DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
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Reducing ammonia levels in catfish cultivation water using several aquatic plants
Get PDFCatfish farming is one of the businesses that is very much in demand by the community, because it can improve the community's economy. However, not all catfish farming businesses can produce maximum results. This can be caused by several factors, both from feed, management and water quality. Decrease in water quality can be caused by feces and fish feed residue. Poor water quality can cause the growth process, physiology and level of fish behavior to be disturbed. Efforts that can be done is to use aquatic plants as phytoremediation. The plants used in this study were Azolla sp, Eichhornia crassipes, Lemna sp, Ipomoea aquatic. The design used in this study was a completely randomized design with 4 treatments and 3 replications. The parameters observed in this study were ammonia levels, pH, and plant population. The results showed that Eichhornia crassipes and Lemna sp were able to reduce ammonia levels in catfish cultured water by 0.01 mg/l at the end of the study.Keywords:AmmoniaWater plantsCatfis
Intensive Litopenaeus vanamei pond performance with irrigation system based on Distribution of Vibrio spp.
Get PDFIntensive shrimp ponds are characterized by the high stocking density of shrimp and artificial feeding and are equipped with an irrigation network system. The purpose of this study was to analyze the intensive L.vannamei pond with an irrigation system based on Vibrio spp. distribution to determine environmental quality degradation in terms of the treat of pathogenic bacteria. This study was carried out for one production cycle from March toJuly 2021 in an intensive shrimp farm in Sarjo Village, Pasangkayu Regency, West Sulawesi. The parameters analyzed in this study consisted of Total Bacterial Count (TBC), Total Vibrio Count (TVC), yellow and green colony Vibrio spp. in water using the spread plate method. Water samples for bacterial analysis were taken from 1) source water: (a) surface (050 cm depth) and (b) pump mouth; 2) treatment pond; 3) aquaculture pond; 4) Waste Water Treatment Ponds (WWTP); 5) outlet (before discharge into public waters). The results showed that the distribution of bacteria from seawater to WWTPs pond still increased the abundance of Vibrio spp., although the abundance of Vibrio spp. is still safe or below the maximum limit of 104 CFU/mL. Distribution of Vibrio bacteria in Intensive L.vannamei Pond Sarjo Village, West Sulawesi gave a relatively good pond performance because it was characterized by an abundance of Vibrio bacteria in the pond irrigation system from inlet to outlet which was still below the maximum limit and high pond productivity.Keywords:Intensive shrimp pondPathogenicVibrio spp.Pond performanceAquacultur
Study of Organic Carbon (OC), and Calcium Carbonate (CaCO3) in the coastal area of Aceh Besar
Get PDFMost of the coastal areas of Aceh Besar are areas of accumulation of organic compounds, one of which is Organic Carbon (OC). The purpose of this study was to analyze the chemical content by looking vertically at the content of OC, soil pH and Calcium Carbonate (CaCO3) on the coast of Aceh Besar District. Analysis of the OC content using the Walkley and Black method, while to analyze the Calcium Carbonate (CaCO3) using the Titrimetric method. Especially for the analysis of soil pH, only use a pH meter. The results showed that each station had different levels of OC and carbonate. Generally, the presence of OC decreases with depth, while the carbonate content varies. Especially for soil pH, the pH is relative to the alkaline state for each depth. The range of OC content for all stations is 0.18 2.48%, Carbonate 5.36 13.27% and pH 6.37-8.73.Keywords:CoastalOrganic CarbonCarbonateSoil p
Macrobenthos as an indicator of water quality assessment in Kutaraja Fishing Port, Indonesia
Get PDFWater quality is influenced by the high activity in the port area, resulting in decreasing water quality. The biological parameters based on the structure of the aquatic community of organisms that act as bioindicators could be indicated as changes in water quality around the port. Bioindicators are a group of living organisms susceptible to environmental changes due to human activities and natural damage. One of the aquatic organisms that can be used as an indicator of water quality is Benthos because of its sedentary nature. This study aims to determine the quality of the water environment seen from the benthic community structure, namely density, diversity index, uniformity and dominance index, to embody the clean and pollution-free Kutaraja Fishing Port. The research shows that the aquatic environment of Kutaraja Fishing Port is included as the less stable category with a moderate diversity value (H' 1) but has high benthic individual uniformity (E 0.6), which means that individuals are evenly distributed a low dominance value or C is close to 0.Keywords:Water qualityBio-indicatorBenthosKutarajaBanda Ace
The Distribution of heavy metals in Jakarta and Semarang bay during the period of 2016 - 2019
Get PDFCoastal areas have an important role and have high natural resources that can be utilized for human life. Over time, the increase in population is directly proportional to the activities and utilization of coastal areas, which puts great pressure on coastal areas. One of the pressures that occur in coastal areas is heavy pollution. This research aims to see the distribution of heavy metals especially Cd, Cu and Pb in the coastal areas of Jakarta Bay and Semarang Bay and to see the differences in heavy metal content from the two gulfs. The data used in this study is secondary data, which consists of data on heavy metals, current velocity, pH and water temperature. The period of data used in this research are from 2016 to 2019, The method used in this study is the GIS method with descriptive analysis. The comparison of concentrations from two bays shows a higher mean of concentration value of heavy metals cadmium (Cd) in Semarang Bay (2016, 2017, 2019) and heavy metals of copper (Cu) in Jakarta Bay (2016 and 2018). Meanwhile, the concentration value of heavy metal lead (Pb) was higher in Jakarta Bay (2016, 2017, 2018), yet in 2019, the two locations have the same concentration value of heavy metal lead (Pb).Keywords:Coastal areaDistributionHeavy metalsJakarta BaySemarang Ba
