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Indonesian Journal of Limnology

inajl
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Published by Masyarakat Limnologi Indonesia

ISSN : - EISSN : 27742571 DOI : https://doi.org/10.51264/inajl.v1i1.3

Core Subject : Science, Social, Engineering,

Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Environmental Science

Indonesian Journal of Limnology (InaJL) is a periodical publication from the Indonesian Society of Limnology (Masyarakat Limnologi Indonesia [MLI]). Published semiannually, the journal has a goal to be a means of communication and dissemination of research results in tropical limnology. The articles in this journal examines the interaction between factors: physics, chemistry, biology, hydrology, and geology on inland waters ecosystems. Definition of inland waters here are all forms of water bodies on the surface of the earth to the landward of the line of the lowest tides either fresh or brackish water such as rivers, swamps, lakes, water, wetlands, reservoirs, ponds, and dams. Focus and Scope InaJL publishes research articles and reviews about all aspects of tropical limnology including theory, experiments, instrumentation or modelling. Papers can cover the following subject areas, which are used to categorize manuscripts: Physical Limnology Chemical Limnology Biological Limnology Paleo-Limnology Aquatic Ecology Aquatic Toxicology Ecohydrology Aquaculture Aquatic Environmental Engineering Inland Waters Management Hydroinformatics Socio-Limnology

Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan

Articles 49 Documents

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Surface Sediment Diatom as A Water Quality Indicator: Case Study: Cilalay and Cibuntu Ponds, Cibinong Aan Dianto; Taofik Jasalesmana; Luki Subehi; Ahmad Yusuf Afandi; Ardo Ramdhani
Indonesian Journal of Limnology Vol. 1 No. 1 (2020): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Diatom is classified as algae within the Division of Bacillariophyta. They are unicellular eukaryotic organisms characterized by siliceous cell walls that can be long preserved in sediments. Therefore, diatom analysis in sediment records is a potential water quality indicator for present or paleo studies. The current knowledge on the distribution and diversity of diatoms in the sediment in the urban pond is poorly known. This study aimed to identify the distribution and diversity of diatoms from the sediments of the pond. We expect to obtain a primary database of a variety of diatoms. The sediment samples were taken from Cibuntu and Cilalay Ponds in Cibinong Botanical Garden. Sediments were digested using HCL and H2O2. The resulting diatom solution was dried and transferred onto glass coverslip, which subsequently mounted onto microscope slides using Naphrax (Refraction index 1.7). Diatom identification was examined using a light microscope at 1,000x magnification. Diatom communities in Cibuntu Pond were dominated by species Aulacoseria ambigua, Eunotia bilunaris, Cymbopleura sp, Discostella stelligera, and Rossithidium sp with diversity index of 2.4 and species evenness of 0.8. Whereas, species Fragilaria sp, Eunotia monodon, Navicymbula pusilla, Eunotia bilunaris, and Pinnularia viridis were predominant in Cilalay Pond with diversity index of 1.6 and species evenness of 0.5. Based on the diatom community, Cibuntu Pond is eutrophic indicated by the occurrence of Aulacoseria ambigua, whereas Cilalay Pond is meso-eutrophic indicated by the dominance of Fragillaria. This exploratory survey provides the first inventory of diatom assemblage in Cibuntu and Cilalay Ponds for roughly inferring the environmental changes in a shallow lake ecosystem.

