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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 8 Documents
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Search results for , issue "vol. 28 no. 1 (2021)" : 8 Documents clear
Potensi Wolffia globosa dan Lemna perpusilla (Lemnaceae) sebagai Pakan Ikan Nila (Oreochromis niloticus) sutrisno - sutrisno; Tjandra Chrismadha; Novi Mayasari
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 28 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2021.13381

Abstract

The Potential of Wolffia globosa and Lemna perpusilla (Lemnaceae) as Nile Tilapia (Oreochromis niloticus) Feed. Efforts to find alternative feeds, particularly those of cheap and readily available natural feeds, are continuously being made to improve the efficiency of fish farming. This study was conducted to determine the effectiveness of using two types of aquatic plants from the Lemnaceae group, Wolffia globosa and Lemna perpusilla, as alternative feeds in the cultivation of Nile Tilapia (Oreochromis niloticus). The fish was reared in nine aquaria measuring 60 × 40 × 40 cm, with a closed water recirculation system placed in a greenhouse. The aquatic plants were provided ad libitum while commercial pellets as control and comparison were given at 3% of the body weight, each with three replications. Observations on fish growth rate and feed efficiency were carried out every two weeks for eight weeks. The result showed that the growth rate of fish fed with Wolffia and Lemna reached 6.27 ± 0.14% per day and 6.46 ± 0.18% per day, while that fed with pellet was 7.17 ± 0.22% per day. Although these growth rates are significantly lower than that of fish fed with pellets, it is sufficient to show the potential of these aquatic plants as alternative feeds that can be used to reduce feed costs. This study also showed the better efficiency of fresh Lemna biomass as fish feed than Wolffia.
Pengelolaan Sumber Daya Ikan Corencang (Cyclocheilichthys apogon) Berdasarkan Aspek Biologi Ikan dan Selektivitas Alat Tangkap Andri Warsa; Agus Arifin Sentosa; Lismining Pujiyani Astuti
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 28 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2021.13382

Abstract

Cyclocheilichthys apogon) yang merupakan ikan introduksi. Di beberapa badan air lainnya ikan ini merupakan ikan eknomis penting. Pengelolaan sumberdaya ikan dapat dilakukan dengan penetapan ukuran ikan yang dapat dieksploitasi. Ukuran layak tangkap ditetapkan berdasarkan aspek biologi dan ukuran ikan yang tertangkap ditentukan selektivitas alat tangkap. Tujuan penelitian ini adalah untuk untuk menganalisis aspek biologi dan selektivitas jaring insang sebagai dasar pegelolaan sumberdaya ikan corencang di Waduk Jatiluhur. Penelitian dilakukan pada bulan Februari-November 2017 dengan percobaan penangkapan menggunakan jaring insang dengan ukuran mata jaring ¾; 1,0; 1,5; 2,0 dan 2,5 inci. Ikan jantan dan betina yang tertangkap masing-masing berukuran 5,4-18,9 cm dan 4,3-19,8 cm dengan pola pertumbuhan alometrik positif. Lm untuk ikan betina yaitu 13 cm dan jantan 14 cm. Loo, K dan M untuk ikan jantan adalah 21 cm; 0,52 per tahun dan 0,7983 per tahun sedangkan untuk ikan betina adalah 21,0 cm; 1,53 per tahun dan 0,9900 per tahun. Panjang total ikan yang tertangkap dengan probalititas tertinggi untuk mata jaring ¾; 1,0; 1,5; dan 2 inci masing-masing adalah 7,2; 9,5; 14,3 dan 19,0 cm untuk ikan betina sedangkan untuk ikan jantan masing-masing adalah 7,0; 9,3; 14,0 dan 18,6 cm. Panjang total ikan yang boleh dieksploitasi dengan hasil optimal adalah > 14 cm dengan ukuran mata jaring ≥ 1,5 inci. Ukuran optimal tersebut lebih besar dari Lm dan nilai SPR > 40% menjamin pemanfaatan berkelanjutan serta memberikan nilai ekonomi tertinggi. Â
Pengaruh Rasio Pejantan yang Berbeda terhadap Kinerja Reproduksi Ikan Wader Cakul (Barbodes binotatus) Anis Zubaidah; Dony Prasetyo; Abdur Rofi' Arya Aditama; Hariyadi Hariyadi
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 28 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2021.13383

