dc.creator | Quesada Román, Adolfo | |
dc.creator | Ballesteros Cánovas, Juan Antonio | |
dc.creator | Guillet, Sébastien | |
dc.creator | Madrigal González, Jaime | |
dc.creator | Stoffel, Markus | |
dc.date.accessioned | 2022-07-22T14:25:38Z | |
dc.date.accessioned | 2022-10-20T00:00:30Z | |
dc.date.available | 2022-07-22T14:25:38Z | |
dc.date.available | 2022-10-20T00:00:30Z | |
dc.date.created | 2022-07-22T14:25:38Z | |
dc.date.issued | 2020-06 | |
dc.identifier | https://www.sciencedirect.com/science/article/pii/S1125786520300424?via%3Dihub | |
dc.identifier | 1125-7865 | |
dc.identifier | https://hdl.handle.net/10669/87017 | |
dc.identifier | 10.1016/j.dendro.2020.125704 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4527438 | |
dc.description.abstract | Climate-vegetation relations in alpine systems play a pivotal role in regulating hydrology and have thus become
a research priority in a context of ongoing climate change. In this paper, we investigate how one of the most
dominant shrub species in alpine páramo ecosystems of Central America, Hypericum irazuense, responds to
changes in precipitation, temperature and El Niño-Southern Oscillation. To this end, we performed dendrochronological
and wood-anatomical analyses on H. irazuense to determine the limiting climatic factors
driving shrub growth, using a bootstrapped correlation and response function analysis. To validate our results
further, we also applied Structural Equation Models (SEM), an approach commonly used in ecology, so as to
check for climate-growth relations which consider the control of ENSO on growth through its influence on
various climatic parameters. Results support a relation between climate and annual growth of H. irazuense and
demonstrate that the latter is sensitive to precipitation and temperature during boreal winters. In addition, we
observe a statistically significant correlation between annual growth and La Niña events. The presence of annual
growth rings holds H. irazuense as one in only few neotropical species suited for dendrochronological studies.
Results of this study could thus contribute to an improved understanding of how changing climatic conditions
affect the fragile and threatened páramo ecosystem and the ensuing services it offers in the form of hydrology
regulation over the next decades. | |
dc.language | eng | |
dc.source | Dendrochronologia; Vol. 61: 2020 | |
dc.subject | Annual growth rings | |
dc.subject | Tropical dendrochronology | |
dc.subject | Wood anatomy | |
dc.subject | STRUCTURAL EQUATION MODEL | |
dc.subject | Southern oscillation index | |
dc.subject | CENTRAL AMERICA | |
dc.title | Neotropical Hypericum irazuense shrubs reveal recent ENSO variability in Costa Rican páramo | |
dc.type | artículo científico | |