Diatoms and Water Quality of Telaga Warna Dieng, Java Indonesia

2nd International Conference on Tropical and Coastal Region Eco Development 2016

地球科学;生态环境科学

Soeprobowati, Tri Retnaningsih^1,2 ; Agung Suedy, Sri Widodo^1 ; Hadiyanto^2,3

Department Biology, Faculty Sciences and Mathematics, Diponegoro University, Semarang, Indonesia^1

School of Postgraduate Studies, Diponegoro University, Semarang, Indonesia^2

Department of Chemical Engineering, Diponegoro University, Semarang, Indonesia^3

关键词: diatoms;    eutrophic;    Sediment layers;    Telaga Warna Dieng;    Total nitrogen;    Total phosphorus;    Water quality parameters;    Water quality standard;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/55/1/012051/pdf
DOI  :  10.1088/1755-1315/55/1/012051

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Diatoms are popular name for Bacillariophyte, the microalgae with the specific characteristic of silicious cell walls that well preserved in the sediments. The different diatoms assemblage in the sediment layers indicate different environment at the time of the diatoms live and deposited. Telaga Warna is small lake in Dieng Plateau. Telaga means lake, Warna means colour. It is called Telaga Warna because previously have 4 colours i.e. red, white, blue, and yellow which was influenced by weather, time, and site of view. This study aims to analysis the diatoms communities and water quality of Telaga Warna Dieng, Java, Indonesia. Coring conducted at three different locations. Water sampling carried out on all three spots. Analysis of diatoms consist of three stages: digestion, preparation, and identification of diatoms. There were 59 diatoms species found in Telaga Warna Dieng that were belong to 9 groups diatoms of centric, arafid, eunotoid, birafid, monorafid, birafid, epitemid, nitzschioid, and surirelloid. Eunotia, Pinnularia, and Melosira were the dominant genus from Telaga Warna. The water quality parameters that exceeded Indonesia Water Quality Standard were pH (2.2 - 5.4), Pb, Cd, Cr, Cu. Based on the abundance of species Eunotia and Pinnularia in Telaga Warna Dieng indicates that water tends to be acidic. The dominance of Melosira indicates waters rich in nitrogen. Based on the total concentration of nitrogen and phosphorous, Telaga Warna was in an eutrophic - hipereutrophic conditions with total nitrogen concentration > 1.9 mg/L and total phosphorus concentration > 0.1 mg/L.