it can be concluded that the content of the particle of metal in thallus triggers bacteria to live on the seaweed as an energy source. Keywords: Bacteria, disease, infection, Kappaphycus alvarezii, seaweed, Staphylococcus arlettae
Strategy for Sustainable Use of Mangrove Ecosystem In Coastal Tatengesan, Southeast Minahasa Regency Pamungkas, Yogo; Paruntu, Carolus Paulus; Rumengan, Antonius Petrus; Manembu, Indri Shelovita; Sondak, Calvyn Fredrik Aldus; Ginting, Elvy Like
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.v12i1.51570

Abstract

The mangrove ecosystem area in the coastal area of Tatengesan Village, Pusomaen District, Southeast Minahasa Regency has been developed as a mangrove ecotourism area which has been managed by Village-Owned Enterprises (BUMD) since January 2019 with assistance from the Mandiri Rural National Community Empowerment Program (PNPM) team. The development of this mangrove ecotourism activity was stopped for a moment due to the impact of the COVID-19 pandemic, but currently, COVID-19 cases are considered endemic so this mangrove ecotourism activity will be developed again. This research aims to formulate some strategies for the sustainable use of the mangrove ecosystem on the Tatengesan coast, Southeast Minahasa Regency. This research lasted for 5 months, from September 2022 - February 2023. This research used descriptive qualitative methods with survey technique, i.e., in-depth direct interviews with resource persons (respondents). The formulation of priority strategies (key success factors) was analyzed using S.W.O.T and strategy choice analysis. This research produced 9 (nine) priority strategies as academic texts, which can be recommended to governments related to the marine and fisheries sector as elements of public policy-making officials. Keywords: Tatengesan village, mangrove ecotourism, sustainable use, priority strategies. Abstrak Kawasan ekosistem mangrove di wilayah pesisir Desa Tatengesan, Kecamatan Pusomaen, Kabupaten Minahasa Tenggara dikembangkan sebagai kawasan ekowisata mangrove yang dikelola oleh Badan Usaha Milik Desa (BUMD) sejak Januari 2019 dengan pendampingan oleh tim Program Nasional Pemberdayaan Masyarakat (PNPM) Mandiri Perdesaan.  Kegiatan ekowisata mangrove ini pengembangannya terhenti sejenak dikarenakan adanya dampak pandemi Covid-19, namun saat ini kasus Covid-19 sudah dianggap endemi sehingga kegiatan ekowisata mangrove ini akan dikembangkan kembali.  Tujuan penelitian ini yaitu merumuskan strategi pemanfaatan berkelanjutan ekosistem mangrove ke arah berkelanjutan di pesisir Tatengesan Kabupaten Minahasa Tenggara.  Riset ini berlangsung selama 5 bulan, dari September 2022 - Februari 2023.  Riset ini menggunakan metode kualitatif deskriptif dengan teknik survei, yaitu wawancara langsung secara mendalam (in-depth interview) kepada narasumber (responden).  Perumusan strategi prioritas (faktor kunci keberhasilan) di analisis dengan menggunakan S.W.O.T dan analisis pilihan strategi.  Penelitian ini menghasilkan 9 (sembilan) strategi prioritas sebagai naskah akademik, yang dapat direkomendasikan kepada pemerintah terkait pada sektor kelautan dan perikanan sebagai unsur pejabat pembuat kebijakan publik. Kata kunci: Desa Tatengesan, ekowisata mangrove, pemanfaatan berkelanjutan, strategi prioritas.
Diversity Of Types And Abundance Of Algae, In Meras Waters Of North Sulawesi, Photosynthesis Pigments And Cell Structure Kumampung, Deislie Roxmerie H; Lumoindong, Frans; Angkouw, Ester Dellayani
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.v12i1.51672

