Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal JURNAL BIOLOGI INDONESIA LIMNOTEK - Perairan Darat Tropis di Indonesia OLDI (Oseanologi dan Limnologi di Indonesia) LIMNOTEK
Sulung Nomosatryo
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Engineering Environmental Science

Published : 6 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : limnotek

 1 
The impact of weather Condition Changes on Vertical Distribution of Sulfides in Lake Maninjau Based on Observation Data Putri, Mutiara Rachmat; Jasalesmana, Taofik; Abdurrachman, Mirzam; Henny, Cynthia; Nomosatryo, Sulung; Albani, Alif Shidqie
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 1 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.2203

Abstract

Sulfide is a crucial parameter in volcanic lakes, as its levels and fluctuations in the lake determine the origin of sulfide and the extent of its impact on the lake ecosystem. In stratified lakes, the sulfide produced tends to be retained beneath the oxic layer. The sulfides rise towards the surface as the oxic layer thins triggered by decreased water column thermal stratification. Meanwhile, the strength or weakness of thermal stratification is greatly influenced by weather conditions. Lake Maninjau is a volcanic lake with a relatively high sulfide content. Its vertical distribution in the water column is highly dependent on the stratification of the water column. When stratification disappears, sulfide rises to the surface (locally known as tubo belerang) and has a negative impact on surface biota. The objective of this study is to examine the distribution of sulfides in the water column of Lake Maninjau under two different weather conditions. We perform two surveys to measure physicochemical parameters and sulfide concentration on 26‒29 November 2022 and 25‒26 August 2023 considering the seasonal pattern. We found that air temperatures and sunshine duration combined with precipitation and wind speed drive the thermal stratification of the water column. The lower air temperature, shorter sunshine duration, higher precipitation, and stronger wind speed in the first survey (west monsoon) compared with the second survey (east monsoon) resulted in lower stratification and triggered the elevated sulfide to the surface. In the middle of the lake, the surface sulfide measured during the first survey was 4.16 µg/L. Meanwhile, in the second survey, it was only observed at 1.16 µg/L. The distribution of sulfides within the water column of Lake Maninjau is regulated by the stratification of the water column, a process directly impacted by weather conditions.
KARAKTERISTIK DANAU ASAL VULKANIK STUDI KASUS: DANAU TOLIRE, PULAU TERNATE Fajar Setiawan; Hendro Wibowo; Arianto Budi Santoso; Sulung Nomosatryo; Ivana Yuniarti
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 21 No. 2 (2014)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2014.13279

Abstract

Ternate merupakan sebuah pulau vulkanik di Maluku Utara, didalamnya terdapat gunung api aktif (G. Gamalama) berketinggian 1.715 m dpl. Di pulau ini terdapat tiga danau (Tolire Besar, Ngade dan Tolire Kecil) yang berdasarkan proses terbentuknya digolongkan sebagai danau vulkanik dengan type Maar. Pengukuran yang dilakukan di Danau Tolire Besar pada tahun 2011 menghasilkan informasi kondisi fisik danau dan daerah tangkapannya. Danau Tolire dikelilingi oleh tebing curam setinggi 60-80 m, tidak mempunyai outlet dan inlet hanya berupa alur air dari puncak Gunung. Luas DTA danau adalah 244,2 Ha dengan tanah ber-ordo Inceptisols dan Ultisols, dengan Iklim termasuk tipe iklim B (Basah). Kedalaman maksimum danau 43,1 m, diameter 600 m, luas badan air 26,5 Ha, kecerahan danau hanya 4 m, salinitas, DO serta profil pH dan ORP mempunyai pola yang hampir sama, yang mengindikasikan bahwa pada kedalaman antara 8 dan 9 m adalah lapisan chemocline atau oxycline. Lapisan permukaan cenderung bersifat oksidatif dan lapisan dasar reduktif. Tidak dijumpai adanya stratifikasi lapisan danau oleh perbedaan suhu, dengan suhu permukaan 30°C. Daya dukung danau terhadap biota ikan sangat rendah, karena faktor tingginya kandungan sulfida dan lingkungan yang terisolir.
Co-Authors Abdurrachman, Mirzam Albani, Alif Shidqie Arianto Budi Santoso Budi Santoso, Arianto Cynthia Henny, Cynthia eko harsono Fajar Setiawan FAJAR SETIAWAN Hendro Wibowo Hendro Wibowo Ivana Yuniarti Jasalesmana, Taofik Putri, Mutiara Rachmat Siti Aisyah Yuniarti, Ivana