Jurnal Ilmiah Mahasiswa STKIP PGRI Sumbar

Nama / NPM Putra Jaya Silalahi / 13010050
Program Studi Pendidikan Biologi
Pembimbing I Dra. Nursyahra
Pembimbing II Abizar
Tahun 2018

Abstrak :

        lake Biru Perambahan Telawi district in Sawahlunto regenely is one of the lakes formed by ex-coal mining excavations by PT. AIC Jaya as for the ex-coal mining lake, it contains high levels of sulfur with a low pH. With the formation of holes in the area after coal mines that are filled with water when it rains or from springs for years, of course. plankton grouped into phytoplankton (vegetable plankton) and zooplankton (animal plankton). Phytoplankton only consists of algae which are microcopically shaped, all phytoplankton forever live in water as plankton. The purpose of this study was to determine the phytoplankton composition and phytoplankton genus based on the chemical physics factors of water found in the lake Biru Perambahan Telawi district in Sawahlunto regenely. This research was conducted in April 2018 in lake Biru Perambahan Telawi district in sawahlunto regenely. This research was conducted by descriptive survey method. Sampling was carried out at IV stations representing all lake areas and each station carried out III replications. sample identification was carried out in the biology laboratory of STKIP PGRI West Sumatera. From the results of the study found 15 genera consisting of 4 classes, 7 orders, 11 families. The highest density of phytoplankton found in the genus Zygnema is found at station IV, which is 37.43 individuals/liter of the lowest density found in the genus Cylindrocapsa at station I, which is 0.17 individuals/liter. the highest frequency is at station II as many as 11.02 and the lowest frequency is at station I as much as 6.31. the diversity index at station I is 1.3510, station II is 1.8522, station III is 1.3141, and station IV is 0.9494. the highest similarity index is at station II-IV is 81.8% while the lowest similarity index is found at station I-III is 55%. 

Keyword :

Phytoplankton and Asik River.

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