Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i01.p08
Rowand Danny Sebastian Adinegoro, I. Putra, I. Putra
Provinsi Bali merupakan salah satu persebaran hutan mangrove di Indonesia yang tersebar pada tiga lokasi salah satunya Tahura Ngurah Rai. Pada kawasan mangrove di Tahura Ngurah Rai khusunya Kota Denpasar terjadi kematian mangrove akibat dari aktivitas manusia dan faktor alam sehingga perlu dilakukan monitoring tentang sebaran dan luasan mangrove di kawasan tersebut. Penginderaan jauh merupakan salah satu teknologi yang dapat digunakan untuk pemantauan luasan dan sebaran mangrove di kawasan Tahura Ngurah Rai. Tujuan dari penelitian ini adalah mengetahui kombinasi band terbaik pada citra Sentinel-2A dalam mendeteksi tutupan lahan khususnya mangrove yang kemudian di gunakan untuk memetakan luasan mangrove pasca terjadinya kematian mangrove. Kombinasi band yang diuji adalah kombinasi band 4-3-2, 11-8-4 dan 8-11-2 pada citra Sentinel-2A. Hasil penelitian ini menunjukan nilai akurasi pembuat (PA) serta akurasi pengguna (UA) pada kelas mangrove kombinasi band 4-3-2 (PA= 92.59 %, UA= 98.04 %), 11-8-4 (PA= 85.19 %, UA= 88.46 %) dan 8-11-2 (PA= 71.15 %, UA= 84.09 %). Kesimpulan dari penelitian ini adalah kombinasi band 4-3-2 mampu mendeteksi mangrove lebih baik dari kombinasi band 11-8-4 dan 8-11-2 dengan akurasi total dan akurasi kappa massing-masing sebesar 91.24 % dan 91.15 %. Hutan mangrove di kawasan Tahura Ngurah Rai Kota Denpasar mengalami penuruan luasan hutan mangrove sebesar 25.58 Ha dalam kurun waktu 4 tahun yakni pada tahun 2016 (sebelum terjadinya kematian) hingga tahun 2020 (pasca terjadinya kematian).
{"title":"Pemetaan Perubahan Luasan Mangrove Menggunakan Citra Sentinel-2A Pasca Kematian Massal Mangrove di Denpasar-Bali","authors":"Rowand Danny Sebastian Adinegoro, I. Putra, I. Putra","doi":"10.24843/jmas.2022.v08.i01.p08","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i01.p08","url":null,"abstract":"Provinsi Bali merupakan salah satu persebaran hutan mangrove di Indonesia yang tersebar pada tiga lokasi salah satunya Tahura Ngurah Rai. Pada kawasan mangrove di Tahura Ngurah Rai khusunya Kota Denpasar terjadi kematian mangrove akibat dari aktivitas manusia dan faktor alam sehingga perlu dilakukan monitoring tentang sebaran dan luasan mangrove di kawasan tersebut. Penginderaan jauh merupakan salah satu teknologi yang dapat digunakan untuk pemantauan luasan dan sebaran mangrove di kawasan Tahura Ngurah Rai. Tujuan dari penelitian ini adalah mengetahui kombinasi band terbaik pada citra Sentinel-2A dalam mendeteksi tutupan lahan khususnya mangrove yang kemudian di gunakan untuk memetakan luasan mangrove pasca terjadinya kematian mangrove. Kombinasi band yang diuji adalah kombinasi band 4-3-2, 11-8-4 dan 8-11-2 pada citra Sentinel-2A. Hasil penelitian ini menunjukan nilai akurasi pembuat (PA) serta akurasi pengguna (UA) pada kelas mangrove kombinasi band 4-3-2 (PA= 92.59 %, UA= 98.04 %), 11-8-4 (PA= 85.19 %, UA= 88.46 %) dan 8-11-2 (PA= 71.15 %, UA= 84.09 %). Kesimpulan dari penelitian ini adalah kombinasi band 4-3-2 mampu mendeteksi mangrove lebih baik dari kombinasi band 11-8-4 dan 8-11-2 dengan akurasi total dan akurasi kappa massing-masing sebesar 91.24 % dan 91.15 %. Hutan mangrove di kawasan Tahura Ngurah Rai Kota Denpasar mengalami penuruan luasan hutan mangrove sebesar 25.58 Ha dalam kurun waktu 4 tahun yakni pada tahun 2016 (sebelum terjadinya kematian) hingga tahun 2020 (pasca terjadinya kematian).","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45922864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i02.p05
Ayub Sugara, Amelia Suryanita, Alfiqi Maulana, Ari Anggoro, V. Siregar
