Pub Date : 2022-11-12DOI: 10.14710/jmr.v11i4.35310
Budi Aryono, Muhammad Zainuddin, Risha Fillah Fithria
Antioksidan diperlukan tubuh untuk melindungi kesehatan kulit kita. Salah satu sumber antioksidan adalah mikroalga Spirulina sp. Permasalahan pemanfaatan spirulina adalah diperlukan teknologi kultur yang tepat untuk menghasilkan aktivitas antioksidan tinggi. Tujuan penelitian adalah melakukan optimasi pencahayaan (warna cahaya) dalam kultur spirulina untuk mendapatkan pertumbuhan terbaik, kadar pigmen dan aktivitas antioksidan tertinggi. Penelitian menggunakan metode eksperimen laboratoris dengan 5 perlakuan yaitu pemberian pencahaaan dengan LED warna biru, hijau, merah, putih dan lampu TL (fluoresens). Perlakuan perbedaan warna pencahayaan dalam kultur berpengaruh nyata terhadap pertumbuhan, kadar pigmen dan aktivitas antioksidan. Perlakuan terbaik adalah pemberian pencahayaan LED merah yaitu Spirulina platensis memiliki pertumbuhan mutlak sebesar 1,602 d x 104 sel/ml, laju pertumbuhan 0,108 hari-1, jumlah generasi 2,028, waktu generasi 6,416 hari, yield 9,649 gr/gr, dan produktifitas 24,740 gr/L.hari. Ekstrak spirulina mengandung klorofil a sebesar 10,153 mg/L, klorofil b sebesar 4,744 mg/L, total klorofil 16,053 mg/L, karotenoid 5,893 mg/L. selain itu juga memiliki kandungan pigmen fikobiliprotein yaitu fikosianin 0,055 mg/L, alofikosianin 0,037 mg/L dan fikoeritrin 0,218 mg/L. eksrak spirulina dari hasil kultur dengan pencahayaan LED merah memiliki aktivitas antioksidan dengan nilai IC50 sebesar 105,4 ppm. Aktivitas antioksidan dari ekstrak sepirulina di karenakan adanya kandungan senyawa fitokimia dan pigmen. Antioxidants are needed by the body to protect the health of our skin. One source of antioxidants is the microalgae spirulina sp. The problem of using spirulina is that appropriate culture technology is needed to produce high antioxidant activity. The aim of the research was to optimize lighting (light color) in spirulina culture to get the best growth, highest pigment content and antioxidant activity. The study used a laboratory experimental method with 5 treatments, lighting with blue, green, red, white LEDs and fluorescent lights. The treatment of different lighting colors in culture had a significant effect on growth, pigment levels and antioxidant activity. The best treatment was the provision of red LED lighting, Spirulina platensis which had absolute growth of 1.602 d x 104 cells/ml, growth rate of 0.108 day-1 , number of generations 2,028, generation time of 6.416 days, yield of 9.649 gr/gr, and productivity of 24.740 gr/L.day. Spirulina extract contains chlorophyll a of 10,153 mg/L, chlorophyll b of 4,744 mg/L, total chlorophyll 16,053 mg/L, carotenoids 5,893 mg/L. In addition, it also contains phycobiliprotein pigments, phycocyanin 0.055 mg/L, allophycocyanin 0.037 mg/L and phycoerythrin 0.218 mg/L. Spirulina extract from culture results with red LED lighting has antioxidant activity with an IC50 value of 105.4 ppm. The antioxidant activity of the sepirulina extract is due to the presence of phytochemical compounds and pigment
{"title":"Pertumbuhan, Kadar Pigmen dan Aktivitas Antioksidan Spirulina platensis pada Kultur dengan Perbedaan Warna Pencahayaan Leds","authors":"Budi Aryono, Muhammad Zainuddin, Risha Fillah Fithria","doi":"10.14710/jmr.v11i4.35310","DOIUrl":"https://doi.org/10.14710/jmr.v11i4.35310","url":null,"abstract":"Antioksidan diperlukan tubuh untuk melindungi kesehatan kulit kita. Salah satu sumber antioksidan adalah mikroalga Spirulina sp. Permasalahan pemanfaatan spirulina adalah diperlukan teknologi kultur yang tepat untuk menghasilkan aktivitas antioksidan tinggi. Tujuan penelitian adalah melakukan optimasi pencahayaan (warna cahaya) dalam kultur spirulina untuk mendapatkan pertumbuhan terbaik, kadar pigmen dan aktivitas antioksidan tertinggi. Penelitian menggunakan metode eksperimen laboratoris dengan 5 perlakuan yaitu pemberian pencahaaan dengan LED warna biru, hijau, merah, putih dan lampu TL (fluoresens). Perlakuan perbedaan warna pencahayaan dalam kultur berpengaruh nyata terhadap pertumbuhan, kadar pigmen dan aktivitas antioksidan. Perlakuan terbaik adalah pemberian pencahayaan LED merah yaitu Spirulina platensis memiliki pertumbuhan mutlak sebesar 1,602 d x 104 sel/ml, laju pertumbuhan 0,108 hari-1, jumlah generasi 2,028, waktu generasi 6,416 hari, yield 9,649 gr/gr, dan produktifitas 24,740 gr/L.hari. Ekstrak spirulina mengandung klorofil a sebesar 10,153 mg/L, klorofil b sebesar 4,744 mg/L, total klorofil 16,053 mg/L, karotenoid 5,893 mg/L. selain itu juga memiliki kandungan pigmen fikobiliprotein yaitu fikosianin 0,055 mg/L, alofikosianin 0,037 mg/L dan fikoeritrin 0,218 mg/L. eksrak spirulina dari hasil kultur dengan pencahayaan LED merah memiliki aktivitas antioksidan dengan nilai IC50 sebesar 105,4 ppm. Aktivitas antioksidan dari ekstrak sepirulina di karenakan adanya kandungan senyawa fitokimia dan pigmen. Antioxidants are needed by the body to protect the health of our skin. One source of antioxidants is the microalgae spirulina sp. The problem of using spirulina is that appropriate culture technology is needed to produce high antioxidant activity. The aim of the research was to optimize lighting (light color) in spirulina culture to get the best growth, highest pigment content and antioxidant activity. The study used a laboratory experimental method with 5 treatments, lighting with blue, green, red, white LEDs and fluorescent lights. The treatment of different lighting colors in culture had a significant effect on growth, pigment levels and antioxidant activity. The best treatment was the provision of red LED lighting, Spirulina platensis which had absolute growth of 1.602 d x 104 cells/ml, growth rate of 0.108 day-1 , number of generations 2,028, generation time of 6.416 days, yield of 9.649 gr/gr, and productivity of 24.740 gr/L.day. Spirulina extract contains chlorophyll a of 10,153 mg/L, chlorophyll b of 4,744 mg/L, total chlorophyll 16,053 mg/L, carotenoids 5,893 mg/L. In addition, it also contains phycobiliprotein pigments, phycocyanin 0.055 mg/L, allophycocyanin 0.037 mg/L and phycoerythrin 0.218 mg/L. Spirulina extract from culture results with red LED lighting has antioxidant activity with an IC50 value of 105.4 ppm. The antioxidant activity of the sepirulina extract is due to the presence of phytochemical compounds and pigment","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47589506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-08DOI: 10.14710/jmr.v11i4.36432
Risha Fillah Fithria, Budi Aryono, Muhammad Zainuddin
Intensitas cahaya merupakan faktor penting dalam fotosintesis. Tujuan penelitian adalah melakukan optimasi intensitas pencahayaan kultur Spirulina platensis untuk mendapatkan pertumbuhan, protein, biopigmen dan aktivitas antioksidan tertinggi. Hasil penelitian menunjukkan bahwa perlakuan perbedaan intensitas pencahayaan berpengaruh terhadap kultur Spirulina platensis. Perlakuan terbaik adalah intensitas 9000 lux yaitu pertumbuhan mutlak sebesar 1,948 d x 104 sel/ml, laju pertumbuhan 0,171 hari-1, jumlah generasi 2,215, waktu generasi 4,067 hari, yield 5,764 gr/gr, produktifitas 21,347 gr/L.hari, protein 12,61 %. Ekstrak Spirulina platensis mengandung klorofil a sebesar 9,187 mg/L, klorofil b 6,679 mg/L, total klorofil 17,167 mg/L, karotenoid 3,685 mg/L, fikosianin 0,112 mg/L, alofikosianin 0,014 mg/L, fikoeritrin 0,285 mg/L. Eksrak Spirulina platensis memiliki aktivitas antioksidan dengan nilai IC50 sebesar 111,5 ppm. Aktivitas perendaman radikal DPPH dari ekstrak dikarenakan adanya senyawa antioksidan dari klorofil, karotenoid dan fikobiliprotein. Light intensity is an important factor in photosynthesis. The aim of the research was to optimize the lighting intensity of Spirulina platensis culture to obtain the highest growth, protein, biopigment and antioxidant activity. The treatment of different lighting intensity affects the culture of Spirulina platensis. The best treatment was the intensity of 9000 lux, namely absolute growth of 1.948 d x 104 cell/ml, growth rate of 0.171 day-1, number of generations of 2.215, generation time of 4.067 days, yield of 5.764 gr/gr, productivity 21.347 gr/L.day, protein 12,61%. Spirulina platensis extract contains chlorophyll a 9.187 mg/L, chlorophyll b 6.679 mg/L, total chlorophyll 17,167 mg/L, carotenoids 3.685 mg/L, phycocyanin 0.112 mg/L, allophycocyanin 0.014 mg/L, phycoerythrin 0.285 mg/L. Spirulina platensis extract has antioxidant activity with an IC50 value of 111.5 ppm. The DPPH radical scavenging activity of the extract was due to the presence of antioxidant compounds from chlorophyll, carotenoids and phycobiliproteins.
