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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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Status of Lake Taal Fisheries Amid Volcanic Threat and Covid 19 Pandemic : A Preliminary Study Maria Theresa M Mutia; Myleen L. Magistrado; Myla C. Muyot; Maria Teresa M. Alcazar; Benjie D. Tordecilla; Lilian C. Garciaa; Ma Lourdes D. Merilles
Indonesian Journal of Limnology Vol. 3 No. 1 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

The status of fishery resources of Lake Taal – the third largest lake in the Philippines was assessed to provide updated information on the capture fisheries following the Taal Volcano eruption and COVID-19 pandemic in 2020. Using the methodology of the National Stock Assessment Program of NFRDI, this study was conducted from January to December 2021 at 15 fish landing sites around the lake. In addition, interview schedules of 100 fisherfolk respondents from 11 coastal municipalities were also conducted to assess the effect of the volcanic eruption and pandemic on the livelihood of fisherfolk. Annual capture fisheries production was estimated at 1,004.14 MT. About 47% percent of these comprised the endangered freshwater sardine Sardinella tawilis while 31% are introduced species, and 22% migratory and/or native species. Current fisheries inventory showed that the number of fishers, fishing gears and fishing boats increased compared to 2018 inventory. The increased number of fisherfolk showed that more residents became dependent on the fishery resources of the lake. In the aftermath of volcanic eruption, reported impacts include reduction of fishing activity due to damaged gear and boat, fear of open water fishing, and reduction in demand for fish due to “unsafe” claims. Though many boats and gear were damaged in the 2020 volcanic eruption, passive or stationary fishing gears such as fish traps and fish corrals noticeably increased. During the peak of the community quarantine due to COVID-19, movement of fisheries products were hindered which led to the disruption of supply chain, and reduction of fishing activities due to lesser demand. Though there were times when fishing activities were halted due to recurring volcanic threat and pandemic, sustaining food and livelihood are what drive the local fisherfolk to learn to live and adjust adaptively to the current situation.

Detection of Pesticide Residues in The Canal Irrigation System of The Upper Mekong Delta, Cambodia Sombath Keo; Khy Eam Eang; Chanvorleak Phat; Sereyvath Yoeun; Leakkhina Meak; Kong Chhuon; Sylvain Massuel
Indonesian Journal of Limnology Vol. 3 No. 1 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Pesticide refers to all chemical compounds which are mainly used in agriculture to control pests and weeds. In many developing countries, the increasing use of pesticides is due to agricultural activities for intensification purposes. The potential consequences for the environment, health and biodiversity are difficult to anticipate, as the presence of pesticides is difficult and rarely monitored. This is the case in the upper Mekong delta in Cambodia where many irrigation systems are being developed. The aim of the study is to provide a preliminary assessment of the situation by looking for the presence of pesticides in the water within a representative irrigation system. Water samples were collected in canals, river, irrigated rice field and groundwater in both dry and wet seasons. Solid-phase extraction (SPE) and gas chromatography-mass spectrometry (GC-MS) methods were used to purify and analyze the samples. Among 37 pesticides used by farmers and detectable, 6 were found in water. Paclobutrazol and propiconazole are moderately hazardous, hexaconazole is slightly hazardous, fluquinconazole presents acute toxicity and azoxystrobin is unlikely to present acute hazard. Hexaconazole and paclobutrazol are classified as highly persistent in water, while others are slightly to moderately persistent. Pesticides were found mostly in groundwater but they were found in the canals and rice field only in dry season. This means that pesticides may accumulate in the aquifer while the flooding has a flushing effect on pesticides. Further analyses should be extended to a bigger scale and be continued monitoring.

