Research Nitrogen Fixation in Blue Green Algae

[screwball]

Does anyone know where I could find some research on the rate at which nitrogen fixation occurs in blue green algae?
Im looking for some sort of formula to calculate the amount of fixed nitrogen produced by a certain amount of blue green algae. Hopeing someone has seen something somewhere on this, I've had no luck finding anything.

 

[iansmith]

have you do research on pubmed/medline (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi) you migth find some paper.

 

[screwball]

i couldn't find anything there. its not a medical topic.

any other suggestions?

 

[LURCH]

The problem would seem to be that rates of Nitrogen fixation very quite broadly. This site mentions some of the limiting factors. Among these are availability of Fe, Mo, sunlight, etc. The rates are higher in fresh water than in salt water, appearently because of the presence of the sulfate ion SO₄⁼.

SO₄⁼ may inhibit fixation rates by 1-5% in fresh water, 15-20% in seawater, and 70% in highly saline waters.