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All Journal Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Grouper: Jurnal Ilmiah Perikanan
Norma Aprilia Fanni
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Immunology & microbiology Veterinary

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Trophic Status In Joto Reservoir, Lamongan Norma Aprilia Fanni; Fuquh Rahmat Shaleh
Jurnal Agroqua: Media Informasi Agronomi dan Budidaya Perairan Vol 19 No 2 (2021): Jurnal Agroqua
Publisher : University of Prof. Dr. Hazairin, SH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32663/ja.v19i2.2298

Abstract

Joto Reservoir is a reservoir in Lamongan Distric which is commonly used by local people for their daily activities. In addition, the reservoir water flow is also used for fishing and agricultural activities. In the management of a sustainable and sustainable waters, basic information about the level of fertility of the waters is needed for proper use. This study aims to determine the water quality and fertility status of the waters in the Joto Reservoir, Lamongan Distric. The data collection method used purposive random sampling at three stations, namely the inlet, middle, and outlet sections. Determination of water fertility status based on calculations using the Carlson Trophic State Index (TSI). Water sampling was carried out at intervals of once a month for 3 months from December 2020 to February 2021. The parameters observed included temperature, brightness, pH, salinity, dissolved oxygen (DO), nitrate, total phosphate, chlorophyll-a. The results showed that the fertility status of the Joto Reservoir waters in December 2020 - February 2021 based on the Carlson TSI was included in the category of hypereutrophic waters with a value of 74. It is recommended to carry out further research in different seasons to determine the status of water fertility in the dry season.
ANALISIS KUALITAS RUMPUT LAUT Gracilaria verrucosa DI TAMBAK KABUPATEN KARAWANG, JAWA BARAT Waluyo Waluyo; Aef Permadi; Norma Aprilia Fanni; Angky Soedrijanto
Grouper: Fisheries Scientific Journal Vol 10, No 1 (2019): Grouper : Jurnal Ilmiah Fakultas Perikanan Universitas Islam Lamongan
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.833 KB) | DOI: 10.30736/grouper.v10i1.50

Abstract

Rumput laut adalah salah satu komoditas perikanan yang perlu mendapatkan perhatian khusus terkait kualitas rumput laut untuk mendapatkan agar-agar berkualitas tinggi. Gracilaria verrucosa merupakan jenis rumput laut yang paling utama sebagai sumber penghasil agar (agarofit) yang sebagian besar dimanfaatkan baik dikonsumsi secara langsung maupun untuk kebutuhan industri. Penelitian ini bertujuan untuk mengetahui kualitas rumput laut yang meliputi kandungan rendeman agar, kadar air, kadar abu, serat kasar, Clean Anhydrous Weed (CAW), pengotor, viskositas, gel streght, derajat putih serta kadar sulfat rumput laut yang dibudidaya di tambak Kabupaten Karawang, Jawa Barat, dengan pendekatan analisis diskriptif berdasarkan hasil uji kimia di laboratorium. Penelitian ini dilakukan pada Bulan September 2017, dengan mengambil sample rumput laut dan kualitas air tambak sebanyak 15 stasiun secara acak. Berdasarkan hasil analisis kualitas agar-agar Gracilaria verrucosa di Kabupaten Karawang menunjukkan bahwa secara umum kualitas cukup baik. Kadar sulfat hanya mencapai 4.82% yang artinya bahwa zat pengotor dalam kandungan agar-agar relative rendah, yaitu di bawah 6%. Akan tetapi terdapat beberapa parameter yang kualitasnya cukup tinggi yaitu viskositas dan gel strenght. Viskositas agar mencapai 201.6 cps dan kekuatan gel strenght 356.76 g/cm2. 
Co-Authors Aef Permadi Angky Soedrijanto Fuquh Rahmat Shaleh Waluyo Waluyo