Abstract

Research on the diversity of algae types and their abundance in Meras waters has been carried out using structured line transect sampling and quadrant placement methods. The result is a diversity of algae types with a Shannon index (H') above 1.75. This shows that the diversity of algae types is moderate where water conditions are still good enough for algae growth. This is reinforced by the results of analysis of the structure of algal cells using TEM which found the presence of Floridian starch as evidence of the photosynthesis process taking place in these waters. When algae to grow and develop will carry out the process of photosynthesis. There were 9 species of algae found spread across 3 classes, namely 3 species of Chlorophyceae, 4 species of Phaeophyceae, and 3 species of Rhodophyceae. The results of the analysis of species abundance in these waters show that the algae species Gracilaria edulis is the most abundant, namely 7.6 individuals/m2, while the relative abundance is 0.28. The results of the analysis of photosynthetic pigments in the algae Gracilaria edulis were chlorophyll a, namely 359.335 µg, chlorophyll d 47.385 µg, and 1627.75 µg of carotene pigment. This algae pigment can be used as a raw material in the food (nutrification) and pharmaceutical industries. Keywords: Diversity of algae types, pigments, and cell structure Abstrak Penelitian Keanekaragaman jenis alga dan kelimpahannya  di perairan Meras telah dilakukan  dengan metode  pengambilan sampel line transek dan peletakan kuadran secara terstruktur. Hasilnya adalah keanekaragaman jenis alga dengan index Shannon (H’) berada di atas 1,75 Hal ini menunjukkan bahwa keanekaragaman jenis alga sedang dimana kondisi perairan masih cukup baik untuk pertumbuhan alga. Hal ini diperkuat dengan hasil analisis struktur sel alga menggunakan TEM ditemukan adanya  floridean starch bukti adanya berlangsung proses fotosintesis di perairan tersebut. Dimana alga untuk tumbuh dan berkembang akan melakukan  proses fotosintesis. Spesies alga yang ditemukan sebanyak 9 spesies yang tersebar dalam 3 kelas yaitu Chlorophyceae 3 spesies, Phaeophyceae  4 spesies dan 3 spesies Rhodophyceae. Hasil analisis kelimpahan spesies di perairan tersebut  menunjukkan bahwa spesies alga Gracilaria edulis paling melimpah yaitu 7,6 individu/m2 sedangkan kelimpahan relatifnya adalah 0,28. Hasil analisis pigmen fotosintesis  pada alga Gracilaria edulis adalah klorofil a yaitu 359,335 µg,  klorofil d 47,385 µg dan 1627,75 µg pigmen karoten. Pigmen alga ini dapat dimanfaatkan sebagai bahan baku dalam industri makanan (nutrifikasi) dan farmasetika. Kata kunci : Keanekaragaman jenis alga, pigmen, dan struktur sel.
Nutritional Value Composition Of Lamun Fruit Enhalus Acoroides From Samboang Beach, Bulukumba District, Sulawesi Selatan Minsas, Sukal; Warsidah; Irwan
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.v12i1.51961

