Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species
Understanding the impact of management on the dispersal potential of forest tree species is pivotal in the context of global change, given the implications of gene flow on species evolution. We aimed to determine the effect of logging on gene flow distances in two Nothofagus species from temperate P...
| Autores principales: | , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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Oxford University Press
2020
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/7389 https://academic.oup.com/forestry/advance-article-abstract/doi/10.1093/forestry/cpaa008/5838454 https://doi.org/10.1093/forestry/cpaa008 |
| _version_ | 1855035849095249920 |
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| author | Sola, Georgina Giselle El Mujtar, Veronica Andrea Gallo, Leonardo Ariel Vendramin, Giovanni Giuseppe Marchelli, Paula |
| author_browse | El Mujtar, Veronica Andrea Gallo, Leonardo Ariel Marchelli, Paula Sola, Georgina Giselle Vendramin, Giovanni Giuseppe |
| author_facet | Sola, Georgina Giselle El Mujtar, Veronica Andrea Gallo, Leonardo Ariel Vendramin, Giovanni Giuseppe Marchelli, Paula |
| author_sort | Sola, Georgina Giselle |
| collection | INTA Digital |
| description | Understanding the impact of management on the dispersal potential of forest tree species is pivotal in the context of global change, given the implications of gene flow on species evolution. We aimed to determine the effect of logging on gene flow distances in two Nothofagus species from temperate Patagonian forests having high ecological relevance and wood quality. Therefore, a total of 778 individuals (mature trees and saplings) of Nothofagus alpina and N. obliqua, from a single plot managed 20 years ago (2.85 hectares), were mapped and genotyped at polymorphic nuclear microsatellite loci. Historical estimates of gene dispersal distance (based
on fine-scale spatial genetic structure) and contemporary estimates of seed and pollen dispersal (based on spatially explicit mating models) were obtained. The results indicated restricted gene flow (gene distance ≤ 45 m, both pollen and seed), no selfing and significant seed and pollen immigration from trees located outside the studied plot but in the close surrounding area. The size of trees (diameter at breast height and height) was significantly associated with female and/or male fertility. The significant fine-scale spatial genetic structure was consistent with the restricted seed and pollen dispersal. Moreover, both estimates of gene dispersal (historical
and contemporary) gave congruent results. This suggests that the recent history of logging within the study area has not significantly influenced on patterns of gene flow, which can be explained by the silviculture applied to the stand. The residual tree density maintained species composition, and the homogeneous spatial distribution of trees allowed the maintenance of gene dispersal. The short dispersal distance estimated for these two species has several implications both for understanding the evolution of the species and for defining management, conservation and restoration actions. Future replication of this study in other Nothofagus Patagonian forests would be helpful to validate our conclusions. |
| format | info:ar-repo/semantics/artículo |
| id | INTA7389 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | INTA73892020-12-17T15:38:42Z Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species Sola, Georgina Giselle El Mujtar, Veronica Andrea Gallo, Leonardo Ariel Vendramin, Giovanni Giuseppe Marchelli, Paula Bosques Nothofagus Recursos Genéticos Forestales Forests Forest Genetic Resources Región Patagónica Nothofagus Obliqua Nothofagus Alpina Dispersión Genética Understanding the impact of management on the dispersal potential of forest tree species is pivotal in the context of global change, given the implications of gene flow on species evolution. We aimed to determine the effect of logging on gene flow distances in two Nothofagus species from temperate Patagonian forests having high ecological relevance and wood quality. Therefore, a total of 778 individuals (mature trees and saplings) of Nothofagus alpina and N. obliqua, from a single plot managed 20 years ago (2.85 hectares), were mapped and genotyped at polymorphic nuclear microsatellite loci. Historical estimates of gene dispersal distance (based on fine-scale spatial genetic structure) and contemporary estimates of seed and pollen dispersal (based on spatially explicit mating models) were obtained. The results indicated restricted gene flow (gene distance ≤ 45 m, both pollen and seed), no selfing and significant seed and pollen immigration from trees located outside the studied plot but in the close surrounding area. The size of trees (diameter at breast height and height) was significantly associated with female and/or male fertility. The significant fine-scale spatial genetic structure was consistent with the restricted seed and pollen dispersal. Moreover, both estimates of gene dispersal (historical and contemporary) gave congruent results. This suggests that the recent history of logging within the study area has not significantly influenced on patterns of gene flow, which can be explained by the silviculture applied to the stand. The residual tree density maintained species composition, and the homogeneous spatial distribution of trees allowed the maintenance of gene dispersal. The short dispersal distance estimated for these two species has several implications both for understanding the evolution of the species and for defining management, conservation and restoration actions. Future replication of this study in other Nothofagus Patagonian forests would be helpful to validate our conclusions. Estación Experimental Agropecuaria Bariloche Fil: Sola, Georgina Giselle. Universidad Nacional del Comahue. Catedra de Ordenacion Forestal; Argentina Fil: El Mujtar, Veronica Andrea. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Gallo, Leonardo Ariel.Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina Fil: Vendramin, Giovanni Giuseppe. National Research Council of Italy. Institute of Biosciences and Bioresources. Division of Florence; Italia Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche; Argentina 2020-06-10T13:47:36Z 2020-06-10T13:47:36Z 2020-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/7389 https://academic.oup.com/forestry/advance-article-abstract/doi/10.1093/forestry/cpaa008/5838454 1464-3626 0015-752X https://doi.org/10.1093/forestry/cpaa008 eng info:eu-repo/semantics/restrictedAccess application/pdf Oxford University Press Forestry 93 (5) : 652-661 (Octubre 2020) |
| spellingShingle | Bosques Nothofagus Recursos Genéticos Forestales Forests Forest Genetic Resources Región Patagónica Nothofagus Obliqua Nothofagus Alpina Dispersión Genética Sola, Georgina Giselle El Mujtar, Veronica Andrea Gallo, Leonardo Ariel Vendramin, Giovanni Giuseppe Marchelli, Paula Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species |
| title | Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species |
| title_full | Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species |
| title_fullStr | Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species |
| title_full_unstemmed | Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species |
| title_short | Staying close: short local dispersal distances on a managed forest of two Patagonian Nothofagus species |
| title_sort | staying close short local dispersal distances on a managed forest of two patagonian nothofagus species |
| topic | Bosques Nothofagus Recursos Genéticos Forestales Forests Forest Genetic Resources Región Patagónica Nothofagus Obliqua Nothofagus Alpina Dispersión Genética |
| url | http://hdl.handle.net/20.500.12123/7389 https://academic.oup.com/forestry/advance-article-abstract/doi/10.1093/forestry/cpaa008/5838454 https://doi.org/10.1093/forestry/cpaa008 |
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