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dc.contributor.author
Miranda, Alejandro
dc.contributor.author
Lara, Antonio
dc.contributor.author
Altamirano, Adison
dc.contributor.author
Di Bella, Carlos Marcelo
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dc.contributor.author
González, Mauro Eduardo Javier
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dc.contributor.author
Julio Camarero, Jesus
dc.date.available
2021-05-21T16:10:40Z
dc.date.issued
2020-08
dc.identifier.citation
Miranda, Alejandro; Lara, Antonio; Altamirano, Adison; Di Bella, Carlos Marcelo; González, Mauro Eduardo Javier; et al.; Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America; Elsevier Science; Ecological Indicators; 115; 8-2020; 1-10
dc.identifier.issn
1470-160X
dc.identifier.uri
http://hdl.handle.net/11336/132504
dc.description.abstract
Deforestation is widely studied throughout the world. However, a less evident issue is the effect of climate change and drought on remnants of native forests. The objective of this work was to understand the geographic variations in resistance to drought of the Mediterranean sclerophyllous forests of central Chile. These forests have been historically reduced and fragmented and in recent years were subjected to the most prolonged drought occurred between 2010 and 2017. Using data from the MODIS satellite sensor, temporal trends in the NDVI (Normalized Difference Vegetation Index) were quantified. We related these trends with different environmental variables to understand the effects of geographical variation and forest type as indicators of resistance to drought. We observed a significant direct effect of drought, attributable to the reduced precipitation in central Chile, and a significantly reduced NDVI in near one-third of the region forests (browning). However, NDVI and therefore forest productivity were more stable in some mesic sites such as ravine bottoms, but not on south-facing slopes. This suggests that under a regime of reduced precipitations, a greater available soil humidity would be a more important factor than the fact of receiving less solar radiation. Finally, the highest degree of browning was observed in semi-arid sclerophyllous forest dominated by species tolerant to drought. Our findings emphasize the need to consider topographic site conditions to adequately assess forest productivity and vulnerability where local wet conditions could provide drought refuges. This recent drought may be analogous to forecasted warmer and drier climate conditions with more frequent and severe droughts, so our results may serve as a general framework for climate-smart decisions in highly threatened forest restoration and conservation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
CHILE
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CLIMATE CHANGE
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NDVI
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REMOTE SENSING
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RESILIENCE
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RESISTANCE
dc.subject.classification
Agricultura
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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CIENCIAS AGRÍCOLAS
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dc.title
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-05-11T18:25:12Z
dc.journal.volume
115
dc.journal.pagination
1-10
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Miranda, Alejandro. Universidad de La Frontera; Chile. Universidad de Chile; Chile. Universidad Austral de Chile; Chile
dc.description.fil
Fil: Lara, Antonio. Universidad Austral de Chile; Chile. Universidad de Chile; Chile
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Fil: Altamirano, Adison. Universidad de La Frontera; Chile
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Fil: Di Bella, Carlos Marcelo. Instituto Nacional de Tecnología Agropecuaria. Centro de Investigación de Recursos Naturales. Instituto de Clima y Agua; Argentina. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario; Argentina
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Fil: González, Mauro Eduardo Javier. Universidad de Chile; Chile. Universidad Austral de Chile; Chile
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Fil: Julio Camarero, Jesus. Instituto Pirenaico de Ecología; España
dc.journal.title
Ecological Indicators
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ecolind.2020.106401
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1470160X20303381
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