Flood Pulse and Aquatic Habitat Dynamics of The Sentarum Floodplain Lakes Area Hidayat Hidayat; Siti Aisyah; Riky Kurniawan; Iwan Ridwansyah; Octavianto Samir; Gadis Sri Haryani
Indonesian Journal of Limnology Vol. 1 No. 1 (2020): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

The Lake Sentarum is a complex of floodplain lakes in the middle part of the Kapuas River system in West Kalimantan, Indonesia. The area has a great ecological and economic importance, however, the Sentarum lakes complex and its catchment area are generally threatened by deforestation, fire, monoculture agroindustry, and pollution.The objective of this research is to establish the hydrological characteristics of the Sentarum lakes area and to reveal the dynamics of aquatic habitat resulted from changing water levels. Data were collected during our field campaigns of 2013-2017 representing the seasons. The water level was measured using a pressure sensor placed at the Lake Sentarum National Park resort, while rainfall data were obtained from the data portal of the Tropical Rainfall Measuring Mission. Inundation monitoring was carried out using a time-lapse camera. A hydrological model is used to simulate water levels beyond measurement period. Water quality and fish sampling were carried out at the lake area. Vegetation observation was carried out at the selected riparian zone of the lake area using the line transect method. Water level records show that the Sentarum floodplain lakes have two peaks of inundation period following the bimodal pattern of rainfall in the equatorial Kapuas catchment. This water level dynamics induced changes in water quality, nutrient availability, vegetation cover, and fish diversity found in the Sentarum lakes area. Despite its seasonal changes, water quality of Sentarum lakes is generally good and suitable for aquatic biota. Fish diversity of the Sentarum lakes is relatively higher during high water periods.

Dissolved Oxygen Profiles and Its Problems at Lake Maninjau, West Sumatra – Indonesia Luki Subehi; Iwan Ridwansyah; Takehiko Fukushima
Indonesian Journal of Limnology Vol. 1 No. 1 (2020): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

In general, the tropical lake in Indonesia is one of the unique ecosystems which are functioning in both ecological and economic services. This study aims to analyze the dissolved oxygen profile of caldera tropical lake represented by Lake Maninjau at West Sumatera, Indonesia, and its impacts. Lake Maninjau is not only for culture fisheries but also serves as important hydroelectricity power. Surveys at Lake Maninjau were conducted in August 2006, March 2014, September 2017, and April 2018. The results showed that the average depth is 105 m. It covers 13,260 ha of an area with an elevation of 461.5 m above sea level and a maximum depth of 165 m. The lake water comes from rainfall, small rivers, and the surrounding groundwater, with one outflow in the Batang Antokan River. Based on the measurement, it was observed that decreasing dissolved oxygen levels occurred at the surface to the depth of 40 m in 2006, and changed from surface to a depth of 12 m in 2018 indicating the worse condition of water quality compared with the previous years. Recently, bad water quality with mass mortality of cultured fish often occurs. Next, the percentage of fish cages area at Lake Maninjau in 2017 was 0.43%. Besides human activities, it was suggested that fish cages also contributed pollutant load to this lake. To maintain the sustainability of the lake, basic ecological information is necessary for the next study.

The Dynamic of Blue-Green Algae (Cyanobacteria) in Eutrophic Tropical Waters, The Cirata Reservoir Fariha Luthfiani; Sunardi Sunardi; Hikmat Kasmara
Indonesian Journal of Limnology Vol. 1 No. 1 (2020): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

The quality of reservoir waters depends on changes in their physical, chemical, and biological components. Changes in these parameters lead to the emerging of many problems in the reservoir, such as eutrophication and changes in the composition of the phytoplankton community in the reservoir ecosystem. This eutrophication impact can trigger an explosion of dangerous phytoplankton population, such as blue-green algae (Cyanobacteria). Research on the relationship between water quality and the community structure of Cyanobacteria has been carried out. This study used secondary data from the water monitoring report of the Cirata Reservoir from 2013-2017. This study aimed to obtain information on the community structure of Cyanobacteria and environmental parameters that affected the abundance of Cyanobacteria in the reservoir. Species abundance, diversity index, and dominance index were analyzed to determine changes in the community structure of Cyanobacteria in each of the years. Cyanobacteria abundances were classified using cluster analysis. Water quality parameters such as temperature, transparency, pH, carbon dioxide, nitrate, nitrite, and zooplankton abundance as independent variables, and levels of Cyanobacteria abundances as the dependent variable was analyzed using discriminant analysis. This study showed that the abundance of Cyanobacteria in the Cirata Reservoir is dominated by the Stanieria (a genus of the Pleurocapsales order) every year and the parameter that significantly affects the level of Cyanobacteria abundance was nitrate (NO3-N).