Coral reefs are one of the important ecosystems that need data inventory in order to manage marine resources both spatially and temporally. Remote sensing with drone technology is one of the vehicles for collecting data related to coral reef ecosystems in real time. Along with the times, drones are widely used in research both in terrestrial and in coastal areas. This research was conducted on December 4 – 10, 2018 in the Karang Lebar, Seribu Islands, Jakarta. The purpose of this research was to explored the ability of drones as a vehicle to complement field survey data for coral reef mapping. In addition, conducting a pixel-based analysis for coral reef classification based on WorldView-2 satellite imagery using field survey data and additional data from drone data. Based on the results of the study, information was obtained that drone imagery can help visual interpretation in detecting coral reefs. Thus, field survey data that are not covered in the research area can be assisted by the use of drones as a complementary vehicle for field survey data. The coral reef classification process using WorldView-2 imagery can be mapped well. Drone imagery has proven to be an alternative in field data collection as a training area in identifying coral reef objects, such as with massive coral lifeforms that can be clearly seen from drone images. It's just that visual interpretation is limited because of the water column, making it difficult to identify objects.
{"title":"Aplikasi Teknologi Drone Sebagai Pelengkap Data Survei Lapang Untuk Pemetaan Ekosistem Terumbu Karang Menggunakan Citra Worldview-2","authors":"Ayub Sugara, Amelia Suryanita, Alfiqi Maulana, Ari Anggoro, V. Siregar","doi":"10.24843/jmas.2022.v08.i02.p05","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i02.p05","url":null,"abstract":"Coral reefs are one of the important ecosystems that need data inventory in order to manage marine resources both spatially and temporally. Remote sensing with drone technology is one of the vehicles for collecting data related to coral reef ecosystems in real time. Along with the times, drones are widely used in research both in terrestrial and in coastal areas. This research was conducted on December 4 – 10, 2018 in the Karang Lebar, Seribu Islands, Jakarta. The purpose of this research was to explored the ability of drones as a vehicle to complement field survey data for coral reef mapping. In addition, conducting a pixel-based analysis for coral reef classification based on WorldView-2 satellite imagery using field survey data and additional data from drone data. Based on the results of the study, information was obtained that drone imagery can help visual interpretation in detecting coral reefs. Thus, field survey data that are not covered in the research area can be assisted by the use of drones as a complementary vehicle for field survey data. The coral reef classification process using WorldView-2 imagery can be mapped well. Drone imagery has proven to be an alternative in field data collection as a training area in identifying coral reef objects, such as with massive coral lifeforms that can be clearly seen from drone images. It's just that visual interpretation is limited because of the water column, making it difficult to identify objects.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44204046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i02.p04
A. Sari, I. Kartika
Tukad Badung is a large river in Bali that crosses Denpasar City which is densely populated and has a variety of activities: household activities, agriculture, animal husbandry, hotels, hospitals and industry. These various activities result in the entry of various heavy metals into the river water, including Arsenic (As), which eventually settles in the sediment. Arsenic has high toxicity and is included in Endocrine Disrupting Chemicals (EDCs). Information related to the presence of Arsenic in waters and sediment is very necessary to prevent its negative impact on ecosystems and human health. This research method is descriptive. Arsenic was 0.769 mg/L at point I, was not detected at points II and III, while at point IV Arsenic was measured at 0.081 mg/L. Arsenic (As) at point I and IV exceeded the threshold set based on PP number 82 of 2001 concerning Water Quality Management and Water Pollution Control, because it measured > 0.05 mg/L. The content of Arsenic (As) in downstream river sediment Tukad Badung, taken at point IV, measured 22.895 mg/kg; this value has also exceeded the threshold.
