MAKROAVERTEBRATA BENTOS SEBAGAI BIOINDIKATOR KUALITAS AIR SUNGAI NIMBAI MANOKWARI, PAPUA BARAT
ABSTRACT: Benthos
macroinvertebrates have been used as bioindicators to assess the waters quality
of the stream, but still are very rarely to applied in West Papua streams.
Benthos macroinvertebrates can describe the stream water quality so that very
well be used as bioindicators, due to each species has a different tolerance to
interference organic pollutants in waters. This study aimed to assess the water
quality of Nimbai stream using benthos macroinvertebrates tolerance level and
several water quality parameters. Data retrieval was conducted in JuneJuly and SeptemberOctober 2012 in seven stations (L1L7) from Nimbai
upstream to downstream that connected to Prafi river. The water
macroinvertebrates were taken using surber with mesh size 200 μm and then was
identified at the family level. At L5 station near the oil palm waste disposal
installations was contains oil and fat (<1-3 mg/l), which resulted in
dissolved oxygen (DO) and pH is lower than the other stations. Similarly the
value of H' is low (0.83), however, the value of C (0.79) was high that
dominated by Oligochaeta. Famili biotic index (FBI) value obtained showed that
water quality in the L1L4 stations was in good to excellent
condition, but the quality at L5 station is classified as very poor. As the
distance far away from the sources of pollution in the L5 station, water
quality tends to improve as shown in the L6 and L7 stations. The result
of this study shows the important benefits of benthos macroinvertebrates as
bioindicators for assessing the quality of stream waters, and can be described
aquatic environments disturbance to the benthos macroinvertebrates habitats in
Nimbai stream.
Penulis: Simon Petrus
Oktovianus Leatemia, Emmanuel Manangkalangi, Paskalina Theresia Lefaan, Hans
Fence Zkeus Peday, Luky Sembel
Kode Jurnal: jppertaniandd170466
