Oceanography (2+1)

Seasonal variation of phosphate

It is observed that phosphate is found in high values during winter and lowest during summer season due to phytoplankton growth. Phosphorous is present in sea only in inorganic form i.e. phosphate. About 50% of the total phosphorous in sea occurs in upper 60m of sea. Phosphorous are found in organisms in particulate and dissolved organic compounds and as phosphate forms phosphorous is utilized by plants and they are released in to the atmosphere during decomposition of the organic matter.

It is also found that

1. All utilization of phosphate takes place in upper 60m of Ocean.

2. That all downward transport of phosphorous is due to settling of organisms

3. That the upward transport of phosphorous is all due to eddy diffusion.

4.Phoslphorous availability have impaction primary production rates.