{"title":"Peringatan Dini Keberadaan Arsen (As) pada Air dan Sedimen di Hilir Sungai Tukad Badung, Bali","authors":"A. Sari, I. Kartika","doi":"10.24843/jmas.2022.v08.i02.p04","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i02.p04","url":null,"abstract":"Tukad Badung is a large river in Bali that crosses Denpasar City which is densely populated and has a variety of activities: household activities, agriculture, animal husbandry, hotels, hospitals and industry. These various activities result in the entry of various heavy metals into the river water, including Arsenic (As), which eventually settles in the sediment. Arsenic has high toxicity and is included in Endocrine Disrupting Chemicals (EDCs). Information related to the presence of Arsenic in waters and sediment is very necessary to prevent its negative impact on ecosystems and human health. This research method is descriptive. Arsenic was 0.769 mg/L at point I, was not detected at points II and III, while at point IV Arsenic was measured at 0.081 mg/L. Arsenic (As) at point I and IV exceeded the threshold set based on PP number 82 of 2001 concerning Water Quality Management and Water Pollution Control, because it measured > 0.05 mg/L. The content of Arsenic (As) in downstream river sediment Tukad Badung, taken at point IV, measured 22.895 mg/kg; this value has also exceeded the threshold.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49219083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i02.p03
M. A. Pratiwi, G. Kartika
Longtail Tuna (Thunnus tonggol) in the waters of the Bali Strait is a by-catch fish, so that information on this fish resource was still very lacking and its management of longtail tuna was often neglected. The aimed of this study is to predict the signs of the unsustainability of longtail tuna resources based on growth aspects which include the distribution of length frequency, estimation of age groups, growth patterns and growth parameters. Data collection was carried out from December 2018 to February 2019. The growth pattern estimated by relationship of length and weight, cohort was identified using an analytical model based on the FISAT program (FAO I-CLARM Stock Assessment Tools) and growth parameters were analyzed using the Von Bertalanffy growth model. It can be seen that, the catch is dominated by the size of the fish that have matured gonads or adults (69% females and 73% males). The growth pattern of female and male of longtail tuna is negative allometric (length growth is more dominant than weight). So it can be assumed that there is an inconvenience in environmental conditions and competition in fighting for food and space in the waters of the Bali Strait.Longtail tuna had asymptotic length values of 784.71 mm (female) and 738.04 mm (male) with growth coefficients of 0.13 (female) and 0.18 (male). The growth performance inteprated as quite high when compared to other waters in Indonesia.
{"title":"Pertumbuhan Ikan Tongkol Abu-Abu (Thunnus tonggol Bleeker, 1851) yang Tertangkap di Perairan Selat Bali","authors":"M. A. Pratiwi, G. Kartika","doi":"10.24843/jmas.2022.v08.i02.p03","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i02.p03","url":null,"abstract":"Longtail Tuna (Thunnus tonggol) in the waters of the Bali Strait is a by-catch fish, so that information on this fish resource was still very lacking and its management of longtail tuna was often neglected. The aimed of this study is to predict the signs of the unsustainability of longtail tuna resources based on growth aspects which include the distribution of length frequency, estimation of age groups, growth patterns and growth parameters. Data collection was carried out from December 2018 to February 2019. The growth pattern estimated by relationship of length and weight, cohort was identified using an analytical model based on the FISAT program (FAO I-CLARM Stock Assessment Tools) and growth parameters were analyzed using the Von Bertalanffy growth model. It can be seen that, the catch is dominated by the size of the fish that have matured gonads or adults (69% females and 73% males). The growth pattern of female and male of longtail tuna is negative allometric (length growth is more dominant than weight). So it can be assumed that there is an inconvenience in environmental conditions and competition in fighting for food and space in the waters of the Bali Strait.Longtail tuna had asymptotic length values of 784.71 mm (female) and 738.04 mm (male) with growth coefficients of 0.13 (female) and 0.18 (male). The growth performance inteprated as quite high when compared to other waters in Indonesia.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49454328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i02.p01
D. Pebriani, N. Wijayanti, Putu Eka Sudaryatma, Octovianus Octovianus
Tilapia (Oreochromis niloticus) is one of the freshwater fish commodities with important economic value. However, in tilapia aquaculture, the emergence of disease was one of the problems that affect the quality and quantity of aquaculture production. One of the diseases that often appears was infection with Aeromonas hydrophila bacteria. This problem is expected to be overcome by giving vitamin C in fish feed. Through the provision of vitamin C, it will be able to increase the fish's immune system which is directly related to the fish's ability to prevent or treat disease attacks that arise, especially from Aeromonas hydrophila bacteria. The aim of this study was to determine the response of vitamin C to the immune system of fish infected with Aeromonas hydrophila so that the best dose was known that could be applied in the treatment of Aeromonas hydrophyla bacteria attack. The study was conducted using an experimental method with a completely randomized design (CRD) consisted of 2 controls, namely positive control and negative control, and 3 treatments with different doses of vitamin C. Based on the hematological test, the results showed that the content of white blood cells, red blood cells, and hemoglobin were still in the normal range for all treatments. Treatment E with a dose of 450 mg/kg vitamin C was able to increase the immune system of tilapia infected with Aeromonas hydrophila bacteria, shown from the content of white blood cells, red blood cells and hemoglobin in the highest treatment E compared to other treatments.
