HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Sharpley, A. N. Search for Related Content PubMed Articles by Sharpley, A. N. Agricola Articles by Sharpley, A. N.

Estimating Phosphorus in Agricultural Runoff Available to Several Algae Using Iron-Oxide Paper Strips

USDA-ARS, National Agric. Water Quality Lab., P.O. Box 1430, Durant, OK 74702-1430.

^* Corresponding author.

ABSTRACT

The transport of bioavailable P (BAP) in agricultural runoff can stimulate freshwater eutrophication. Previous research has shown that the amount of P removed by Fe-oxide impregnated paper strips (Fe-oxide strips) is related to the growth of Selenastrum capricornutum in laboratory incubations. As only one algal type was used, additional assays were conducted to determine if Fe-oxide strips can estimate the potential bioavailability of P in runoff to Anabaena, Ankistrodesmus, and Euglena, which are common in eutrophic waters of the Southern Plains. Algal growth was related (P > 0.001) to the amount of P extracted from runoff sediment by Fe-oxide strips. For a given strip P content of runoff sediment, algal cell count increased in the order Anabaena, Euglena, Selenastrum, and Ankistrodesmus. Thus, the amount of P removed from runoff by Fe-oxide strips, estimates the BAP content of runoff that may be potentially available for uptake by several common freshwater algae.

This article has been cited by other articles:

				L. R.F. Alleoni, S. R. Brinton, and G. A. O'Connor Runoff and Leachate Losses of Phosphorus in a Sandy Spodosol Amended with Biosolids J. Environ. Qual., January 4, 2008; 37(1): 259 - 265. [Abstract] [Full Text] [PDF]

				B. H. Anderson and F. R. Magdoff Autoclaving Soil Samples Affects Algal-Available Phosphorus J. Environ. Qual., October 12, 2005; 34(6): 1958 - 1963. [Abstract] [Full Text] [PDF]

				R. Uusitalo and P. Ekholm Phosphorus in Runoff Assessed by Anion Exchange Resin Extraction and an Algal Assay J. Environ. Qual., March 1, 2003; 32(2): 633 - 641. [Abstract] [Full Text] [PDF]