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All Journal Biocelebes
Umrah Umrah
Jurusan Biologi Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Tadulako Kampus Bumi Tadulako Tondo Palu, Sulawesi Tengah
Agriculture, Biological Sciences & Forestry

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PHYTOPLANKTON DIVERSITY IN THE WATERS OF LAKE SIBILI PALU CITY CENTRAL SULAWESI Miswan Miswan; Sicilia Intan Safitri Ranga; Muhammad Fajri Ramadhan Muslim Shaleh; Umrah Umrah
Biocelebes Vol. 16 No. 1 (2022)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/bioceb.v16i1.15895

Abstract

The study "Phytoplankton diversity in the waters of Lake Sibili, Palu City, Central Sulawesi" was conducted in September 2021. This study aims to determine phytoplankton diversity in Lake Sibili, Tawaeli District, Palu City, Central Sulawesi. This study uses a method (purposive random sampling). The identification results obtained ten phytoplankton species, namely Bacillaria sp., Schroedeia pointera, Zygnemopsis circumcarinatum, Spirogyra plorifica, Shroedeia anchora, Biddulphia sp., Actinastrum gracillimum, Nitzschia actinastroides, Pleurotaenium nageli, and Schaeroplea annulina. Phytoplankton diversity index from each observation station with a diversity index value (station I) 1,726, (station II) 1,801, (station III) 1,743, (station IV) 1,647 and (station V) 1,728. Based on this, the level of phytoplankton diversity in Lake Sibili, Tawaeli District, Palu City, Central Sulawesi is classified as medium.
PERBANDINGAN JUMLAH BAKTERI TANAH PADA HUTAN BERDAUN LEBAR DAN HUTAN BERDAUN JARUM PADA KEDALAMAN TANAH YANG BERBEDA Abi Gael Sidon; Wahyu Harso; Umrah Umrah; Orryani Lambui
Biocelebes Vol. 17 No. 1 (2023)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/bioceb.v17i1.16439

Abstract

The number of soil microorganisms that play a role in the organic matter decomposition process can be affected by litter quantity and quality. Lignin content is higher in needleleaf than in broadleaf. The study aimed to determine the number of bacteria found in the broadleaf forest and needleleaf forest soil at different soil depths. The soil was collected at depths of 0-5 cm, 10-15 cm, and 20-25 cm at a distance of 1.5 m from the canopy of both broadleaf and coniferous forests where their locations are close. The results showed that the soil organic matter of broadleaf forests was higher than needleleaf forests, especially at depths of 0-5 cm and 10-15 cm. The number of bacteria on broadleaf forest soil is higher than on needleleaf forest soil, especially at 0-5 cm depth. The organic matter in both forest soils decreases with the soil depth. A positive correlation is obtained between the quantity of organic matter and the number of bacteria. The quantity and quality of organic matter in the soil will affect the number of bacteria.
Co-Authors Abi Gael Sidon Miswan Miswan Muhammad Fajri Ramadhan Muslim Shaleh Orryani Lambui Sicilia Intan Safitri Ranga Wahyu Harso