{"title":"Pengaruh Intensitas Pencahayaan Yang Berbeda Pada Kultur Spirulina platensis Terhadap Kandungan Protein, Kadar Pigmen Dan Aktivitas Antioksidan","authors":"Risha Fillah Fithria, Budi Aryono, Muhammad Zainuddin","doi":"10.14710/jmr.v11i4.36432","DOIUrl":"https://doi.org/10.14710/jmr.v11i4.36432","url":null,"abstract":"Intensitas cahaya merupakan faktor penting dalam fotosintesis. Tujuan penelitian adalah melakukan optimasi intensitas pencahayaan kultur Spirulina platensis untuk mendapatkan pertumbuhan, protein, biopigmen dan aktivitas antioksidan tertinggi. Hasil penelitian menunjukkan bahwa perlakuan perbedaan intensitas pencahayaan berpengaruh terhadap kultur Spirulina platensis. Perlakuan terbaik adalah intensitas 9000 lux yaitu pertumbuhan mutlak sebesar 1,948 d x 104 sel/ml, laju pertumbuhan 0,171 hari-1, jumlah generasi 2,215, waktu generasi 4,067 hari, yield 5,764 gr/gr, produktifitas 21,347 gr/L.hari, protein 12,61 %. Ekstrak Spirulina platensis mengandung klorofil a sebesar 9,187 mg/L, klorofil b 6,679 mg/L, total klorofil 17,167 mg/L, karotenoid 3,685 mg/L, fikosianin 0,112 mg/L, alofikosianin 0,014 mg/L, fikoeritrin 0,285 mg/L. Eksrak Spirulina platensis memiliki aktivitas antioksidan dengan nilai IC50 sebesar 111,5 ppm. Aktivitas perendaman radikal DPPH dari ekstrak dikarenakan adanya senyawa antioksidan dari klorofil, karotenoid dan fikobiliprotein. Light intensity is an important factor in photosynthesis. The aim of the research was to optimize the lighting intensity of Spirulina platensis culture to obtain the highest growth, protein, biopigment and antioxidant activity. The treatment of different lighting intensity affects the culture of Spirulina platensis. The best treatment was the intensity of 9000 lux, namely absolute growth of 1.948 d x 104 cell/ml, growth rate of 0.171 day-1, number of generations of 2.215, generation time of 4.067 days, yield of 5.764 gr/gr, productivity 21.347 gr/L.day, protein 12,61%. Spirulina platensis extract contains chlorophyll a 9.187 mg/L, chlorophyll b 6.679 mg/L, total chlorophyll 17,167 mg/L, carotenoids 3.685 mg/L, phycocyanin 0.112 mg/L, allophycocyanin 0.014 mg/L, phycoerythrin 0.285 mg/L. Spirulina platensis extract has antioxidant activity with an IC50 value of 111.5 ppm. The DPPH radical scavenging activity of the extract was due to the presence of antioxidant compounds from chlorophyll, carotenoids and phycobiliproteins.","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42097725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-11-01DOI: 10.14710/jmr.v11i4.35605
Anma Hari Kusuma, Eko Effendi, M. Hidayatullah, Oktora Susanti
Perubahan iklim di sebabkan oleh kenaikan gas karbon dioksida (CO2) semenjak era revolusi industri dimana hal ini dicirikan dengan adanya peningkatan suhu, paras muka laut, perubahan pola curah hujan serta meningkatnya kejadian ekstrim seperti banjir, kekeringan, gelombang panas dan badai. Fenomena ini akan berdampak serius apabila berlangsung secara terus-menerus. Blue carbon (karbon biru) merupakan karbon yang diperangkap dan disimpan melalui proses fotosintesis oleh organisme autotrof dalam bentuk biomassa dan sedimen oleh ekosistem pesisir dan laut. Mangrove merupakan salah satu dari eksosistem sebagai blue carbon tersebut. Mangrove Register 15 merupakan suatu kawasan mangrove yang berada Kecamatan Pasir Sakti, Kabupaten Lampung Timur, Provinsi Lampung. Penelitian ini bertujuan menganalisis karbon tersimpan pada tegakan, nek romassa, serasah, dan substrat mangrove. Penelitian dilakukan dari bulan Maret–Mei 2021. Hasil penelitian menunjukkan karbon tersimpan pada sedimen lebih besar dibandingkan dengan karbon tersimpan pada tegakan, nekromassa, dan serasah. Karbon tersimpan pada sedimen yang tertinggi berada pada sedimen yang memili ki ukuran liat kasar karena liat kasar dapat menyimpan unsur hara yang tinggi. Climate change is caused by an increase in carbon dioxide (CO2) gas since the industrial revolution era where it is characterized by an increase in temperature, sea level, changes in rainfall patterns and increased extreme events such as floods, droughts, heat waves and storms. This phenomenon will have a serious impact if it continues. Blue carbon is carbon that is trapped and stored through the process of photosynthesis by autotrophic organisms in the form of biomass and sediment by coastal and marine ecosystems. Mangroves are one of these ecosystems as blue carbon. Mangrove Register 15 is a mangrove area located in Pasir Sakti District, East Lampung Regency, Lampung Province. This study aims to analyze the carbon stored in stands, nec romassa, litter, and mangrove substrates. The study was conducted from March–May 2021. The results showed that carbon stored in sediments was greater than carbon stored in stands, necromass, and litter. The highest carbon stored in sediments is in sediments that have the size of coarse clay because coarse clay can store high nutrients.
