Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands

Understanding how the interactions between solar UV radiation and climate will affect leaf litter decomposition is fundamental to predict how soil and ecosystem biogeochemical cycles will respond to ongoing climate change. We carried out a manipulative experiment to investigate how UV radiation and...

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Detalles Bibliográficos
Autores: Almagro, María, Maestre, Fernando, Martínez-López, Javier, Valencia Gómez, Enrique, Rey Muñoz, Ana Isabel
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/93268
Acceso en línea:https://hdl.handle.net/20.500.14352/93268
Access Level:acceso abierto
Palabra clave:631.4
574
551.588.7
Leaf litter decomposition
Alpha grass steppe
Climate change manipulation experiments
Photodegradation
Drylands
Ecología (Biología)
Edafología (Biología)
2511 Ciencias del Suelo (Edafología)
2417.13 Ecología Vegetal
2502 Climatología
id ES_ca6b000dbb4e8f86261c33bdd954815e
oai_identifier_str oai:docta.ucm.es:20.500.14352/93268
network_acronym_str ES
network_name_str España
repository_id_str
spelling Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslandsAlmagro, MaríaMaestre, FernandoMartínez-López, JavierValencia Gómez, EnriqueRey Muñoz, Ana Isabel631.4574551.588.7Leaf litter decompositionAlpha grass steppeClimate change manipulation experimentsPhotodegradationDrylandsEcología (Biología)Edafología (Biología)2511 Ciencias del Suelo (Edafología)2417.13 Ecología Vegetal2502 ClimatologíaUnderstanding how the interactions between solar UV radiation and climate will affect leaf litter decomposition is fundamental to predict how soil and ecosystem biogeochemical cycles will respond to ongoing climate change. We carried out a manipulative experiment to investigate how UV radiation and its interaction with increased temperature (3 C on average) and a ~35% reduction in precipitation affect the decomposition of “standing” and “on the ground” litter of Stipa tenacissima, a dominant species in semiarid Mediterranean grasslands. UV radiation was manipulated using specially designed screens that either passed or blocked 90% of the UV radiation. All climate change manipulation treatments decreased litter decomposition compared to the control treatment. In particular, litter decay rates were reduced by a 34%, 43% and 62% in the rainfall reduction (RE), warming (W), and the combination of warming and rainfall reduction (WRE) treatments, respectively, compared to the control treatment. Across climate manipulation treatments, higher decay rates were observed in litter exposed to UV radiation than in litter non-exposed to UV radiation, and in litter placed on the ground than in standing litter. However, significant interactions were found between climate manipulation and UV exposure or position treatments. In the control and RE treatments, litter on the ground decomposed 25% faster than standing litter. In theWand WRE treatments, litter decomposition rates increased by 29% when exposed to UV radiation despite lower overall decay rates were observed in these treatments. Overall, lignin losses were parallelled by increases in soluble cell materials, particularly when litter was exposed to UV radiation. Our results indicate that predicted climate change scenarios will likely reduce leaf litter decomposition rates, while enhancing the relative contribution of photodegradation to overall litter decomposition in dry perennial Mediterranean grasslands.ElsevierUniversidad Complutense de Madrid20152015-01-0120152015-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://hdl.handle.net/20.500.14352/93268reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/932682026-06-02T12:44:21Z
dc.title.none.fl_str_mv Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands
title Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands
spellingShingle Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands
Almagro, María
631.4
574
551.588.7
Leaf litter decomposition
Alpha grass steppe
Climate change manipulation experiments
Photodegradation
Drylands
Ecología (Biología)
Edafología (Biología)
2511 Ciencias del Suelo (Edafología)
2417.13 Ecología Vegetal
2502 Climatología
title_short Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands
title_full Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands
title_fullStr Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands
title_full_unstemmed Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands
title_sort Climate change may reduce litter decomposition while enhancing the contribution of photodegradation in dry perennial Mediterranean grasslands
dc.creator.none.fl_str_mv Almagro, María
Maestre, Fernando
Martínez-López, Javier
Valencia Gómez, Enrique
Rey Muñoz, Ana Isabel
author Almagro, María
author_facet Almagro, María
Maestre, Fernando
Martínez-López, Javier
Valencia Gómez, Enrique
Rey Muñoz, Ana Isabel
author_role author
author2 Maestre, Fernando
Martínez-López, Javier
Valencia Gómez, Enrique
Rey Muñoz, Ana Isabel
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 631.4
574
551.588.7
Leaf litter decomposition
Alpha grass steppe
Climate change manipulation experiments
Photodegradation
Drylands
Ecología (Biología)
Edafología (Biología)
2511 Ciencias del Suelo (Edafología)
2417.13 Ecología Vegetal
2502 Climatología
topic 631.4
574
551.588.7
Leaf litter decomposition
Alpha grass steppe
Climate change manipulation experiments
Photodegradation
Drylands
Ecología (Biología)
Edafología (Biología)
2511 Ciencias del Suelo (Edafología)
2417.13 Ecología Vegetal
2502 Climatología
description Understanding how the interactions between solar UV radiation and climate will affect leaf litter decomposition is fundamental to predict how soil and ecosystem biogeochemical cycles will respond to ongoing climate change. We carried out a manipulative experiment to investigate how UV radiation and its interaction with increased temperature (3 C on average) and a ~35% reduction in precipitation affect the decomposition of “standing” and “on the ground” litter of Stipa tenacissima, a dominant species in semiarid Mediterranean grasslands. UV radiation was manipulated using specially designed screens that either passed or blocked 90% of the UV radiation. All climate change manipulation treatments decreased litter decomposition compared to the control treatment. In particular, litter decay rates were reduced by a 34%, 43% and 62% in the rainfall reduction (RE), warming (W), and the combination of warming and rainfall reduction (WRE) treatments, respectively, compared to the control treatment. Across climate manipulation treatments, higher decay rates were observed in litter exposed to UV radiation than in litter non-exposed to UV radiation, and in litter placed on the ground than in standing litter. However, significant interactions were found between climate manipulation and UV exposure or position treatments. In the control and RE treatments, litter on the ground decomposed 25% faster than standing litter. In theWand WRE treatments, litter decomposition rates increased by 29% when exposed to UV radiation despite lower overall decay rates were observed in these treatments. Overall, lignin losses were parallelled by increases in soluble cell materials, particularly when litter was exposed to UV radiation. Our results indicate that predicted climate change scenarios will likely reduce leaf litter decomposition rates, while enhancing the relative contribution of photodegradation to overall litter decomposition in dry perennial Mediterranean grasslands.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01
2015
2015-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/93268
url https://hdl.handle.net/20.500.14352/93268
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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