Abstract

As the main producer, seagrass leaves are the main food for several marine animals such as turtles and dugongs, while seagrass fruit which contains soft seeds can be consumed as food for humans, but it is not very popular and there is not much information regarding the nutritional content of seagrass fruit. One species of seagrass that is often found in the waters of Samboang Beach, Bulukumba Regency is the Enhalus acoroides species. This research aims to determine the proximate and essential metal content of Enhalus acoroides seagrass fruit taken from Samboang coastal waters, Bulukumba Regency, South Sulawesi. Determination of proximates, namely proteins, was carried out using the Kjeldahl method, fats using the extraction method with n-hexane solvent and essential metals, and while determination of essential metal content using the atomic absorption spectrophotometry method. The results of this research show that the water content is 87%, the ash content is 0.76%, the protein content is 1.2%, the fat content is 0.66% and the carbohydrate content is 10.38%. The essential metal test results show zinc (Zn) levels of 5.32 ppm, iron (Fe) of 7.2 ppm, and cobalt (Co) of 0.11 ppm. Keywords: Enhalus acoroides, proximate, protein, Samboang beach, essential Abstrak Sebagai produsen utama, daun lamun merupakan makanan utama dari beberapa hewan laut seperti penyu dan dugong sedangkan buah lamun yang mengandung biji yang lunak dapat dikonsumsi sebagai pangan untuk manusia, tetapi belum begitu populer dan informasi terkait kandungan gizi dari buah lamun tersebut belum banyak ditemukan. Salah satu spesies lamun yang banyak ditemukan di perairan Pantai Samboang Kabupaten Bulukumba adalah dari jenis Enhalus acoroides. Penelitian ini bertujuan untuk menentukan kandungan proksimat dan logam esensial dari buah lamun Enhalus acoroides yang diambil dari perairan pantai Samboang Kabupaten Bulukumba Sulawesi Selatan. Penentuan proksimat yaitu protein dilakukan dengan metode kjeldahl, lemak menggunakan metode ekstraksi dengan pelarut n-heksan dan logam esensial, sedangkan penentuan kandungan logam esensial dengan menggunakan metode spektrofotometri serapan atom. Dari hasil penelitian ini menunjukkan kadar air sebesar 87%, kadar abu sebesar 0.76%, kadar  protein sebesar 1.2 %, kadar lemak sebesar 0.66% dan kadar karbohidrat sebesar  10.38 %. Pada hasil pengujian logam esensial menunjukkan kadar logam zink (Zn) sebesar 5.32 ppm, besi (Fe) sebesar 7.2 ppm dan kobalt (Co) sebesar 0.11 ppm Keywords: Enhalus acoroides, proksimat, protein, Samboang beach, essensial
Estimation of Biomass and Below Ground Carbon in the Lepar Island Mangrove Ecosystem, South Bangka Regency Okto Supratman; Farhaby, Arthur Muhammad; Aprilita, Desi; Henri, Henri; Supratman, Okto; Adi, Wahyu; ferizal, Jemi
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.v12i1.52047

Abstract

Mangrove ecosystems are similar to other forest ecosystems in that they play a role in absorbing CO2 from the atmosphere. Mangrove ecosystems can store more carbon compared to most rainforests. This is because mangrove plants utilize CO2 for photosynthesis and store it in the form of biomass and sediments. The purpose of this research is to determine the potential of mangrove ecosystems in absorbing and storing carbon, particularly the content of below-ground carbon and Biomass from several locations on Lepar Island. The data collection method used systematic sampling, where the placement of sampling plots had regular distances from the sea to the land. Substrate samples were taken using a core sampler tool and analyzed using the Loss of Ignition (LOI) method to determine carbon content. The research results showed that the average soil density at all stations was 1.0 g/cm3. The average percentage of organic carbon at all stations was 0.09 C%. The average total carbon content at all stations was 105.73 tons/ha. Mangrove forests are capable of storing a large amount of carbon in both biomass and sediments. Keywords: Belowground, Karbon, Lepar Island Abstrak Ekosistem mangrove sama halnya dengan ekosistem hutan lain yang memiliki peran sebagai penyerap CO2 dari atmosfer. Ekosistem mangrove mampu menyimpan lebih banyak karbon dibandingkan dengan kebanyakan hutan hujan. Hal ini dikarenakan tumbuhan mangrove memanfaatkan CO2 untuk fotosintesis dan menyimpannya dalam bentuk biomassa dan sedimen. Tujuan penelitian ini untuk mengetahui potensi ekosistem mangrove dalam menyerap dan menyimpan karbon terutama kandungan pada Belowground Carbon mangrove dan Biomassa dari beberapa lokasi yang ada di pulau lepar. Metode pengambilan data dilapangan menggunakan systematic sampling method, dimana penempatan plot sampling memiliki jarak yang teratur antar plot dari laut ke darat. Pengambilan sampel substrat menggunakan alat core sampler dan dilakukan dengan metode komposit. kemudian dianalisis kandungan karbon menggunakan metode Loss of Ignition (LOI). Hasil penelitian menunjukan nilai rata-rata densitas tanah seluruh stasiun yaitu sebesar 1,0 g/cm3. Nilai rata-rata presentase karbon organik pada seluruh stasiun yaitu sebesar 0,09 C%. Nilai rata-rata kandungan karbon total pada seluruh stasiun yaitu sebesar 105,73 ton/ha. Hutan mangrove mampu menampung kandungan karbon dengan jumlah besar baik di biomassa dan sedimen. Kata Kunci  :Belowground, Karbon, Pulau Lepar
Identification Of The Condition Of The Ship Wreck As A Diving Tourism Object In The Waters Of "Tawara" Bunaken National Park, North Sulawesi Province Karauwan, Maykel; Gumolili, Youdy
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.v11i2.52089

