Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs

Natural selection is the major force driving adaptive evolution in natural populations, varying in strength, direction, and form through space and time, especially in highly variable environments such as Mediterranean ecosystems. Although a conservative resource-use strategy has been hypothesized to...

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Autores: Blanco-Sánchez, Mario, Ramos-Muñoz, Marina, Pías, Beatriz, Ramírez-Valiente, José Alberto, Díaz Guerra, Laura, Escudero, Adrián, Matesanz, Silvia
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2022
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositório:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/21611
Acesso em linha:http://hdl.handle.net/10256/21611
Access Level:Acceso aberto
Palavra-chave:Selecció natural
Natural selection
Arbustos -- Adaptació
Shrubs -- Adaptation
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spelling Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubsBlanco-Sánchez, MarioRamos-Muñoz, MarinaPías, BeatrizRamírez-Valiente, José AlbertoDíaz Guerra, LauraEscudero, AdriánMatesanz, SilviaSelecció naturalNatural selectionArbustos -- AdaptacióShrubs -- AdaptationNatural selection is the major force driving adaptive evolution in natural populations, varying in strength, direction, and form through space and time, especially in highly variable environments such as Mediterranean ecosystems. Although a conservative resource-use strategy has been hypothesized to be adaptive in Mediterranean taxa, patterns of selection at the intraspecific level, that is, the suite of traits determining individual fitness, are largely unknown. Using a phenotypic selection experiment in natural semi-arid conditions, we measured direct and indirect selection acting through two different fitness components (survival and reproduction), to assess the adaptive value of 20 ecophysiological traits on individuals of two gypsum endemic species, Centaurea hyssopifolia and Helianthemum squamatum, dwelling in environments with contrasting abiotic conditions (south- and north-facing slopes) during two climatically contrasting years (dry and mesic). This allowed quantifying the magnitude and direction of natural selection at different spatiotemporal scales. Our results revealed that different abiotic conditions did not alter selection patterns, being the magnitude of selection more strongly affected by temporal environmental variation. Selection through reproduction indicated consistent selection for early phenology, low water use efficiency, high specific leaf area, low leaf dry matter content, and high leaf N across slopes and years in both species. In contrast, phenotypic trait variation was not linked to survival in either species. Furthermore, while individual reproductive output was higher or similar in environments with higher abiotic stress in both species and years, survival was similar across environmental conditions, and it was neither affected by plant size nor reproductive output. Contrary to our expectations, natural selection via reproductive fitness consistently favoured a drought-escape, acquisitive resource-use strategy in Mediterranean semi-arid plants, rather than a conservative resource-use strategy, even under conditions of higher abiotic stress (i.e. south slopes and dry year). Such acquisitive strategy could allow rapid development by maximizing resource assimilation and reproduction before the most limiting climatic conditions of mid-late summer. Our results shed light on adaptive functional strategies of Mediterranean taxa at the intraspecific level, providing insight on future responses to environmental change, and highlight remarkable differences in selection acting through different fitness componentsComunidad de Madrid, Grant/Award Number: Remedinal3-CM/S2013/MAE-2719; Ministerio de Economía y Competitividad, Grant/Award Number: GYPSEVOL/CGL2016-75566-PBritish Ecological SocietyWiley2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpeer-reviewedapplication/pdfhttp://hdl.handle.net/10256/21611http://hdl.handle.net/10256/21611Functional Ecology, 2022, vol. 36, núm. 9, p. 2289-2302Articles publicats (D-CCAA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2435.14121info:eu-repo/semantics/altIdentifier/issn/0269-8463info:eu-repo/semantics/altIdentifier/eissn/1365-2435Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:10256/216112026-05-29T05:05:01Z
dc.title.none.fl_str_mv Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
title Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
spellingShingle Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
Blanco-Sánchez, Mario
Selecció natural
Natural selection
Arbustos -- Adaptació
Shrubs -- Adaptation
title_short Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
title_full Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
title_fullStr Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
title_full_unstemmed Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
title_sort Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
dc.creator.none.fl_str_mv Blanco-Sánchez, Mario
Ramos-Muñoz, Marina
Pías, Beatriz
Ramírez-Valiente, José Alberto
Díaz Guerra, Laura
Escudero, Adrián
Matesanz, Silvia
author Blanco-Sánchez, Mario
author_facet Blanco-Sánchez, Mario
Ramos-Muñoz, Marina
Pías, Beatriz
Ramírez-Valiente, José Alberto
Díaz Guerra, Laura
Escudero, Adrián
Matesanz, Silvia
author_role author
author2 Ramos-Muñoz, Marina
Pías, Beatriz
Ramírez-Valiente, José Alberto
Díaz Guerra, Laura
Escudero, Adrián
Matesanz, Silvia
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Selecció natural
Natural selection
Arbustos -- Adaptació
Shrubs -- Adaptation
topic Selecció natural
Natural selection
Arbustos -- Adaptació
Shrubs -- Adaptation
description Natural selection is the major force driving adaptive evolution in natural populations, varying in strength, direction, and form through space and time, especially in highly variable environments such as Mediterranean ecosystems. Although a conservative resource-use strategy has been hypothesized to be adaptive in Mediterranean taxa, patterns of selection at the intraspecific level, that is, the suite of traits determining individual fitness, are largely unknown. Using a phenotypic selection experiment in natural semi-arid conditions, we measured direct and indirect selection acting through two different fitness components (survival and reproduction), to assess the adaptive value of 20 ecophysiological traits on individuals of two gypsum endemic species, Centaurea hyssopifolia and Helianthemum squamatum, dwelling in environments with contrasting abiotic conditions (south- and north-facing slopes) during two climatically contrasting years (dry and mesic). This allowed quantifying the magnitude and direction of natural selection at different spatiotemporal scales. Our results revealed that different abiotic conditions did not alter selection patterns, being the magnitude of selection more strongly affected by temporal environmental variation. Selection through reproduction indicated consistent selection for early phenology, low water use efficiency, high specific leaf area, low leaf dry matter content, and high leaf N across slopes and years in both species. In contrast, phenotypic trait variation was not linked to survival in either species. Furthermore, while individual reproductive output was higher or similar in environments with higher abiotic stress in both species and years, survival was similar across environmental conditions, and it was neither affected by plant size nor reproductive output. Contrary to our expectations, natural selection via reproductive fitness consistently favoured a drought-escape, acquisitive resource-use strategy in Mediterranean semi-arid plants, rather than a conservative resource-use strategy, even under conditions of higher abiotic stress (i.e. south slopes and dry year). Such acquisitive strategy could allow rapid development by maximizing resource assimilation and reproduction before the most limiting climatic conditions of mid-late summer. Our results shed light on adaptive functional strategies of Mediterranean taxa at the intraspecific level, providing insight on future responses to environmental change, and highlight remarkable differences in selection acting through different fitness components
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
peer-reviewed
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/21611
http://hdl.handle.net/10256/21611
url http://hdl.handle.net/10256/21611
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/1365-2435.14121
info:eu-repo/semantics/altIdentifier/issn/0269-8463
info:eu-repo/semantics/altIdentifier/eissn/1365-2435
dc.rights.none.fl_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv British Ecological Society
Wiley
publisher.none.fl_str_mv British Ecological Society
Wiley
dc.source.none.fl_str_mv Functional Ecology, 2022, vol. 36, núm. 9, p. 2289-2302
Articles publicats (D-CCAA)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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