{"title":"Estimasi Serapan Karbon Pada Vegetasi Mangrove Register 15, Kecamatan Pasir Sakti, Kabupaten Lampung Timur, Provinsi Lampung","authors":"Anma Hari Kusuma, Eko Effendi, M. Hidayatullah, Oktora Susanti","doi":"10.14710/jmr.v11i4.35605","DOIUrl":"https://doi.org/10.14710/jmr.v11i4.35605","url":null,"abstract":"Perubahan iklim di sebabkan oleh kenaikan gas karbon dioksida (CO2) semenjak era revolusi industri dimana hal ini dicirikan dengan adanya peningkatan suhu, paras muka laut, perubahan pola curah hujan serta meningkatnya kejadian ekstrim seperti banjir, kekeringan, gelombang panas dan badai. Fenomena ini akan berdampak serius apabila berlangsung secara terus-menerus. Blue carbon (karbon biru) merupakan karbon yang diperangkap dan disimpan melalui proses fotosintesis oleh organisme autotrof dalam bentuk biomassa dan sedimen oleh ekosistem pesisir dan laut. Mangrove merupakan salah satu dari eksosistem sebagai blue carbon tersebut. Mangrove Register 15 merupakan suatu kawasan mangrove yang berada Kecamatan Pasir Sakti, Kabupaten Lampung Timur, Provinsi Lampung. Penelitian ini bertujuan menganalisis karbon tersimpan pada tegakan, nek romassa, serasah, dan substrat mangrove. Penelitian dilakukan dari bulan Maret–Mei 2021. Hasil penelitian menunjukkan karbon tersimpan pada sedimen lebih besar dibandingkan dengan karbon tersimpan pada tegakan, nekromassa, dan serasah. Karbon tersimpan pada sedimen yang tertinggi berada pada sedimen yang memili ki ukuran liat kasar karena liat kasar dapat menyimpan unsur hara yang tinggi. Climate change is caused by an increase in carbon dioxide (CO2) gas since the industrial revolution era where it is characterized by an increase in temperature, sea level, changes in rainfall patterns and increased extreme events such as floods, droughts, heat waves and storms. This phenomenon will have a serious impact if it continues. Blue carbon is carbon that is trapped and stored through the process of photosynthesis by autotrophic organisms in the form of biomass and sediment by coastal and marine ecosystems. Mangroves are one of these ecosystems as blue carbon. Mangrove Register 15 is a mangrove area located in Pasir Sakti District, East Lampung Regency, Lampung Province. This study aims to analyze the carbon stored in stands, nec romassa, litter, and mangrove substrates. The study was conducted from March–May 2021. The results showed that carbon stored in sediments was greater than carbon stored in stands, necromass, and litter. The highest carbon stored in sediments is in sediments that have the size of coarse clay because coarse clay can store high nutrients.","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43606681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.14710/jmr.v11i4.35467
Ika Pibria Ningrum, Nor Sa’adah, Mahmiah Mahmiah
Gili Ketapang merupakan pulau kecil yang secara administratif masuk dalam wilayah Kecamatan Sumberasih Kabupaten Probolinggo, dengan mayoritas masyarakatnya bermata pencaharian sebagai nelayan. Pengelolaan sampah di lingkungan sekitar dianggap masih minim sehingga terlihat jelas banyaknya sampah yang berserakan di bibir pantai yang berjarak dekat dengan pemukiman. Sampah plastik akan mengalami degradasi menjadi plastik yang lebih kecil dari ukuran semula yang disebut dengan mikroplastik. Mikroplastik merupakan jenis sampah plastik yang berukuran lebih kecil dari 5 mm, dapat mengapung atau tenggelam karena berat massa jenis mikroplastik lebih ringan daripada air laut. Jenis mikroplastik yang banyak ditemukan di perairan yaitu fragment,fiber,dan film. Penelitian ini bertujuan mengetahui jenis, warna, ukuran dan kelimpahan mikroplastik pada sedimen di Gili Ketapang, Probolinggo. Metode yang digunakan diawali dengan pengambilan sampel air secara purposive random sampling. Sampel sedimen digunakan untuk mengidentifikasi mikroplastik menggunakan mikroskop dengan perbesaran 10 kali. Jenis mikroplastik yang ditemukan pada sedimen di Gili Ketapang, Probolinggo adalah fiber, fragmen dan film. Pada sedimen ditemukan beberapa warna untuk fiber yaitu biru, hijau dan merah, untuk jenis fragmen berwarna kuning, biru, merah, dan hijau, sedangkan pada jenis filamen ditemukan hanya satu warna yaitu putih bening. Ukuran mikroplastik pada sedimen 0,025 – 2,975 mm. Kelimpahan mikroplastik pada sedimen di 3 stasiun paling banyak pada jenis film sebanyak 1635 partikel/kg dan paling sedikit adalah 1180 partikel/kg dengan jenis mikroplastik fiber. Gili Ketapang is a small island that is administratively included in the Sumberasih District of Probolinggo Regency, with the majority of the people living as fishermen. Waste Management in the surrounding environment is considered to be still minimal so that it is clear that there is a lot of garbage scattered on the shoreline close to settlements. Plastic waste will degrade into plastic that is smaller than its original size called microplastics. Microplastics are a type of plastic waste that is smaller than 5 mm, can float or sink because the weight of the density of microplastics is lighter than sea water. The types of microplastics found in water are fragments,fibers, and films. This study aims to determine the type, color, size and abundance of microplastics in sediments in Gili Ketapang, Probolinggo. The method used begins with water sampling called purposive random sampling. Sediment samples were used to identify microplastics using a microscope with a magnification of 10 times. The types of microplastics found in sediments in Gili Ketapang, Probolinggo are fibers, fragments and films. In the sediment found several colors for fiber such as blue, green and red, for the type of fragments are yellow, blue, red, and green, while in the type of filaments found only one color is clear white. The size of microp
{"title":"Jenis dan Kelimpahan Mikroplastik Pada Sedimen di Gili Ketapang, Probolinggo","authors":"Ika Pibria Ningrum, Nor Sa’adah, Mahmiah Mahmiah","doi":"10.14710/jmr.v11i4.35467","DOIUrl":"https://doi.org/10.14710/jmr.v11i4.35467","url":null,"abstract":"Gili Ketapang merupakan pulau kecil yang secara administratif masuk dalam wilayah Kecamatan Sumberasih Kabupaten Probolinggo, dengan mayoritas masyarakatnya bermata pencaharian sebagai nelayan. Pengelolaan sampah di lingkungan sekitar dianggap masih minim sehingga terlihat jelas banyaknya sampah yang berserakan di bibir pantai yang berjarak dekat dengan pemukiman. Sampah plastik akan mengalami degradasi menjadi plastik yang lebih kecil dari ukuran semula yang disebut dengan mikroplastik. Mikroplastik merupakan jenis sampah plastik yang berukuran lebih kecil dari 5 mm, dapat mengapung atau tenggelam karena berat massa jenis mikroplastik lebih ringan daripada air laut. Jenis mikroplastik yang banyak ditemukan di perairan yaitu fragment,fiber,dan film. Penelitian ini bertujuan mengetahui jenis, warna, ukuran dan kelimpahan mikroplastik pada sedimen di Gili Ketapang, Probolinggo. Metode yang digunakan diawali dengan pengambilan sampel air secara purposive random sampling. Sampel sedimen digunakan untuk mengidentifikasi mikroplastik menggunakan mikroskop dengan perbesaran 10 kali. Jenis mikroplastik yang ditemukan pada sedimen di Gili Ketapang, Probolinggo adalah fiber, fragmen dan film. Pada sedimen ditemukan beberapa warna untuk fiber yaitu biru, hijau dan merah, untuk jenis fragmen berwarna kuning, biru, merah, dan hijau, sedangkan pada jenis filamen ditemukan hanya satu warna yaitu putih bening. Ukuran mikroplastik pada sedimen 0,025 – 2,975 mm. Kelimpahan mikroplastik pada sedimen di 3 stasiun paling banyak pada jenis film sebanyak 1635 partikel/kg dan paling sedikit adalah 1180 partikel/kg dengan jenis mikroplastik fiber. Gili Ketapang is a small island that is administratively included in the Sumberasih District of Probolinggo Regency, with the majority of the people living as fishermen. Waste Management in the surrounding environment is considered to be still minimal so that it is clear that there is a lot of garbage scattered on the shoreline close to settlements. Plastic waste will degrade into plastic that is smaller than its original size called microplastics. Microplastics are a type of plastic waste that is smaller than 5 mm, can float or sink because the weight of the density of microplastics is lighter than sea water. The types of microplastics found in water are fragments,fibers, and films. This study aims to determine the type, color, size and abundance of microplastics in sediments in Gili Ketapang, Probolinggo. The method used begins with water sampling called purposive