{"title":"Respon Imun Ikan Nila (Oreochromis niloticus) Yang Terinfeksi Bakteri (Aeromonas hydrophila) Dengan Penambahan Vitamin C Pada Pakan","authors":"D. Pebriani, N. Wijayanti, Putu Eka Sudaryatma, Octovianus Octovianus","doi":"10.24843/jmas.2022.v08.i02.p01","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i02.p01","url":null,"abstract":"Tilapia (Oreochromis niloticus) is one of the freshwater fish commodities with important economic value. However, in tilapia aquaculture, the emergence of disease was one of the problems that affect the quality and quantity of aquaculture production. One of the diseases that often appears was infection with Aeromonas hydrophila bacteria. This problem is expected to be overcome by giving vitamin C in fish feed. Through the provision of vitamin C, it will be able to increase the fish's immune system which is directly related to the fish's ability to prevent or treat disease attacks that arise, especially from Aeromonas hydrophila bacteria. The aim of this study was to determine the response of vitamin C to the immune system of fish infected with Aeromonas hydrophila so that the best dose was known that could be applied in the treatment of Aeromonas hydrophyla bacteria attack. The study was conducted using an experimental method with a completely randomized design (CRD) consisted of 2 controls, namely positive control and negative control, and 3 treatments with different doses of vitamin C. Based on the hematological test, the results showed that the content of white blood cells, red blood cells, and hemoglobin were still in the normal range for all treatments. Treatment E with a dose of 450 mg/kg vitamin C was able to increase the immune system of tilapia infected with Aeromonas hydrophila bacteria, shown from the content of white blood cells, red blood cells and hemoglobin in the highest treatment E compared to other treatments.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46270985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i01.p05
Ni Wayan Sintaningsih, Eloq Faiqoh, I. Putra
Selat Makassar merupakan lintasan pertama arlindo yang dimana lintasan pertama ini sebagaian besar mentransfer air yang kemudian menuju selat Lombok. Arus lintas Indonesia ini membuat perairan Indonesia terutama bagian timur menjadi subur akibat adanya proses upwelling dan proses pencampuran serta interaksi air dengan udara yang menyebabkan kandungan nutrisi dan mineral menjadi kaya pada lapisan laut dalam. Beberapa penelitian tentang plankton di Selat Makassar masih berkisar tentang klorofil- a sedangkan penelitian tentang plankton sendiri masih belum ada. Oleh karena itu, penelitian tentang distrubusi spasial plankton di selat makassar penting dilakukan yang dapat digunakan sebagai informasi dasar tentang pengaruh arlindo terhadap struktur komunitas plankton di selat makassar. Metode pengambilan plankton menggunakan metode tuang. Metode ini dilakukan dengan mengambil air dengan menggunakan alat water sampler sebanyak 30 liter pada kedalaman 0 meter, 100 meter dan 250 meter. Fitoplankton yang ditemukan di Selat Makassar yaitu Kelas Bacillariophyceae yang sering ditemukan dengan kelimpahan yang tinggi dengan genus Chaetoceros dan Nitzhia.dari kelas Cyanophyceae yang sering ditemukan dengan kelimpahan relative tinggi adalah Oscillatoria sedangkan kelas Chlorophyceae yang ditemukan adalah genus Chroococus. Sedangkan zooplankton yang ditemukan di Selat Makassar yaitu Kelas hexanaupilia yang sering ditemukan dengan kelimpahan relatif tinggi yaitu genus Cyclops. Kelas Malacostraca yang ditemukan di Selat Makassar yaitu Naupiliisedangkan kelas Maxilopoda yang ditemukan di Selat Makassar yaitu genus Copepod.
