doi: 10.7763/IJESD.2016.V7.751
Release of Nitrogen and Phosphorus from Aquaculture Farms to Selangor River, Malaysia
Malaysia (e-mail: kawasaki@unisel.edu.my1
,
M. R. M. Kushairi1 , ,
Fatimah Yusoff2 , ,
Ayato Kohzu3
- 1Universiti Selangor
- 2Universiti Putra Malaysia
- 3National Institute for Environmental
Abstract
The release of nitrogen and phosphorus fromaquaculture ponds to Selangor River, Malaysia was estimated.The concentrations of nitrogen and phosphorus in aquacultureponds were always higher than those in the river, their primarywater source, indicating that the aquaculture ponds are sourcesof nitrogen and phosphorus in Selangor River. From the carefulinterview with aquaculture managers, the frequency of waterexchange, the number of harvesting, and the amount of feedsadded, the total volume of water released to the Selangor Riverwas also obtained. The total amount of nitrogen and phosphorusadded to each aquaculture pond was estimated to be about 700kg N and 60 kg P per year, respectively. About 100-200 kg N and10-15 kg P were estimated to be released with the waste waterper pond per year, accounting for 20-30% of nitrogen andphosphorus in added feeds. It is important for us to preciselyestimate the fates of nutrients for the better management andsustainable development of aquaculture industries. Our datamay help to improve aquaculture management in future.
Keywords
- Rivers
- aquaculture
- nutrient release
- eutrophication
How to Cite
Malaysia (e-mail: kawasaki@unisel.edu.my, M. R. M. Kushairi, Norio Nagao, Fatimah Yusoff, Akio Imai, and Ayato Kohzu, "Release of Nitrogen and Phosphorus from Aquaculture Farms to Selangor River, Malaysia," International Journal of Environmental Science and Development, vol. 7, no. 2, pp. 113-116, 2016. https://doi.org/10.7763/IJESD.2016.V7.751
Copyright & License
Copyright © 2016 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).