The Study on Water Balance in Mlech Reservoir Under Climate Change Effects, Kampot Province Ramy Lun; Amret Chham; Sophos Chea; Vichhainin Khem; Kunavath Ou; Sovithia Samreth
Indonesian Journal of Limnology Vol. 3 No. 1 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

The Mlech Water Treatment Plant (WTP) has produced 2,000 m3/day of drinking water using raw water from Mlech, Kampot province. Since water demand would be increased in the future, so that the extension water treatment capacity will be the main challenges in correspondence with the development of planning of PPWSA. The water balance estimation is also the critical point in order to make a good decision on extension WTP at existing area. Therefore, the objectives of this study aimed to analyse the water balance in Mlech reservoir by using data from 2002 to 2011, in 2030s and in 2050s. The Rational Method was applied for estimating the streamflow into the reservoir. Water balance was computed following hydrological concept. SWAT and HEC-HMS models were performed to predict the future streamflow. The future climatic data were projected from 2012 to 2050 under climate change scenario RCP 4.5 with three general circulation models (GCMs) including IPSL-CM5A-MR, GISS-E2-R-CC and GFDL-CM3. As a result, the water balance remains about 11.40 Mm3/year in reservoir in baseline. In 2030s, the water quantity will be approximately 58.70 Mm3/year, 62.09 Mm3/year and 59.58 Mm3/year under model IPSL-CM5A-MR, GISS-E2-R-CC and GFDL-CM3, respectively. In addition, the water quantity will be slightly changed in 2050s comparing to 2030s. According to the scenario of extension WTP capacity, this study found that the water flow into downstream will be decreased to 37.14 Mm3/year to 33.84 Mm3/year when WTP’s capacity increased from 2,000 m3/day to 14,000 m3/day,respectively. Furthermore, the volume of water overflow to downstream for irrigation uses is 30.32 Mm3/year when WTP’s capacity increased to 12,000 m3/day in 2050s. Irrigation water need is about 28.00 Mm3/year. In recommendation, the total WTP’s capacity should be extended from 2,000 m3/day to 10,000m3/day from Mlech reservoir based on the future water demand.

The Distribution of Invasive Tilapia Throughout A Tropical Man-Made Lake With Special Reference to Temengor Reservoir, Malaysia Muzzalifah Abd Hamid; Amir Shah Ruddin Md Sahb; Siti Azizah Mohd Nor; Mashhor Mansor
Indonesian Journal of Limnology Vol. 3 No. 1 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

With a surface area of 15, 200 ha, the Temengor Reservoir, in the northwestern state of Perak was selected among other lakes in Malaysia for the development of a large tilapia aquaculture facility in 2008 due to its favourable environmental conditions. Tilapia has never been recorded at Temengor Reservoir prior to the establishment of this facility. However, preliminary observations in a previous study detected tilapia species in the natural waters of this lake, strongly suggesting these were escapees from the floating cages which had invaded the natural waters. Following that, a study was conducted to assess the distribution of these escapees throughout the Temengor Reservoir. The cultured tilapias are easily recognizable with elongated mouth and body, and long caudal fin. The sampling was conducted using gill nets. The distribution of the escaped tilapia throughout the Temengor Reservoir was mapped based on previous data and current data on the fish checklist conducted at different sampling points of this lake, and the occurrence (presence/absence) of escaped tilapia was recorded. A comparative analysis was conducted at several number of points among three sampling areas, according to the radii from the fish cage facility; <5km (S1), 5-15km (S2), and >15km (S3). The ANOVA showed significant differences (p<0.05) in Catch per Unit Effort (CPUE) weight between the three sampling areas. As tilapia is a highly successful global invasive species, the presence of tilapia at these and other locations at Temengor Reservoir should be rigorously monitored. Complete eradication of tilapia in the lake is of high urgency. We recommend intensive targeted fishing of the species in the vicinity of the cages and biological control by native predators to preserve and conserve the native fish species at Temengor Reservoir.

