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Showing 1 - 64 of 64 Journals sorted by number of followers
Hydrobiology     Open Access   (Followers: 39)
Deep Sea Research Part II: Topical Studies in Oceanography     Hybrid Journal   (Followers: 28)
Limnology and Oceanography     Hybrid Journal   (Followers: 26)
Estuaries and Coasts     Hybrid Journal   (Followers: 25)
Deep Sea Research Part I : Oceanographic Research Papers     Hybrid Journal   (Followers: 23)
Journal of Physical Oceanography     Hybrid Journal   (Followers: 21)
New Zealand Journal of Marine and Freshwater Research     Hybrid Journal   (Followers: 19)
Journal of Marine Biology & Oceanography     Hybrid Journal   (Followers: 19)
Progress in Oceanography     Hybrid Journal   (Followers: 18)
Coastal Engineering     Hybrid Journal   (Followers: 16)
Advances in Oceanography and Limnology     Open Access   (Followers: 16)
Maritime Studies     Open Access   (Followers: 13)
Journal of Oceanography     Hybrid Journal   (Followers: 12)
Advances in Statistical Climatology, Meteorology and Oceanography     Open Access   (Followers: 10)
Bulletin of Marine Science     Full-text available via subscription   (Followers: 9)
Atmospheric and Oceanic Science Letters     Open Access   (Followers: 9)
Fisheries Oceanography     Hybrid Journal   (Followers: 8)
Physical Oceanography     Hybrid Journal   (Followers: 6)
Open Journal of Marine Science     Open Access   (Followers: 6)
Limnology and Oceanography: Fluids and Environments     Full-text available via subscription   (Followers: 6)
Journal of Oceanography and Marine Science     Open Access   (Followers: 6)
Oceanography : Open Access     Open Access   (Followers: 6)
Limnology and Oceanography: Methods     Hybrid Journal   (Followers: 6)
Paleoceanography and Paleoclimatology     Full-text available via subscription   (Followers: 5)
Marine Science     Open Access   (Followers: 5)
Journal of Oceanology and Limnology     Hybrid Journal   (Followers: 4)
Journal of Coastal Development     Open Access   (Followers: 4)
Journal of Marine Science and Engineering     Open Access   (Followers: 4)
Ocean Yearbook Online     Hybrid Journal   (Followers: 4)
Limnology and Oceanography Letters     Open Access   (Followers: 4)
African Journal of Marine Science     Hybrid Journal   (Followers: 3)
Journal of Marine Science and Application     Hybrid Journal   (Followers: 3)
Oceanology     Hybrid Journal   (Followers: 3)
Journal of Operational Oceanography     Hybrid Journal   (Followers: 3)
Journal of Aquatic Sciences     Full-text available via subscription   (Followers: 3)
Journal of Ocean Engineering and Marine Energy     Hybrid Journal   (Followers: 3)
Limnology and Oceanography e-Lectures     Open Access   (Followers: 3)
Development and Applications of Oceanic Engineering     Open Access   (Followers: 2)
Regional Studies in Marine Science     Hybrid Journal   (Followers: 2)
Limnology and Oceanography: Bulletin     Hybrid Journal   (Followers: 2)
Journal of Ocean University of China (English Edition)     Hybrid Journal   (Followers: 1)
Scientia Marina     Open Access   (Followers: 1)
Western Indian Ocean Journal of Marine Science     Open Access   (Followers: 1)
Journal of Ocean Engineering and Science     Open Access   (Followers: 1)
Ocean Life     Open Access   (Followers: 1)
Acta Aquatica : Aquatic Sciences Journal     Open Access   (Followers: 1)
Journal of Ocean Engineering and Technology     Open Access   (Followers: 1)
Tropical Oceanography     Open Access   (Followers: 1)
Marine Systems & Ocean Technology     Hybrid Journal   (Followers: 1)
Marine Life Science & Technology     Hybrid Journal   (Followers: 1)
Asian Journal of Fisheries and Aquatic Research     Open Access  
Thalassas : An International Journal of Marine Sciences     Hybrid Journal  
Oceans     Open Access  
Journal of Agricultural and Marine Sciences     Open Access  
Turkish Journal of Maritime and Marine Sciences     Open Access  
Scientific Drilling     Open Access  
Oceanologia     Open Access  
Revista de Gestão Costeira Integrada     Open Access  
Revista Ciencias Marinas y Costeras     Open Access  
Egyptian Journal of Aquatic Research     Open Access  
China Ocean Engineering     Hybrid Journal  
Revista de Biología Marina y Oceanografía     Open Access  
Latin American Journal of Aquatic Research     Open Access  
Acta Oceanologica Sinica     Hybrid Journal  
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Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2089-7790 - ISSN (Online) 2502-6194
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    • Authors: . .
      Abstract: https://jurnal.usk.ac.id/depik/about/submissions#authorGuidelines
      PubDate: 2023-04-30
      DOI: 10.13170/depik.12.1.31960
      Issue No: Vol. 12, No. 1 (2023)
       
