Print Email Facebook Twitter Interception of Rainfall in Successional Tropical Dry Forests in Brazil and Costa Rica Title Interception of Rainfall in Successional Tropical Dry Forests in Brazil and Costa Rica Author Calvo-Alvarado, Julio Cesar (Instituto Tecnologico de Costa Rica) JIMENEZ RODRIGUEZ, C.D. (TU Delft Water Resources) Calvo-Obando, Ana Julieta (Instituto Tecnologico de Costa Rica) do Espírito-Santo, Mário Marcos (Universidade Estadual de Montes Claros) Gonçalves-Silva, Thiago (Universidade Estadual de Montes Claros) Date 2018-12-14 Abstract Tropical dry forests (TDF) are endangered ecosystems characterized by a matrix of successional forest patches with structural differences across the Neotropics. Until now, there have been few studies that analyze the partitioning of rainfall by forest interception in TDF. To contribute to the understanding of the TDF impact on the hydrological dynamic at the ecosystem and landscape levels, a rainfall interception study was conducted in Santa Rosa National Park in Costa Rica (SRNP) and in Mata Seca State Park in Brazil (MSSP). In each site, three plots per successional stage were studied. The successional stages were early, intermediate, and late. In each plot the rainfall, throughfall, and stemflow were monitored during one rainy season. The relationship between gross rainfall and water fluxes was evaluated using linear regression models. In general, net rainfall oscillated from 79.3% to 85.4% of gross rainfall in all the plots in MSSP without any trend related to forest succession, due to the effect of a high density of lianas in the intermediate and late stage plots. In SRNP, there was a clear trend of net rainfall among successional stages: 87.5% (early), 73.0% (intermediate), and 63.4% (late). Net rainfall correlated negatively only with plant area index in SRNP (r = −0.755, p < 0.05). This study highlights the need to study rainfall interception in successional stages to estimate net rainfall that reaches the soil. This would provide better hydrological information to understand water balance and water fluxes at the level of forest ecosystems and landscapes. To reference this document use: http://resolver.tudelft.nl/uuid:e9cea750-6b8f-4284-994a-660d10e1d2e1 DOI https://doi.org/10.3390/geosciences8120486 Source Geosciences (Switzerland), 8 (12), 1-13 Part of collection Institutional Repository Document type journal article Rights © 2018 Julio Cesar Calvo-Alvarado, C.D. JIMENEZ RODRIGUEZ, Ana Julieta Calvo-Obando, Mário Marcos do Espírito-Santo, Thiago Gonçalves-Silva Files PDF geosciences_08_00486.pdf 1.58 MB Close viewer /islandora/object/uuid:e9cea750-6b8f-4284-994a-660d10e1d2e1/datastream/OBJ/view