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Published online 2 June 2005
Published in Soil Sci Soc Am J 69:1016-1025 (2005)
DOI: 10.2136/sssaj2003.0093
© 2005 Soil Science Society of America
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Characterization of Soil Algal Bioavailable Phosphorus in the Minnesota River Basin

F. Fanga,e, P. L. Brezonikb,g,*, D. J. Mullac and L. K. Hatchd,f

a Water Resources Science Graduate Program, 500 Pillsbury Dr. SE, Univ. of Minnesota, Minneapolis, MN 55455
b Dep. of Civil Engineering, Univ. of Minnesota, Minneapolis, MN 55455
c Dep. of Soil, Water and Climate, Univ. of Minnesota, St. Paul, MN 55108
d Water Resources Center, Univ. of Minnesota, St. Paul, MN 55108
e Current address: Kieser & Associates–Environmental Science and Engineering, 536 E. Michigan Ave., Suite 300, Kalamazoo, MI 49007
f Current address: Minnehaha Creek Watershed District, Deephaven, MN 55391
g BES-565, National Science Foundation, Arlington, VA 22230



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  		Fig. 1. The Minnesota River Basin and the sampling sites.

 


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  		Fig. 2. Correlation between oxalate-extractable P (Oxalate-P) and oxalate-extractable Fe and Al (Oxalate-[Fe+Al]) for eight acidic soils of the Minnesota River Basin.

 


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  		Fig. 3. Correlation between chlorophyll a (chl a) response and P saturation index based on sorptivity (PSIs) (n = 23).

 


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  		Fig. 4. Correlation between P saturation index based on sorptivity (PSIs) and Bray P (n = 25).

 




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