Abstract

The coral reef ecosystem is a place to live, a place to breed, and even a place to find food for various kinds of marine biota, this is what makes this ecosystem a beautiful attraction as a tourist destination. In general, the waters of Bunaken Island, which are included in the Bunaken National Park Area, are one of the world's tourist destinations, which present coral reefs as a charm that can be enjoyed for their beauty and high level of biota diversity. The objectives of this research are: To identify the condition of existing shipwrecks; Identify corals attached to shipwrecks; and analyze the Suitability of diving tourism. The coral type Pocillopora verrucosa was found with a total of 45 colonies with an average growth of 7 cm, Ascidian Polycarpa Aurata the number of colonies found was 18 with an average growth of 3, Ascidian Didemnum mole the highest number of colonies found was 97 colonies with an average growth of 2 cm, while Cyphastrea microphthalmia number of colonies was 8 and the average growth was 3 cm. Analysis of tourism suitability for this location for diving tourism with an IKW value of 2.25, which based on the score means it is in the "suitable" category. Keywords: Tourism, Ship, Shipwreck, Bunaken, Coral Abstrak Ekosistem terumbu karang sebagai tempat hidup, tempat berkembang biak, bahkan tempat mencari makan berbagai macam biota laut, hal inilah yang menjadikan ekosistem ini memiliki daya tarik yang indah untuk dijadikan destinasi wisata. Secara umum perairan Pulau Bunaken yang masuk dalam Kawasan Taman Nasional Bunaken, adalah salah Destinasi wisata Dunia, yang menghadirkan Terumbu karang sebagai pesona yang dinikmati keindahannya dan tingkat keanekaragaman biota yang tinggi. Adupun tujuan dari penelitian ini yaitu : Mengidentifikasi kondisi kapal karam yang ada; Mengidentifikasi karang yang menempel pada kapal karam;  Menganalisis Kesesuaian wisata selam. Ditemukan karang berjenis Pocillopora verrucosa dengan jumlah koloni 45 dengan pertumbuhan rata-rata 7 cm,  Ascidian Polycarpa Aurata  jumlah koloni yang ditemukan 18 pertumbuhan rata-rata 3, Ascidian Didemnum mole jumlah koloni yang terbanyak ditemukan 97 koloni dengan pertumbuhan rata-rata 2 cm, sedangkan Cyphastrea microphthalma jumlah koloni 8 dan pertumbuhan rata-rata 3 cm. Ananlisis kesesuaian wisata untuk lokasi tersebut untuk wisata selam dengan nilai IKW, 2,25 yang berdasarkan skor artinya dalam kategori “sesuai”. Kata Kunci : Wisata, Kapal,  Karam, Bunaken, Karang
Morphology and Anatomy of Macroalgae Community in Rap Rap Coastal Waters, Tongkaina Village, Manado City Rafii, Keken Angliyana; Kepel, Rene Ch.; Kondoy, Khristin F I.; Mandagi, Stephanus V.; Tombokan, John L.; 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.v12i1.52140

