VARIASI SPESIES DIATOM PADA TIPE PERAIRAN BERBEDA UNTUK KEPENTINGAN FORENSIK SEBAGAI PETUNJUK KEMATIAN AKIBAT TENGGELAM

Abstract

The purpose of this research was to determine diatom species in Unda River, Badung
River, Lake Beratan, estuarine and marine waters of Padang Galak, that can be used to indicate
death scene caused by drowning. Waters collected to 50 liters by using plankton net and carried
in a 25 ml glass bottle. The results of the research found that there were 60 species diatom from
26 genera, 23 families, 2 orders, and 1 class. Among the 60 species in this research, can be
indicate as 12 species are typical species of Unda River, 5 species are typical species of Badung
River, 1 species is typical of Lake Beratan, 9 species are typical of Padang Galak Estuary, and 19
species are typical to Padang Galak Sea. Among the typical species in every research site, there
are one species that has higher number: Fragilaria sp. 1 in Unda River, Gomphonema sp. 3 in
Badung River. Cymbella sp. 3 in Lake Beratan, Cyclotella sp., in Padang Galak Estuarine, and
Cocconeis sp. 2 in Padang Galak Sea.
Keywords: forensic, diatom, river, lake, sea