an increase in the chemical nutrients to be found in any particular ecosystem. Of particular concern to geographers as poor farming practices can introduce excessive nutrients to waterways, increasing the primary productivity of algal plants which suffocate other primary producers in the water. The increased decomposition activity then reduces the oxygen content of the water which can impact on oxygen reliant organisms such as fish.
Geography Dictionary & Glossary for Students \\ ITS Tutorial School (ITS) - Hong Kong.