{"title":"spatial distribution of plankton in makassar strait","authors":"Ni Wayan Sintaningsih, Eloq Faiqoh, I. Putra","doi":"10.24843/jmas.2022.v08.i01.p05","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i01.p05","url":null,"abstract":"Selat Makassar merupakan lintasan pertama arlindo yang dimana lintasan pertama ini sebagaian besar mentransfer air yang kemudian menuju selat Lombok. Arus lintas Indonesia ini membuat perairan Indonesia terutama bagian timur menjadi subur akibat adanya proses upwelling dan proses pencampuran serta interaksi air dengan udara yang menyebabkan kandungan nutrisi dan mineral menjadi kaya pada lapisan laut dalam. Beberapa penelitian tentang plankton di Selat Makassar masih berkisar tentang klorofil- a sedangkan penelitian tentang plankton sendiri masih belum ada. Oleh karena itu, penelitian tentang distrubusi spasial plankton di selat makassar penting dilakukan yang dapat digunakan sebagai informasi dasar tentang pengaruh arlindo terhadap struktur komunitas plankton di selat makassar. Metode pengambilan plankton menggunakan metode tuang. Metode ini dilakukan dengan mengambil air dengan menggunakan alat water sampler sebanyak 30 liter pada kedalaman 0 meter, 100 meter dan 250 meter. Fitoplankton yang ditemukan di Selat Makassar yaitu Kelas Bacillariophyceae yang sering ditemukan dengan kelimpahan yang tinggi dengan genus Chaetoceros dan Nitzhia.dari kelas Cyanophyceae yang sering ditemukan dengan kelimpahan relative tinggi adalah Oscillatoria sedangkan kelas Chlorophyceae yang ditemukan adalah genus Chroococus. Sedangkan zooplankton yang ditemukan di Selat Makassar yaitu Kelas hexanaupilia yang sering ditemukan dengan kelimpahan relatif tinggi yaitu genus Cyclops. Kelas Malacostraca yang ditemukan di Selat Makassar yaitu Naupiliisedangkan kelas Maxilopoda yang ditemukan di Selat Makassar yaitu genus Copepod.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45980952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i01.p06
Putu Natalia Sarasvati, I. N. W. Putra, W. Widiastuti
Karang hidup bersimbiosis tidak hanya dengan zooxanthella tetapi juga dengan berbagai komunitas mikroorganisme yaitu bakteri. Keberadaan bakteri di karang berperan sebagai penyedia nutrient bagi hewan karang. Salah satu adaptasi yang dilakukan oleh karang terhadap perubahan lingkungan yaitu dengan mensekresikan mukus. Mukus memberikan ruang hidup bagi berbagai jenis bakteri. Karang Acropora merupakan salah satu karang pembangun dan terluas di ekosistem karang, mudah beradaptasi dan memiliki tingkat pemulihan yang cepat dari pemutihan karang. Tujuan pada penelitian ini yaitu mengetahui komunitas bakteri yang berasosiasi pada mukus karang A. horrida. Identifikasi bakteri dilakukan berdasarkan hasil pengamatan uji morfologi koloni dan uji biokimia. Hasil penelitian ini menunjukan 6 isolat bakteri mukus karang A. horrida rata-rata memiliki bentuk bulat dengan pinggiran utuh, elevasi datar, dan berwarna putih dengan teksur yang halus. Pada keenam isolat bakteri menunjukan hasil negatif dimana tidak terdapat gelembung. Pada hasil uji oksidase menunjukan 3 negatif dengan tidak ada perubahan warna dan 3 positif dengan adanya perubahan warna menjadi violet. Pada uji pewarnaan gram terdapat 2 isolat gram negatif dan 4 isolat gram positif. Karakteristik dari keenam isolat bakteri yang berasosiasi pada mukus karang A. horrida yang diidentifikasi diantaranya yaitu famili Micrococcaceae, Lactobacillaceae, Clostridiaceae, dan Rhizobiaceae. Diduga bakteri-bakteri tersebut bersifat oportunistik, dimana kepadatannya akan meningkat jika terdapat bahan pencemar ke ekosistem terumbu karang seperti bahan organik dan nitrogen yang dapat meningkatkan pertumbuhannya.