  • Feasibility of using fish visceral trash in a polyculture system for
           enhancing the growth performances of giant gourami (Osphronemus gouramy)
           and redclaw crayfish (Cherax quadricarinatus)

    • Authors: Agus Putra AS, Afrah Junita, Muhammad Jamil
      Pages: 1 - 5
      Abstract: Giant gourami and redclaw crayfish are among popular freshwater organisms with significant potential for aquaculture due to their ease of cultivation, resistance to diseases, and high economic value. Therefore, this study aimed to evaluate the feasibility of using fish visceral trash (FVT) in artificial diets to enhance the growth performances of giant gourami (Osphronemus gouramy) and redclaw crayfish (Cherax quadricarinatus) in a polyculture system. Giant gourami juveniles (3.62±0.86 cm and 3.74±1.15 g) and redclaw crayfish (3.05±0.35 cm and 6.41±0.29 g) were divided into four groups and cultured in 100 L aquarium. Each group was fed twice daily with diets containing 0%, 10%, 20%, and 30% FVT/kg diet. Furthermore, growth performances were assessed in all samples at 14 days intervals over a period of eight weeks. The results showed that diets prepared with 30% FVT significantly affected the growth rate of giant gourami juveniles, while those comprising 20% enhanced the growth of redclaw crayfish. Total length, body weight, specific growth rate, and weight gain significantly increased in samples fed with the experimental compounded diets. Based on the observations, it is suggested that using FVT compounded diets tends to improve growth performances in a polyculture system.Keywords:Giant gouramiGrowth performanceRedclaw crayfishPolycultureTrash fish

      PubDate: 2023-04-18
      DOI: 10.13170/depik.12.1.28381
      Issue No: Vol. 12, No. 1 (2023)
       
  • Additional of EM4 and molasses in feeds on the growth and survival rate of
           snakehead (Channa striata)

    • Authors: Cut Dara Dewi, Usman Maulana, Sayyid Afdhal El Rahimi, Ismarica Ismarica
      Pages: 6 - 11
      Abstract: This study aims to determine the effect of giving EM4 probiotics on the growth and survival rate of snakehead (Channa striata). This research was carried out at the Fish Hatchery Laboratory, Faculty of Marine and Fisheries, Universitas Syiah Kuala. This study was conducted using a Complete Randomized Design (CRD) method with 4 treatments used, namely A (control), B (EM4 6 ml/kg of feed), C (EM4 8 ml/kg of feed), and D (EM4 10 ml/kg of feed). The results showed that the addition of 10 ml/kg of feed of EM4 probiotic resulted in an absolute length growth of 1.60±0.17 cm, an absolute weight growth of 1.85±0.18 gram, a specific growth rate of 1.97±0.10 % per day, a feed conversion ratio of 1.56±0.03, feed efficiency 64.19±1.41 % and survival rate 97.78±3.85 %. The results of this study can be concluded that the addition of probiotic EM4 10 ml/kg of feed can increase the growth and survival rate of snakehead (Channa striata).Keywords:Channa striataEM4Commercial feedGrowthSurvival rate
      PubDate: 2023-04-18
      DOI: 10.13170/depik.12.1.27330
      Issue No: Vol. 12, No. 1 (2023)
       