The influences of the Indian Ocean Dipole (IOD) on rainfall in South Aceh
Get PDFThis study aimed to examine the influences of the Indian Ocean Dipole (IOD) on rainfall in three districts in South Aceh. The analysis was undertaken using Dipole Mode Index (DMI) data and five years of rainfall (2016 to 2020) in West Labuhan Haji, Tapak Tuan, and Bakongan areas. This research employed a correlation analysis and the Principal Component Analysis, followed by Cluster Analysis to investigate the relationship between IOD and rainfall at the study location. The negative IOD occurred in 2016, and the positive IOD occurred in 2017, 2018, 2019, and 2020. The strongest positive DMI was in October 2019 (1.123C), while the strongest negative DMI was in July 2016 (0.661C). Generally, the sub-districts of West Labuhan Haji, Tapak Tuan, and Bakongan always have high rainfall. The highest rainfall in West Labuhan Haji was recorded in January 2017 (1014 mm/month), in Tapak Tuan in November 2017 (1073 mm/month), and in Bakongan in July 2020 (605 mm/month). The correlation between DMI and rainfall in the three locations shows different findings. Although it was very small, the IOD affected the rainfall in West Labuhan Haji, Tapak Tuan, and Bakongan. In West Labuhan Haji, the highest correlation was in lag 1 (0.188); in Tapak Tuan, the highest correlation was in lag 2 (0.156), while in Bakongan, the highest correlation was in lag 2 (-0.191). The correlations in these three locations are considered weak. Thus, the IOD is not the main factor affecting the rainfall in West Labuhan Haji, Tapak Tuan, and Bakongan. As South Aceh is located in windward, the orographic effect may influence high rainfall in this region.Keywords:DMIRainfallPrincipal component AnalysisWest Labuhan HajiTapak TuanBakonga
Diversity of commercially important grouper (Family: Epinephelidae) in Simeulue and Banyak Islands, Aceh, Indonesia
Get PDFGrouper is one of the economically important fish groups in the Simeulue and Banyak Islands. However, data on the diversity of the grouper in this region is still limited. This study aimed to inventory the commercially important grouper in Simeulue and Banyak Islands. Sampling was carried out in April - September 2021 at sixteen locations around Simeulue and Banyak Islands. In total, 20 species of commercial grouper consisting of 6 genera were recorded during the study. Epinephelus was the most dominant genus with ten species, followed by Cephalopholis with four species. In addition, seventeen species (85%) were included in the Least Concern (LC), two species (10%) were categorized as Vulnerable (VU), and one species (5%) was Data Deficient (DD). This study provides a database of commercially important grouper in Simeulue and Banyak Islands that can be used to manage the fish group
Description scleractinian coral from Miang Island, East Kalimantan
Get PDFThe exact number of coral species in Indonesia is not unclear yet, in 2002 the coral taxonomist, JEN Veron, stated 590 species, and it was supported by an Indonesian coral taxonomist, Suharsono, eight years later. The current coral species data is 605 but it is from Coral Triangle Region area (CT). The eastern of Indonesia, which is located in the Coral Triangle Region, has received a lot of attention from coral researchers, due to coral species that have been described. On the other hand, the coral reef from the western part of Indonesia, including in the East Kalimantan, has not been explored much in recent times. Through the ecoregion view, E. Kalimantan region is clustered into ecoregion 43 (Sulu Sea) which has 540 coral species. Miang Island is one of the inhabited islands from E. Kalimantan, and has an unexplored coral reef ecosystem. The method had been used in this research is descriptive, which uses photos of live corals to describe colony characteristics corals. The results of the study have described 36 species of coral and several invertebrates that make up coral reefs on Miang Island.Keywords:Hard coralAcroporaPoritesIdentificationPulau Mian
The effect of aquous extract of johar leaves (Senna siamea) injection on survival rate and blood profile of snakehead fish (Channa striata)
Get PDFAqueous extract of johar leaf contains metabolite compounds such as flavonoids, sponins, tannins, phenols, anthraquinones, anthocyanins, and cardiac glycosides which can be used to substitute commercial antibiotics. The use of aqueous extract of johar leaf has been known to have antibacterial activity in vitro. This study aims to determine the effect of aqueous extract of johar leaves (Senna siamea) injection on survival and blood profile of snakehead fish (Channa striata) in vivo. This research was a laboratory study using a completely randomized design (CRD) with 5 treatments and 3 replications with a total sample of 75 snakehead fish. The fishin KA, KB, KC and KD groups were injected with aqueous extract of johar leaves with concentrations of 10%, 20%, 40%, and 60% respectively, while in KE group the fish was injected with distilled water (control). The parameters of this study were the survival rate and blood profile of snakehead fish. Blood hematology examination included calculation of erythrocyte count, hemoglobin level, and hematocrit percentage, leukocyte count, and thrombocyte count. The research data obtained were analyzed using one-way analysis of variance and followed by Duncan's Multiple Distance test. Injection of aqueous extract of johar leaf did not affect the survival rate of snakehead fish. However, hemoglobin and platelet levels significant decrease in the group given 60% concentration of aqueous extract of johar leaf. It can be concluded that aqueous extract of johar leaf at a concentration of 10%, 20%, 40% is safe to use in snakehead fish.Keywords:Johar leaves extractSnakehead fishBlood profileSurvival rat