{"title":"Komunitas Bakteri Yang Berasosiasi Dengan Karang Acropora horrida","authors":"Putu Natalia Sarasvati, I. N. W. Putra, W. Widiastuti","doi":"10.24843/jmas.2022.v08.i01.p06","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i01.p06","url":null,"abstract":"Karang hidup bersimbiosis tidak hanya dengan zooxanthella tetapi juga dengan berbagai komunitas mikroorganisme yaitu bakteri. Keberadaan bakteri di karang berperan sebagai penyedia nutrient bagi hewan karang. \u0000Salah satu adaptasi yang dilakukan oleh karang terhadap perubahan lingkungan yaitu dengan mensekresikan mukus. Mukus memberikan ruang hidup bagi berbagai jenis bakteri. \u0000 Karang Acropora merupakan salah satu karang pembangun dan terluas di ekosistem karang, mudah beradaptasi dan memiliki tingkat pemulihan yang cepat dari pemutihan karang. Tujuan pada penelitian ini yaitu mengetahui komunitas bakteri yang berasosiasi pada mukus karang A. horrida. Identifikasi bakteri dilakukan berdasarkan hasil pengamatan uji morfologi koloni dan uji biokimia. Hasil penelitian ini menunjukan 6 isolat bakteri mukus karang A. horrida rata-rata memiliki bentuk bulat dengan pinggiran utuh, elevasi datar, dan berwarna putih dengan teksur yang halus. Pada keenam isolat bakteri menunjukan hasil negatif dimana tidak terdapat gelembung. Pada hasil uji oksidase menunjukan 3 negatif dengan tidak ada perubahan warna dan 3 positif dengan adanya perubahan warna menjadi violet. Pada uji pewarnaan gram terdapat 2 isolat gram negatif dan 4 isolat gram positif. Karakteristik dari keenam isolat bakteri yang berasosiasi pada mukus karang A. horrida yang diidentifikasi diantaranya yaitu famili Micrococcaceae, Lactobacillaceae, Clostridiaceae, dan Rhizobiaceae. Diduga bakteri-bakteri tersebut bersifat oportunistik, dimana kepadatannya akan meningkat jika terdapat bahan pencemar ke ekosistem terumbu karang seperti bahan organik dan nitrogen yang dapat meningkatkan pertumbuhannya.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43721465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i01.p07
Komang Iwan Suniada
Predicted fishing ground maps (PPDPI) which made using satellite image data is often constrained by clouds, causing its production not too optimal. Rolling mosaic methods examined here is expected to reduce cloud cover so the information about oceanographic conditions can be more visible and can increasing PPDPI production. In July, the percentage of sea surface temperature data can increase from 15.3%-30.29% using 1-day mosaic data, to 40.46%-56.75% using 3-day mosaic, it increases to 72.24%-77.88% using 7-day mosaic data and increase to 84.19%-89.07% using 14-day mosaic. While the percentage of sea surface temperature data in December can be increased from around 4.93%-13.03% to 41.48%- 51.60%. In general, at July and December, the relationship between 1-day mosaic and 3-days mosaic data, 7-days and 14-days are very strong, but the strength of the relationship will decrease (the correlation coefficient gets smaller) along with the increasing of the time range used to mosaicking the data. The RMSE shows that the RMSE between the 1-day mosaic with 3-days mosaic is 0.288 (July), 0.263 (December); RMSE between 1-day mosaic and 7-days mosaic is 0.388 (July), 0.387 (December) and RMSE between 1-day mosaic and 14-days mosaic is 0.471 (July), 0.477 (December). This RMSE values shows that the longer time range used to construct the mosaic, the error value will also increase. Scoring analysis using percentage of data, correlation coefficient and RMSE as a parameters indicate that the 7-days mosaic method has the highest score so it is considered as the best method to be used to predict sea surface temperature with minimum cloud cover.
