HUBUNGAN ANTARA KELIMPAHAN KISTA DINOPHYCEAE DENGAN PARAMETER FISIKAKIMIA PERAIRAN DI TELUK JAKARTA
Abstract: Phytoplankton mainly
Dinofl agellata group on sexual reproductive phase will form a cyst when water
conditions worsened. Cyst that was in the column will settle to the bottom,
forming sediments that abundance is closely related to the events that occurred
at an earlier time. This study aims to examine the relationship between
abundance of Dinophyceae cysts with physico-chemical parameters of waters in
the Jakarta Bay. Research conducted in the Jakarta Bay in August 2009,
September 2009, November 2009, January 2010, March 2010 and May 2010 with the
number of the location of sediment sampling are 9 stations. Sediment sample
were taken using a corer which the pipe made of elliptical. Sample handling is
done by the separation between the sediments and cysts which is covering the
sifting process, then performed panning. The water samples that has been
separated by sediment stored in sample bottles and preserved by using formalin
4%, then identifi ed using a microscope. The results showed that the
physico-chemical parameters of waters were the temperature: 25,00-31,80oC,
salinity: 28.00 to 33.00, current: 9.81 to 30.51 cm.det-1, acidity : 6.58 to
8.63, brightness: 1.25 to 4.50 m, depth: 4.00 to 7.00 m, nitrates: 0.0072 to
0.0982 mg.l-1, and orthophosphate: 0, 0114 to 0.4076 mg.l-1. Dinophyceae cyst
abundance during the study ranged from 51-8081 kista.cm-3. Meanwhile, the
composition of the types of cysts Dinophyceae consists of 8 (eight) genus. The
results of Pearson’s correlation analysis showed that the current value of
Pearson’s correlation was 0.233 provides the most profound and positive
correlation to the presence of cysts Dinophyceae during the study.
Keywords: cyst Dinophyceae,
physico-chemical parameters, Jakarta Bay
Penulis: Yuliana
Kode Jurnal: jpperikanandd140565
