Articles | Volume 21, issue 2
https://doi.org/10.5194/bg-21-455-2024
https://doi.org/10.5194/bg-21-455-2024
Research article
 | 
24 Jan 2024
Research article |  | 24 Jan 2024

Tropical dry forest response to nutrient fertilization: a model validation and sensitivity analysis

Shuyue Li, Bonnie Waring, Jennifer Powers, and David Medvigy

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Cited articles

Alfaro, E. A., Alvarado, A., and Chaverri, A.: Cambios edáficos asociados a tres etapas sucesionales tropical seco en Guanacaste, Costa Rica, Agronom. Cost., 25, 7–19, 2001. 
Aoyagi, R., Kitayama, K., and Turner, B. L.: How do tropical tree species maintain high growth rates on low-phosphorus soils?, Plant Soil, 480, 1–26, https://doi.org/10.1007/s11104-022-05602-2, 2022. 
Báez, S. and Homeier, J.: Functional traits determine tree growth and ecosystem productivity of a tropical montane forest: Insights from a long-term nutrient manipulation experiment, Global Change Biol., 24, 399–409, https://doi.org/10.1111/gcb.13905, 2018. 
Batterman, S. A., Hedin, L. O., Van Breugel, M., Ransijn, J., Craven, D. J., and Hall, J. S.: Key role of symbiotic dinitrogen fixation in tropical forest secondary succession, Nature, 502, 224–227, https://doi.org/10.1038/nature12525, 2013. 
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Short summary
We used an ecosystem model to simulate primary production of a tropical forest subjected to 3 years of nutrient fertilization. Simulations parameterized such that relative allocation to fine roots increased with increasing soil phosphorus had leaf, wood, and fine root production consistent with observations. However, these simulations seemed to over-allocate to fine roots on multidecadal timescales, affecting aboveground biomass. Additional observations across timescales would benefit models.
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