{"title":"Penggunaan Metode Rolling Mosaic Untuk Mendukung Pengembangan Peta Prakiraan Daerah Penangkapan Ikan Wilayah Pesisir","authors":"Komang Iwan Suniada","doi":"10.24843/jmas.2022.v08.i01.p07","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i01.p07","url":null,"abstract":"Predicted fishing ground maps (PPDPI) which made using satellite image data is often constrained by clouds, causing its production not too optimal. Rolling mosaic methods examined here is expected to reduce cloud cover so the information about oceanographic conditions can be more visible and can increasing PPDPI production. In July, the percentage of sea surface temperature data can increase from 15.3%-30.29% using 1-day mosaic data, to 40.46%-56.75% using 3-day mosaic, it increases to 72.24%-77.88% using 7-day mosaic data and increase to 84.19%-89.07% using 14-day mosaic. While the percentage of sea surface temperature data in December can be increased from around 4.93%-13.03% to 41.48%- 51.60%. In general, at July and December, the relationship between 1-day mosaic and 3-days mosaic data, 7-days and 14-days are very strong, but the strength of the relationship will decrease (the correlation coefficient gets smaller) along with the increasing of the time range used to mosaicking the data. The RMSE shows that the RMSE between the 1-day mosaic with 3-days mosaic is 0.288 (July), 0.263 (December); RMSE between 1-day mosaic and 7-days mosaic is 0.388 (July), 0.387 (December) and RMSE between 1-day mosaic and 14-days mosaic is 0.471 (July), 0.477 (December). This RMSE values shows that the longer time range used to construct the mosaic, the error value will also increase. Scoring analysis using percentage of data, correlation coefficient and RMSE as a parameters indicate that the 7-days mosaic method has the highest score so it is considered as the best method to be used to predict sea surface temperature with minimum cloud cover.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43883119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i02.p02
Devi Ulinuha, Ima Yudha Perwira
Lead is one of inorganic material causes pollution in waters that have a high level of toxicity for organisms. Lead pollution in waters can be accumulated by several water organisms, such as Bivalves. Bivalves are type of shellfish that can accumulate heavy metals. This study aimed to know the bioaccumulation of Lead on the Bivalves (Anadara antiquata, Anadara granosa dan Perna viridis) found in Lekok water (Pasuruan, Jawa Timur). The amount of Lead in the water, sediment and Bivalves was measured by using Atomic Absorption Spectro-photometer (AAS). The bioaccumulation of Lead on the Bivalves was analyzed by using Bioconcentration Factor (BCF). The result showed that amount of Lead in the water and sediment were 0,356 mg/L and 21,245 mg/kg, respectively. The BCF value of Lead on the Bivalves of Lekok waters were <30 indicating low accumulation level.
{"title":"Bioakumulasi Timbal (Pb) pada Bivalvia (Anadara antiquata, Anadara granosa dan Perna viridis) dari Perairan Lekok, Pasuruan","authors":"Devi Ulinuha, Ima Yudha Perwira","doi":"10.24843/jmas.2022.v08.i02.p02","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i02.p02","url":null,"abstract":"Lead is one of inorganic material causes pollution in waters that have a high level of toxicity for organisms. Lead pollution in waters can be accumulated by several water organisms, such as Bivalves. Bivalves are type of shellfish that can accumulate heavy metals. This study aimed to know the bioaccumulation of Lead on the Bivalves (Anadara antiquata, Anadara granosa dan Perna viridis) found in Lekok water (Pasuruan, Jawa Timur). The amount of Lead in the water, sediment and Bivalves was measured by using Atomic Absorption Spectro-photometer (AAS). The bioaccumulation of Lead on the Bivalves was analyzed by using Bioconcentration Factor (BCF). The result showed that amount of Lead in the water and sediment were 0,356 mg/L and 21,245 mg/kg, respectively. The BCF value of Lead on the Bivalves of Lekok waters were <30 indicating low accumulation level.","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42140963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-30DOI: 10.24843/jmas.2022.v08.i01.p09
I. P. O. Saduarsa, I. P. Dirgayusa, Ni Luh Putu Ria Puspitha
