Warming alters the responses to light availability in seedlings from contrasting provenances of the mid-tolerant beech Nothofagus pumilio
The survival and growth of shade-tolerant tree seedlings depend strongly on their ability to respond to varying light conditions in both natural and managed systems. Rising temperatures may constrain these light-driven responses, posing challenges for forest management and afforestation efforts. Thi...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Elsevier
2025
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| Online Access: | http://hdl.handle.net/20.500.12123/22522 https://www.sciencedirect.com/science/article/abs/pii/S037811272400776X https://doi.org/10.1016/j.foreco.2024.122464 |
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| author | Aparicio, Alejandro Gabriel Torres, Ana Delia Pastorino, Mario Juan |
| author_browse | Aparicio, Alejandro Gabriel Pastorino, Mario Juan Torres, Ana Delia |
| author_facet | Aparicio, Alejandro Gabriel Torres, Ana Delia Pastorino, Mario Juan |
| author_sort | Aparicio, Alejandro Gabriel |
| collection | INTA Digital |
| description | The survival and growth of shade-tolerant tree seedlings depend strongly on their ability to respond to varying light conditions in both natural and managed systems. Rising temperatures may constrain these light-driven responses, posing challenges for forest management and afforestation efforts. This study examines how warming affects light responses in Nothofagus pumilio seedlings, using a multi-site genetic trial. Seedlings from four environmentally contrasting provenances were subjected to three thermal regimes, simulating future climates, and three light availability levels during their first post-planting year. Warming significantly reduced the magnitude and amplitude of reaction of growth responses, particularly biomass allocation and crown architecture traits. For example, the mean total dry weight at the coolest site (TDW= 7.43 g) increased by 56 % from low to mid-light availability, compared to only 3 % at the warmest site (TDW= 5.62 g). Moreover, while the average length of the annual shoot (l.AS) exhibited a 26 % increase at the coolest site (l.AS= 15.4 cm), at the warmest site (l.AS= 9.1 cm) it decreased by 20 % from low to mid-light levels. Marked genetic differences were observed between northern and southern provenances, especially in leaf morpho-physiological traits. These findings highlight the need for carefully targeted site selection for afforestation, favoring stable light conditions near new optimum. Nurse vegetation management and other protective measures may become increasingly necessary. This research provides critical insights for the development of seed orchards and transfer zones in N. pumilio, informing conservation and utilization strategies to enhance its resilience facing climate change. |
| format | info:ar-repo/semantics/artículo |
| id | INTA22522 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA225222025-06-05T13:02:01Z Warming alters the responses to light availability in seedlings from contrasting provenances of the mid-tolerant beech Nothofagus pumilio Aparicio, Alejandro Gabriel Torres, Ana Delia Pastorino, Mario Juan Nothofagus Nothofagus pumilio Shade Tolerance Phenotypic Plasticity Temperature Forests Tolerancia a la Sombra Plasticidad Fenotípica Temperatura Bosques The survival and growth of shade-tolerant tree seedlings depend strongly on their ability to respond to varying light conditions in both natural and managed systems. Rising temperatures may constrain these light-driven responses, posing challenges for forest management and afforestation efforts. This study examines how warming affects light responses in Nothofagus pumilio seedlings, using a multi-site genetic trial. Seedlings from four environmentally contrasting provenances were subjected to three thermal regimes, simulating future climates, and three light availability levels during their first post-planting year. Warming significantly reduced the magnitude and amplitude of reaction of growth responses, particularly biomass allocation and crown architecture traits. For example, the mean total dry weight at the coolest site (TDW= 7.43 g) increased by 56 % from low to mid-light availability, compared to only 3 % at the warmest site (TDW= 5.62 g). Moreover, while the average length of the annual shoot (l.AS) exhibited a 26 % increase at the coolest site (l.AS= 15.4 cm), at the warmest site (l.AS= 9.1 cm) it decreased by 20 % from low to mid-light levels. Marked genetic differences were observed between northern and southern provenances, especially in leaf morpho-physiological traits. These findings highlight the need for carefully targeted site selection for afforestation, favoring stable light conditions near new optimum. Nurse vegetation management and other protective measures may become increasingly necessary. This research provides critical insights for the development of seed orchards and transfer zones in N. pumilio, informing conservation and utilization strategies to enhance its resilience facing climate change. EEA Bariloche Fil: Aparicio, Alejandro Gabriel. Instituto Nacional de Tecnologia Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Aparicio, Alejandro Gabriel. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Torres, Ana Delia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Torres, Ana Delia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Pastorino, Mario Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Pastorino, Mario Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina 2025-06-05T12:55:52Z 2025-06-05T12:55:52Z 2025-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/22522 https://www.sciencedirect.com/science/article/abs/pii/S037811272400776X 0378-1127 1872-7042 https://doi.org/10.1016/j.foreco.2024.122464 eng info:eu-repograntAgreement/INTA/PNFOR-1104063/AR./Mejoramiento genético de especies forestales nativas de alto valor. info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Elsevier Forest Ecology and Management 578 : 122464. (February 2025) |
| spellingShingle | Nothofagus Nothofagus pumilio Shade Tolerance Phenotypic Plasticity Temperature Forests Tolerancia a la Sombra Plasticidad Fenotípica Temperatura Bosques Aparicio, Alejandro Gabriel Torres, Ana Delia Pastorino, Mario Juan Warming alters the responses to light availability in seedlings from contrasting provenances of the mid-tolerant beech Nothofagus pumilio |
| title | Warming alters the responses to light availability in seedlings from contrasting provenances of the mid-tolerant beech Nothofagus pumilio |
| title_full | Warming alters the responses to light availability in seedlings from contrasting provenances of the mid-tolerant beech Nothofagus pumilio |
| title_fullStr | Warming alters the responses to light availability in seedlings from contrasting provenances of the mid-tolerant beech Nothofagus pumilio |
| title_full_unstemmed | Warming alters the responses to light availability in seedlings from contrasting provenances of the mid-tolerant beech Nothofagus pumilio |
| title_short | Warming alters the responses to light availability in seedlings from contrasting provenances of the mid-tolerant beech Nothofagus pumilio |
| title_sort | warming alters the responses to light availability in seedlings from contrasting provenances of the mid tolerant beech nothofagus pumilio |
| topic | Nothofagus Nothofagus pumilio Shade Tolerance Phenotypic Plasticity Temperature Forests Tolerancia a la Sombra Plasticidad Fenotípica Temperatura Bosques |
| url | http://hdl.handle.net/20.500.12123/22522 https://www.sciencedirect.com/science/article/abs/pii/S037811272400776X https://doi.org/10.1016/j.foreco.2024.122464 |
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