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LIMNOTEK
Published by BRIN Publishing
ISSN : 08548390     EISSN : 25498029     DOI : https://doi.org/10.55981/limnotek.xxxx.xxxx
Core Subject : Science, Social, Engineering,
Earth & Planetary Sciences Engineering Environmental Science
The journal establishes an integrated understanding of the interface between natural processes of water resources and inland water ecosystems with their human domains. Incorporating broad themes concerning ecology of inland water ecosystems and perspectives regarding sustainable utilizations of the water resources. Science on inland water ecosystems is an applied multi/interdisciplinary field relating to efforts to monitor, manage, and restore both fresh and brackish water ecosystems. The journal thus underlines significant work that draws on and incorporates elements of hydrology, meteorology, ecology, limnology, ecological economics, and social environmental sciences related to water resources and inland water ecosystems. The journal allows for both monodisciplinary and interdisciplinary submissions and a broad range of methodological approaches, thus appealing to diverse readers. Specific research areas covered include: modeling the impacts of management scenarios (socio-economics-ecological-hydrological impacts); simulation of the alteration of the quality of inland water ecosystems (long-term data series); novel approaches for alternative utilization of inland water ecosystems; the development of novel indices/ criteria to assess the quality of inland water ecosystems; assessments of the economic value of inland water ecosystems’ ecosystem services; the advances of alternative governance to sustainably manage inland water ecosystems; progress on alternative conservation strategies for inland water ecosystems; the development of alternative technologies to mitigate impacts of anthropogenic activities on inland water ecosystems; the advances of technologies to rehabilitate and to restore the quality of inland water ecosystems, water disaster risks and disaster preparedness, resiliencies of water infrastructure and management. Further, research on water resources is concerned with the conservation of quantity and quality of water. Thus, topics related to water resources such: water resources management, water resources information system, water policies and planning, hydrology and hydrogeology, water quality and environment, hydraulics, water and wastewater treatment sustainability, resilience, and adaptation of water resources and infrastructure to uncertain and evolving environments, surface and groundwater resources will be important key part from the journal.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Proses Permukaan Bumi
Articles 40 Documents
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Sediment capping technology for eutrophication control and its potential for application in Indonesian lakes: a review Sunaryani, Astried; Soewondo, Prayatni; Santoso, Arianto Budi
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 29 No. 1 (2023)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2023.2366

Abstract

Eutrophication occurs when the lakes become enriched with nutrients. Some nitrogen and phosphorus fractions will settle in sediment, and others will be released back into the overlying water column. Excess nutrients in water bodies resulting in hypoxic to anoxic conditions that can cause a mass fish death. Hence, we need a sediment management strategy to minimize resuspension and transport of sediment back into the water column. Sediment capping is a containment technology to reduce the release of nutrients from sediment as a strategy for eutrophication control. This study aims to provide insight into sediment capping technology, including several considerations in capping design, as well as information on several active materials that have been applied as capping materials and their efficiencies. Capping materials such as calcite, zeolite, bentonite, activated carbon, sludge, biochar, and gypsum from previous studies showed the efficiency of 54–99 % nutrient reduction with capping duration of 10–300 days in some eutrophic lakes. Sediment capping technology has successfully promoted lake ecosystem restoration in other countries, and this technology has the potential to be applied in Indonesian eutrophic lakes as a strategy for eutrophication control and sustainable management of lake ecosystems by considering the selection of the most effective, efficient, easy, inexpensive, and eco-friendly capping materials.
Hydrochemical dynamics of stream following rainfall events at agricultural catchments in New Zealand Yulianti, Meti; Murray, Rachel
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 29 No. 2 (2023)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2023.2398

Abstract

One of the prerequisites for efficiently managing lake water quality is reliable data regarding the quantity and quality of inflows water, mainly the export of nutrients from the catchment area during rainfall events. We investigated the dynamic characteristics of hydrochemicals concerning rainfall events in agricultural stream waters flowing into eutrophic lakes situated on the North Island’s central plateau of New Zealand. We utilized isotopic composition of water (δ2H-H2O and δ18O-H2O) and nitrate (δ15N-NO3- and δ18O-NO3-) along with high-frequency hydrochemical data for source identification of water and nitrate during a drought period (2020). Our findings indicate that it is essential to initially grasp the fundamental mechanisms associated with rainfall events to formulate effective strategies for minimizing nutrient losses. The methodology outlined in this research integrates stable isotope hydrology with water quality monitoring initiatives, facilitating the understanding and managing the primary governing mechanisms behind diverse contaminant losses from land to adjacent water bodies, explicitly focusing on nitrates. This approach establishes a framework that can assist in devising measures for water quality improvement capable of anticipating the repercussions of substantial rainfall events more effectively.
Assessment of Heavy Metals Using the Enrichment Factor and Geoaccumulation Index in Menjer Lake, a Tropical Volcanic Lake Fadlillah, Lintang; Widyastuti, M; Rachmawati, Alfina Ayu; Ulfa, Azura
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 1 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.3880

