Studi Kualitas Perairan Danau Sentani Menggunakan Bioindikator Makrobentos

ABSTRACT: Study on  the  water quality of Sentani Lake has been carried out during October–November 2012 at 3 stations of observation.  Observation  and  retrieval  of  macrobenthos  have  been  done  by  using  combination  between  line transect method and square plot. While for physical and chemical characteristics of water is measured in   site and at laboratory. Index of variance Shannon-Wiener, Evenness and Density as well as Pollution Index were used to analyse  the  physical and chemical characteristics  of  water. Result of this  study showed that Telaga Maya area (station 3) has the highest variation of macrobenthos with H’ value= 2.12 while the lowest variation (H’= 1.66) was found  around  Ekspo  River  (station  2).  Based  on  population  density  of  macrobenthos,   Pilsbryoconcha exilis  which collected  in  the  area  of  Jembatan  Dua  River  (station  1)  was  found  as   the  highest  population  with  density  9.26 ind/m2,  while  the  lowest  population  density  was  Melanoides  tuberculata  with  density  0.93  ind/m2.  It  can  be concluded that based on  the  value of variance index and Pollution Index, the  water quality of Sentani Lake belong to low-medium polluted category.
Key words: water quality, macrobenthos, sentani lake and Jayapura
Penulis: PURWANTO, SURIANI BR. SURBAKTI, DAN ROSYE H.R. TANJUNG
Kode Jurnal: jpbiologidd130650

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