The Comparison of Different Diatom Digestive Method using HCl-H2O2 and HCl -KMnO4 in Telaga Pengilon Dieng Christopher Hardian Widyanta; Tri Retnaningsih Soeprobowati; Jumari Jumari; Riche Hariyati
Indonesian Journal of Limnology Vol. 1 No. 1 (2020): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Identification diatom has been applied as an important key to tracing paleoenvironmental conditions. The knowledge for diatom extraction from sediment is continuing, but the diatom digestive methods in the tropical area is still limited. Telaga Pengilon, located in Dieng Indonesia, is rich in organic material in the sediment, the sample also associates with epiphytic and benthic diatom. Therefore, extracting pure diatom frustules free of organic matter from the sediments is essential for this application. To find the appropriate method for extracting diatoms in Telaga Pengilon, this research compares HCl with H2O2 and HCl with KMNO4 as the digestive reagent. Based on the statistical result (HCl, KMnO4) less time consumed than (HCl, H2O2) during the digestive process (p<0.05) and produced the same amount of residue (p> 0.05). For Pinnularia and Frustulia, the majority of diatoms could be extracted using both methods. Under microscopy, the structure of diatoms remained almost perfect after digestion with H202, the striae clearly visible and the residue digested correctly. Another method using HCl, KMnO4 fragmentation was found for some Pinnularia, and for Frustulia, the striae are clearly visible. This study demonstrated that different diatoms have different resistance for reagents and some of the locations need different reagents because different materials are contained in the sediment and need help to remove material organically. As far as the HCl and H2O2 are appropriate digestion methods in a tropical area such as Telaga Pengilon, HCl, KMnO4 can be a substitute for the less time-consuming process.

Ammonia Toxicity to Rinuak (Gobiopterus brachypterus) of Lake Maninjau Gunawan Pratama Yoga; Octavianto Samir
Indonesian Journal of Limnology Vol. 1 No. 1 (2020): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Rinuak (Gobiopterus brachypterus) has an important economic value for local communities in Lake Maninjau - West Sumatra. The catch of G. brachypterus is decreasing along with the decline of the water quality. Ammonia is considered one of the most toxic pollutants in the aquatic ecosystem. It can be produced from the natural decomposition of organic matter or excreted by aquatic organisms as a nitrogenous waste product. Therefore, the information about toxicity ammonia in G. brachypterus is important as a management tool for fish conservation in Lake Maninjau. This research was aimed to find the LC50 value of ammonia in G. brachypterus. A static acute toxicity test was conducted for 96 hours. The fish were exposed to different test chemical concentration level for 96 hours, under static conditions. Mortality was recorded and concentration killed 50% of the fish was determined as LC50-96h, No Observed Effect Concentration (NOEC), and Lowest Observed Effect Concentration (LOEC). Values of LC50-96h, No Observed Effect Concentration (NOEC) and Lowest Observed Effect Concentration (LOEC) were 11.62 mg/L TAN or 0.27 mg/L NH3, 5 mg/L TAN or 0.12 mg/L NH3 and 16 mg/L TAN or 0,37 mg/L NH3, respectively. Ammonia’s Maximum Acceptable Tolerant Concentration (MATC) for G. brachypterus was 8.9 mg/L TAN or 0.21 mg/L NH3. The acute toxicity result showed that Rinuak (G. brachypterus) was sensitive to ammonia. The information about ammonia toxicity data is important for the determination of water quality guidelines in Lake Maninjau.

