Abstract
A mathematical model is constructed with which stocking effects on a system that includes threshold densities for two competing species may be determined. The nullcline of the system changes its form with increase of stocking. The combination of the nullclines produces compli-cated phases. If stocking occurs for only one species, this species has a chance to eliminate the other depending on the initial conditions and stocking levels. The stocking is effective to control natural populations.
© The Japanese Society of Fisheries Science
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- Nippon Suisan Gakkaishi is an official journal of the Japanese Society of Fisheries Science written in Japanese only.
The society publishes an English journal, Fisheries Science, as well, which accepts submissions from non-members of the society over the world. Detailed information is available in http://jsfs.jp/en/journals/fisheries-science.
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