  • Diversity and distribution of fish in the Lokop river, Leuser Ecosystem
           Area, Indonesia

    • Authors: Furqan Maghfiriadi, Firdus Firdus, M. Ali Sarong, Ilham Zulfahmi, Agung Setia Batubara
      Pages: 12 - 18
      Abstract: Lokop is one of the villages in Serbajadi District, East Aceh Regency, Aceh Province. The village has a watershed named the river Lokop. This river is located in the Leuser Ecosystem Area which is inhabited by various aquatic biota, especially fish, with the level of diversity and distribution patterns that need to be studied and analyzed conoftened. This study used the purposive sampling method, with the parameters being the level of diversity and distribution patterns of fish in the Lokop river. Data collection was carried out at 5 observation stations based on the typology of river habitat, each station was divided into three substations representing parts of the basin, river bank and river basin approximately 50 m apart. Fish sampling is carried out at each station using a plot of 10 x 10 m2. The number of plots at each station is 9 plots with a total of 45 plots. The results showed that the diversity index (H') value of fish in the Lokop river was 2.39 in the moderate category and the distribution pattern of fish in the Lokop river has a uniform pattern and clusters. Out of a total of 17 species obtained, 8 species (47%) were clustred, 8 species (47%) were uniformly distributed and 1 species (6%) could not be analyzed because only one individual was found.Keywords:FishRiverDiversityDistribution
      PubDate: 2023-04-19
      DOI: 10.13170/depik.12.1.30181
      Issue No: Vol. 12, No. 1 (2023)
       
  • Effect of water acidity on the growth performance, survival, and
           hematology condition of the barramundi fish Lates calcarifer (Bloch, 1790)
           fingerling

    • Authors: Mustika Marzah Fitriana, Nur Fadli, Zainal Abidin Muchlisin
      Pages: 19 - 25
      Abstract: Global warming is caused by increased carbon emissions into the atmosphere resulting from burning oil, gas, and other fossil fuels. Subsequently, the carbon gas enters the waters through a diffusion process facilitated by the concentration of gases in the air, which is higher than in the waters. The outcome of this process is a decrease in water acidity, leading to a lower pH, which can disrupt the life of aquatic biotas. Therefore, this study aims to analyze the effect of decreasing of pH on the growth, survival, and physiological conditions of barramundi (Lates calcarifer). To achieve this objective, seven pH levels were tested, namely pH of 7.24 (control), pH 6.74, pH 6.24, pH 5.74, pH 5.24, pH 4.74, and pH 4.24. Every treatment was performed with four replications, and the fish was reared for 30 days in the respective tested pH. The reared madia is sea water with a salinity of 22 ppt. The experiment was conducted in the laboratory of fish breeding Faculty of Marine and Fisheries, Universitas Syiah. The results showed that a decreasing in pH had a significant effect on the growth performance and hematological condition of barramundi (P<0.05), but its had no significant effect on survival (P>0.05). The experimental fish could survive at pH 4.24, but their growth and hematological conditions were disrupted below 6.24. Therefore, it was concluded that the lower threshold value of pH for barramundi was 6.24.Keywords:Global warmingOcean aciditypHFisheries productionPhysiological disturbance
      PubDate: 2023-04-19
      DOI: 10.13170/depik.12.1.31246
      Issue No: Vol. 12, No. 1 (2023)
       
  • Molecular identification of sharks and rays species from Aceh waters,
           Indonesia

