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

التفاصيل البيبلوغرافية
العنوان: Natural selection favours drought escape and an acquisitive resource-use strategy in semi-arid Mediterranean shrubs
المؤلفون: Blanco-Sánchez, Mario, Ramos-Muñoz, Marina, Pías, Beatriz, Ramírez-Valiente, José Alberto, Díaz-Guerra, Laura, Escudero, Adrián, Matesanz, Silvia
المساهمون: Ministerio de Economía y Competitividad (España), Comunidad de Madrid, Blanco-Sánchez, Mario, Ramos-Muñoz, Marina, Pías, Beatriz, Ramírez-Valiente, José Alberto, Díaz-Guerra, Laura, Escudero, Adrián, Matesanz, Silvia
بيانات النشر: British Ecological Society
سنة النشر: 2022
المجموعة: Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council)
مصطلحات موضوعية: Acquisitive strategy, Gypsum specialists, Individual fitness, Mediterranean, Natural selection, Phenotypic selection, Selection differential, Stress escape
الوصف: 14Pág. Centro de Investigación Forestal (CIFOR) ; 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 ...
نوع الوثيقة: article in journal/newspaper
اللغة: English
تدمد: 0269-8463
العلاقة: #PLACEHOLDER_PARENT_METADATA_VALUE#; info:eu-repo/grantAgreement/MINECO/ GYPSEVOL/CGL2016-75566-P; S2013/MAE-2719; Functional Ecology; Publisher's version; https://doi.org/10.1111/1365-2435.14121Test; Sí; Functional Ecology Functional Ecology 36(9): 2289–2302(2022); http://hdl.handle.net/10261/279202Test; http://dx.doi.org/10.13039/100012818Test; http://dx.doi.org/10.13039/501100003329Test; 2-s2.0-85133962031; https://api.elsevier.com/content/abstract/scopus_id/85133962031Test
DOI: 10.1111/1365-2435.14121
DOI: 10.13039/100012818
DOI: 10.13039/501100003329
الإتاحة: https://doi.org/10.1111/1365-2435.14121Test
https://doi.org/10.13039/100012818Test
https://doi.org/10.13039/501100003329Test
http://hdl.handle.net/10261/279202Test
https://api.elsevier.com/content/abstract/scopus_id/85133962031Test
حقوق: open
رقم الانضمام: edsbas.BC123B0D
قاعدة البيانات: BASE
الوصف
تدمد:02698463
DOI:10.1111/1365-2435.14121