Articles | Volume 20, issue 11
https://doi.org/10.5194/bg-20-2143-2023
https://doi.org/10.5194/bg-20-2143-2023
Research article
 | 
15 Jun 2023
Research article |  | 15 Jun 2023

Throughfall exclusion and fertilization effects on tropical dry forest tree plantations, a large-scale experiment

German Vargas Gutiérrez, Daniel Pérez-Aviles, Nanette Raczka, Damaris Pereira-Arias, Julián Tijerín-Triviño, L. David Pereira-Arias, David Medvigy, Bonnie G. Waring, Ember Morrisey, Edward Brzostek, and Jennifer S. Powers

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Cited articles

Aguirre-Gutiérrez, J., Malhi, Y., Lewis, S. L., Fauset, S., Adu-Bredu, S., Affum-Baffoe, K., Baker, T. R., Gvozdevaite, A., Hubau, W., Moore, S., Peprah, T., Ziemińska, K., Phillips, O. L., and Oliveras, I.: Long-term droughts may drive drier tropical forests towards increased functional, taxonomic and phylogenetic homogeneity, Nat. Commun., 11, 3346, https://doi.org/10.1038/s41467-020-16973-4, 2020. 
Ahmed, M. A., Sanaullah, M., Blagodatskaya, E., Mason-Jones, K., Jawad, H., Kuzyakov, Y., and Dippold, M. A.: Soil microorganisms exhibit enzymatic and priming response to root mucilage under drought, Soil Biol. Biochem., 116, 410–418, https://doi.org/10.1016/j.soilbio.2017.10.041, 2018. 
Allen, K., Dupuy, J. M., Gei, M. G., Hulshof, C., Medvigy, D., Pizano, C., Salgado-Negret, B., Smith, C. M., Trierweiler, A., Bloem, S. J. V., Waring, B. G., Xu, X., and Powers, J. S.: Will seasonally dry tropical forests be sensitive or resistant to future changes in rainfall regimes?, Environ. Res. Lett., 12, 023001, https://doi.org/10.1088/1748-9326/aa5968, 2017. 
Alvarez-Clare, S., Mack, M. C., and Brooks, M.: A direct test of nitrogen and phosphorus limitation to net primary productivity in a lowland tropical wet forest, Ecology, 94, 1540–1551, https://doi.org/10.1890/12-2128.1, 2013. 
Anderegg, L. D. L., Anderegg, W. R. L., and Berry, J. A.: Not all droughts are created equal: translating meteorological drought into woody plant mortality, Tree Physiol., 33, 672–683, https://doi.org/10.1093/treephys/tpt044, 2013. 
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Short summary
To study whether nutrient availability controls tropical dry forest responses to reductions in soil moisture, we established the first troughfall exclusion experiment in a tropical dry forest plantation system crossed with a fertilization scheme. We found that the effects of fertilization on net primary productivity are larger than the effects of a ~15 % reduction in soil moisture, although in many cases we observed an interaction between drought and nutrient additions, suggesting colimitation.
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