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 Lyons, J. B. Articles by Amador, J. A. Search for Related Content PubMed Articles by Lyons, J. B. Articles by Amador, J. A. Agricola Articles by Lyons, J. B. Articles by Amador, J. A.

Spatial and Temporal Variability of Phosphorus Retention in a Riparian Forest Soil

210 B Woodward Hall, Univ. of Rhode Island, Kingston, RI 02881.

^* Corresponding author (jlyons{at}uriacc.uri.edu).

ABSTRACT

Riparian zones remove P from surface runoff and can act as filters of nonpoint source (NPS) P pollution for surface waters. Riparian forest soils were investigated in spring and fall for their capacity to retain PO^3–₄-P. Samples (300 on each date) were taken from a soil drainage catena from moderately well (MWD), somewhat poorly (SPD), and poorly drained (PD) soil in May and November of 1995 to examine spatial and temporal variability of P retention and its relationship to soil properties. The equilibrium P concentration at zero sorption (EPC₀) was determined for each sampling point (lower EPC₀, = higher P retention capacity). Mean (coefficient of variation, CV) EPC₀ values were 3.8 (0.49) mg P L^–1 in May and no P sorption was apparent in November for SPD soil, 1.0 (1.34) and 1.5 (1.03) P L^–1 in May and November, respectively for MWD soil, and 0.5 (1.87) and 1.3 (1.13) mg P L^–1, respectively for PD soil. The EPC₀ was significantly and positively correlated to organic matter (OM) for all drainage classes on both dates. Low EPC₀ values—high P retention capacity—in MWD and PD soil corresponded with high Fe_ox and Al_ox values. For SPD soil, high mean EPC₀ corresponded with low mean Fe_ox and Al_ox values. The relationship between EPC₀ and Fe_ox and Al_ox was described by a hyperbolic function for MWD and PD soil, but not for SPD soil. The EPC₀ did not exhibit spatial structure at the sampling scale used for any of the drainage classes, even though Fe_ox, Al_ox, and OM content showed spatial structure.

This article has been cited by other articles:

				M. J. Cohen, J. P. Prenger, and W. F. DeBusk Visible-Near Infrared Reflectance Spectroscopy for Rapid, Nondestructive Assessment of Wetland Soil Quality J. Environ. Qual., July 5, 2005; 34(4): 1422 - 1434. [Abstract] [Full Text] [PDF]

				R. Giesler, T. Andersson, L. Lovgren, and P. Persson Phosphate Sorption in Aluminum- and Iron-Rich Humus Soils Soil Sci. Soc. Am. J., January 1, 2005; 69(1): 77 - 86. [Abstract] [Full Text] [PDF]

				G. L. Bruland and C. J. Richardson Spatial Variability of Soil Properties in Created, Restored, and Paired Natural Wetlands Soil Sci. Soc. Am. J., January 1, 2005; 69(1): 273 - 284. [Abstract] [Full Text] [PDF]

				G. L. Bruland and C. J. Richardson A Spatially Explicit Investigation of Phosphorus Sorption and Related Soil Properties in Two Riparian Wetlands J. Environ. Qual., March 1, 2004; 33(2): 785 - 794. [Abstract] [Full Text] [PDF]

				R. P. Udawatta, J. J. Krstansky, G. S. Henderson, and H. E. Garrett Agroforestry Practices, Runoff, and Nutrient Loss: A Paired Watershed Comparison J. Environ. Qual., July 1, 2002; 31(4): 1214 - 1225. [Abstract] [Full Text] [PDF]

				S. D. Bridgham, C. A. Johnston, J. P. Schubauer-Berigan, and P. Weishampel Phosphorus Sorption Dynamics in Soils and Coupling with Surface and Pore Water in Riverine Wetlands Soil Sci. Soc. Am. J., March 1, 2001; 65(2): 577 - 588. [Abstract] [Full Text] [PDF]

				E. O. Young and D. S. Ross Phosphate Release from Seasonally Flooded Soils: A Laboratory Microcosm Study J. Environ. Qual., January 1, 2001; 30(1): 91 - 101. [Abstract] [Full Text]