Abstract

The current supply of Spotted Barb (Barbodes binotatus) is still obtained from wild catches because the larval production process is still not mastered. One of the obstacles in the artificial hatchery is a large number of unfertilized eggs. This obstacle is probably due to the suboptimal parental ratios. The purpose of this study was to obtain the best male : female ratio that produced the highest reproductive rate of Spotted Barb (Barbodes binotatus). The study was conducted for 14 days at UPT PBAT Umbulan, Pasuruan, East Java. The method used was an experimental method with four treatments and three replications, namely P1 (2 males : 1 female), P2 (3 males : 1 female), P3 (4 males : 1 female), and P4 (5 males : 1 female). The adult fish selected were gonadally mature (at stage 4 gonadal maturity), weighing 5–10 g. These adults were then kept in an aquarium measuring 60 × 30 × 30 cm3 filled with water to a depth of 25 cm until ready to spawn. The results showed that different male ratios had a significant effect (P < 0.05) on the degrees of fertilization and hatching. However, they had no significant impact (P > 0.05) on the survival rate (SR) and fecundity. The best treatment in this study was P4 which resulted in the degree of fertilization of 95.8%, the degree of hatching of 94.1%, and the survival rate of 98.0%. The ratio of 5 males : 1 female was the optimal ratio in the spawning of Spotted Barb to produce the highest reproductive performance.
Perifiton Epilitik sebagai Bioindikator Kualitas Air Sungai Senggarang di Pulau Bintan, Kepulauan Riau Tewi Resiana; Tri Apriadi; Wahyu Muzammil
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 28 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2021.13384

Abstract

The Senggarang River is a tributary located in Senggarang, Bintan Island, Riau Islands Province. The river's water quality needs to be monitored considering that it is one of the water resources used by the Senggarang community in Tanjung Pinang City and its surroundings. This study aims to determine the water quality of the Senggarang River based on the structure of the epilithic periphyton community. The sampling location was determined based on the purposive sampling method. Samples were taken from six stations along the Senggarang River, namely Station 1 in the first upstream, Station 2 adjacent to residential areas, Station 3 in the second upstream, Station 4 at the confluence of the two streams, Station 5 in open land, and Station 6 downstream near the estuary. Epilithic periphyton obtained from this study consisted of 20 genera from 3 divisions, namely Bacillariophyta, Chlorophyta, and Charophyta. The highest periphyton density was 790 individuals/cm2 found at Station 1 (upstream), while the lowest was 638 individuals/cm2 in the part of the river that flows in open land (Station 5). Based on the periphyton community, the results of the ecological index assessment indicated low diversity, high uniformity, and no dominant individual. The saprobic index value indicated that the pollution of organic and inorganic materials in the Senggarang River is classified as very low or oligosaprobic.
Potensi Pendapatan dari Pengelolaan Air Resapan di Ruang Terbuka Hijau Kalijodo Daniel Mbare; Ignasius Sutapa; Hayati Hasibuan; Setyo Moersidik
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 28 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2021.13385

Abstract

The Kalijodo Green Open Space (GOS) which has a vegetated land area of 48%, does not meet the ideal criteria for a GOS, which should have a minimum vegetated land area of 80%. With this area, the water absorption capacity of the Kalijodo GOS is only 45% from what it should be 75%. The ability to absorb water can impact the potential income generated if the infiltration water in the Kalijodo GOS is managed properly. This study aims to determine the potential income generated if the management of infiltration water in the Kalijodo GOS is carried out by comparing the management of infiltration water in current conditions to the ideal conditions using comparative descriptive analysis methods. The results showed that the community served by the distribution of clean water from the infiltration water management process at the Kalijodo GOS in its current condition was 348 people (87 households). This number is less than the number of people served by the distribution of clean water from infiltration water management under ideal conditions, which is 580 people (145 households). The income generated from the management of infiltration water in the Kalijodo GOS in its current condition compared to the management of infiltration water in the ideal conditions shows a loss or shortfall of Rp45,518,400. Thus, the condition of the Kalijodo green space needs to be improved according to the ideal area of vegetated land to increase the ability to absorb water so that the number of people who get access to clean water and the income from the infiltration water management increase
Cover Volume 28 Nomor 1 Tahun 2021 Admin Limnotek
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 28 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2021.17293

Abstract

Cover Limnotek Vol. 28 No. 1 Tahun 2021
Dewan Redaksi dan Pengantar Volume 28 Nomor 1 Tahun 2021 Admin Limnotek
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 28 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2021.17294

Abstract

Dewan Redaksi Limnotek Vol. 28 No. 1 Tahun 2021
Daftar Isi Limnotek Volume 28 Nomor 1 Tahun 2021 Admin Limnotek
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 28 No. 1 (2021)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2021.17295

Abstract

Daftar Isi Limnotek Vol. 28 No. 1 Tahun 2021

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