Abstract

Macroalgae are low-level plants that generally grow attached to certain substrates such as corals, mud, sand, rocks, and other hard objects. Macroalgae are algae that have a macroscopic body shape and size. A community is a group of beings living together in the same place. Thus the macroalgae community is a group of lower plants that have macroscopic body sizes living together. The coastal area of Rap-Rap Beach is located in Tongkaina Village, Manado City, North Sulawesi Province. This location is one of the stable macroalgae habitats, meaning that there is still little habitat damage that occurs, so macroalgae can still be obtained directly from nature. This coast is also known as mangrove ecotourism and the path to Bunaken Island. The purpose of this study is to describe the morphology and anatomy of each macroalgae species. Data collection using the Line Transect method with a squared sampling technique was carried out at the lowest low tide. Temperature measurement using a thermometer and salinity using a refractometer, and for determination of substrate visually see the type of substrate. Keywords: morphology, anatomy, community, macroalgae, Rap Rap. Abstrak Makroalga merupakan tumbuhan tingkat rendah yang umumnya tumbuh melekat pada substrat tertentu seperti pada karang, lumpur, pasir, batu dan benda keras lainnya. Makroalga yaitu alga yang memiliki bentuk dan ukuran tubuh makroskopik. Komunitas adalah kelompok makhluk yang hidup secara bersama-sama dalam suatu tempat yang bersamaan. Dengan demikian komunitas makroalga adalah kelompok tumbuhan rendah yang memiliki ukuran tubuh makroskopik yang hidup bersamaan. Wilayah pesisir Pantai Rap-Rap terletak di Kelurahan Tongkaina, Kota Manado, Provinsi Sulawesi Utara. Lokasi ini merupakan salah satu habitat makroalga yang stabil artinya masih sedikit kerusakan habitat yang terjadi, sehingga makroalga masih dapat diperoleh secara langsung dari alam. Pesisir ini juga dikenal sebagai ekowisata mangrove dan jalur ke Pulau Bunaken. Tujuan penelitian ini adalah mendeskripsikan morfologi dan anatomi masing-masing spesies makroalga. Pengambilan data menggunakan metode Line Transect dengan teknik sampling kuadrat yang dilakukan pada saat surut terendah. Pengukuran suhu menggunakan Thermometer dan salinitas menggunakan Refraktometer, dan untuk penentuan substrat dilihat secara visual jenis dari substrat tersebut. Kata kunci: morfologi, anatomi, komunitas, makroalga, Rap Rap.
Utilization of Landsat 8/ETM+ and Google Earth Engine Images for Coastal Identification in Sungai Nibung Village, Kubu Raya Regency, West Kalimantan Nurdiansyah , Syarif Irwan; Helena, Shifa; Warsidah
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.v12i1.52191

