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ANALYSIS OF PHOTOCHEMICAL PROFILE AND ENDOSYMBION BIOMASS OF CORAL Symbiodinium sp
Get PDFCoral reefs are important ecosystems with the highest species diversity on earth. Besides its high ecological and economic value, it turns out that coral reefs are facing global climate change. One of the environmental factors affected by the effects of global climate change is the penetration of sunlight that reaches the earth's surface. Symbiodinium as a coral endosymbiont turns out to have an adaptation pattern that is correlated with environmental conditions, especially light. The research focused on the interaction between solar radiation and Symbiodinium and its biochemical profiles, which have an important meaning for coral reef ecology and its recovery when affected by excessive light. In addition, it opens up opportunities for the use of light as a triggering factor for the production of certain biochemical compounds in cells. The micro-habitat conditions in the laboratory are made in such a way that it can provide penetration of light intensity that is at the optimal or extreme threshold for Symbiodinium. The measured light intensity is expected to trigger the process of cellular adaptation and the production of certain biochemical compounds in cells. The results are expected to show that light has a significant effect on changes in the content of biochemical compounds in Symbiodinium biomass. The increase in light intensity is expected to guide cells to increase the concentration of lipids and intracellular fibers
ANALYSIS OF RIVER WATER POLLUTION DUE TO DISPOSAL OF NATURAL STONE INDUSTRIAL WASTE IN CIREBON REGENCY
Get PDFThe development of the industrial sector has caused many changes in environmental quality, including the natural stone industry in Cirebon Regency. Water pollution that occurs is mostly caused by the disposal of waste to the river. Wastewater containing sludge causes changes in water quality including turbidity, high total and suspended solids, and sedimentation. The purpose of this study was to examine the condition of water quality and the status of river pollution due to the disposal of natural stone industrial waste using the STORET method and the pollution index. As a result, the concentration of TSS reached 1,042.33 mg/L and has exceeded the class III quality standard based on Government Regulation Number 22 of 2021. Pollution status based on the STORET method shows stations 1 and 2 are in the moderately polluted category, while station 3 is included in the category of lightly polluted. Meanwhile, based on the pollution index method, each station is included in the lightly polluted category. The results of both the STORET and the pollution index showed that station 2 had the highest score. Thus, efforts to treat waste from natural stone industrial activities are needed to reduce the rate of increase in river pollution
PRELIMINARY STUDY OF FISH DIVERSITY IN PABEAN BAY, INDRAMAYU
Get PDFPabean Bay is an estuary waters in which salinity fluctuations occur. This fluctuation requires that the fish living in this location have the ability to adapt. This research is a preliminary study that aims to identify the diversity of fish species in these waters. The study was conducted from January to June 2015 with sampling at intervals of one month. Fishing was carried out at three stations, namely the inside which is the estuary of the river, the middle part and the outside of the estuary to get a representative sample. The fishing gear used are sero, and trammel nets. During the study, it was found that 78 species of fish were included in 39 families. The number of species in each sampling varies. Among the fish found were mainly the family Gobiidae (10 species) and the Family Leiognathidae, Lutjanidae, Sciaenidae and Tetraodontidae (four species each). Several fish species were found in the larval, juvenile and adult stages, and these conditions illustrate the importance of estuaries in the survival of the fish life cycle
DISTRIBUTION ANALYSIS AND MARKETING MARGINS OF FRESH FISH CATCHES IN TPI SENDANGBIRU, MALANG REGENCY, EAST JAVA