Abstract

Lakes are recognized as vulnerable to pollution, including Menjer Lake, whose catchment area is dominated by agricultural lands and features floating net cages in the water body. The heightened contamination risk within the lake primarily stems from the accumulation of heavy metals, compounds known for their profound toxicity. The high-level concentration of heavy metal in sediment aligns with the level of water toxicity, underscoring the urgent need for thorough assessment and monitoring. The research focused on assessing heavy metal concentration and distribution through spatial analysis. Toxicity levels were evaluated using the enrichment factor (EF) and Geoaccumulation Index (Igeo). This study collected eight samples each during the rainy season of 2022 and 2023. The heavy metals were tested using an Atomic Absorption Spectrophotometer (AAS), including Pb, Cd, Cr, Fe, Al, and Cu. Comparatively, the mean concentration of heavy metals in 2023 was slightly higher for Fe and Al than in 2022. Moreover, Cd was not detected in either 2022 or 2023. The variety of land use and land cover has consequences on the spatial distribution of toxicity levels, showing an influential correlation between Al, Pb, and Fe metals with locations associated with cropland and floating net cages. Additionally, highly steep slopes significantly affected erosions that induced sediment from agricultural land use, further underscoring the multifaceted nature of environmental risk factors.
Assessment of Natural Bentonite Efficacy for Dye Removal in Textile Wastewater Treatment : Implication for Mitigating River Citarum Pollution Fathan Nabhani, az; Zahidah; Herawati, Heti; Zulti, Fifia
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 1 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.4848

Abstract

Textile industries contribute significantly to the economy but release harmful pollutants into the environment, especially rivers.  The effluent from the textile industry contained toxic dyes that can harm the river ecosystem.  Several studies have been conducted to reduce toxic dyes in a river system using bentonite as an adsorbent to reduce river pollution effectively.  However, the effectiveness of bentonite still needs to be tested again using textile liquid waste that has not gone through any waste processing at all.  Citarum is one of the main rivers on Java Island, which suffers from textile effluent, especially azo dyes which are toxic, mutagenic and carcinogenic which can harm the aquatic ecosystem.  Therefore, this study aims to implement natural bentonite as an adsorbent to remove dyes from textile wastewater.  We performed a laboratory test to adsorption on bentonite and textile wastewater considering the variation of adsorbent weight of 10 g and 20 g in 100 mL of textile wastewater stirred in an Erlenmeyer flask at room temperature for 0-300 minutes.  The initial concentration of textile wastewater used was 10%, 30%, and 50%.  We found that the maximum dye removal efficiency was 91.25% with 10% initial concentration treatment, 20 g adsorbent weight, and 60 minutes contact time.  Longer contact time will increase the removal efficiency and adsorption capacity, while higher adsorbent dosage will decrease the concentration of dyes in wastewater.  Efficient textile wastewater treatment has improved water quality, effectively meeting river water quality standards and environmental regulations.
UAV Mapping for Flood Routing in Steep and Densely Vegetated Areas: Insights from the Contok River Basin, Garang Watershed, Indonesia Hanafi, Fahrudin; Kurniawan, Edi; Priakusuma, Dwi; Kubiak-Wojcicka, Katarzyna
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 1 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.5028