Abstract

Changes in coastlines cause continuous processes through various processes, both abrasion and coastal accretion, which are caused by sediment movements and coastal currents. This research aims to map changes in the coastline in Sungai Nibung Village using multi-temporal imagery for 2013-2023 from Google Earth Engine (GEE). The benefit of this research is to see changes in the coastline of Sungai Nibung so that coastal area management, including abrasion disaster mitigation, can be carried out appropriately. The method used is a quantitative descriptive method from the results of processed NSM and EPR data from DSAS and the results of Landsat image digitization from GEE. The most extensive abrasion phenomenon results will occur in 2023, namely 64,924 m2 and accretion of 120,886 m2. Coastal changes digitized using ArcGIS showed that the coastline change in 2013 was 0.433 km2, in 2016 it was 0.521 km2, in 2019 it was 0.538 km2 and in 2023 it was 0.649 km2. DSAS analysis shows that almost every stretch of beach in Sungai Nibung has experienced abrasion. Abrasion in Sungai Nibung occurred because there were not many wave breakers and damage to mangrove land. The rate of abrasion in Sungai Nibung over 10 years reached -574.96 m. Keywords: DSAS, EPR, NSM, Google Earth Engine. Abstrak Perubahan garis pantai menyebabkan proses terus menerus melalui berbagai proses baik abrasi maupun akresi pantai yang diakibatkan oleh pergerakan sedimen, arus susur pantai. Penelitian ini bertujuan untuk memetakan perubahan garis pantai di Desa Sungai Nibung menggunakan citra multi temporal tahun 2013-2023 dari Google Earth Engine (GEE). Manfaat penelitian ini untuk melihat perubahan pesisir pantai Desa Sungai Nibung  maka pengelolaan kawasan pesisir termasuk di dalamnya mitigasi bencana abrasi dapat dilakukan dengan tepat. Metode yang digunakan adalah metode deskriptif kuantitatif dari hasil olahan data NSM dan EPR dari DSAS dan hasil digitasi Citra Landsat dari GEE. Hasil fenomena abrasi paling luas terjadi di tahun 2023 yaitu 64,924 m2 dan akresi sebesar 120,886 m2. Perubahan pesisir yang digitasi menggunakan ArcGIS diperoleh perubahan garis pantai tahun 2013 sebesar 0,433 km2 , tahun 2016 sebesar 0,521 km2 , tahun 2019 sebesar 0,538 km2 dan tahun 2023 sebesar 0,649 km2. Analisis DSAS hampir di setiap ruas pantai di Desa Sungai Nibung mengalami abrasi. Abrasi di Desa Sungai Nibung terjadi akibat belum banyak pemecah ombak dan rusaknya lahan mangrove. Laju abrasi di Desa Sungai Nibung selama 10 tahun mencapai -574,96 m. Kata Kunci  : DSAS, EPR, NSM, Google Earth Engine
Attachment Of Macrobenthos Larvae To Organic And Non-Organic Substrates Saragih, Hans S. R. P.; Ompi, Medy; Kaligis, Erly Yosef; Boneka, Farnis B. Boneka; Warouw, Veibe; Paransa, Darus Sa’adah Johanis
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.v12i1.52205

Abstract

The objectives of this study are 1) to Identify the specimen of macrobenthos attached to the substrate provided in 2 locations. 2) to determine the type of substrate attached by the larvae at both sites.  3) to determine the density of Macrobenthos attached to the substrate provided at 2 sites. A plywood plate had 16 holes with a diameter of 1 cm each that had been randomly filled with organic substrates, namely coconut fibers, palm fibers, shells with 'bysus' threads, and non-organic substrates in the form of plastic ropes. Each substrate has four replicates.  The plywood plate with 3 replicates was placed in each station.  The plate was removed and taken to the laboratory after 1 month. The identification up to family, genus, and species as well as the density of each species were applied.  The results showed that not only the larvae of Septifer bilocularis attached to organic and non-organic substrates, but six species of larvae were also identified. The sizes of new settler macrobenthos from 2 mm to 1 cm attached on organic and non-organic substrates were identified. The density of new settlers species attached to substrates varied from 0.03 – 0.5 individuals/cm2.  The new settlers identified 7 species in Tiwoho and 3 species in Malalayang.    Keywords: Settlement, Substrate, Tiwoho Coast, Malalayang Coas. Abstrak Tujuan dari penelitian ini adalah 1) Mengidentifikasi jenis-jenis  makrobenthos yang menempel pada substrat yang disediakan di 2 lokasi. 2) Mengidentifikasi jenis substrat sebagai tempat penempelan larva macrobenthos di  kedua lokasi, dan 3) Menentukan kepadatan jenis Makrobenthos  pada substrat yang disediakan di 2 lokasi. Triplek (plate) memiliki 16 lubang dengan ukuran diameter masing-masing 1 cm yang telah diisi secara acak dengan substrat organik yaitu serabut kelapa, serabut ijuk, cangkang ber ‘byssus’, serta substrat non organik berupa tali plastik. Masing-masing substrat ini memiliki 4 ulangan.  Selanjutnya, plate, masing-masing dengan 3 ulangan ditempatkan di setiap intertidal, Towoho dan Malalayang.  Plate diangkat setelah 1 bulan, yang dibawah ke laboratorium untuk foto dan diidentifikasi baik di tingkat jenis, genus, ataupun family.  Hasil penelitian menunjukkan bahwa tidak hanya larva kerang Septifer bilocularis (Linnaeus, 1758), yang menempel pada substrat organik dan non organik, tetapi ditemukan larva macrobenthos lainnya, yaitu 2 jenis dari Cerithum egenum (Gould, 1849), dan Calcarina defranci d'Orbigny, 1826, 2 family/genus, yaitu: Canthocamptidae dan Portunidae, dan 2 klass, yaitu : Polychaeta dan Demospongae.  Teridentifikasi jenis larva makro benthos yang baru menempel pada substrat substrat organik dan non-organik dengan ukuran yang bervariasi, yaitu dari 2 mm – 1 cm. Kepadatan jenis macrobenthos yang baru menempel adalah dari 0.03 – 0.5 individu/cm2.  Ada 7 jenis teridentifkasi di lokasi Tiwoho, dan 3 jenis teridentifkasi di Malalayang Kata kunci: Penempelan, Substrat, Pesisir Tiwoho, Pesisir Malalayang  
Analysis Of The Effect Of El Niño La Nina And Sea Level Temperatures On Chlorophyll-A Concentrations In The Waters Of The Maluku Sea: Pesoth, Christianto; Rimper, Joice R.T.S.L; Warouw, Veibe; Mantiri, Rose O. S. E.; Sumilat, Deiske Adeliene
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.v12i1.52236