Get PDFBased on data from the Department of Maritime Affairs and Fisheries of Malang Regency, Sumbermanjing sub-district is the largest capture fishery producing sub-district in Malang Regency. The purpose of this study is to find out how efficient the marketing channels are at TPI Sendangbiru. This research was conducted descriptively using a survey method in the field. Data collection was obtained through sampling (primary data) and statistical data collection owned by TPI Sendangbiru. There are 5 marketing channel patterns in TPI Sendangbiru. Each type of fish has a different marketing flow. The value of marketing efficiency for each type of fish in each marketing channel has various values. The efficiency value in marketing tuna and albakor has the same marketing channel and value, namely 2%, for marlin fish 3%. The baby tuna fish have 5 marketing channel patterns of 4%, 5%, 3%, 4%, and 5%. On tuna, lemuru, and kite also have 5 patterns of marketing channels. The value of marketing efficiency of tuna is 6%, 6%, 4%, 5%, and 6%, the value of marketing efficiency of lemuru is 7%, 8%, 5%, 6%, and 8%. The value of the marketing efficiency of scad fish is 6%, 7%, 4%, 6%, and 7%
THE COMPOSITION TEST OF TILAPIA FEED (Oreochromis niloticus) WITH ADDITION OF FLOUR E. cottonii FERMENTED USING TAPE YEAST AND EM-4
Get PDFThis study attempts to analyze the growth of tilapia feed with additional flour E. cottonii fermented with a combination of tape yeast and EM4. This study used a Completely Randomized Design (CRD) with 4 treatment and 3 replications which is P1 (control/0% fermented E. cottoni flour), P2 (4% fermented E. cottoni flour), P3 (8% fermented E. cottoni flour), and P4 (12% fermented E. cottoni flour). Fish maintenance done for 50 days. The observed parameters were absolute growth rate, absolute length growth, specific growth rate, feed efficiency, feed convertion ratio, survival rate and water quality. Data were analyzed using Analysis of Variance (ANOVA) within 95% of trust. The result showed that there is no significant different on the growth, feed efficiency, feed convertion ratio, and survival rate but could potentially be an alternative feed raw materials because it is still capable of producing the same results with control feed
Trophic-Saprobic Index Based on Macrozoobenthos Abundance as Indicator of Pollution Status in The Banjir Kanal Barat River.
Get PDFThe Banjir Kanal Barat River is one of the major rivers in the Semarang City and there are various activites along the river by the citizen which will give an impact to lead to pollution on water quality. Macrozoobenthos can be used as bioindicator because of it’s low of mobility, easy to catch and identify. The purpose of this study was to determine the community structure of macrozoobenthos, the saprobic index value and to determine the pollution status of The Banjir Kanal Barat River.This research was conducted in June-July 2020 using a purposive sampling technique with a total of three stations. The 1st Station is dredged waters in 2019, the 2nd Station is polluted waters due to chicken farm waste, and the 3rd Stations is polluted waters due to domestic waste.The identification of macrozoobenthos use FAO book (1998) and Conchology.be website.The Calculation of community structure of macrozoobenthos consist of diversity, uniformity, and dominance index.The data analysis in this research are data analysis of community structure of macrozoobenthos and saprobic index. The result showed that the Diversity Index (H’) ranged from 0,98 to 1,17 while the Uniformity Index (e) was between 0,56-0,71 and the Dominance Index (C) ranged from 0,43 to 0,45. There were 8 types of macrozoobenthos, consisting of 1 type from the polysaprobic group, 2 types from the β-mesosaprobic group and 5 types from the non-saprobik group. Based on the calculation of the saprobic index value obtained -0,11 and the Tropic Saprobic Index was -1,07. The pollution status of the Banjir Kanal Barat River is indicated moderate to severe pollution
POLLUTION OF PESTICIDE RESIDUES IN RIVERS : REVIEW
No full textPesticides has been widely used in pest eradiction in agriculture sector. The types of pesticides are used to kill grass (herbicides), fungi and bacteria (fungicides), and insects (insecticides). In general, those pesticides are contain toxic compounds, such as dichlorodiphenyl trichlorethane (DDT), dieldrin, and polychlorobiphenyls (PCB) which are lipophilic, persistent, and difficult to degrade. In general, fresh waters such as rivers are more at risk of pollution due to pesticide residues that enter through runoff. The pesticides residues of the nearby rivers can easily affect the water quality, sediment as well as causing toxic effects on non-target organisms through the food chain. The method in this paper refers to several research results that have been carried out, by providing an overview of pesticide residue pollution in rivers. The results showed that pesticide residues mostly contaminated rivers in China, with DDT and hexachloro cyclohexane (HCH) being the most commonly found and studied species. Several rivers in China have concentrations of DDT and HCH beyond the highest concentration levels in both water, sediments and aquatic organisms.Keywords : Pesticide, Pollution, Rive
