Vegetation influence on soil quality in a highly degraded tropical ...
Vegetation influence on soil quality in a highly degraded tropical ...
Vegetation influence on soil quality in a highly degraded tropical ...
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26 SOTOMAYOR-RAMÍREZ ET AL./TROPICAL SOILS<br />
Ramos-Santana, R., G. Martínez and R. Macchiavelli, 2001. Gramíneas y legum<strong>in</strong>osas<br />
como alternativa en la recuperación de suelos erodados del centro de Puerto Rico.<br />
Resumen en Segunda Reunión Naci<strong>on</strong>al sobre Sistemas Agro y Silvopastoriles.<br />
Universidad Autónoma de Chap<strong>in</strong>go, Villahermosa, México. 20 al 22 de junio de<br />
2001.<br />
Rice, C. W. and F. O. García, 1994. Biologically active pools of carb<strong>on</strong> and nitrogen <strong>in</strong><br />
tallgrass prairie <strong>soil</strong>. pp. 201-208. In J. W. Doran et al. (ed.). Def<strong>in</strong><strong>in</strong>g <strong>soil</strong> <strong>quality</strong><br />
for a susta<strong>in</strong>able envir<strong>on</strong>ment. SSSA Spec. Pub. No. 35. ASA, SSSA, Madis<strong>on</strong>, WI.<br />
SAS Institute, 1996. SAS user’s guide. Release 6.12. W<strong>in</strong>dows ver. 4.0.1212. SAS Inst.,<br />
Cary, NC.<br />
Schimel, J. P., L. E. Jacks<strong>on</strong> and M. K. Firest<strong>on</strong>e, 1989. Spatial and temporal effects <strong>on</strong><br />
plant-microbial competiti<strong>on</strong> for <strong>in</strong>organic nitrogen <strong>in</strong> a California annual grassland.<br />
Soil Biol. Biochem. 21:1059-1066.<br />
Snyder, A. V., R. Pietri-Oms, M. Miró and H. M. Lugo, 1993. Structural stability, pore<br />
size distributi<strong>on</strong>, and surface charge properties of clay <strong>soil</strong>s with vary<strong>in</strong>g m<strong>in</strong>eralogy<br />
and organic matter c<strong>on</strong>tent. J. Agric. Univ. P.R. 77:11-29.<br />
Sparl<strong>in</strong>g, G. P. and W. West, 1988. A direct extracti<strong>on</strong> method to estimate <strong>soil</strong> microbial<br />
C: calibrati<strong>on</strong> <strong>in</strong> situ us<strong>in</strong>g microbial respirati<strong>on</strong> and 14 C labeled cells. Soil Biol.<br />
Biochem. 20:337-343.<br />
Sparl<strong>in</strong>g, G. P., 1992. Ratio of microbial biomass carb<strong>on</strong> to <strong>soil</strong> organic carb<strong>on</strong> as a sensitive<br />
<strong>in</strong>dicator of changes <strong>in</strong> <strong>soil</strong> organic matter. Aust. J. Soil Res. 30:195-207.<br />
Sparl<strong>in</strong>g, G. P., C. W. Feltham, J. Reynolds, A. W. West and P. S<strong>in</strong>glet<strong>on</strong>, 1990. Estimati<strong>on</strong><br />
of <strong>soil</strong> microbial C by a fumigati<strong>on</strong>-extracti<strong>on</strong> method: Use <strong>on</strong> <strong>soil</strong>s of high organic<br />
matter c<strong>on</strong>tent, and a reassessment of the K EC-factor. Soil Biol. Biochem.<br />
22:300-307.<br />
Stanford, G. and S. J. Smith, 1972. Nitrogen m<strong>in</strong>eralizati<strong>on</strong> potentials of <strong>soil</strong>s. Soil Sci.<br />
Soc. Am. Proc. 36:465-472.<br />
Thomas G. W., 1982. Exchangeable cati<strong>on</strong>s. pp. 159-165. In A. L. Page et al. (ed.) Methods<br />
of <strong>soil</strong> analysis. Part 2. Sec<strong>on</strong>d editi<strong>on</strong>. Agr<strong>on</strong>. M<strong>on</strong>ogr. 9. ASA, SSSA, Madis<strong>on</strong>,<br />
WI.<br />
Turco, R. F., A. C. Kennedy and M. D. Jaws<strong>on</strong>, 1994. Microbial <strong>in</strong>dicators of <strong>soil</strong> <strong>quality</strong>.<br />
pp. 73-90. In J. W. Doran et al. (ed.). Def<strong>in</strong><strong>in</strong>g <strong>soil</strong> <strong>quality</strong> for a susta<strong>in</strong>able envir<strong>on</strong>ment.<br />
SSSA Spec. Pub. No. 35. ASA, SSSA, Madis<strong>on</strong>, WI.<br />
Vance, E. D., P. C. Brookes and D. S. Jenk<strong>in</strong>s<strong>on</strong>, 1987. An extracti<strong>on</strong> method for measur<strong>in</strong>g<br />
<strong>soil</strong> microbial biomass carb<strong>on</strong>. Soil Biol. Biochem. 19:703-707.<br />
Vitousek, P. M. and P. A. Mats<strong>on</strong>, 1988. Nitrogen transformati<strong>on</strong>s <strong>in</strong> a range of <strong>tropical</strong><br />
forest <strong>soil</strong>s. Soil Biol. Biochem. 20:361-367.<br />
World Resources Institute, 2000. World Resources 2000-2001: People and ecosystems:<br />
The fray<strong>in</strong>g web of life. Elsevier Science. Amsterdam.