    • Authors: Mutia Ramadhaniaty, Maria Ulfah, Indra Indra, Nur Fadli, Nanda Muhammad Razi
      Pages: 26 - 34
      Abstract: Shark is a cartilaginous fish that is widely hunted because it has high economic value. The waters of Aceh are directly adjacent to the Indian Ocean and the Malacca Strait making it a preferred habitat for pelagic fish, especially sharks. Information on shark species landed in the waters west and east of Aceh is very limited due to difficulties in identification and commonly used local names. This study aimed to determine the types of sharks landed in Banda Aceh, Meulaboh, Langsa, Southwest Aceh and Simeulu and to find out specifically what species of sharks are most often landed in Aceh waters. Primary data gathering consisted of four stages, namely sample collection, identification using identification books, molecular identification cytochrome oxidase subunit I (COI) and phylogenetic analysis. The results of the molecular analysis of 46 tissue samples from five locations identified 13 species of sharks, namely Carcharhinhus sorrah, Carcharhinhus amboinensis, Triaenodon obesus, Isurus oxyrinchus, Sphyrna zygaena, Sphyrna lewini, Loxodon macrorhinus, Hemipristis elongaria, Stagostoma fasciatum, Nebrius ferrugineus, Chilloscyllium punctatum, Isurus oxyrinchus, Alopias pelagicus, Alopias supercillosus and 1 species of rays, namely Rhynchobatus australiae. Phylogenetic tree reconstruction using the Neighbor Joining method of 610 basepairs consisting of two large clades separates the species Alopias pelagicus and Isurus oxyrichus with Carcharhinus sorrah, Sphyrna lewini, Loxodon macrorhinus and Rhyncobatus australiae with boostrap values of 87% and 64%. The haplotype diversity shown ranged from 0.667-0.889 while the nucleotide diversity ranged from 0.001-0.097. These values indicates high diversity because of the variance in the number of species found.Keywords:BarcodeCOISharks catchAlopias supercillosusSphyrna lewini
      PubDate: 2023-04-20
      DOI: 10.13170/depik.12.1.29136
      Issue No: Vol. 12, No. 1 (2023)
       
  • Impact of ocean noise on mammalian life (case study: Samarinda waters)

    • Authors: Sri Ratih Deswati, Muhammad Syahrir, Mujiyanto Mujiyanto
      Pages: 35 - 39
      Abstract: Noise pollution, or unwanted sounds in the ocean, can have a negative impact on marine mammals, especially on their biological behaviour when hunting for prey and changes in diving habits when leaving their habitat. This noise study was carried out in the waters of Samarinda with the help of a passive system acoustic instrument, which captures the range of sound intensity in the water column and supporting data in the form of sound range and activity above sea level. The sound range of 38.10-78.60 dB (A) above the water surface is safe for both everyday activities and as a habitat for mammals. Similarly, the underwater sound intensity between 0.84 and 138.47 dB re 1 Pa falls within this range.  The noise condition in the study area is still expected. It can be used as an initial reference for the tolerance of sound intensity that applies to living things around the research location. The noise of the sea in Samarinda's waters has no effect on the lives of animals.Keywords:NoiseSound intensityMarine mammalHydrophoneSmartNoise
      PubDate: 2023-04-20
      DOI: 10.13170/depik.12.1.24855
      Issue No: Vol. 12, No. 1 (2023)
       
  • Biological aspects of squid (Loligo edulis) in the waters of Eastern North
           Sumatra, Indonesia