Ecological Conditions of Enhalus acoroides (Linnaeus f.) Royle, 1839 and The Influencing Factors at Sari Ringgung Beach, Pesawaran District, Lampung
No full textThis research was conducted from May to June 2020, located at Sari Ringgung Beach, Pesawaran District, Lampung Province. This study aims to assess the ecological conditions of Enhalus acoroides seagrass and to analyze the relationship between Enhalus acoroides ecosystem and water quality. Determination of observation points using purposive sampling method. Data on seagrass conditions and measurement of water quality parameters were carried out using a quadratic transect measuring 50 cm x 50 cm. The relationship between seagrass density and coverage with water quality parameters was tested using principal component analysis (PCA). The results showed that the type of seagrass vegetation at Sari Ringgung beach was single with the type of seagrass Enhalus acoroides. The highest average density value of Enhalus acoroides was at station 3 with a range of 76 individuals / m2 and the lowest density was at station 1 with a range of 36 individuals / m2. Meanwhile, the highest average value of Enhalus acoroides cover was at station 3 with a range of 48.48% / m2 and the lowest was at station 1 with 25.0% / m2. Seagrass density and cover have a positive correlation with phosphate, temperature, depth, brightness, and current and negatively correlated with parameters TDS, TSS, salinity, dissolved oxygen (DO), pH and nitrate
Habitat and Distribution of Desmopuntius gemellus (Kottelat, 1998) at Palm Oil Plantation Canal Near Pidada River, Tulang Bawang, Lampung
No full textDesmopuntius gemellus is a native species of peat swamp waters in Southeast Asia. This fish is economically important value for the local community, for example as consumption fish and as bait to catch carnivorous fish. Until now there has been no management effort to protect the sustainability of the fish. Ecobiology studies are needed as initial information in managing this fish. Samples were collected from primary and secondary canal stations at the palm oil plantation in Penawartama District, Tulang Bawang Regency during October 2019 to January 2020. A total of 1,088 fish samples were collected by using lift net, with the most distribution in the secondary canal. Main component analysis shows that secondary canal stations are more characterized by temperature parameters. And the primary canal is characterized by depth, brightness, current, and dissolved oxygen
DIVERSITY AND ABUNDANCE OF MACROZOOBENTHOS IN THE WATERS OF KELAGIAN LUNIK ISLAND PADANG CERMIN DISTRICT PESAWARAN REGENCY
No full textKelagian Lunik Island is located in Pesawaran Regency which has three ecosystems that are mangrove, seagrass, and beaches ecosystems. These three ecosystems affect the survival of one of the biotas living on the substrate of the water that is macrozoobenthos. Macrozoobenthos are invertebrate biota that live on the base of the substrate or inside the substrate. The role that is large enough in the aquatic ecosystem is to describe the organic matter that falls to the water base. It is therefore the research to study the diversity and abundance of macrozoobenthos. This research was conducted in December 2019 to January 2020 located on Kelagian Lunik Island, Padang Cermin District, Pesawaran Regency, Lampung Province. The method is purposive sampling at five stations with three repetitions. The results show that the highest abundance found in the species Tellina perna with 2880 ind/m3 on Station 1, Nassarius globosus with 1851 ind/m3 on station 2, and Marshalora adversa with 1645 ind/m3, 2674 ind/m3, and 1851 ind/m3 at stations 3, 4 and 5. The biodiversity of macrozoobenthos such as the index of diversity and uniformity in the waters of Kelagian Lunik Island is relatively high and the dominant index is relatively low thereby the condition of the water can fit in the good category