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Sulfur transformations and pool sizes in tropical forest soils

, : Sulfur transformations and pool sizes in tropical forest soils. Soil Biology & Biochemistry 23(11): 1053-1058

Samples of A horizon soils collected along an elevational gradient within the luquillo Experimental Forest in Puerto Rico, were examined for their capacity to adsorb sulfate, form organic S, and mobilize organic S that had been recently formed. Soil moisture, carbon, pH, and S pool sizes were assayed to determine factors regulating these processes. Samples were found to adsorb between 1.6 and 5.7 nmol S g-1dry wt of added sulfate, while organic S formation potentials ranged from 0.7 to 3.6 nmol S g-1 dry wt. All soils within the gradient exhibited the capacity to mobilize organic S (between 27.3 and 56.9% 24 h-1) as well as the capacity to accumulate organically bound S (0.7-1.8 nmol S g-1 24 h-1). Total S ranged from 1231 to 353 .mu.g S g-1 dry wt and organic S was the most abundant constituent. Carbon and moisture content were positively correlated with organic S formation potentials (r = 0.71; P .ltoreq. 0.001; r = 0.80; P .ltoreq. 0.001; respectively), while total amounts of sulfate were positively correlated with organic S mobilization rates (r = 0.85; P .ltoreq. 0.004).


DOI: 10.1016/0038-0717(91)90043-j

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Mehrabian, S.; Morgan, D.; Schlaeper, C.; Kortas, C.; Lindsay, R.M., 2003: Equipment and water treatment considerations for the provision of quotidian home hemodialysis. Whereas clinical benefits of more frequent hemodialysis (HD) treatment are well documented, little information is available about technical aspects involved in setting up a patient's home for home HD. Technical considerations include the home...

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Chod J., 1984: Demonstration of the celery mosaic virus in the carrot cultivar nantes. Celergy mosaic virus was isolated from the carrot cultivar 'Nantes' of Moravian provenance. This virus was transmitted by mechanical inoculation to Daucus carota, Chenopodium quinoa, C. amaranticolor, C. murale, Ammi majus and Apium grav...

Brooks S.J., 1992: Land-access issues from the Federal perspective. U: ological Survey Bulletin. Pages 58-59. 1992.

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Olmo, H.P., 1942: Choice of parent as influencing seed germination in fruits. Observations on 37 crosses and self or open pollinations of grape vars. and of 10 cross, self, or open pollinations of peach vars. in several seasons indicated that certain vars. as [female] parents characteristically produced seeds with low % of...

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