random sampling. Sediment samples were used to identify microplastics using a microscope with a magnification of 10 times. The types of microplastics found in sediments in Gili Ketapang, Probolinggo are fibers, fragments and films. In the sediment found several colors for fiber such as blue, green and red, for the type of fragments are yellow, blue, red, and green, while in the type of filaments found only one color is clear white. The size of microp","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48452432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ekosistem mangrove berfungsi penting bagi lingkungan salah satunya penyimpn karbon (C). Estimasi karbon vegetasi mangrove merupakan potensi magrove menyimpan karbon (stok karbon) dalam bentuk biomassa. penelitian ini bertujuan untuk mengestimasi simpanan karbon pada sedimen di hutan mangrove Kecamatan Ayah Kabupaten Kebumen. Penelitian dilakukan bulan Desember 2020. Stasiun penelitian dibagi menjadi 4 dan ditentukan berdasarkan kerapatan. Metode yang digunakan yaitu metode deskriptif. Penentuan lokasi penelitian dilakukan dengan metode pertimbangan atau purposive sampling. Sampel sedimen diambil berdasarkan plot sampling berukuran 10x10 meter dengan pipa modifikasi berdiameter 5 cm. Analisis data dilakukan menggunakan metode LOI (Los on Ignition). Nilai estimasi karbon sedimen penelitian ini adalah stasiun MA1 sebesar 7,70 ton/ha, stasiun MA2 sebesar 8,86 ton/ha, stasiun MA3 sebesar 6,42 ton/ha dan stasiun MA4 sebesar 7,50 ton/ha. Hasil tertinggi pada stasiun MA2 kategori sedang dan hasil terrendah pada stasiun MA3 kategori rapat. Nilai karbon sedimen dipengaruhi kondisi lingkungan dan tekstur sedimen. The mangrove ecosystem has an important function for the environment, one of which is carbon storage (C). Carbon estimation of mangrove vegetation is the potential for mangroves to store carbon (carbon stock) in the form of biomass. This study aims to estimate carbon storage in sediments in the mangrove forest of Ayah District, Kebumen Regency. The research was conducted in December 2020. The research stations were divided into 4 and determined based on density. The method used is descriptive method. Determination of the location of the research is done by the method of consideration or purposive sampling. Sediment samples were taken based on a sampling plot measuring 10x10 meters with a modified pipe with a diameter of 5 cm. Data analysis was performed using the LOI (Los on Ignition) method. The estimated value of sediment carbon in this study is MA1 station of 7.70 tons/ha, MA2 station of 8.86 tons/ha, MA3 station of 6.42 tons/ha and MA4 station of 7.50 tons/ha. The highest results were at the medium category MA2 station and the lowest results were at the dense category MA3 station. Sediment carbon value is influenced by environmental conditions and sediment texture.
{"title":"Estimasi Simpanan Karbon Sedimen Mangrove di Hutan Mangrove Kecamatan Ayah, Kabupaten Kebumen","authors":"Melinda Pangestika, Nirwani Soenardjo, Rini Pramesti","doi":"10.14710/jmr.v12i1.31965","DOIUrl":"https://doi.org/10.14710/jmr.v12i1.31965","url":null,"abstract":"Ekosistem mangrove berfungsi penting bagi lingkungan salah satunya penyimpn karbon (C). Estimasi karbon vegetasi mangrove merupakan potensi magrove menyimpan karbon (stok karbon) dalam bentuk biomassa. penelitian ini bertujuan untuk mengestimasi simpanan karbon pada sedimen di hutan mangrove Kecamatan Ayah Kabupaten Kebumen. Penelitian dilakukan bulan Desember 2020. Stasiun penelitian dibagi menjadi 4 dan ditentukan berdasarkan kerapatan. Metode yang digunakan yaitu metode deskriptif. Penentuan lokasi penelitian dilakukan dengan metode pertimbangan atau purposive sampling. Sampel sedimen diambil berdasarkan plot sampling berukuran 10x10 meter dengan pipa modifikasi berdiameter 5 cm. Analisis data dilakukan menggunakan metode LOI (Los on Ignition). Nilai estimasi karbon sedimen penelitian ini adalah stasiun MA1 sebesar 7,70 ton/ha, stasiun MA2 sebesar 8,86 ton/ha, stasiun MA3 sebesar 6,42 ton/ha dan stasiun MA4 sebesar 7,50 ton/ha. Hasil tertinggi pada stasiun MA2 kategori sedang dan hasil terrendah pada stasiun MA3 kategori rapat. Nilai karbon sedimen dipengaruhi kondisi lingkungan dan tekstur sedimen. The mangrove ecosystem has an important function for the environment, one of which is carbon storage (C). Carbon estimation of mangrove vegetation is the potential for mangroves to store carbon (carbon stock) in the form of biomass. This study aims to estimate carbon storage in sediments in the mangrove forest of Ayah District, Kebumen Regency. The research was conducted in December 2020. The research stations were divided into 4 and determined based on density. The method used is descriptive method. Determination of the location of the research is done by the method of consideration or purposive sampling. Sediment samples were taken based on a sampling plot measuring 10x10 meters with a modified pipe with a diameter of 5 cm. Data analysis was performed using the LOI (Los on Ignition) method. The estimated value of sediment carbon in this study is MA1 station of 7.70 tons/ha, MA2 station of 8.86 tons/ha, MA3 station of 6.42 tons/ha and MA4 station of 7.50 tons/ha. The highest results were at the medium category MA2 station and the lowest results were at the dense category MA3 station. Sediment carbon value is influenced by environmental conditions and sediment texture.","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42598842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-28DOI: 10.14710/jmr.v11i4.35456
D. Maisaroh, Ardelia Humaimah Denatri, Yahya Abdillah Al Hanif, Dewi Fortuna Nurama, S. Bahri, Marita Ika Joesidawati
Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang dan ikan karang di Perairan Wisata Kampung Kerapu Situbondo serta strategi pengelolaannya. Penelitian ini menggunakan metode deskriptif dimana hasil observasi dideskripsikan untuk melihat kondisi suatu obyek penelitian. Metode penentuan stasiun dengan purposive sampling. Pengambilan data karang menggunakan metode Point Intersept Transect (PIT) dan pengambilan data ikan karang menggunakan metode Underwater Visual Census (UVC). Analisis strategi pengelolaannya menggunaan kuesioner dengan metode Analytic Hierarchy Process (AHP) dan Strengths, Weaknesses, Opportunities, Threats (SWOT). Hasil menunjukkan bahwa stasiun 1, 3, 4 dan 5 mempunyai tutupan karang dengan kategori baik sedangkan stasiun 2 dan 6 menunjukkan hasil tutupan kategori rusak sedang. Tutupan karang paling tinggi berada di stasiun 5 dengan persentase tutupan sebesar 74%. Kondisi ekosistem terumbu karang di Perairan Kampung Kerapu memiliki indeks keanekaragaman dalam kategori sedang – tinggi. Kondisi ikan karang di Perairan kampung Kerapu memiliki indeks keanekaragaman dalam kategori sedang. Apabila indeks keanekaragaman masuk dalam kategori sedang, maka tidak ada persaingan antar komunitas baik karang maupun ikan karang. Strategi pengelolaan terumbu karang di Pantai Wisata Kampung Kerapu yang tepat adalah dengan cara memaksimalkan kekuatan internal supaya mendapatkan peluang eksternal dalam mencapai pengelolaan yang berkelanjutan This study aims to determine the condition of coral reefs and reef fish in the Tourism Waters of Kampung Grouper Situbondo and their management strategies. This study uses a descriptive method where the results of observations are described to see the condition of an object of research. The method of determining the station is by purposive sampling. Coral data retrieval using the Point Intercept Transect (PIT) method and reef fish data collection using the Underwater Visual Census (UVC) method. Analysis of the management strategy uses a questionnaire with the Analytic Hierarchy Process (AHP) and Strengths, Weaknesses, Opportunities, Threats (SWOT) methods. The results showed that stations 1, 3, 4 and 5 had good coral cover, while stations 2 and 6 showed moderate damage. The highest coral cover was at station 5 with a cover percentage of 74%. The condition of the coral reef ecosystem in the waters of Kampung Grouper has a diversity index in the medium - high category. The condition of reef fish in the waters of the grouper village has a diversity index in the medium category. If the diversity index is in the medium category, then there is no competition between communities, both coral and reef fish. The right strategy for managing coral reefs at Pantai Wisata Kampung Kerapu is to maximize internal strengths in order to get external opportunities to achieve sustainable management.
