Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America
- Autores
- Miranda, Alejandro; Lara, Antonio; Altamirano, Adison; Di Bella, Carlos Marcelo; González, Mauro Eduardo Javier; Julio Camarero, Jesus
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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.
Fil: Miranda, Alejandro. Universidad de La Frontera; Chile. Universidad de Chile; Chile. Universidad Austral de Chile; Chile
Fil: Lara, Antonio. Universidad Austral de Chile; Chile. Universidad de Chile; Chile
Fil: Altamirano, Adison. Universidad de La Frontera; Chile
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
Fil: González, Mauro Eduardo Javier. Universidad de Chile; Chile. Universidad Austral de Chile; Chile
Fil: Julio Camarero, Jesus. Instituto Pirenaico de Ecología; España - Materia
-
CHILE
CLIMATE CHANGE
NDVI
REMOTE SENSING
RESILIENCE
RESISTANCE - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/132504
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Forest browning trends in response to drought in a highly threatened mediterranean landscape of South AmericaMiranda, AlejandroLara, AntonioAltamirano, AdisonDi Bella, Carlos MarceloGonzález, Mauro Eduardo JavierJulio Camarero, JesusCHILECLIMATE CHANGENDVIREMOTE SENSINGRESILIENCERESISTANCEhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Deforestation 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.Fil: Miranda, Alejandro. Universidad de La Frontera; Chile. Universidad de Chile; Chile. Universidad Austral de Chile; ChileFil: Lara, Antonio. Universidad Austral de Chile; Chile. Universidad de Chile; ChileFil: Altamirano, Adison. Universidad de La Frontera; ChileFil: 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; ArgentinaFil: González, Mauro Eduardo Javier. Universidad de Chile; Chile. Universidad Austral de Chile; ChileFil: Julio Camarero, Jesus. Instituto Pirenaico de Ecología; EspañaElsevier Science2020-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/132504Miranda, 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; 1-101470-160XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2020.106401info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1470160X20303381info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:59:23Zoai:ri.conicet.gov.ar:11336/132504instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:59:23.74CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America |
title |
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America |
spellingShingle |
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America Miranda, Alejandro CHILE CLIMATE CHANGE NDVI REMOTE SENSING RESILIENCE RESISTANCE |
title_short |
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America |
title_full |
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America |
title_fullStr |
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America |
title_full_unstemmed |
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America |
title_sort |
Forest browning trends in response to drought in a highly threatened mediterranean landscape of South America |
dc.creator.none.fl_str_mv |
Miranda, Alejandro Lara, Antonio Altamirano, Adison Di Bella, Carlos Marcelo González, Mauro Eduardo Javier Julio Camarero, Jesus |
author |
Miranda, Alejandro |
author_facet |
Miranda, Alejandro Lara, Antonio Altamirano, Adison Di Bella, Carlos Marcelo González, Mauro Eduardo Javier Julio Camarero, Jesus |
author_role |
author |
author2 |
Lara, Antonio Altamirano, Adison Di Bella, Carlos Marcelo González, Mauro Eduardo Javier Julio Camarero, Jesus |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
CHILE CLIMATE CHANGE NDVI REMOTE SENSING RESILIENCE RESISTANCE |
topic |
CHILE CLIMATE CHANGE NDVI REMOTE SENSING RESILIENCE RESISTANCE |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/4.1 https://purl.org/becyt/ford/4 |
dc.description.none.fl_txt_mv |
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. Fil: Miranda, Alejandro. Universidad de La Frontera; Chile. Universidad de Chile; Chile. Universidad Austral de Chile; Chile Fil: Lara, Antonio. Universidad Austral de Chile; Chile. Universidad de Chile; Chile Fil: Altamirano, Adison. Universidad de La Frontera; Chile 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 Fil: González, Mauro Eduardo Javier. Universidad de Chile; Chile. Universidad Austral de Chile; Chile Fil: Julio Camarero, Jesus. Instituto Pirenaico de Ecología; España |
description |
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. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-08 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/132504 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 1470-160X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/132504 |
identifier_str_mv |
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 1470-160X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecolind.2020.106401 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1470160X20303381 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier Science |
publisher.none.fl_str_mv |
Elsevier Science |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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13.070432 |