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All Journal Jurnal Serambi Engineering International Review of Practical Innovation, Technology and Green Energy (IRPITAGE)
Eva Ayuzar
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Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Energy Engineering Environmental Science Social Sciences Other

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Pemodelan Status Trofik Danau Laut Tawar Aceh Tengah Saiful Adhar; Erlangga Erlangga; Rachmawati Rusydi; Mainisa Mainisa; Munawwar Khalil; Muliani Muliani; Eva Ayuzar; Muhammad Hatta
Jurnal Serambi Engineering Vol 7, No 2 (2022): April 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i2.4022

Abstract

The trophic status of Laut Tawar Lake was increasingly leading to an alarming level of degradation. Efforts to anticipate an increase in trophic status require scientific knowledge of the trophic phenomena of the waters empirically. This research examines the trophic status parameters to produce a model of the trophic status of Laut Tawar Lake. The proposed model was a modification of Carlson's Trophic State Index Method. Analysis of the relationship examined the interaction of water clarity (SD) with chlorophyll-a (Chl), Total Suspended Solid, and Total Dissolved Solids, and the interaction of chlorophyll-a with nutrient concentration (TP, TN). Data were analyzed descriptively quantitatively, correlation, and regression. The results showed that the waters of Laut Tawar Lake contain phosphate (TP) 34 µg/L, Total Nitrogen 687 µg/L, chlorophyll-a 10 µg/L, Total Suspended Solid 47 mg/L, Total Dissolved Solid 84 mg/L, and water clarity 4.0 m. The regression test showed that the abundance of phytoplankton (Chl) was affected by nutrient phosphate with the empirical model equation Chl = 0.565 TP – 9.161. Nitrogen nutrients did not partially affect the concentration of chlorophyll-a in the waters of Laut Tawar Lake. Water clarity is influenced by chlorophyll-a and TSS, where TDS has no effect partially. The empirical model obtained is Ln SD = 1.757 – 0.013 Chl – 0.008 TSS. Modification of Carlson's TSI by substituting the two equations obtained the equation TSIdlt = 13.46 + 8.08 ln TP + 0.04 TP + 0.04 TSS. This model simulation gives an estimation rate of 91.06%.
Analisa Limbah Fosfor Kegiatan Keramba Jaring Apung di Danau Laut Tawar Aceh Tengah Saiful Adhar; Rachmawati Rusydi; Mainisa Mainisa; Erlangga Erlangga; Munawwar Khalil; Eva Ayuzar
Jurnal Serambi Engineering Vol 6, No 3 (2021): Juli 2021
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v6i3.3051

Abstract

Floating net cage activities can cause  water quality to decrease. The feed remains and the metabolism of the fish  from these activities produces nitrogen and phosphorus .  The objective of this study  is to obtain the calculation model and the amount of phosphorus released into the waters of Laut Tawar Lake  as a result of floating  cage activities. The resulting  formula  was Pw = (F x [P]p) – ((It – Io) x [P]i), where their variables were given feed (F), phosphorus concentration of feed ([P]p), the final weight of fish (It), the initial weight of fish (Io), and phosphorus concentration in fishes ([P]i). It can be used to predict the increase in phosphorus waste based on the increase in floating net cage area. The weight of tilapia increases exponentially with the  day of cultivation in the equation Y = 12.70e0.02x and the goldfish followed the formula  Y = 2.28e0.03x. Phosphorus in tilapia varies  from 1.58% to 2.23% with an average of 1.97%. Goldfish contain  1.19 - 2.02% phosphorus, with an average of 1.52%. Goldfish  growth  was not optimal due to inadequate feeding,   so  without excessive feeding and did not generate  phosphorus waste. The cultivation of  tilapia releases  0.09 Kg P/m2 of phosphorus waste from floating cages .
EMPOWERMENT OF TAMBAK FARMERS GROUPS IN COMMUNITY ECONOMIC DEVELOPMENT IN THE VILLAGE PADANG SAKTI Khairawati; Wahyu Fuadi; Eva Ayuzar; Nurainun; Rahmaniar
International Review of Practical Innovation, Technology and Green Energy (IRPITAGE) Vol. 3 No. 3 (2023): November 2023 - February 2024
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/irpitage.v3i3.1294

Abstract

The problems faced by the pond farmer group partners are very complex, namely from the macro production aspect where the limitations of the shrimp cultivation technology applied are still very traditional, large areas of land but not yet properly utilized, expensive feed costs, lack of business capital, while at the micro level they are constrained by limitations in mastery. technology and shrimp cultivation process with the latest technology. The marketing management aspect is still traditional where the harvest is only sold in local markets and also to agents who buy directly from farms so that their sales turnover is not too large. Aspects of Business Management where the harvest results are not utilized properly in empowering the community's economy. The aim of implementing environmentally assisted village service activities in Padang Sakti Village, Muara Satu District is to find solutions to the problems faced by partners in empowering and developing the economy of the pond farmer group community. The approach method that will be used in providing solutions to problems faced by partners by providing knowledge is by providing training/counseling and mentoring with the use and application of good and correct shrimp farming management cultivation technology, correct marketing management by utilizing information technology to carry out online promotions so that harvest results can be distributed properly as well as providing training on processing pond products to make healthy food at economical prices which can empower the community's economic income. Based on the implementation of community service programs in environmentally assisted villages that have been implemented smoothly, the Meuhasae farmer group, Padang Sakti Village, Muara Satu District, is very enthusiastic in participating in training, mentoring and playing an active role in asking discussion questions or sharing knowledge with the material provided both in terms of management. aquaculture and from a marketing perspective. It is hoped that the results from the shrimp farming sector will improve and the harvest results will be able to help partners in increasing the income of the Partner group.
Co-Authors Erlangga Erlangga Khairawati Mainisa Mainisa Muhammad Hatta Muliani Muliani Munawwar Khalil, Munawwar Nurainun Rachmawati Rusydi Rahmaniar Saiful Adhar Wahyu Fuadi