本研究的目的是了解Situbondo农村水中珊瑚礁和珊瑚鱼的状况及其管理策略。本研究采用描述性方法，对观察结果进行描述，以了解研究对象的状况。有目的采样的测站方法。使用点间剖面（PIT）方法获取珊瑚数据，并使用水下视觉普查（UVC）方法收集珊瑚鱼数据。对其管理战略的分析使用了层次分析法（AHP）和优势、劣势、机会、威胁（SWOT）方法的一致性。结果表明，站点1、3、4和5具有良好的类别外壳，而站点2和6具有破碎的类别外壳。珊瑚覆盖率最高的是5号站，覆盖率为74%。海湾水域珊瑚礁的生态系统状况具有当前-高类别的多样性指数。墨西哥湾河流中珊瑚鱼的状况在当前类别中具有多样性指数。当多样性指数属于当前类别时，珊瑚或鱼类群落之间没有竞争。西图邦多乡村石斑鱼旅游水域中正确的珊瑚礁和礁鱼管理策略及其管理策略。本研究采用描述性方法，对观察结果进行描述，以了解研究对象的状况。确定站点的方法是通过有目的的采样。使用点拦截断面（PIT）方法检索珊瑚数据，使用水下视觉普查（UVC）方法收集珊瑚礁鱼类数据。管理战略分析采用层次分析法（AHP）和优势、劣势、机会、威胁（SWOT）方法进行问卷调查。结果显示，1号、3号、4号和5号站的珊瑚覆盖良好，而2号和6号站的破坏程度中等。珊瑚覆盖率最高的是5号站，覆盖率为74%。Kampung Grouper海域珊瑚礁生态系统的状况具有中-高类别的多样性指数。石斑鱼村水域的珊瑚鱼状况具有中等类别的多样性指数。如果多样性指数属于中等类别，那么珊瑚和珊瑚礁鱼类群落之间就没有竞争。管理Pantai Wisata Kampung Kerapu珊瑚礁的正确策略是最大限度地发挥内部优势，以获得实现可持续管理的外部机会。
{"title":"Kondisi Terumbu Karang di Pantai Wisata Kampung Kerapu Situbondo dan Strategi Pengelolaannya","authors":"D. Maisaroh, Ardelia Humaimah Denatri, Yahya Abdillah Al Hanif, Dewi Fortuna Nurama, S. Bahri, Marita Ika Joesidawati","doi":"10.14710/jmr.v11i4.35456","DOIUrl":"https://doi.org/10.14710/jmr.v11i4.35456","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang dan ikan karang di Perairan Wisata Kampung Kerapu Situbondo serta strategi pengelolaannya. Penelitian ini menggunakan metode deskriptif dimana hasil observasi dideskripsikan untuk melihat kondisi suatu obyek penelitian. Metode penentuan stasiun dengan purposive sampling. Pengambilan data karang menggunakan metode Point Intersept Transect (PIT) dan pengambilan data ikan karang menggunakan metode Underwater Visual Census (UVC). Analisis strategi pengelolaannya menggunaan kuesioner dengan metode Analytic Hierarchy Process (AHP) dan Strengths, Weaknesses, Opportunities, Threats (SWOT). Hasil menunjukkan bahwa stasiun 1, 3, 4 dan 5 mempunyai tutupan karang dengan kategori baik sedangkan stasiun 2 dan 6 menunjukkan hasil tutupan kategori rusak sedang. Tutupan karang paling tinggi berada di stasiun 5 dengan persentase tutupan sebesar 74%. Kondisi ekosistem terumbu karang di Perairan Kampung Kerapu memiliki indeks keanekaragaman dalam kategori sedang – tinggi. Kondisi ikan karang di Perairan kampung Kerapu memiliki indeks keanekaragaman dalam kategori sedang. Apabila indeks keanekaragaman masuk dalam kategori sedang, maka tidak ada persaingan antar komunitas baik karang maupun ikan karang. Strategi pengelolaan terumbu karang di Pantai Wisata Kampung Kerapu yang tepat adalah dengan cara memaksimalkan kekuatan internal supaya mendapatkan peluang eksternal dalam mencapai pengelolaan yang berkelanjutan This study aims to determine the condition of coral reefs and reef fish in the Tourism Waters of Kampung Grouper Situbondo and their management strategies. This study uses a descriptive method where the results of observations are described to see the condition of an object of research. The method of determining the station is by purposive sampling. Coral data retrieval using the Point Intercept Transect (PIT) method and reef fish data collection using the Underwater Visual Census (UVC) method. Analysis of the management strategy uses a questionnaire with the Analytic Hierarchy Process (AHP) and Strengths, Weaknesses, Opportunities, Threats (SWOT) methods. The results showed that stations 1, 3, 4 and 5 had good coral cover, while stations 2 and 6 showed moderate damage. The highest coral cover was at station 5 with a cover percentage of 74%. The condition of the coral reef ecosystem in the waters of Kampung Grouper has a diversity index in the medium - high category. The condition of reef fish in the waters of the grouper village has a diversity index in the medium category. If the diversity index is in the medium category, then there is no competition between communities, both coral and reef fish. The right strategy for managing coral reefs at Pantai Wisata Kampung Kerapu is to maximize internal strengths in order to get external opportunities to achieve sustainable management.","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42638173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-25DOI: 10.14710/jmr.v11i4.35487
Muhammad Bagus Michael Nursyahid, Andre Vanbudi, Serra Meilawati, I. Prasetyo, Oktora Susanti
Akumulasi mikroplastik di lingkungan menimbulkan ancaman ekologis dan telah menjadi masalah serius di dunia. Plastik terdistribusikan secara global di lautan dunia tersebar di kolom air, permukaan air, sepanjang garis pantai dan pada sedimen. Salah satu strategi untuk menghadapi pencemaran mikroplastik yaitu mencari agen pendegradasi mikroplastik berupa mikroba. Mikroba yang memiliki aktivitas pendegradasi terhadap polimer biasanya dapat diuji untuk mendegradasi plastik. Sumber alami untuk mendapatkan mikroba potensial yang memiliki aktivitas pendegradasi bisa didapat dari organisme yang memiliki banyak bakteri endosimbion untuk hidup seperti Mangrove. Sehingga perlu kajian mengenai potensi bakteri simbion mangrove dalam mendegradasi plastik. Uji degradasi mikroplastik polyethylene menggunakan mangrove Avicennia marina telah mendapatkan beberapa isolat agen biodegradator mikroplastik yaitu isolat WB-12, PJ-01 dan PJ-02 yang telah diketahui memiliki aktivitas biodegradasi pada mineral salt media polyethylene. The accumulation of microplastics in the environment poses an ecological threat and has become a serious problem worldwide. Plastics are distributed globally in the world's oceans scattered in the water column, water surfaces, along coastlines and in sediments. One strategy to deal with microplastic pollution is to look for microplastic degrading agents in the form of microbes. Microbes that have polymer-degrading activity can usually be tested for plastic degradation. Natural sources to obtain potential microbes that have degrading activity can be obtained from organisms that have many endosymbiont bacteria to live such as mangroves. So it is necessary to study the potential of mangrove symbiont bacteria in degrading plastic. Polyethylene microplastic degradation test using Avicennia marina mangrove has obtained some of the microplastic biodegradator agents, namely isolate WB-12, PJ-01 and PJ-02 which is known to have biodegradation activity in mineral salt media polyethylene.
