Human Impact on the Phosphorus Cycle

Eutrophication is part of the natural what in lakes.

Eutrophication is part of the natural ALGAL GROWTH in lakes.

Young deep lakes are not as productive as older lakes with deposits of what from runoff available as nutrients.

Young deep lakes are not as productive as older lakes with deposits of MINERALS from runoff available as nutrients.

These what are cycled and the lake becomes increasingly eutrophic, providing nutrients for a wide range of what

These PHOSPHATES are cycled and the lake becomes increasingly eutrophic (means good food), providing nutrients for a wide range of ALGAL GROWTH

what wastes, fertilizer what, animal wastes and mining all contribute to an acceleration of what.

ORGANIC MATTER/WASTES, fertilizer RUN-OFF, animal wastes and mining all contribute to an acceleration of EUTROPHICATION.

Excessive nutrients (especially phosphorus) results in the what increase of photosynthetic organisms.

Excessive nutrients (especially phosphorus) results in the GRADUAL increase of photosynthetic organisms.

As the large amounts of algal die, the metabolic processes of decomposers uses up all the what available to other organisms

As the large amounts of algal die, the metabolic processes of decomposers uses up all the OXYGEN available to other organisms