IDENTIFIKASI FITOPLANKTON SPESIES HARMFULL ALGAE BLOOM (HAB) SAAT KONDISI PASANG DI PERAIRAN PESISIR BRONDONG, LAMONGAN, JAWA TIMUR
ABSTRACT: The objectives of
this study was to identify composition and community structure of phytoplankton
HAB during tide period in Brondong Coastal Waters, Lamongan, East Java. The
research was conducted in 7 April, 22 April and 6 May 2015. There were five
stations along Brondong coastal. Phytoplankton sampling was carried out in each
stations by using plankton net with vertical method. This study also was held to
correlate between abundance and community structure index of phytoplankton
found in studied areas with water quality by correlation analysis. Composition
of phytoplankton HAB was found namely Dinophyceae (Ceratium fusus, Ceratium
macroceros, Ceratium pulchellum, Dinophysis acuminata, Gonyaulax polygramma,
Gonyaulax triacantha, Noctiluca scintillans and Peridinium claudicans) and
Bacillariophyceae (Chaetoceros compressus, Chaetoceros laciniosus dan Nitzschia
closterium). The highest abundance was determined 16550 cell/L which was belong
to Nitzschia closterium. Deversity index was ranged from 0,58-1,44 while
similiarity indeks ranged from 0,66-0,89, and dominance index was 0,29-0,61.
The correlation analysis found that there were significant positive
relationship between abundance, diversity and similiarity index with seawater
temperature and DO.
Penulis: Arianto Choirun, Syarifah Hikmah Julinda Sari, Feni Iranawati
Kode Jurnal: jpperikanandd150181