{"title":"Agen Pendegradasi Mikroplastik Dari Mikroba Endofit Mangrove Avicennia marina","authors":"Muhammad Bagus Michael Nursyahid, Andre Vanbudi, Serra Meilawati, I. Prasetyo, Oktora Susanti","doi":"10.14710/jmr.v11i4.35487","DOIUrl":"https://doi.org/10.14710/jmr.v11i4.35487","url":null,"abstract":"Akumulasi mikroplastik di lingkungan menimbulkan ancaman ekologis dan telah menjadi masalah serius di dunia. Plastik terdistribusikan secara global di lautan dunia tersebar di kolom air, permukaan air, sepanjang garis pantai dan pada sedimen. Salah satu strategi untuk menghadapi pencemaran mikroplastik yaitu mencari agen pendegradasi mikroplastik berupa mikroba. Mikroba yang memiliki aktivitas pendegradasi terhadap polimer biasanya dapat diuji untuk mendegradasi plastik. Sumber alami untuk mendapatkan mikroba potensial yang memiliki aktivitas pendegradasi bisa didapat dari organisme yang memiliki banyak bakteri endosimbion untuk hidup seperti Mangrove. Sehingga perlu kajian mengenai potensi bakteri simbion mangrove dalam mendegradasi plastik. Uji degradasi mikroplastik polyethylene menggunakan mangrove Avicennia marina telah mendapatkan beberapa isolat agen biodegradator mikroplastik yaitu isolat WB-12, PJ-01 dan PJ-02 yang telah diketahui memiliki aktivitas biodegradasi pada mineral salt media polyethylene. The accumulation of microplastics in the environment poses an ecological threat and has become a serious problem worldwide. Plastics are distributed globally in the world's oceans scattered in the water column, water surfaces, along coastlines and in sediments. One strategy to deal with microplastic pollution is to look for microplastic degrading agents in the form of microbes. Microbes that have polymer-degrading activity can usually be tested for plastic degradation. Natural sources to obtain potential microbes that have degrading activity can be obtained from organisms that have many endosymbiont bacteria to live such as mangroves. So it is necessary to study the potential of mangrove symbiont bacteria in degrading plastic. Polyethylene microplastic degradation test using Avicennia marina mangrove has obtained some of the microplastic biodegradator agents, namely isolate WB-12, PJ-01 and PJ-02 which is known to have biodegradation activity in mineral salt media polyethylene.","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42541992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. oculata merupakan salah satu jenis mikroalga yang memiliki kandungan nutisi yang tinggi seperti karbohidrat, protein, lipid, dan asam amino, sehingga banyak dimanfaatkan sebagai bahan baku biodiesel, sebagai suplemen pakan ternak, dll. N. oculata memiliki ukuran sel yang sangat kecil yakni berkisar 2-8 µm dan sulit mengendap. Faktor tersebut membuat N. oculata menjadi sulit untuk dipanen. Salah satu cara yang efisien untuk pemanenan mikroalga tersebut adalah metode flokulasi dan pengoptimalan pH. Bahan flokulan yang digunakan adalah kitosan. Dengan demikian, penelitian ini bertujuan untuk mempelajari efektivitas konsentrasi kitosan untuk flokulasi N. oculata. Metode yang digunakan adalah eksperimen laboratorium, dan rancangan yang digunakan adalah rancangan faktorial dua faktor (Kitosan dan pH). Tahapan pelaksanaan penelitian dimulai dari kultur N. oculata pada wadah toples kaca selama 6 hari, diikuti dengan flokulasi, dan pengumpulan data, dan analisis data. Penelitian menggunakan dua perlakuan, yakni kitosan dan optimalisasi pH. Perlakuan dikelompokkan menjadi tiga konsentrasi diantaranya adalah 15, 20, dan 25 ppm masing-masing 3 kali pengulangan, sedangkan pH akhir yang digunakan adalah 10. Ketika flokulasi berlangsung sampel diambil pada menit ke 0, 20, dan 40 untuk mengukur efisiensi flokulasinya. Hasil penelitian menunjukkan bahwa flokulasi N. oculata menggunakan kitosan dan optimalisasi pH merupakan metode yang efektif dan mudah diterapkan, dimana hasil efisiensi flokulasi yang diperoleh telah mendekati 100% yang berarti flokulasi berhasil dilakukan. Rata-rata nilai efisiensi flokulasi sampel konsentrasi kitosan 15 ppm adalah 85,27%, konsentrasi kitosan 20 ppm adalah 99,17%, dan konsentrasi kitosan 25 ppm adalah 99,99%. N. oculata is one type of microalgae that has high nutrients, involved carbohydrates, protein, lipids and amino acids, so it is widely used as raw material for biodiesel, as a supplement to animal feed, etc. N. oculata has a very small cell size ranging from 2-8 µm and is difficult to settle. These factors make it difficult for N. oculata to be harvested. One of the efficient ways to harvest microalgae is the method of flocculation and pH optimization. The flocculant material used is chitosan. Thus, this study aims to study the effectiveness of chitosan concentration for N. oculata flocculation. The method used was a laboratory experiment, with a two-factor factorial design as the research design. The stages of the research began with the culture of N. oculata in a glass jar for 6 days, followed by flocculation, data collection, and data analysis. This study used two treatments, namely chitosan and pH optimization. The treatments were grouped into three concentrations including 15, 20, 25 ppm and each with 3 repetitions, while the final pH used was 10. During the flocculation process, samples were taken at 0, 20, and 40 minutes to measure the flocculation efficiency. The results showed that N. oculata flocculation usi