    • Authors: Dadan Zulkifli, Ratna Suharti, Yuni Fast Track Anjeli Sihombing, Meuthia Aula Jabbar, Siti Mira Rahayu, Aditya Bramana, Hendra Irawan, Deni Aulia
      Pages: 40 - 48
      Abstract: Squid is one of the non-fish resources that have economic value and is a target species in demersal fisheries activities with squid fishing gear and stick-held deep net. This research aims to determine the biological aspects of squid (Loligo edulis) such as length frequency distribution, length-weight relationship, sex ratio, gonadal maturity level, gonadal maturity index, size at first caught, and size at first maturity of the gonads. The method used in this research was a descriptive survey. The sample collection method used systematic random sampling and purposive sampling techniques. This observation was carried out on March 7 to July 30, 2022, at the Belawan Ocean Fishing Port and Tanjung Balai Port. The results showed that the average length distribution of squid was 17.73 cm. The relationship between the length and weight of squid is negative allometric. The sex ratio is 1:1.05. The negative allometric growth pattern is dominated by Gonadal Maturity Level (GML) I and GML II. The highest GML value for male squid was 2.06% at GML III, and the highest GML value for female squid was 1.92% at GML III. The average size of the caught squid length (Lc) is 10.42 cm. The size of the first gonad maturity (Lc) was 13.32 cm.Keywords:SquidBiological aspectsFisheries aspectManagement effort
      PubDate: 2023-04-20
      DOI: 10.13170/depik.12.1.28602
      Issue No: Vol. 12, No. 1 (2023)
       
  • The correlation between environmental parameters and the abundance of
           crabs in the mangrove ecosystem of Gemuruh River, Koto XI Tarusan
           District, West Sumatera

    • Authors: Dwieke Putri Wulandari, Eni Kamal, Suparno Suparno
      Pages: 49 - 55
      Abstract: Crabs are a member of the mangrove ecosystem fauna and get their food source from litter. They turn the litter into detritus and maintain ecological balance. In addition, environmental conditions in the mangrove ecosystem also play an essential role in the abundance of brachyuran crabs. Influential environmental factors include temperature, salinity, water pH, and substrate type. This study aims to determine the effect of environment types on the presence of brachyuran crabs from families Ocypodidae and Sesarmidae in the mangrove ecosystem in Gemuruh River, Koto XI Tarusan District. The method used is a descriptive method, which is a direct observation approach to crabs and environmental conditions in the mangrove ecosystem area. Collection of crab samples and environmental condition data used a purposive sampling technique. The result shows six species distributed in the area, namely Uca bellator, U. rosea, Perisesarma eumolpe, Sarmatium germaini, P. plicatum, and Sesarma curoense. The distribution of species crabs in vegetation mangroves is Rhizophora stylosa, R. apiculata, R. mucronata, Sonneratia alba, and Nypa fruticans. The environmental parameters (temperature, salinity, water pH) at each station were within the relatively good category for the growth of the Ocypodidae and Sesarmidae crab families. Based on the analysis results of the relationship between the abundance of brachyuran crabs and environmental parameters (temperature, salinity, water pH), it can be seen that there is no significant correlation between temperature, salinity, and water pH with the abundance of Ocypodidae and Sesarmidae brachyuran crabs families in the mangrove ecosystem of Gemuruh River. The factor with a dominant influence on the abundance of these crabs is the substrate type.Keywords:AbundanceKoto XI TarusanMangroveOcypodidaeSesarmidae
      PubDate: 2023-04-21
      DOI: 10.13170/depik.12.1.27000
      Issue No: Vol. 12, No. 1 (2023)
       
  • Marine debris in tourism area of Dodola Island Beach, Morotai Island
           District

    • Authors: Sukarmin Idrus, Marwis Aswan, Sudin Sumahi
      Pages: 56 - 61
      Abstract: Coastal and marine areas are very vulnerable to various pollution threats from human domestic activities (marine debris), industry (fishery management) and other activities. One of the the problems faced in the management of Dodola island tourism was marine debris. This study aims to determine the composition of marine debris generated from tourism activities. Futhermore this study was necessary as basic information to formulate appropriate strategies in managing marine debris. This research was conducted from August to September 2021. Observations were made by visual observation at porposive area. Analysis of the type and weight taken from the observed waste such as the number of pieces, weight, composition and density of solid waste and separated according to the type of organic and inorganic. This result showed inorganic waste such as plastic bottles and cups, plastic packages, Styrofoam, sandals/shoes, glass bottles, diapers, cardboard and aluminum cans with a total of 664 items or 58% pieces, while for organic waste consisting of wood, bamboo, coconut and nipa fruit and banana leaves, with the number of pieces as much as 473 items or 42%. Organic waste has a weight of 203,422 grams or 85% and organic marine waste is 35,915 grams or 15%. The types of organic waste with the highest and heaviest amounts were bamboo 70.51% and 73.77%. Meanwhile, the type of inorganic waste with the highest amount was plastic bottles/cups 79.17% and the heaviest type of waste was glass bottles 55.08%.Keywords:Marine debrisGPSOrganicInorganic
      PubDate: 2023-04-21
      DOI: 10.13170/depik.12.1.25090
      Issue No: Vol. 12, No. 1 (2023)
       
