Hubungan antara Sedimen dengan Logam Berat dan Makrozoobentos di Sungai Siangker, Semarang

Siangker river is one of the sub-systems of the West Semarang drainage system that experiencing siltation. Waste from the factories is suspected to contain heavy metals (Pb) and (Cd). This study was conducted to understand concentration of Pb and Cd and the relationship between characteristics of the sediments containing heavy metals (Pb) and (Cd) as well as macrozoobenthos community. Sampling was done by random sampling. PCA (Principle Component Analysis) was used to determine proximity of the relationships between macrozoobenthos and the value of organic matter as well as sediment characteristics. Meanwhile, the differences in the station of each variable was tested using Kruskal-Wallis test. Pearson correlation was used to analyze the relationship between abundance variables, diversity, the levels of heavy metals and sediment characteristics in each station. The results showed that the levels of heavy metals (Pb) in the estuary and river Siangker were 1,10 to 1,64 mg / l, while concentration of (Cd) is 0,13 to 0,43 mg / l. Dust levels were closely positively correlated (p < 0,05) with the diversity and abundance of macrozoobenthos. Levels of heavy metals was significant (p < 0,05) for the diversity and abundance of macrozoobenthos