The Irradiance Optimation for Growing Spirulina fusiformis: Biomass, Phycocyanin, and Protein Production Awalina Satya; Tjandra Chrismadha; Ika Atman Satya
Indonesian Journal of Limnology Vol. 2 No. 1 (2021): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

The optimization of cyanobacterium microalgae cultivation technology to provide the need for food or feedstocks has recently attracted many investigators. An optimum operation on microalgae cultivation is important to reduce the excessive workload on the aquatic environment. Therefore, this study describes how the varied irradiance (2000 lux, 4000 lux, 6000 lux, 8000 lux, and 10,000 lux) treatments on a bubble column photobioreactor system affected biomass production, phycocyanin, and protein from cyanobacterium Spirulina fusiformis. The objective of this study was to obtain the optimum irradiance for producing maximum biomass, phycocyanin, and protein simultaneously. The results demonstrated some findings those were: 1) irradiance 10,000 lux made doubling time of growth earliest (only 24 hours) while 2,000 lux doubled within five days later; 2) light response curve showed that the increase of biomass concentration was linear with the increasing of irradiance; 3) a predictive model (Response Surface Method) proof that the most optimum quantity of the biomass (0.58 ±0.035 gL-1 dry weight), chlorophyll-a (0.090 ±0.023 % dry weight), and phycocyanin (2.44 ±0.00 gL-1 dry weight) were obtained on 10,000 lux, while protein contents of 79.18±5.47 % dry weight attained on the irradiance of 6000 lux. The maximum productivity of the biomass, chlorophyll-a, phycocyanin, and protein was ~Pbiomass of 24.95 mgL-1day-1; Pchl-a of 2.25E-02 mgL-1day-1; Pphycocyanin of 1.88E-02 mgL-1day-1; and Pprotein of 17.56 mgL-1day-1. Enhancement of irradiance up to 5 folds lead to the increasing of biomass chlorophyll-a, phycocyanin, and protein productivity, attained to 1.7, 5.01, 4.13, and 2.81 folds, respectively. The irradiance had a significant influence on the production of the metabolites; therefore, the irradiance must be optimized.

Epilithic Diatoms Diversity in The Reservoir of Universitas Diponegoro, Semarang Jihan Afifah; Riche Hariyati; Tri Retnaningsih Soeprobowati
Indonesian Journal of Limnology Vol. 2 No. 1 (2021): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Diatom biodiversity is an increasing concern due to growing human impact, the study was carried out in one of the most important water storage reservoirs of Tembalang Region. The anthropogenic activity influence of diatom diversity in the UNDIP Reservoir. The reservoir of Universitas Diponegoro (UNDIP) Semarang was an area of 1.24 km2, with the deepest part of 15 meters, and able to accommodate water up to 13500 m3. This study aims to determine the relative abundance, diversity, evenness, dominance of diatoms and is expected to provide information about the condition of the waters in the Diponegoro University Reservoir, Semarang. Littoral benthic diatoms of five locations were sampled. Diatoms slides were prepared from scraping the rock surface with an area of 3x3 cm, dilute in 50 ml distilled water, and identification under the microscope with 1000 magnification. Analysis of the physical characteristics of the waters includes Temperature, pH, DO, TDS, Conductivity, and Turbidity. The diatom composition in UNDIP Reservoir consists of 72 species that belong to 20 genera. The Shannon-Wiener diversity index (H') ranges from 2-3. The dominance index (D) ranges from 0.05-0.17. The Evenness index (E) ranges from 0.54-0.90. Water quality parameters showed a fairly good value in the growth of diatoms. Dominated by periphytic taxa such as Cyclotella meneghiniana (15.72%), Brachysira microcephala (9.93%), and Achnanthidium minutissima (6.84%) which are widely distributed and live at temperatures of 20-30?C and pH >6.

