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The effects of precipitation regime on soil carbon pools on the Yucatan Peninsula

Published online by Cambridge University Press:  20 September 2013

Lilia L. Roa-Fuentes
Affiliation:
Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
Claudia Hidalgo
Affiliation:
Colegio de Postgraduados, Montecillo, Mexico
Jorge D. Etchevers
Affiliation:
Colegio de Postgraduados, Montecillo, Mexico
Julio Campo*
Affiliation:
Instituto de Ecología, Universidad Nacional Autónoma de México, Mexico City, Mexico
*
1Corresponding author. Email: jcampo@ecologia.unam.mx

Abstract:

The effects of precipitation regime on the size of soil carbon (C) pools were compared in mature tropical dry forests of the Yucatan Peninsula. Our study included three forest stands in each, a dry site (potential evapotranspiration ratio = 3.2 mm mm−1; mean annual precipitation = 537 mm), a wetter site (2.0 mm mm−1; 993 mm) and a site in which water was comparatively less limiting (1.3 mm mm−1; 1086 mm). At each site, soil C pools in dead fallen phytomass (includes leaves, flowers, fruits, small twigs and deadwood debris) deposited on the litter layer and in roots and organic matter of the mineral soil (from the upper 10 cm) were measured in samples collected during the dry season. A high proportion of the total C pool (93–95%) was in the top 10 cm of soil in all forest sites. The smallest C pool was in roots (1.8–2.4% of the total C), meanwhile the C in the litter layer represented 3–5% of the total pool. These patterns were observed irrespective of study site. However, distribution of C (i.e. wood debris vs. fine litter) varied across sites; the proportion of the forest-floor C pool in wood debris decreased from 80% in the driest site, to 51% and 42% in 993-mm and 1086-mm sites, respectively. Overall, we observed that three pools (wood debris, roots and soil organic C) provide evidence for the significant decrease in soil C storage with increase in mean annual precipitation in Yucatan Peninsula. A potential explanation for this unexpected pattern includes an increasing C turnover time with decreasing mean annual precipitation, resulting in higher C accumulation per unit of C input in the driest site.

Type
Short Communication
Copyright
Copyright © Cambridge University Press 2013 

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References

LITERATURE CITED

COX, P. M., BETTS, R. A., JONES, C. D., SPALL, S. A. & TOTTERDELL, I. J. 2000. Acceleration of global warming due to carbon-cycle feedbacks in a coupled climate model. Nature 408:184187.CrossRefGoogle Scholar
DE DEYN, G. B., CORNELISSEN, J. H. C. & RICHARD, D. 2008. Plant functional traits and soil carbon sequestration in contrasting biomes. Ecology Letters 11:516531.CrossRefGoogle ScholarPubMed
HOLDRIDGE, L. R., GRENKE, W. C., HATHEWAY, W. H., LIANG, T. & TOSI, J. A. 1971. Forest environments in tropical life zones: a pilot study. Pergamon Press, New York. 747 pp.Google Scholar
JENKINSON, D. S., ADAMS, D. E. & WILD, A. 1991. Model estimates of CO2 emissions from soil in response to global warming. Nature 351:304306.CrossRefGoogle Scholar
KAUFFMAN, J. B., SANFORD, R. L., CUMMINGS, D. L., SAMPAIO, E. V. & SALCEDO, I. H. 1993. Biomass and nutrient dynamics associated with slash fires in Neotropical dry forest. Ecology 74:140151.CrossRefGoogle Scholar
MILES, L., NEWTON, A., DEFRIES, R., RAVILIOUS, C., MAYL, I., BLYTH, S., KAPOS, V. & GORDON, J. E. 2006. A global overview of the conservation status of tropical dry forests. Journal of Biogeography 3:491505.CrossRefGoogle Scholar
PAN, Y., BIRDSEY, R. A., FANG, J., HOUGHTON, R., KAUPPI, P. E., KURZ, W. A., PHILLIPS, O. L., SHVIDENKO, A., LEWIS, S. L., CANADELL, J. G., CIAIS, P. C., JACKSON, R. B., PACALA, S., MCGUIRE, A. D., PIAO, S., RAUTIAINEN, A., SITCH, S. & HAYES, D. 2011. A large and persistent carbon sink in the world's forests. Science 333:988993.CrossRefGoogle ScholarPubMed
POSADAS, J. M. & SCHUUR, E. A. G. 2011. Relationships among precipitation regime, nutrient availability, and carbon turnover in tropical rain forests. Oecologia 165:783795.CrossRefGoogle Scholar
POWERS, J. S., MONTGOMERY, R. A., ADAIR, E. C., BREARLEY, F. Q., DEWALT, S. J., CASTANHO, C. T., CHAVE, J., DEINERT, E., GANZHORN, J. U., GILBERT, M. E., GONZÁLEZ-ITURBE, J. A., BUNYAVEJCHEWIN, S., GRAU, H. R., HARMS, K. E., HIREMATH, A., IRIARTE-VIVAR, S., MANZANE, E., DE OLIVEIRA, A. A., POORTER, L., RAMANAMANJATO, J. B., SALK, C., VARELA, A., WEIBLEN, G. D. & LERDAU, M. T. 2009. Decomposition in tropical forests: a pan-tropical study of the effects of litter type, litter placement and mesofaunal exclusion across a precipitation gradient. Journal of Ecology 97:801811.CrossRefGoogle Scholar
ROA-FUENTES, L. L. 2013. Variación regional del capital de carbono y características funcionales del bosque tropical estacionalmente seco de Yucatán. PhD dissertation, Universidad Nacional Autónoma de México, Mexico. 67 pp.Google Scholar
ROA-FUENTES, L. L., CAMPO, J. & PARRA, V. 2012. Plant biomass allocation across a precipitation gradient: an approach to seasonally dry tropical forest at Yucatan, Mexico. Ecosystems 15:12341244.CrossRefGoogle Scholar
SHANG, C. & TIESSEN, H. 2003. Soil organic C sequestration and stabilization in karstic soils of Yucatan. Biogeochemistry 62:177196.CrossRefGoogle Scholar
SCHUUR, E. A. G., CHADWICK, O. A. & MATSON, P. A. 2001. Carbon cycling and soil C storage in mesic to wet precipitation gradient in Hawaiian montane forests. Ecology 82:31823196.CrossRefGoogle Scholar
VAN REEUWIJK, L. P. 2002. Procedures for soil analysis. International Soil Reference and Information Centre, Wageningen. 106 pp.Google Scholar