Conclusions

The entropy production of the three categories (total entropy production, dependent entropy production, and independent entropy production) can be proposed to be larger in a eutrophic lake than in an oligotrophic lake. Natural processes tends to proceed with time from oligotrophy to eutrophy in most of present lake ecosystems surrounded by the environment full of organic matter; the entropy production of the three categories in a lake will increase with time accompanying the process of eutrophication (Aoki, 1989, 1990).

These entropy production indices can be useful tools for characterizing the trophic status of a water body; however, their ecological interpretation might need more investigation as they depend on the successional stage (Margalef, 1977; Reynolds, 1984) or on the "prevailing condition" the system is following.

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Getting Started With Solar

Getting Started With Solar

Do we really want the one thing that gives us its resources unconditionally to suffer even more than it is suffering now? Nature, is a part of our being from the earliest human days. We respect Nature and it gives us its bounty, but in the recent past greedy money hungry corporations have made us all so destructive, so wasteful.

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