Kualitas Air Pasca Pengerukan Alur Transportasi Batu Kapur di Sungai Donan Cilacap
Abstrak: River Donan has the
potential of international ship’s channel due to the availability of industry.
Unfortunately, the drift gill net operation was predicted causing river
shallowness and disturbing the limestone transportation channel. The aim of research
was to know the water quality based on physic, chemical, and biological aspects
at the north, central, and south area of dredging; and sediment texture,
benthos and plankton as proponent. Survey was done at all areas of dredging
from January to March 2008. Water samples were taken according to PPRI Number
82/2001 and the procedure of SNI. Data was analised as descriptive and
supported by Sorensen similarity index. The result showed that the
concentration of TDS, NH3, Mn and Fe was above levels considered as water
quality standard at all areas; even the concentration decreases. On the other
hand, increasing the concentration of H2S was only at the central area, whereas
the concentration of Pb, silty clay sediment texture, and domination of benthic
of Rhinoclavis asper and plankton of Lyngbya spirulinoides were at the central
and south areas (similarity index of this research was 95.14%; the research
before was 99.15%). The conclusion showed that the dredging did not change the
high concentration of TDS because it which was taken along tide was hampered by
the net. In addition, the concentration of Pb, silty clay sediment texture, and
the dominant benthic and plankton have the same tendencies at the central and
south areas.
Penulis: Mohammad Husein
Sastranegara, Sri Lestari
Kode Jurnal: jpbiologidd090068
