Excess nitrogen and phosphorous in any water leads to aprocess called eutrophication (enrichment). As these compounds are the principal materials in fertilizer, they act on plant life to produce prolific algae growth. The algae die causing algal blooms (clumps of rotting, floating, dead algae) which reduce the oxygen content of the water making an unhealthy or even lethal environment for fish and other desirable aquatic organisms. The environment created is suitable for undesirable species like sludge worms, sewage fungus and blood worms.
Along with other nutrients, excess nitrogen within the Chesapeake Bay causes algal blooms. These blooms severely depletes the quality of the water creating unsuitable living conditions for many organisms.
The primary effect of excess phosphorus in the aquatic environment is called eutrophication. Phosphorus is one of several nutrients needed for plant growth. Excess amounts of nutrients however leads to excess plant growth and as these, at times huge amounts of plants die, oxygen is taken out of the water by bacteria during the decomposition process that can lead to eutrophic conditions where the dissolved oxygen is too low to support aquatic organisms.
An aquatic ecosystem or nearby waterway causes rapid and overabundant growth of algae.
The greenhouse effect is the name for runaway plant growth because if nitrogen fixation.
A compost with a carbon to nitrogen ratio not in excess of 35 to 1 is the compost that has the most nutrients. Higher ratios make the compost's nitrogen inaccessible and unavailable. Yard wastes have high nitrogen and organic content and moderate calcium and phosphorus presences.
Algal Blooms Freshwater algal blooms are normally associated with phosphorus runoff, not nitrogen. Incidentally, the source has never been proven (though suspected) to be agricultural fertilizers in the case of either nitrogen or phosphorus. See the related link below.
excess nitrogen
It is a polluting effect that N and K fertilizers have on nutrients leaching into groundwater.Specifically, nitrogen and phosphorus fertilizers deplete soil fertility since they tend to be applied in excess while other equally important nutrients are ignored. Excess nutrients disrupt air, life, moisture and nutrient patterns in the soil. They end up leaching pollutants into the groundwater and also into area water bodies through their contributions to polluted surface run off.
Nitrogen has no effect on water although it can be dissolved. Nitrogen is not hazardous in itself, and in water is not dangerous. However as your body has no use for it when breathed, it can asphyxiate. But in water it has no effect on large biological organisms. High nitrogen content can cause algal blooms in surface areas of water. However, nitrogen can be processed into nitrates by bacteria which can kill fish. Excess nitrogen is removed by humans through urea.
Nitrogen gas is unnecessary. It is not using in the photosynthesis.
urea
growth