geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

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).

US$19.90

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


Other references

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...

Gonzalez, J.L., 1955: Womb-phantasy and death-instinct. Revista de Psicoanalisis 12(3): 385-388

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.

Pitsikas, N.; Brambilla, A.; Borsini, F., 1994: Effect of DAU 6215, a novel 5-HT-3 receptor antagonist, on scopolamine-induced amnesia in the rat in a spatial learning task. The effects of different doses (1, 10, 30, and 100 micrograms/kg, IP) of a new 5-hydroxytryptamine3 (5-HT3) receptor antagonist, 3-alpha-tropanyl)1H-benzimidazolone-3-carboxamide chloride (DAU 6215), on memory and performance deficits induced by S...

Marsden, P.D., 1976: Compendium of the symposium. The general conclusions reached during a valuable symposium on Trypanosoma cruzi are summarized and a programme for future research is presented.

Bal'-, V.; Mizhueva, S., 1975: Investigation into sarcoplasmatic proteins by the method of thin-layer chromatography. Izvestiia vysshikh uchebnykh zavedenii Pishchevaia tekhnologiia: 131-134

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...

Byun, T.McAllister.; Hitchcock, E.R., 2012: Investigating the use of traditional and spectral biofeedback approaches to intervention for /r/ misarticulation. Misarticulation of /r/ is among the most challenging developmental speech errors to remediate. Case studies suggest that visual biofeedback treatment can establish perceptually accurate /r/ in clients who have not responded to traditional treatmen...

Takagi A., 1990: Computer aided 3 d reconstruction of the inner ear and its measurement. The advantages of the computer-aided three-dimensional (3-D) reconstruction of the inner ear structures are as follows. 1) 3-D visualiation of the shapes of those structures from histologic sections, 2) ability to measure the fine structures of th...