Keberadaan penyu di alam khususnya di bali, sudah dapat dikatakan terancam punah. Pulau penyu Moon cot sari adalah salah satu objek wisata yang melakukan kegiatan konservasi terhadap penyu. Pariwisata pulau penyu ini lebih memberikan edukasi tentang penyu kepada wisatawan yang berkunjung. Objek wisata pulau penyu saat ini masih dalam tahap pengembangan menjadi destinasi ekowisata. Ekowisata didefinisikan sebagai suatu bentuk wisata yang menekankan tanggung jawab terhadap kelestarian alam, memberi manfaat secara ekonomi dan mempertahankan keutuhan budaya bagi masyarakat setempat. Pengembangan objek wisata pulau penyu menjadi destinasi ekowisata harus dilihat dari pelaksanaan prinsip-prinsip ekowisata itu sendiri seperti konservasi, pendidikan, pariwisata, ekonomi, pastisipasi masyarakat dengan menggabungkan jawaban dari wisatawan, staff, stakeholder dan masyarakat. Metode pengambilan data menggunakan sistem wawancara menggunakan media kuisioner tertutup dan output dari penelitian ini berupa nilai deskriptif persentase. Jumlah responden berjumlah 450 wisatawan, 15 orang staff dan 15 orang masyarakat setempat. Pengambilan sampel dilakukan selama 1,5 bulan, dimulai dari bulan Januari hingga Maret 2019 pada setiap hari minggu karena bertepatan periode high season pada bulan tersebut. Hasil pada kuisioner bahwa rata-rata 80% responden menjawab telah mendapatkan wawasan tentang penyu dan lebih mengerti tentang pelestarian penyu (unsur pendidikan), rata-rata 75,5% responden menjawab pulau penyu telah memiliki fasilitas yang memadai sehingga memberikan kesan wisata yang menyenangkan (unsur pariwisata), 100% responden staf dan stakeholder mengatakan pulau penyu telah memberikan dampak ekonomi yang lebih baik (unsur ekonomi), 100% responden masyarakat mengatakan bahwa mereka ikut serta dalam melakukan pelestarian penyu dan lingkungan hutan mangrove setempat (unsur partisipasi masyarakat dan konservasi).
{"title":"PENGEMBANGAN EKOWISATA DI PULAU PENYU TANJUNG BENOA BALI BERDASARKAN PRINSIP-PRINSIP EKOWISATA","authors":"I. P. O. Saduarsa, I. P. Dirgayusa, Ni Luh Putu Ria Puspitha","doi":"10.24843/jmas.2022.v08.i01.p09","DOIUrl":"https://doi.org/10.24843/jmas.2022.v08.i01.p09","url":null,"abstract":"Keberadaan penyu di alam khususnya di bali, sudah dapat dikatakan terancam punah. Pulau penyu Moon cot sari adalah salah satu objek wisata yang melakukan kegiatan konservasi terhadap penyu. Pariwisata pulau penyu ini lebih memberikan edukasi tentang penyu kepada wisatawan yang berkunjung. Objek wisata pulau penyu saat ini masih dalam tahap pengembangan menjadi destinasi ekowisata. Ekowisata didefinisikan sebagai suatu bentuk wisata yang menekankan tanggung jawab terhadap kelestarian alam, memberi manfaat secara ekonomi dan mempertahankan keutuhan budaya bagi masyarakat setempat. Pengembangan objek wisata pulau penyu menjadi destinasi ekowisata harus dilihat dari pelaksanaan prinsip-prinsip ekowisata itu sendiri seperti konservasi, pendidikan, pariwisata, ekonomi, pastisipasi masyarakat dengan menggabungkan jawaban dari wisatawan, staff, stakeholder dan masyarakat. Metode pengambilan data menggunakan sistem wawancara menggunakan media kuisioner tertutup dan output dari penelitian ini berupa nilai deskriptif persentase. Jumlah responden berjumlah 450 wisatawan, 15 orang staff dan 15 orang masyarakat setempat. Pengambilan sampel dilakukan selama 1,5 bulan, dimulai dari bulan Januari hingga Maret 2019 pada setiap hari minggu karena bertepatan periode high season pada bulan tersebut. Hasil pada kuisioner bahwa rata-rata 80% responden menjawab telah mendapatkan wawasan tentang penyu dan lebih mengerti tentang pelestarian penyu (unsur pendidikan), rata-rata 75,5% responden menjawab pulau penyu telah memiliki fasilitas yang memadai sehingga memberikan kesan wisata yang menyenangkan (unsur pariwisata), 100% responden staf dan stakeholder mengatakan pulau penyu telah memberikan dampak ekonomi yang lebih baik (unsur ekonomi), 100% responden masyarakat mengatakan bahwa mereka ikut serta dalam melakukan pelestarian penyu dan lingkungan hutan mangrove setempat (unsur partisipasi masyarakat dan konservasi).","PeriodicalId":30849,"journal":{"name":"Journal of Marine and Aquatic Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46377310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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