{"title":"Flokulasi Mikroalga Nannochloropsis oculata Menggunakan Kitosan dan pengoptimalan pH","authors":"Emia Sayniri Sembiring, Widianingsih Widianingsih, Endang Supriyantini","doi":"10.14710/jmr.v11i4.36241","DOIUrl":"https://doi.org/10.14710/jmr.v11i4.36241","url":null,"abstract":"N. oculata merupakan salah satu jenis mikroalga yang memiliki kandungan nutisi yang tinggi seperti karbohidrat, protein, lipid, dan asam amino, sehingga banyak dimanfaatkan sebagai bahan baku biodiesel, sebagai suplemen pakan ternak, dll. N. oculata memiliki ukuran sel yang sangat kecil yakni berkisar 2-8 µm dan sulit mengendap. Faktor tersebut membuat N. oculata menjadi sulit untuk dipanen. Salah satu cara yang efisien untuk pemanenan mikroalga tersebut adalah metode flokulasi dan pengoptimalan pH. Bahan flokulan yang digunakan adalah kitosan. Dengan demikian, penelitian ini bertujuan untuk mempelajari efektivitas konsentrasi kitosan untuk flokulasi N. oculata. Metode yang digunakan adalah eksperimen laboratorium, dan rancangan yang digunakan adalah rancangan faktorial dua faktor (Kitosan dan pH). Tahapan pelaksanaan penelitian dimulai dari kultur N. oculata pada wadah toples kaca selama 6 hari, diikuti dengan flokulasi, dan pengumpulan data, dan analisis data. Penelitian menggunakan dua perlakuan, yakni kitosan dan optimalisasi pH. Perlakuan dikelompokkan menjadi tiga konsentrasi diantaranya adalah 15, 20, dan 25 ppm masing-masing 3 kali pengulangan, sedangkan pH akhir yang digunakan adalah 10. Ketika flokulasi berlangsung sampel diambil pada menit ke 0, 20, dan 40 untuk mengukur efisiensi flokulasinya. Hasil penelitian menunjukkan bahwa flokulasi N. oculata menggunakan kitosan dan optimalisasi pH merupakan metode yang efektif dan mudah diterapkan, dimana hasil efisiensi flokulasi yang diperoleh telah mendekati 100% yang berarti flokulasi berhasil dilakukan. Rata-rata nilai efisiensi flokulasi sampel konsentrasi kitosan 15 ppm adalah 85,27%, konsentrasi kitosan 20 ppm adalah 99,17%, dan konsentrasi kitosan 25 ppm adalah 99,99%. N. oculata is one type of microalgae that has high nutrients, involved carbohydrates, protein, lipids and amino acids, so it is widely used as raw material for biodiesel, as a supplement to animal feed, etc. N. oculata has a very small cell size ranging from 2-8 µm and is difficult to settle. These factors make it difficult for N. oculata to be harvested. One of the efficient ways to harvest microalgae is the method of flocculation and pH optimization. The flocculant material used is chitosan. Thus, this study aims to study the effectiveness of chitosan concentration for N. oculata flocculation. The method used was a laboratory experiment, with a two-factor factorial design as the research design. The stages of the research began with the culture of N. oculata in a glass jar for 6 days, followed by flocculation, data collection, and data analysis. This study used two treatments, namely chitosan and pH optimization. The treatments were grouped into three concentrations including 15, 20, 25 ppm and each with 3 repetitions, while the final pH used was 10. During the flocculation process, samples were taken at 0, 20, and 40 minutes to measure the flocculation efficiency. The results showed that N. oculata flocculation usi","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43628365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-07DOI: 10.14710/jmr.v12i1.35115
Christian Jimmy, Hadi Endrawati, G. Santosa
Perairan Pantai Kartini dan Muara Wiso merupakan lokasi perairan yang tergolong banyak aktivitas manusia. Zooplankton dalam perairan adalah sebagai konsumen pertama yang memanfaatkan produksi primer yang dihasilkan oleh fitoplankton. Penelitian ini bertujuan untuk mengetahui komposisi, kelimpahan indeks keanekaragaman, indeks keseragaman, dan indeks dominasi pada perairan Pantai Kartini dan Muara Wiso. Metode dalam penelitian ini menggunakan purposive sampling untuk penentuan lokasi dan deskriptif eksploratif. Penelitian ini terbagi menjadi 4 stasiun pada masing-masing lokasi. Pengambilan sampel zooplankton dilakukan secara aktif dengan penarikan secara horizontal. Penelitian ini dilakukan pada bulan Maret 2022. Hasil penelitian ini diperoleh 27 genera zooplankton dengan 4 filum pada Pantai Kartini dan 22 genera dan 3 filum pada Muara Wiso. Kelimpahan zooplankton Pantai Kartini berkisar 85,60 – 437,39 ind/L. Kelimpahan zooplankton pada Muara Wiso sebesar 116,17–250,68 ind/L. Indeks Keanekaragaman zooplankton pada Pantai Kartini menunjukkan nilai 2.06–2.35 dan perairan Muara wiso sebesar 1,18 – 2,16 yang termasuk kategori sedang. Indeks Keseragaman zooplankton Pantai Kartini menunjukkan nilai 0,83–0,95 dan perairan Muara Wiso sebesar 0,73–0,90 termasuk kategori tinggi. Indeks Dominasi zooplankton Pantai Kartini sebesar 0,05 – 0,17 dan perairan Muara Wiso sebesar 0,10 – 0,27 termasuk dalam kategori tidak ada yang mendominasi. The waters of Kartini Beach and Muara Wiso are water locations that are classified as many human activities. Zooplankton in the waters were the first consumers to benefit from the primary production produced by phytoplankton. This study aims to determine the composition, abundance of diversity indeks, uniformity index, and dominance index in the waters of Kartini Beach and Wiso Estuary. The method in this study used purposive sampling for location determination and exploratory descriptive. This study was divided into 4 stations at each location. Zooplankton sampling is actively carried out by horizontal withdrawal. This research was conducted in March 2022. The results of this study obtained 27 zooplankton genera with 4 phylum’s on Kartini Beach and 22 genera and 3 phylums on the Wiso Estuary. The abundance of zooplankton at Kartini Beach ranges from 85.60–437.39 ind/L. Zooplankton abundance in the Wiso Estuary is 116.17–250.68 ind/L. Zooplankton Diversity Index on Kartini Beach shows a value of 2.06–2.35 and the waters of the Wiso Estuary of 1.18–2.16 which are included in the moderate category. The Kartini Beach zooplankton uniformity index shows a value of 0.83–0.95 and the wiso estuary waters of 0.73–0.90 are included in the high category. The Kartini Beach zooplankton dominance index of 0.05–0.17 and the wiso estuary waters of 0.10–0.27 are included in the category of no one dominates.
