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All Journal BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Tri Retnaningsih Soeprobowati
Department of Biology, Faculty of Sciences and Mathemathics, Universitas Diponegoro, Semarang 50275
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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THE MINIMUM NUMBER OF VALVES FOR DIATOMS IDENTIFICATION IN RAWAPENING LAKE, CENTRAL JAVA Tri Retnaningsih Soeprobowati; S. Djalal Tandjung; Sutikno Sutikno; Suwarno Hadisusanto; Peter Gell
BIOTROPIA Vol. 23 No. 2 (2016): BIOTROPIA Vol. 23 No. 2 December 2016
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4146.57 KB) | DOI: 10.11598/btb.2016.23.2.486

Abstract

Technical challenges in using diatoms for paleolimnological studies include the identification and enumeration of diatom valves. The minimum number of valves required for identification varies, ranging from 100 to 700 valves of the dominant species. This task can be very time-consuming, particularly when diatom valves are scarce. This study was conducted to determine the minimum number of valves needed for identification in diatom assemblages from Rawapening Lake, Central Java, Indonesia. Based on 314 samples collected from Rawapening Lake, diatom counting efficiency exceeded 0.85 when a minimum of 300 valves was counted. The number of diatom species identified remained stable after counting at least 300 valves. Therefore, the minimum number of diatom valves required to represent the assemblage for paleolimnological analysis is 300.
Co-Authors Peter Gell S. Djalal Tandjung Sutikno Sutikno Suwarno Hadisusanto