  • Identification of species, intensity, and prevalence of Vannamei shrimp
           

    • Authors: Juliana Juliana, Yuniarti Koniyo, Ike Nursyafitri Dangkua, Indika Abd. Rahman
      Pages: 62 - 67
      Abstract: Vannamei shrimp (Litopenaeus vannamei) production continues to decline due to parasitic attacks on ponds in North Gorontalo Regency. Ectoparasites are one of the factors that can cause failure in the cultivation of vannamei shrimp. This study aims to determine the type of ectoparasites, intensity, and prevalence of vannamei shrimp cultured in traditional ponds in the North Gorontalo Regency. The sampling of the research was carried out at five research stations. The sampling of this research was taken at random in 5 plots of ponds and the total number of shrimps as many as 150 tails. At each station, samples were taken of 30 vannamei shrimp. Sampling using fishing gear in the form of nets. The observed samples were 8-10 cm in size alive. Observations of ectoparasites were carried out microscopically using a Zeis Binocular microscope with 10x magnification. Data analysis used descriptive analysis of the types of ectoparasites, intensity, and, the prevalence of ectoparasites found. The results of the study found four types of ectoparasites found in vannamei shrimp, namely Zoothanium sp., Epistylis sp., Carchesium sp., and Vorticella sp. The intensity of ectoparasite attack on shrimp was categorized as low to moderate infection, namely 4-7 individuals/shrimp. The prevalence rate is 80-100% with the category of moderate to very severe infection.Keywords:EctoparasitesPrevalenceIntensityVannamei shrimp
      PubDate: 2023-04-21
      DOI: 10.13170/depik.12.1.27071
      Issue No: Vol. 12, No. 1 (2023)
       
  • Analysis of changes in mangrove land cover on the north coast of Aceh
           Besar

    • Authors: Kamisnuddin Kamisnuddin, Muhammad Rusdi, Muhammad Irham, Faisal Abdullah
      Pages: 68 - 75
      Abstract: The use of Geographic Information Systems (GIS) to generate digital data that provides information on the characteristics of an area and describes changes in land cover that can be used in a more effective and efficient sustainable manner. This study aims to analyze the mangrove land cover of the north coast of Aceh Besar over the last three decades, namely 2000, 2010, and 2020 in the Baitussalam sub-district, Mesjid Raya sub-district and Seulimeum sub-district. The research was conducted from June 2022 to September 2022 at the GIS Laboratory, Faculty of Marine and Fisheries, Syiah Kuala University. The research was conducted using a Geographic Information System (GIS) that utilizes high-resolution satellite imagery from Google Earth Pro. Mangrove land was digitized visually on screen, then data processing was carried out, and spatially analyzed. The results of the analysis of changes in mangrove land cover in the research area show that the Baitussalam and Mesjid Raya sub-districts had a decreasing trend of mangove land between 2000 and 2010 and subsequently there was an increase in mangrove land cover from 2010 to 2020. Meanwhile, Seulimeum sub-district experienced a decreasing trend of land cover in 2000 until 2020. The decline in the trend of mangroves in various places is caused by the growth of the population using mangrove land as residential area. While the increase in mangove land cover was due to the success of reforestation and pond land conversion. The results conclude that the mangrove land cover on the north coast of Aceh Besar is relatively stable with an increasing trend of growth.Keywords:Land coverMangroveHigh resolution googleHistorical imageryGoogle earth proDigitize
      PubDate: 2023-04-21
      DOI: 10.13170/depik.12.1.30243
      Issue No: Vol. 12, No. 1 (2023)
       
