Aquaculture Pollution : An Overview of Issues with a Focus on China, Vietnam, and the Philippines
Aquaculture is probably the fastest-growing animal production sector in the Asia Pacific region. Aquaculture is predicted to continue increasing production by optimizing and intensifying existing aquaculture practices, increasing the number and typ...
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| Format: | Report |
| Language: | English |
| Published: |
World Bank, Washington, DC
2018
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| Online Access: | http://documents.worldbank.org/curated/en/557811516773201244/Aquaculture-pollution-an-overview-of-issues-with-a-focus-on-China-Vietnam-and-the-Philippines http://hdl.handle.net/10986/29249 |
| Summary: | Aquaculture is probably the
fastest-growing animal production sector in the Asia Pacific
region. Aquaculture is predicted to continue increasing
production by optimizing and intensifying existing
aquaculture practices, increasing the number and type of
farms, and exploring other environments. High levels of
nutrients in effluent discharge to channels, rivers, or
lakes may cause eutrophication and affect fisheries
adversely, but in other cases, depending on dilution rates,
effluents may be a beneficial addition of nutrients which
boost natural productivity including fisheries. The
important fish farming waste components are nutrients
(dissolved and particulate) resulting from the metabolism of
fish food (including natural food in the case of filter
feeders such as mussels and clams), uneaten food,
pseudofeces (in the case of filter feeders), escapees of
farmed fish affecting the genetics of wild fisheries
species, and residues of disease or parasite treatment
chemicals. The environmental impact can be lessened by
improved location of farms, improved farm management, or by
physical and or biological treatment of the effluent. China
is the leading country in aquaculture production and Vietnam
and the Philippines are in the top 10. Aquaculture continues
to grow in China and Vietnam but is presently declining in
the Philippines because of reduction in seaweed production. |
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