Open AccessKEANEKARAGAMAN FORAMINIFERA BENTIK TELUK BALIKPAPAN, PROVINSI KALIMANTAN TIMUR
Author(s) -
Mastuti Widianingsih
Publication year - 2017
Publication title -
jurnal biologi udayana
Language(s) - English
Resource type - Journals
eISSN - 2599-2856
pISSN - 1410-5292
DOI - 10.24843/jbiounud.2017.vol21.i02.p02
Subject(s) - foraminifera , benthic zone , bay , abundance (ecology) , sampling (signal processing) , diversity index , salinity , species evenness , oceanography , geology , species diversity , environmental science , biology , geography , ecology , physics , species richness , detector , optics
Balikpapan Bay is one of locations of sampling sediments for the study of benthic foraminifera. The objective of this research was to determine the diversity of benthic foraminifera at different depths at Balikpapan Bay, East Kalimantan. Samples was selected at depth of 0-20 m, then divided into 4 depths, 0-5 m, 6-10 m, 11-15 m, and 16-20 m. A total of 1553 specimens were obtained from 66 species, 7 ordo, and 17 family. Asterorotalia trispinosa is a species with the highest of abundance, that followed by Rotalia sp.1, Rotalia sp.2, and Trichammina nana. The diversity index of each sampling point was different, 8 points have stable diversity, 11 moderate points, and 1 unstable point. This condition were influenced by depth, brightness, temperature, pH, turbidity, salinity, and DO at each sediment sampling point.