  • Literature study: the community perception of rowing venue development in
           women's forest ecosystem, Youtefa Bay, Jayapura City, Papua

    • Authors: Vience Tebay, Ilham Ilham
      Pages: 76 - 86
      Abstract: Women's forest in the local language called “Tonotwiyat” is a private space for women. Women's forests are not only limited to controlling disasters and neutralizing air pollution but are like mothers who provide life for local communities. This article is a literature study by conducting text and discourse analysis on socio-cultural events whose subjects are library materials. The results of this study indicate that the construction of the rowing venue has contributed to the damage to the women's forest ecosystem in Jayapura City. The tradition of protecting women's forests as a source of local food and as a place for character education for women is now starting to be eroded as a result of environmental pollution and land conversion. Rehabilitation is carried out as an effort by the government to preserve the damage to the mangrove ecosystem that has been affected by development. As a recommendation In addition to carrying out rehabilitation and revegetation, in the future it is necessary to expand by planting mangrove seedlings by colonizing new areas or extensification. Including the importance of regulations governing the protection and management of women's forests based on local wisdom adopted by the local community.Keywords:Women's forestMangrovesDevelopmentRowing venue
      PubDate: 2023-04-21
      DOI: 10.13170/depik.12.1.21298
      Issue No: Vol. 12, No. 1 (2023)
       
  • Evaluation feasibility and ecological gap in marine conservation area of
           Southeast Sulawesi Province

    • Authors: Zulhamsyah Imran, Cahyo Wijayanto, Fredinan Yulianda
      Pages: 87 - 98
      Abstract: Aquatic Tourism Park (ATP) of the Southeast Sulawesi Province has significant contribution to achieve the total targeted of 30 million of Marine Protected Areas (MPA) in Indonesia. The conservation area is located in 3 coastal districts of Konawe, South Konawe, and Kendari City Districts. The time-consuming process of legalizing the conservation area has driven the need to re-evaluate the ecological conditions from 2012 to 2020. The objective of this study is to this aims to determine the status, gaps and ecological feasibility of conservation areas in the Southeast Sulawesi region. One of the noticeable gaps is the change of ecological conditions in the reservation area.  The gap could be identified by comparing ecological conditions before and after the area was reserved for a conservation area. Ecosystem suitability was measured by using ecological criteria, such as number of protected fish species, mangrove density, seagrass coverage, coral coverage, and naturalness. The score of suitability assessment was 31, which showed that the reserved location was suitable for a Marine Conservation Area.  However, gap analysis results showed 10% decline in coral coverage and 17% decrease in seagrass coverage, while mangrove density decreased as much as 102 trees/ha during that period. Evaluation on the ecosystem condition was conducted by applying suitability analysis of the modified E-KKP3K dan Sambah et al. (2020) methods, resulting a status of suitable or conservation area allocation (score 31). Criteria used were chosen based on its contribution in facilitating important ecological processes and as ecosystem buffer system in the area. This study will give the implementation on MPA management optimalisation and it can be contributed on fisheries management.Keywords:Conservation areaFeasibility areaGapSoutheast Sulawesi
      PubDate: 2023-04-28
      DOI: 10.13170/depik.12.1.31637
      Issue No: Vol. 12, No. 1 (2023)
       
  • Valuation of fisheries management status based on ecosystem approach (EA)
           in East Simeulue, Aceh

