| dc.description.abstract | Wonorejo river estuary is a wide estuary in Surabaya. It becomes mangrove
conservation area. But, many land conversion from mangroves to ponds up to the dense
pollution on the river neighbour make water quality issues especially for DO in that
water. Based on this situation, the aim of this study is to find distribution of DO in
Wonorejo river estuary, to know that water quality standard based on the quality
standard criteria, and to know the effect of DO Wonorejo river estuary into estuarine
ecosystem. A hydrodynamic and water quality model with MIKE 21 Hydrodynamics and
ECO Lab module are used to examine distribution of water quality parameters in
Wonorejo river estuary in one month at dry season. Validation used DO measurement in
10 sites along Wonorejo estuary at same season. Then, analyze the impact into estuarine
ecosystem was used. DO concentration has interval 5,26 - 5,72 mg/L at high tide and
5,027 - 5,65 mg/L at low tide. After one month, DO in estuary has the highest
concentration 5,536 mg/L. Based on literature, this concentrations can make shrimps
growth bothered. But, this concentration is still not exceeding from quality standard for
marine biota in Environment Ministry Regulation Number 51/2004. Optimizing the role
of Local Government and mangrove rehabilitation according to procedures in the estuary
area. | en_US |