Citarum River Water Pollution and Stress Responses in The Tolerant and Sensitive Fish Sunardi Sunardi; Kabul Fadilah; Nadia Istiqomah; Miranti Ariyani; Desak Made Malini; Syifa Yolanda; Azalea Putri; Nining Ratningsih
Indonesian Journal of Limnology Vol. 2 No. 1 (2021): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Severe river pollution creates a stressful environment for aquatic organisms, causing disturbances to their health and leading to their extinction. Thus, in this study, the stress responses of tolerant (Oreochromis niloticus) and sensitive (Cyprinus carpio) fish to river pollution in the Citarum River, Indonesia were investigated. The two groups of fish were exposed to varying levels and lengths of water pollution, their blood was sampled, and stress responses were identified. The red blood cells (RBC) count, haemoglobin (HGB), haematocrit (HCT), white blood cells (WBC) count, blood glucose levels, and derived haematological indices such as mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH) and mean corpuscular haemoglobin concentration (MCHC), were measured. Significant changes in these indices, with tendential changes in RBC and HCT, were observed, indicating that stress responses had occurred in both groups of fish. The sensitive fish recorded more pronounced changes in their haematological activities, with greater amounts of blood parameters being altered in response to water pollution exposure. This result suggested that the sensitive fish were more susceptible to environmental stressors and were, therefore, more vulnerable to extinction in a polluted natural environment.

Spatial Variations in the Distribution of Benthic Macroinvertebrate Functional Feeding Groups in Tropical Rivers Marielle Kristine Doong; Jonathan Anticamara; Francis Magbanua
Indonesian Journal of Limnology Vol. 2 No. 1 (2021): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Functional feeding group (FFG) is an approach that classifies macroinvertebrates based on their utilization of organic matter food resources. Across streams and rivers, variations in the distribution of FFGs reflect the unequal distribution of food resources, which are affected by varying environmental conditions and disturbances to the ecosystem. In the tropics, the distribution of FFGs does not follow the pattern observed in temperate streams. This study aims to (1) determine the FFGs present in selected Philippine tropical streams, (2) assess the variations in FFG distributions and how the distributions vary across space, and (3) evaluate how FFG distributions are affected by certain environmental factors and habitat structure. Benthic macroinvertebrates were collected in 2010 from five sites and assigned to their primary FFG based on published literature. Across study sites, the macroinvertebrates collected were classified into gathering collectors (total n = 4,640), scrapers (n = 1,670), filtering collectors (n = 1,545), predators (n = 632), and shredders (n = 270). Within and between sites, these FFGs varied significantly. Variations explained the upstream-downstream and north-south variations in the mean of FFG abundance in width and depth of the stream, discharge, temperature, pH, riparian vegetation, and habitat stability and variability. This study reveals that the FFG approach is a useful bioassessment tool in tropical aquatic systems. However, there is still a need for verification of the findings in other streams and seasons.

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Ali Rahmat

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Pusat Riset Limnologi dan Sumber Daya Air – BRIN Kompleks CSC (Cibinong Science Center) Jalan Raya Jakarta Bogor km. 46 Cibinong, Bogor Jawa Barat, 16911- Indonesia

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Jawa barat

INDONESIA

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Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Ali Rahmat

Contact Email alirahmat911@gmail.com

Phone +6282278231661

Journal Mail Official inajl.mli2022@gmail.com

Editorial Address Pusat Riset Limnologi dan Sumber Daya Air – BRIN Kompleks CSC (Cibinong Science Center) Jalan Raya Jakarta Bogor km. 46 Cibinong, Bogor Jawa Barat, 16911- Indonesia

Location Kota bogor, Jawa barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Ali Rahmat

Contact Email
alirahmat911@gmail.com

Phone
+6282278231661

Journal Mail Official
inajl.mli2022@gmail.com

Editorial Address
Pusat Riset Limnologi dan Sumber Daya Air – BRIN Kompleks CSC (Cibinong Science Center) Jalan Raya Jakarta Bogor km. 46 Cibinong, Bogor Jawa Barat, 16911- Indonesia

Location
Kota bogor,

Jawa barat

INDONESIA