Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines

The growth/climate relationship of theoretically temperature-controlled high-elevation forests has been demonstrated to weaken over recent decades. This is likely due to new tree growth limiting factors, such as an increasing drought risk for ecosystem functioning and productivity across the Mediter...

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Autores: Galván Candela, Juan Diego, Büntgen, Ulf, Ginzler, Christian, Grudd, Hakan, Gutiérrez Merino, Emilia, Labuhn, Inga, Camarero Martínez, Jesús Julio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/124944
Acceso en línea:https://hdl.handle.net/2445/124944
Access Level:acceso abierto
Palabra clave:Canvi climàtic
Sequeres
Pins
Pirineus
Climatic change
Droughts
Pine
Pyrenees
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spelling Drought-induced weakening of growth-temperature associations in high-elevation Iberian pinesGalván Candela, Juan DiegoBüntgen, UlfGinzler, ChristianGrudd, HakanGutiérrez Merino, EmiliaLabuhn, IngaCamarero Martínez, Jesús JulioCanvi climàticSequeresPinsPirineusClimatic changeDroughtsPinePyreneesThe growth/climate relationship of theoretically temperature-controlled high-elevation forests has been demonstrated to weaken over recent decades. This is likely due to new tree growth limiting factors, such as an increasing drought risk for ecosystem functioning and productivity across the Mediterranean Basin. In addition, declining tree growth sensitivity to spring temperature may emerge in response to increasing drought stress. Here, we evaluate these ideas by assessing the growth/climate sensitivity of 1500 tree-ring width (TRW) and 102 maximum density (MXD) measurement series from 711 and 74 Pinus uncinata trees, respectively, sampled at 28 high-elevation forest sites across the Pyrenees and two relict populations of the Iberian System. Different dendroclimatological standardization and split period approaches were used to assess the high- to low-frequency behavior of 20th century tree growth in response to temperature means, precipitation totals and drought indices. Long-term variations in TRW track summer temperatures until about 1970 but diverge afterwards, whereas MXD captures the recent temperature increase in the low-frequency domain fairly well. On the other hand summer drought has increasingly driven TRW along the 20th century. Our results suggest fading temperature sensitivity of Iberian high-elevation P. uncinata forest growth, and reveal the importance of summer drought that is becoming the emergent limiting factor of tree ring width formation in many parts of the Mediterranean Basin.Elsevier B.V.2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/124944Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1016/j.gloplacha.2014.11.011Global and Planetary Change, 2015, vol. 124, p. 95-106https://doi.org/10.1016/j.gloplacha.2014.11.011(c) Elsevier B.V., 2015info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1249442026-05-27T06:46:51Z
dc.title.none.fl_str_mv Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines
title Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines
spellingShingle Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines
Galván Candela, Juan Diego
Canvi climàtic
Sequeres
Pins
Pirineus
Climatic change
Droughts
Pine
Pyrenees
title_short Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines
title_full Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines
title_fullStr Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines
title_full_unstemmed Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines
title_sort Drought-induced weakening of growth-temperature associations in high-elevation Iberian pines
dc.creator.none.fl_str_mv Galván Candela, Juan Diego
Büntgen, Ulf
Ginzler, Christian
Grudd, Hakan
Gutiérrez Merino, Emilia
Labuhn, Inga
Camarero Martínez, Jesús Julio
author Galván Candela, Juan Diego
author_facet Galván Candela, Juan Diego
Büntgen, Ulf
Ginzler, Christian
Grudd, Hakan
Gutiérrez Merino, Emilia
Labuhn, Inga
Camarero Martínez, Jesús Julio
author_role author
author2 Büntgen, Ulf
Ginzler, Christian
Grudd, Hakan
Gutiérrez Merino, Emilia
Labuhn, Inga
Camarero Martínez, Jesús Julio
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Canvi climàtic
Sequeres
Pins
Pirineus
Climatic change
Droughts
Pine
Pyrenees
topic Canvi climàtic
Sequeres
Pins
Pirineus
Climatic change
Droughts
Pine
Pyrenees
description The growth/climate relationship of theoretically temperature-controlled high-elevation forests has been demonstrated to weaken over recent decades. This is likely due to new tree growth limiting factors, such as an increasing drought risk for ecosystem functioning and productivity across the Mediterranean Basin. In addition, declining tree growth sensitivity to spring temperature may emerge in response to increasing drought stress. Here, we evaluate these ideas by assessing the growth/climate sensitivity of 1500 tree-ring width (TRW) and 102 maximum density (MXD) measurement series from 711 and 74 Pinus uncinata trees, respectively, sampled at 28 high-elevation forest sites across the Pyrenees and two relict populations of the Iberian System. Different dendroclimatological standardization and split period approaches were used to assess the high- to low-frequency behavior of 20th century tree growth in response to temperature means, precipitation totals and drought indices. Long-term variations in TRW track summer temperatures until about 1970 but diverge afterwards, whereas MXD captures the recent temperature increase in the low-frequency domain fairly well. On the other hand summer drought has increasingly driven TRW along the 20th century. Our results suggest fading temperature sensitivity of Iberian high-elevation P. uncinata forest growth, and reveal the importance of summer drought that is becoming the emergent limiting factor of tree ring width formation in many parts of the Mediterranean Basin.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/124944
url https://hdl.handle.net/2445/124944
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.gloplacha.2014.11.011
Global and Planetary Change, 2015, vol. 124, p. 95-106
https://doi.org/10.1016/j.gloplacha.2014.11.011
dc.rights.none.fl_str_mv (c) Elsevier B.V., 2015
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Elsevier B.V., 2015
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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