Abstract

This research utilizes photogrammetry to assess flood routing dynamics in the Contok river basin, a sub-watershed with a challenging landscape characterized by steep slopes, dense vegetation, and meandering patterns. The objectives are to assess Unmanned Aerial Vehicle (UAV) mapping accuracy, evaluate the river's capacity for design flood volumes, quantify the impact of land cover changes on surface runoff, and provide insights for early warning systems and watershed conservation strategies. The study area, encompassing the Contok River Basin, a sub-watershed of the Garang Watershed, covers 7,413 km² and includes a stream length of 5,274 meters in Semarang City, Central Java, Indonesia. This research employed image processing of aerial photographs and satellite imagery. Aerial photos captured using UAV data were utilized to derive elevation data and cross-sectional profiles of the Contok River, essential for understanding channel morphology and hydraulic characteristics. Concurrently, satellite imagery was used for land cover analysis, identifying vegetation and built-up areas that influence surface runoff dynamics. Hydrological analysis was performed to quantify discharge magnitudes, simulated against river cross-sections to evaluate flood behavior under varying scenarios. Our proposed UAV mapping provides adequate accuracy for small and local areas. Furthermore, it remains reliable for flood routing analysis. We discovered that the capacity of the Contok River channel in the downstream area allows it to convey design flood discharges up to a 50-year return period, contrary to the upstream area, it overflows. Notably, the shift from vegetated to built-up and agricultural areas significantly contributes to the 10.6% increase in surface runoff. This research highlights the role of UAV-based photogrammetry in assessing and mitigating flood hazards amidst evolving land cover patterns. It also enhances the understanding of flood dynamics and thus provides insights that will serve as a reference for flood early warning systems, flood management practices, and watershed conservation.
Estimating Paddy Field Water Requirements Using CROPWAT 8.0: A Case Study in Batang Anai Irrigation Area, West Sumatra, Indonesia Syahlevi, Sutan Ikhsan; Nurhamidah; Junaidi
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 2 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.4985

Abstract

The accurate estimation of crop water requirements is critical for efficient water resource management, particularly in regions with limited irrigation resources. This study aims to evaluate the water requirements for rice crops using the CROPWAT 8.0 model and compare the results with the Penman Modification Calculation method, as specified in the Irrigation Planning Standards (KP-01). This research is conducted using climatological data from the Kandang IV Station located near Batang Anai Irrigation area, focusing on key factors such as effective precipitation, air temperature, humidity, wind speed, sunshine duration, and topography. The representative Soil of the local area was incorporated into the analysis. The study finds that the average evapotranspiration (ETo) using CROPWAT 8.0 was 3.09 mm/day, with the peak water demand for rice occurring at the end of August, reaching 1.51 L/s·ha. These findings align with the study’s objective of assessing irrigation demand for rice crops and offer a comparison of methodologies used to estimate water requirements. The results emphasize the need for improvements in the default crop and soil data used by CROPWAT 8.0 to better align with local agricultural conditions in Indonesia. This study contributes to the ongoing development of more accurate models for water requirement estimation and highlights the importance of region-specific calibration in irrigation planning. Further research is needed to enhance the model's functionality and to explore alternative methods for improving water use efficiency in rice farming.
Plankton Community Structure in the Estuaries of Banten Bay, Banten Province, Indonesia Sugiarti; Aldiano Rahmadya; Denalis Rohaningsih; Relita Novianti; Agus Waluyo; Aisyah, Siti; Rosidah
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 2 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.5100

Abstract

Estuaries in Banten Bay support fisheries activities by serving as critical habitats for plankton communities, which form the foundation of the aquatic food web. This study aims to determine the structure of plankton communities, both phytoplankton and zooplankton, as baseline data for fisheries management in Banten Bay estuaries. Fieldwork was conducted in April and October 2021 at four estuaries in Banten Province: Karangantu, Wadas, Cengkok Estuary, and Pamong. Water samples were collected for plankton identification and analysis of physical and chemical water quality parameters in situ and laboratory. Key structural attributes, including Shannon - Wiener diversity index (H'), evenness index (E), dominance index (C), trophic status and canonical correspondence analysis (CCA), were also assessed. The highest abundance of phytoplankton was found in the Karangantu estuary, while the highest abundance of zooplankton was observed in the Pamong estuary, with overall abundance higher in April. Phytoplankton diversity was highest in Karangantu in October, whereas zooplankton diversity peaked in April. Plankton diversity indicated slight to moderate pollution levels, and trophic status analysis revealed eutrophic to hypertrophic conditions across the estuaries, suggesting high nutrient levels that support fish productivity. CCA revealed significant correlations between environmental variables and plankton composition and abundance. Mitigation strategies are recommended to monitor the growth of Chaetoceros sp. and Bacteriastrum sp., especially during the dry season. Long-term monitoring of water quality and plankton dynamics is essential in other estuaries of Banten Bay to assess nutrient loading impacts and develop strategies to mitigate harmful algal blooms. These efforts are critical to ensuring sustainable fisheries management in the region.
A Systematic Review of Research Trends in Methane Emissions from Rice Fields in Asia I Gusti Ayu Agung Pradnya Paramitha
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 2 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.5101