Abstract

Global weather phenomena cannot be separated from the interaction between the ocean and the atmosphere. El Nino and La Nina are phenomena that were related to the interaction of the sea and the atmosphere which affects many aspects, including the fertility of waters. Indicators of the fertility of water could be determined from the distribution of sea surface temperature and chlorophyll-a concentration. This study aims to analyze variations in the distribution of sea surface temperature and chlorophyll-a in the Maluku Sea when the El Nino and La Nina phenomena are activated. The results showed that when the El Nino phenomenon was activated, there was a decrease in sea surface temperature and an increase in the concentration of chlorophyll-a from normal conditions. Besides, when the La Nina phenomenon was activated, there was an increase in sea surface temperature and a decrease in the concentration of chlorophyll-a from normal conditions. Spatial interpretation when El Nino and La Nina are activated showed low values with a distribution indicating the mixed proceed for the sea surface temperature parameter and showed higher values with an even distribution for the chlorophyll-a parameter. Keywords: Sea Surface Temperature, Chlorophyll-a, El Nino, La Nina. Abstrak Fenomena cuaca secara global tidak bisa lepas kaitannya dengan interaksi antara laut dan atmosfer. El Nino dan La Nina merupakan salah satu fenomena yang berkaitan dengan interaksi laut dan atmosfer yang berpengaruh terhadap banyak aspek termasuk kesuburan suatu perairan. Indikator kesuburan suatu perairan dapat ditentukan dari distribusi suhu permukaan laut dan konsentrasi klorofil-a. Penelitian ini bertujuan untuk menganalisa variasi distribusi suhu permukaan laut dan klorofil-a di perairan Laut Maluku saat fenomena El Nino dan La Nina aktif. Hasil penelitian menunjukkan bahwa saat fenomena El Nino aktif terjadi penurunan suhu permukaan laut dan peningkatan konsentrasi klorofil-a dari kondisi normal. Sebaliknya saat fenomena La Nina aktif terjadi peningkatan suhu permukaan laut dan penurunan konsentrasi klorofil-a dari kondisi normal. Interpretasi spasial saat El Nino dan La Nina aktif menunjukkan nilai yang rendah dengan sebaran yang menunjukkan proses mixing untuk parameter suhu permukaan laut, dan menunjukkan nilai yang lebih tinggi dengan sebaran merata untuk parameter klorofil-a. Kata kunci: Suhu Permukaan Laut, Klorofil-a, El Nino, La Nina.

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