Nutrient Condition of Kampar Big River Estuary: Distribution of N and P Concentrations Drifted by Tidal Bore ”Bono”
Abstract: Due to accelerated
anthropogenic activity, a significant amount of pollutants has been directly or
indirectly discharged into coastal estuaries of Kampar. Nutrient pollution
along the river to the estuary that adversely affects coastal and estuary
ecosystem mainly originates from inland such as industrial effluent, household,
and agricultural waste as well as a naturally derived pollutant from
biogeochemical cycle, which is controlled by the propagation of undular bore
(Bono). The purpose of this study is to determine the environmental impact of
distribution of nutrients caused by the mechanism of Bono. This research
employed a purposive quantitative method, the concentration of dissolved
phosphate, nitrate, nitrite and ammonia was analyzed using a spectrophotometer,
tidal data retrieval was measured for 30 days’ near the estuarine area, while,
current flow was measured for 24 hours’ measurement. Phosphate concentrations
ranged from 0.02-0.1 mg.L-1, nitrate concentrations ranged from 0.76-5.73
mg.L-1, ammonia concentrations ranged from 0.2-0.41 mg.L-1, nitrate
concentrations ranged from 0.001-0.03 mg.L-1. The tidal type is mixed tide
prevailing semidiurnal with tidal range reach 4.2 m during spring tide
condition. At the time of Bono propagate, drastically enhance the surface
elevation and directly increase the drift of velocity with the flow direction
from estuary into the river upstream, that mechanism affects the nutrient
distribution in Kampar river.
Keywords: Bono, Fluid
dynamics, Nutrient distribution, Tidal bore, Water quality
Author: Ulung Jantama Wisha,
Lilik Maslukah
Journal Code: jpperikanangg170039
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