    • Authors: Ratna Mutia Aprilla, Celli Dirgantini, Edy Miswar, Thaib Rizwan, Djamani Rianjuanda, Salmarika Salmarika, Alvi Rahmah, Imelda Agustina, Ratu Sari Mardiah
      Pages: 99 - 104
      Abstract: Fishery management is an activity that must be carried out to achieve sustainable fisheries. Fisheries management using the Ecosystem Approach to Fisheries Management (EAFM) approach is the sustainable use of fishery resources and protection of fish stocks in nature. One of the objectives of fisheries management in social and economic aspects is how fisheries can ensure the socio-economic welfare of the fishing community. Using fishing gear that is not environmentally friendly is one of the triggers for social conflict between fishermen and the uncertain selling price when the peak season of fish impacted the fishermen's economy. Therefore, the purpose of this research is to examine the socio-economic domain indicators from the aspect of EAFM-based coastal and marine resource ecosystem management. This research was conducted from January to February 2021, located in Simeulue District, Sub-District East Simeulue. The data collection method used in the study was interviews and field surveys. The determination of respondents is done by using a gradual sampling technique or stratified random sampling. Data analysis uses an ordinal-based Likert score of 1,2,3 for each indicator, namely the economic domain, fishery household income (RTP), savings ratio, asset ownership, and the social domain, namely stakeholder participation fisheries conflict and the use of local knowledge in fish resource management. Management status in East Simeulue District assessed the aggregate value of the economic domain in the medium category with a score of 48.3. Fishermen still earn less than the minimum wage, while in the social domain, it is in the excellent category with a score of 100 because fishermen, institutions, and related agencies work with each other. Keywords:EAFMEcosystem approachFishery management
      PubDate: 2023-04-30
      DOI: 10.13170/depik.12.1.22064
      Issue No: Vol. 12, No. 1 (2023)
       
  • The abundance of Microcystis sp. on intensive shrimp ponds

    • Authors: Hayati Soeprapto, Heri Ariadi, Ubad Badrudin, Petrus H.T Soedibya
      Pages: 105 - 110
      Abstract: Microcytis sp is plankton species that is detrimental in shrimp pond ecosystems. The purpose of this study was to detect the abundance of plankton and the presence of Microcystis sp. in the waters of vaname shrimp (L. vannamei) aquaculture ponds. The research method used is descriptive quantitative and qualitative with added analysis of dynamic modeling systems. The results showed that pond water quality conditions were still good enough for shrimp farming activities with details of dissolved oxygen 4.01-6.17 mg/L, pH 7.7-7.9, salinity 20‰, temperature 27.050-28.250C, nitrate 0.01-0.15 mg/L, phosphate 0.05-0.20 mg/L, brightness 25-35 cm. For the classification of plankton found among them are from the Bacillariophyceae class, there are the genera Skeletonema sp., Cyclotella sp., Coscinodiscus sp., and Amphipora sp., from the Chlorophyceae class, there are the genera Chlorella sp., Oocystis sp., and Clamydomonas sp., from the Cyanophyceae class. the genus Oscillatoria sp., Microcystis sp., and Anabaenopsis sp. The plankton diversity index (H') was obtained between 0.01-0.33 and the uniformity index (E) was obtained between 0.10-0.50, meaning that the condition of the pond waters is still quite good and there are minimal indications of pollution. The abundance of Microcystis sp. obtained between 0.2x104-0.6x104 cell/ml. from the results of dynamic modeling analysis it is shown that the abundance of Microcystis sp. in pond waters is influenced by the value of the productivity level of the waters and the process of grazing organisms. The results of this study can be concluded that the plankton abundance rate found in ponds ranges from 0.4x104-1.9x104 cell/ml which consists of 10 genera and 3 classes of plankton. Then Microcystis sp. its presence was found in 3 ponds with abundance rate ranging from 0.2x104-0.6x104 cell/ml.Keywords:CultivationGenusGrazingModelWaters
      PubDate: 2023-04-30
      DOI: 10.13170/depik.12.1.30433
      Issue No: Vol. 12, No. 1 (2023)
       
 
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Advances in Oceanography and Limnology     Open Access   (Followers: 16)
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Ocean Yearbook Online     Hybrid Journal   (Followers: 4)
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China Ocean Engineering     Hybrid Journal  
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