{"title":"Kajian Kelimpahan Zooplankton di Perairan Kartini Kabupaten Jepara","authors":"Christian Jimmy, Hadi Endrawati, G. Santosa","doi":"10.14710/jmr.v12i1.35115","DOIUrl":"https://doi.org/10.14710/jmr.v12i1.35115","url":null,"abstract":"Perairan Pantai Kartini dan Muara Wiso merupakan lokasi perairan yang tergolong banyak aktivitas manusia. Zooplankton dalam perairan adalah sebagai konsumen pertama yang memanfaatkan produksi primer yang dihasilkan oleh fitoplankton. Penelitian ini bertujuan untuk mengetahui komposisi, kelimpahan indeks keanekaragaman, indeks keseragaman, dan indeks dominasi pada perairan Pantai Kartini dan Muara Wiso. Metode dalam penelitian ini menggunakan purposive sampling untuk penentuan lokasi dan deskriptif eksploratif. Penelitian ini terbagi menjadi 4 stasiun pada masing-masing lokasi. Pengambilan sampel zooplankton dilakukan secara aktif dengan penarikan secara horizontal. Penelitian ini dilakukan pada bulan Maret 2022. Hasil penelitian ini diperoleh 27 genera zooplankton dengan 4 filum pada Pantai Kartini dan 22 genera dan 3 filum pada Muara Wiso. Kelimpahan zooplankton Pantai Kartini berkisar 85,60 – 437,39 ind/L. Kelimpahan zooplankton pada Muara Wiso sebesar 116,17–250,68 ind/L. Indeks Keanekaragaman zooplankton pada Pantai Kartini menunjukkan nilai 2.06–2.35 dan perairan Muara wiso sebesar 1,18 – 2,16 yang termasuk kategori sedang. Indeks Keseragaman zooplankton Pantai Kartini menunjukkan nilai 0,83–0,95 dan perairan Muara Wiso sebesar 0,73–0,90 termasuk kategori tinggi. Indeks Dominasi zooplankton Pantai Kartini sebesar 0,05 – 0,17 dan perairan Muara Wiso sebesar 0,10 – 0,27 termasuk dalam kategori tidak ada yang mendominasi. The waters of Kartini Beach and Muara Wiso are water locations that are classified as many human activities. Zooplankton in the waters were the first consumers to benefit from the primary production produced by phytoplankton. This study aims to determine the composition, abundance of diversity indeks, uniformity index, and dominance index in the waters of Kartini Beach and Wiso Estuary. The method in this study used purposive sampling for location determination and exploratory descriptive. This study was divided into 4 stations at each location. Zooplankton sampling is actively carried out by horizontal withdrawal. This research was conducted in March 2022. The results of this study obtained 27 zooplankton genera with 4 phylum’s on Kartini Beach and 22 genera and 3 phylums on the Wiso Estuary. The abundance of zooplankton at Kartini Beach ranges from 85.60–437.39 ind/L. Zooplankton abundance in the Wiso Estuary is 116.17–250.68 ind/L. Zooplankton Diversity Index on Kartini Beach shows a value of 2.06–2.35 and the waters of the Wiso Estuary of 1.18–2.16 which are included in the moderate category. The Kartini Beach zooplankton uniformity index shows a value of 0.83–0.95 and the wiso estuary waters of 0.73–0.90 are included in the high category. The Kartini Beach zooplankton dominance index of 0.05–0.17 and the wiso estuary waters of 0.10–0.27 are included in the category of no one dominates.","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46631467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-07DOI: 10.14710/jmr.v11i4.34488
Calvin Alwi, Wahyu Muzammil, S. Susiana
Perairan Dompak, Kota Tanjungpinang, Provinsi Kepulauan Riau merupakan salah satu area penangkapan krustasea, salah satunya adalah kepiting merah (Thalamita spinimana). Belum adanya penelitian terkait aspek makanan dan kebiasaan makan kepiting merah (T. spinimana) di Perairan Dompak menjadikan penelitian terkait aspek tersebut penting untuk dilakukan. Tujuan penelitian ini adalah untuk mengetahui komposisi makanan kepiting merah (T. spinimana) khususnya Perairan Dompak Kota Tanjungpinang Kepulauan Riau. Penelitian ini menggunakan metode survei. Pengambilan sampel kepiting merah (T. spinimana) dilakukan selama 2 bulan sebanyak 4 kali. Analisis data untuk mengetahui kebiasaan makanan kepiting merah (T. spinimana) menggunakan index of preponderance (IP). Hasil penelitian diketahui bahwa jumlah kepiting merah yang diperoleh sebanyak 34 ekor, terdiri dari 21 ekor kepiting merah betina dan 13 ekor kepiting merah jantan. Kelompok makanan kepiting merah (T. spinimana) terdiri dari mikroalga, krustasea, dan detritus. Hasil indeks bagian terbesar / IP diketahui bahwa makanan utama kepiting merah di Perairan Dompak adalah kerang, sedangkan makanan pelengkap adalah detritus dan fitoplankton, makanan tambahan yaitu zooplankton. Nilai indeks kepenuhan lambung kepiting merah (T. spinimana) pada waktu malam hari (1,11), pagi hari (0,96) dan siang hari (0,63). Kepiting merah (T. spinimana) di Perairan Dompak dominan melakukan aktivitas makan pada malam hari. Dompak Waters, Tanjungpinang City, Riau Islands Province is one of the areas for catching crustaceans, one of which is the red swimming crab (Thalamita spinimana). The absence of research related to food and feeding habit aspects of red swimming crab in Dompak Waters makes research related to these aspects important to do. The purpose of this study was to determine the food composition of red swimming crab, especially Dompak waters, Tanjungpinang City, Riau Islands. This study used a survey method. Sampling of red swimming crab was carried out for 2 months with 4 sampling times. Data analysis to determine the food habit of red swimming crab using the index of preponderance (IP). The results showed that the number of crabs obtained was 34, consisting of 21 female red swimming crab and 13 male red swimming crab. The red swimming crab food group consists of microalgae, crustaceans, and detritus. The results of the largest share / IP index show that the main food of red swimming crab in Dompak Waters is bivalvia, while the complementary food are detritus and phytoplankton, the additional food is zooplankton. The index value of stomach fullness of red swimming crab at night (1.11), morning (0.96) and afternoon (0.63). This result is known that the red swimming crab in Dompak waters eats predominantly at night.
{"title":"Makanan Dan Kebiasaan Makan Kepiting Merah (Thalamita spinimana, Dana 1852) Di Perairan Dompak, Tanjungpinang, Kepulauan Riau","authors":"Calvin Alwi, Wahyu Muzammil, S. Susiana","doi":"10.14710/jmr.v11i4.34488","DOIUrl":"https://doi.org/10.14710/jmr.v11i4.34488","url":null,"abstract":"Perairan Dompak, Kota Tanjungpinang, Provinsi Kepulauan Riau merupakan salah satu area penangkapan krustasea, salah satunya adalah kepiting merah (Thalamita spinimana). Belum adanya penelitian terkait aspek makanan dan kebiasaan makan kepiting merah (T. spinimana) di Perairan Dompak menjadikan penelitian terkait aspek tersebut penting untuk dilakukan. Tujuan penelitian ini adalah untuk mengetahui komposisi makanan kepiting merah (T. spinimana) khususnya Perairan Dompak Kota Tanjungpinang Kepulauan Riau. Penelitian ini menggunakan metode survei. Pengambilan sampel kepiting merah (T. spinimana) dilakukan selama 2 bulan sebanyak 4 kali. Analisis data untuk mengetahui kebiasaan makanan kepiting merah (T. spinimana) menggunakan index of preponderance (IP). Hasil penelitian diketahui bahwa jumlah kepiting merah yang diperoleh sebanyak 34 ekor, terdiri dari 21 ekor kepiting merah betina dan 13 ekor kepiting merah jantan. Kelompok makanan kepiting merah (T. spinimana) terdiri dari mikroalga, krustasea, dan detritus. Hasil indeks bagian terbesar / IP diketahui bahwa makanan utama kepiting merah di Perairan Dompak adalah kerang, sedangkan makanan pelengkap adalah detritus dan fitoplankton, makanan tambahan yaitu zooplankton. Nilai indeks kepenuhan lambung kepiting merah (T. spinimana) pada waktu malam hari (1,11), pagi hari (0,96) dan siang hari (0,63). Kepiting merah (T. spinimana) di Perairan Dompak dominan melakukan aktivitas makan pada malam hari. Dompak Waters, Tanjungpinang City, Riau Islands Province is one of the areas for catching crustaceans, one of which is the red swimming crab (Thalamita spinimana). The absence of research related to food and feeding habit aspects of red swimming crab in Dompak Waters makes research related to these aspects important to do. The purpose of this study was to determine the food composition of red swimming crab, especially Dompak waters, Tanjungpinang City, Riau Islands. This study used a survey method. Sampling of red swimming crab was carried out for 2 months with 4 sampling times. Data analysis to determine the food habit of red swimming crab using the index of preponderance (IP). The results showed that the number of crabs obtained was 34, consisting of 21 female red swimming crab and 13 male red swimming crab. The red swimming crab food group consists of microalgae, crustaceans, and detritus. The results of the largest share / IP index show that the main food of red swimming crab in Dompak Waters is bivalvia, while the complementary food are detritus and phytoplankton, the additional food is zooplankton. The index value of stomach fullness of red swimming crab at night (1.11), morning (0.96) and afternoon (0.63). This result is known that the red swimming crab in Dompak waters eats predominantly at night.","PeriodicalId":50153,"journal":{"name":"Journal of Marine Research","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45616213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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