Fenomena Harmful Algal Blooms (HABs) di Pantai Ringgung Teluk Lampung, Pengaruhnya dengan Tingkat Kematian Ikan yang Dibudidayakan pada Karamba Jaring Apung
Abstract: ish mortality in the
Bay of Lampung not only wild fish, but also fish farmed in cages, especially
Ringgung Beach. One which caused by harmful algal abundance that occur was
increased input contaminants by both natural and anthropogenic sources. This
study aims to analyze the influence of harmful algal blooms (HABs) the amount
and frequency of fish mortality in cage Ringgung Lampung Bay. The study was
conducted at three research stations based KJA density. The results of the
study found 33 species of phytoplankton, 14 species have potential as HABs can
cause the death of fish. The highest abundance was kind Cochlodinium that reach
63.738 cells/liter. Phytoplankton diversity index value with the lowest value
occurred at station 3 on June 19, 2013 ie the date of 0705. The highest
phytoplankton diversity values occurred at Station 2 on June 12, 2013 is 2,451.
Uniformity values of phytoplankton in the waters of Beach Ringgung obtained in
the high category with a value above 0.5 or close to 1, which indicates that
the spread of the individual any kind of relatively evenly. Except at station 3
which has a relatively low value (0.228 on June 19, 2013, 0291 on June 26,
2013, and 0446 on July 3, 2013). Effect of HABs on the fishing mortality rate
is indicated by regression analysis. Correlation coefficient at station 1 shows
the value of 0.5208. While on station 2 shows 0.6937. Harmful algal blooms
shown to affect mortality rates of fish in floating net Ringgung Beach. They
have triggered reduced oxygen levels in the water that could potentially cause
the death of wild fish and farmed in floating net
Penulis: Ade Irawan, Qadar
Hasani, Herman Yuliyanto
Kode Jurnal: jppertaniandd150007