Determination of Minimum Number of Frustule for Identification of Diatoms in Telaga Cebong, Dieng, Central Java, Indonesia Oki Rachmalia Rozi; Tri Retnaningsih Soeprobowati; Riche Hariyati
Indonesian Journal of Limnology Vol. 3 No. 2 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Diatoms belong to the division of Bacillariophyta; their cell walls composition of silica (SiO2) was the primary characteristic of their structure. Diatoms are good for water quality assessment and paleolimnological analysis. The determination number of frustule which has to be counted for diatom is one of the critical steps in process identification. Several studies usually use a range starting from 100-600 frustules, which refers to the "fixed count" method, that is time-consuming. Research about the minimum frustules number that is acceptable for water character in Indonesia has been limited studied. This research aim is to determine the minimum number of frustules need to identify the diatom assemblage, especially at Telaga Cebong, Dieng, Central Java, Indonesia. The sediment samples were taken vertically with D’Section corer until a depth of 200 cm sediment samples then sliced every 10 cm. The labwork activites consisted of digestion, preparation, enumeration, and identification of diatom species with the numberof frustules of 100,200, 300, 400, 500, and 600. The diatom data are analyzed with the formula for the maximum efficiency value. Based on 19 sediment samples from different sediment layers, the maximum efficiency value obtained was above the range of 0.85 to 0.92. The number of identified species remained stable after a minimum of 300 frustules. Therefore, at least 300 frustules are needed for identification of diatom for paleoreconstructions at Cebong Lake.

Puah Reservoir, Malaysia: A Preliminary Limnological Finding at the Newly Operated Hulu Terengganu Hydroelectric Project (HTHEP) Alyaa Filza Effendi; M K Abubakar; A S Ruddin; A N Saidin; S M Husin; A Md Shukor
Indonesian Journal of Limnology Vol. 3 No. 2 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

In this study we present a first limnological characterization of Puah Reservoir (surface area of 69.79km2) since completion in 2014 and filling in 2015. The results obtained from seven sampling points shows the overall average values, standard deviation and range (min – max) of the physico-chemical parameters investigated in Puah Reservoir for twelve (12) months (Jan – Dec 2016) sampling. Puah Reservoir overall average surface water parameters recorded are water temperature (29.83 ± 1.78 ?C ; 24.10 – 33.70 ?C); dissolved oxygen (DO) (6.17 ± 0.95 mg/L ; 4.00 – 8.74 mg/L); chemical oxygen demand (COD) (17.67 ± 8.18 mg/L ; 2.00 – 39.00 mg/L), biological oxygen demand (BOD) (2.41 ± 1.38 mg/L ; 0.30 – 6.90 mg/L), pH (6.73 ± 0.47 ; 5.79 – 8.51), total suspended solid (TSS) (3.62 ± 2.23 mg/L ; 1.10 – 16.50 mg/L); nitrate (NO3-) (0.01 ± 0.01 mg/L ; 0.00 – 0.04 mg/L), nitrite (NO2-) (1.14 ± 0.88 mg/L; 0.00 – 4.00 mg/L); phosphorus (PO4-) (0.48 ± 0.28 mg/L ; 0.18 – 1.40 mg/L) and ammonia-N (NH4-N) (0.19 ± 0.15 mg/L ; 0.00 – 0.70 mg/L). Calculation of Water Quality Index (WQI) based on six (6) parameters shows that sampling stations at Puah Reservoir are in Class II with an average of 87.58 (Class II). Based on WQI for Class II, it has been proposed suitable for recreational activities involving the body contact, drinking water resources with conventional treatment and suitable for sensitive aquatic species. In summary, thermal stratification in Puah Reservoir was identified within range of 2 – 5 meter vertical depth.

Growth Patterns and Reproduction of Hampala Barb (Hampala macrolepidota) in Jatigede Reservoir, West Java Indonesia Titin Herawati; Ayi Yustiatia; Atikah Nurhayatia
Indonesian Journal of Limnology Vol. 3 No. 2 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51264/inajl.v3i2.33

The indigenous species of the Cimanuk River that can adapt to the stagnant waters of the Jatigede Reservoir is the hampala barb, this fish grows and breeds well; has an ecological function as a predatory fish from the cyprinidae family, and its economic function is that it can be traded in the Jatigede Reservoir, but its growth pattern, condition and reproduction factors are not widely known. The riset was conducted for six months (September - December 2017, January - February 2018), the purpose of the research was to find the growth pattern, condition factors and reproductive characteristics of the hampala barb. Field survey research method, composite fish sampling from five research stations, data calculated using fisheries biology methods. The results showed that the growth was negative allometric. b value of male fish was 2.429; female fish was 2.717; good condition factor K value of male fish was 1.17 to 1.47 and female fish was 1.16 to 1.38. Reproduction is a partially spawn, starting to spawn in October.

