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Contact Name
Fajar Setiawan
Contact Email
faja006@brin.go.id
Phone
+6281297425123
Journal Mail Official
JLWRjournal@gmail.com
Editorial Address
Gedung Laboratorium Penginderaan Jauh, KST Soekarno Jl. Raya Jakarta-Bogor Km. 46 Cibinong 16911 Bogor Jawa Barat, Indonesia
Location
Kota tangerang selatan,
Banten
INDONESIA
LIMNOTEK
Published by BRIN Publishing
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.
Articles 5 Documents
Search results for , issue "Vol. 30 No. 1 (2024)" : 5 Documents clear
Characteristics of Phosphate Sorption on Surface Sediments: A Study in Kendari Bay Aisyah, Siti; Rohaeti, Eti; Budi Santoso, Arianto; Rafi, Mohamad
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.2024.2019

Abstract

Phosphate adsorption and desorption are significant processes that influence the presence of phosphate in aquatic ecosystems and regulate the concentration of phosphate at the water-sediment interface. This research aims to investigate the characteristics of phosphate adsorption and desorption in Kendari Bay sediments, study the relationship between adsorption capacity and sediment characteristics and its phosphorus fraction, and evaluate its potential contribution to the overlying water column. Physicochemical measurements of the water and sediments were performed in the sampling location and the laboratory. Two types of adsorption-desorption kinetics models and two types of isothermal adsorption models were used to estimate the adsorption rate and capacity of the surface sediments. Adsorption kinetics and desorption kinetics experiments produced pseudo-second-order kinetic model equations with regression coefficients (R2) of 0.865–0.936 and 0.886–0.947, respectively. The isothermal adsorption experiment follows the Langmuir equation model with R2 = 0.964. The maximum adsorption capacity (Qmax) value was 156.3–227.3 mg/kg, and the phosphate concentration value at zero equilibrium (EPC0) was 0.0026–0.0047 mgP/L. Notably, the EPC0 value was higher than the SRP concentration, indicating that the resuspension of phosphate ions from sediment into the water column could occur. Furthermore, there was a correlation between Qmax values with OP, Al-P, Fe-P, clay particles, and organic materials. Potential practical applications may include integrating sediment adsorption capacity data into ecosystem models to inform nutrient management strategies and promote sustainable coastal development in Kendari Bay and beyond.
The impact of weather Condition Changes on Vertical Distribution of Sulfides in Lake Maninjau Based on Observation Data Putri, Mutiara Rachmat; Jasalesmana, Taofik; Abdurrachman, Mirzam; Henny, Cynthia; Nomosatryo, Sulung; Albani, Alif Shidqie
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.2024.2203

Abstract

Sulfide is a crucial parameter in volcanic lakes, as its levels and fluctuations in the lake determine the origin of sulfide and the extent of its impact on the lake ecosystem. In stratified lakes, the sulfide produced tends to be retained beneath the oxic layer. The sulfides rise towards the surface as the oxic layer thins triggered by decreased water column thermal stratification. Meanwhile, the strength or weakness of thermal stratification is greatly influenced by weather conditions. Lake Maninjau is a volcanic lake with a relatively high sulfide content. Its vertical distribution in the water column is highly dependent on the stratification of the water column. When stratification disappears, sulfide rises to the surface (locally known as tubo belerang) and has a negative impact on surface biota. The objective of this study is to examine the distribution of sulfides in the water column of Lake Maninjau under two different weather conditions. We perform two surveys to measure physicochemical parameters and sulfide concentration on 26‒29 November 2022 and 25‒26 August 2023 considering the seasonal pattern. We found that air temperatures and sunshine duration combined with precipitation and wind speed drive the thermal stratification of the water column. The lower air temperature, shorter sunshine duration, higher precipitation, and stronger wind speed in the first survey (west monsoon) compared with the second survey (east monsoon) resulted in lower stratification and triggered the elevated sulfide to the surface. In the middle of the lake, the surface sulfide measured during the first survey was 4.16 µg/L. Meanwhile, in the second survey, it was only observed at 1.16 µg/L. The distribution of sulfides within the water column of Lake Maninjau is regulated by the stratification of the water column, a process directly impacted by weather conditions.
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.

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