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All Journal Jurnal EBONI Indonesian Journal of Limnology
Siti Aisyah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science

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Isolasi dan Identifikasi Bakteri Pelarut Fosfat dari Rhizosfer Tanaman Aren (Arenga Pinnata (Wurb)Merr) syarwani Wani; Siti Aisyah; Hadija S; Nirawati N
Jurnal Eboni Vol 4 No 2 (2022): November
Publisher : Program Studi Kehutanan Universitas Muslim Maros

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46918/eboni.v4i2.1496

Abstract

Unsur hara fosfat kedua setelah nitrogen dan unsur hara makro yang penting bagi pertumbuhan serta perkembangan tanaman. Penelitian ini bertujuan untuk mengisolasi dan mengidentifikasi jumlah dan keragaman bakteri pelarut fosfat dari rhizosfer tanah tanaman aren, serta menguji kemampuannya dalam melarutkan fosfat. Penelitian ini adalah jenis penelitian deskriptif kualitatif. Analisis yang dilakukan menggunakan deskriptif meliputi karakteristik makroskopis dan mikroskopis serta uji indeks bakteri pelarut fosfat (BPF). Nilai indeks pelarutan fosfat diukur dengan membandingkan total diameter koloni dan zona bening holozon diameter koloni pada media Pikovskaya agar. Hasil penelitian ini menunjukkan jumlah bakteri pelarut fosfat tertinggi diperoleh pada lokasi 2 lapisan 1 dengan nilai 57,5 x 10-8 CFU/ml dan terendah diperoleh lokasi 2 lapisan 2 dengan nilai 40,5 x 10-8 CFU/ml. Hasil karakterisasi secara morfologi menunjukkan hasil yang cukup beragam. Sedangkan uji kemampuan melarutkan fosfat yang tertinggi ditemukan lokasi 2 lapisan 2 dengan nilai indeks 3,75. Dimana memiliki potensi yang cukup tinggi sehingga, dapat diperlukan pengujian lebih lanjut.
Physical-Chemical Characteristic and Trophic Status of Some Small Lakes in Ciliwung Watershed, West Java Indonesia Siti Aisyah; Sulastri Sulastri; Rahmi Dina; Mey Ristanti Widoretno
Indonesian Journal of Limnology Vol. 2 No. 2 (2021): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.854 KB) | DOI: 10.51264/inajl.v2i2.15

Abstract

Small lakes are important freshwater resources to support the quality of human life. However, small lakes in the watershed are becoming threatened ecosystems because of increasing land-use changes and anthropogenic activity. The study aimed to determine characteristic physical-chemical parameters and trophic status some small lake in Ciliwung Watershed to support the sustainable management of small lakes in the Ciliwung watershed in preventing eutrophication effects.  The data was collected in April and June 2021. Measurement and analysis of water quality parameters were conducted by insitu and Laboratory. Some parameters were not in accordance with the Government Regulation number 22/2021 for class II water quality criteria (WQC), including TSS (>50 mg.L-1)., TP (>0.03 mg.L-1), COD (>25 mg.L-1) and DO (<3 mg.L-1), especially for Lake Sunter and Lake Cincin.There are two groups of lakes based on water quality and trophic status. Lake Telaga Warna Lake Cikaret, and Lake Cilodong were classified as eutrophic while lake Sunter and Lake Cincin were classified as hypereutrophic lake Lake Telaga Warna, Lake Cikaret, and Lake Cilodong, located at the upper and middle watershed, are eutrophic, characterized by deeper bottom and higher Secchi depth. At the lower watershed, Lake Sunter and Lake Cincin are hypereutrophic characterized by higher nutrients (TN and TP), COD, temperature, conductivity, salinity, and TDS. The downstream area was a densely populated area that contributed high pollution from upstream and middle of Ciliwung watershed.
Co-Authors Hadija Mey Ristanti Widoretno Nirawati Nirawati Rahmi Dina Sulastri Sulastri syarwani Wani