Effect of Different pH on Embryogenesis and Hatching Rate of Srikandi Strain Tilapia Eggs (Oreochromis aureus X Oreochromis niloticus) in Incubator Moch Saad; Fuquh Rahmat Shaleh; Agung Pamuji Rahayu; Norma Aprilia Fanni
Indonesian Journal of Limnology Vol. 3 No. 2 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Tilapia (Oreochromis niloticus) is one of the freshwater fish species which is a leading commodity in the aquaculture sector. The use of an incubator in hatching fish eggs can produce seeds with relatively the same age, the environment is more controlled so it will be easier to manipulate environmental factors that can affect hatching eggs to produce seeds of superior quality. This study aims to determine the description of embryogenesis and hatching rate of Srikandi strain tilapia eggs hatched at different pH. The experimental design used was a completely randomized design (CRD). The treatment consisted of four treatments, namely A (pH 6), B (pH 7), C (pH 8) and D (pH 9) with four replications. Statistical analysis used ANOVA (Analysis of Variance) and to find out the difference between one treatment and another, Duncan's Multiple Range Test was performed. The results showed that different pH treatments had an effect on the embryogeensis of Srikandi tilapia and also had a very significant effect on the hatchability of Srikandi tilapia eggs. The average hatchability of Srikandi tilapia eggs was highest in treatment B (pH 7) of 87.5% although it was not significantly different from treatment C (pH 8) of 80%.

Magnetic Graphene Oxide Conjugated with Polyamidoamine Dendrimer (MGO-PAMAM) as Heavy Metal Adsorbent: Bibliometric Analysis using Google Scholar Indexed VOSViewer Brigitta Stacia Maharani; Asep Bayu Dani Nandiyanto
Indonesian Journal of Limnology Vol. 3 No. 2 (2022): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51264/inajl.v3i2.39

This study aims to analyses the scope of research related to magnetic graphene oxide conjugated with polyamidoamine dendrimer (MGO-PAMAM) material as an adsorbent for heavy metals using bibliometric evaluation and data mapping with VOSViewer software. MGO-PAMAM material research data was collected from the Google Scholar database with criteria in the form of MGO journals and keywords, dendrimers, polyamidoamine, PAMAM, synthesis, and adsorption in 2018–2023. Based on the search results, 175 relevant journal articles were found. The number of articles has fluctuated from 2018 to 2023. This is due to the COVID-19 pandemic that is happening globally. This study can provide information on the pattern of distribution of journal articles and the quality of research developments related to polyamidoamine dendrimer material as an adsorbent for heavy metals in the last 5 years. This bibliometric analysis is expected to help researchers recognize research trends related to polyamidoamine dendrimer materials as heavy metal adsorbents globally and recommend future research prospects.

A Preliminary Recorded of Fishes at Selected Headwater Streams Before Establishing of Royal Belum State Park, Perak Amir Shah Ruddn Md Sah; Mohd Zambri Mohd Akhir; M S Shahrul Anuar; Ahyauddin Ali
Indonesian Journal of Limnology Vol. 4 No. 1 (2023): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51264/inajl.v4i1.38

A total of 30 fish species from 14 families were recorded during the survey at selected headwater streams of Belum Forest Reserve of Temengor Reservoir between June to December 1998. Family Cyprinidae was the dominant family which contributed 46.7% followed by Channidae (10.7%) and Bagridae (6.7%). Out of 30 species, only four species such as Devario regina, Rasbora paviana, Osteochilus hasselti and Hampala macrolepidota were sampled from all sampling stations. One specimen of freshwater puffer fish, Poa leiurus, was recorded at Sungai Ta eng. Distance, water velocity, river depth, types of substrate and physio-chemical parameter played an important role in determining species composition, diversity, biomass and species distribution. As there are many headwater streams in Temengor Reservoir still unexplored, the fish species number at Temengor Reservoir assume higher than been recorded before.

Page 3 of 5 | Total Record : 49

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Ali Rahmat

Contact Email
alirahmat911@gmail.com

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+6282278231661

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inajl.mli2022@gmail.com

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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

Location
Kota bogor,

Jawa barat

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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