Abstract

Global greenhouse gas levels are significantly impacted by methane emissions from rice fields, especially in Asia, where the majority of the world's rice is produced. This review analyzes research trends on methane emissions from rice fields in East, Southeast, and South Asia, focusing on factors influencing emissions and the effectiveness of mitigation strategies. We synthesized data about 169 papers published between 2000 and 2023 from Web of Science and Google Scholar were merged in Mendeley. The results were visualized using VOSviewer. It covers key aspects such as water management, soil types, farming practices, and rice varieties. Our findings suggest that water management practices, including intermittent drainage and pulse irrigation, play a critical role in reducing methane emissions. Variations in emissions levels are also influenced by soil types, farming practices, and rice varieties. The research highlights significant regional differences, with China and Indonesia being major contributors to emissions, while countries such as Japan and South Korea have implemented effective mitigation measures. Emerging research topics include the impact of organic matter inputs and innovative rice cultivars on emission levels. This review underscores the need for region-specific strategies and research in less studied, such as rainfed and peatland rice fields, to enhance global understanding and control of methane emissions from rice cultivation. The boundary of this review is this manuscript only focusing on methane emissions in artificial wetlands such as rice field area not other water bodies, therefore, further research review in other freshwater ecosystems is encouraged to be done.
Morphometric and Genetic Variations of Freshwater Eels (Anguilla spp.) in Poso River, Central Sulawesi: Implications for Conservation Strategies Samir, Octavianto; Kamal, Mohammad Mukhlis; Kurnia, Rahmat; Larashati, Sekar; Triyanto; Widoretno, Mey Ristanti
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 2 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.5582

Abstract

The freshwater eel, Anguillids, is a valuable nutrition and commodity fish found in various freshwater environments. However, the world's population of Anguillids are declining because of habitat degradation, pollution, and barriers to migration, all of which are prevalent threats to freshwater ecosystems such as the Poso River in Central Sulawesi. Establishing conservation areas is one of the efforts to protect Anguillids and their habitats, which requires information on the anguillids morphometrics and genetics, where high morphometric and genetic variations are indicators of adaptation or evolution of the species to survive environmental changes. Therefore, the study aims to assess the morphometric and genetic variations  in the Poso River, Central Sulawesi. Samples were collected along the Poso River in the range of May 2021 and August 2023 . Different fishing gears were used depending on the location and Anguillids’ phase of life. A total of 150 eel samples were used for morphometric analysis, out of which 38 were selected randomly for the genetic one. Genetic diversity analysis was performed based on the Cytochrome c Oxidase I (COI).  The study successfully identified three species: A. bicolor, A. celebesensis, and A. marmorata. The key characteristic distinguishing the three species was ADL/TL ratio. Most coefficients of variation of morphometric characters of each species were above 10%, indicating medium to high variation. A total of 11 haplotypes were identified, of which six belong to A. marmorata and five to A. celebesensis. Generally, haplotype diversity was low, ranging from 0.2923 to 0.9333, and nucleotide diversity ranged from 0.0005 to 0.0046. The low genetic diversity observed in this study is likely a result of the migratory nature of Anguillids. Morphometric and genetic variations can support restocking as a conservation strategy to bolster wild populations. However, comprehensive studies must be conducted to understand all aspects impacting Anguillid resources for establishing conservation areas to protecti their populations and habitats.
Comparative Water Quality Assessment of Cascade Urban Lakes: Dori, Walini, and Dora in Bogor Regency, Indonesia Rahmadya, Aldiano; Yusuf Afandi, Ahmad; Rohaningsih, Denalis; Novianti, Relita; Verawati, Dewi; Dianto, Aan
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 2 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.5611

Abstract

Urban lakes are critical in flood mitigation, providing fresh water, and offering green spaces in urban environments. However, many urban lakes face increasing ecological pressures from various human activities. This study assesses the water quality and morphometric conditions of three urban lakes—Dori, Walini, and Dora in the Cibinong Botanical Garden Complex in Bogor Regency, located in a high-rise residential area. The study aims to evaluate the current water quality, identify contributing factors to water quality degradation, and compare conditions across the three lakes. Data was collected between January and April 2023, utilizing a Geographic Information System (GIS) for morphometric analysis and water quality measurements. Water quality was assessed in accordance with the standards set by Government Regulation No. 22 of 2021. Results indicate that Lake Dori, Walini, and Dora have surface areas of 3,406.96 m², 7,668.37 m², and 13,599 m², respectively. Based on water quality classifications, both Lake Walini and Lake Dori meet Class III standards (suitable for water use), while Lake Dora, though also in Class III, exhibits milder pollution indicators. These findings provide important insights for managing urban lakes and can guide future environmental policies.

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