Analysis of genetic diversity in fragmented and continuous populations of Aspidosperma quebracho-blanco (Apocynaceae) from the semi-arid Chaco
Background and aims: The loss and fragmentation of the Chaco Forest due to deforestation could affect the genetic diversity of species. Previous analyses of Aspidosperma quebracho-blanco, an emblematic forest species of the region, suggested that populations in the northern Semi-arid Chaco of Argent...
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Sociedad Argentina de Botánica
2024
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/44896 |
| Aporte de: |
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I10-R325-article-44896 |
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ojs |
| institution |
Universidad Nacional de Córdoba |
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I-10 |
| repository_str |
R-325 |
| container_title_str |
Boletín de la Sociedad Argentina de Botánica |
| language |
Español |
| format |
Artículo revista |
| topic |
AFLP estructura genética fragmentación variabilidad genética AFLP fragmentation genetic structure |
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AFLP estructura genética fragmentación variabilidad genética AFLP fragmentation genetic structure Almirón, Noelia E. A. Solís Neffa, Viviana Analysis of genetic diversity in fragmented and continuous populations of Aspidosperma quebracho-blanco (Apocynaceae) from the semi-arid Chaco |
| topic_facet |
AFLP estructura genética fragmentación variabilidad genética AFLP fragmentation genetic structure |
| author |
Almirón, Noelia E. A. Solís Neffa, Viviana |
| author_facet |
Almirón, Noelia E. A. Solís Neffa, Viviana |
| author_sort |
Almirón, Noelia E. A. |
| title |
Analysis of genetic diversity in fragmented and continuous populations of Aspidosperma quebracho-blanco (Apocynaceae) from the semi-arid Chaco |
| title_short |
Analysis of genetic diversity in fragmented and continuous populations of Aspidosperma quebracho-blanco (Apocynaceae) from the semi-arid Chaco |
| title_full |
Analysis of genetic diversity in fragmented and continuous populations of Aspidosperma quebracho-blanco (Apocynaceae) from the semi-arid Chaco |
| title_fullStr |
Analysis of genetic diversity in fragmented and continuous populations of Aspidosperma quebracho-blanco (Apocynaceae) from the semi-arid Chaco |
| title_full_unstemmed |
Analysis of genetic diversity in fragmented and continuous populations of Aspidosperma quebracho-blanco (Apocynaceae) from the semi-arid Chaco |
| title_sort |
analysis of genetic diversity in fragmented and continuous populations of aspidosperma quebracho-blanco (apocynaceae) from the semi-arid chaco |
| description |
Background and aims: The loss and fragmentation of the Chaco Forest due to deforestation could affect the genetic diversity of species. Previous analyses of Aspidosperma quebracho-blanco, an emblematic forest species of the region, suggested that populations in the northern Semi-arid Chaco of Argentina are of interest for in situ conservation and restoration. Thus, we analyzed the genetic diversity and structure of fragmented and continuous populations of Aspidosperma quebracho-blanco from this region to assess the risk of genetic erosion and the role of fragmented habitats in the conservation of this species.
M&M: Using 4 AFLP marker combinations, the genetic variability and structure of 49 individuals from 2 continuous and 3 fragmented populations of A. quebracho-blanco were analyzed. This analysis was conducted in the context of territorial forest planning, considering the distribution of protected areas, ecological corridors, land use, and the area of the forest fragments.
Results: The differences in the estimated genetic variability indices between the continuous and fragmented populations studied were not significant (pHe=0.62, pSh=0.53, p%P=0.68). The genetic structure is moderate and correlates with the distance between populations. The most vulnerable populations are located in areas where land use is allowed.
Conclusions: Forest fragments are important for the conservation of A. quebracho-blanco. However, in the short term, ecological, and demographic factors may have a greater impact on the viability of its populations than genetic erosion caused by fragmentation. |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2024 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/44896 |
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AT almironnoeliaea analysisofgeneticdiversityinfragmentedandcontinuouspopulationsofaspidospermaquebrachoblancoapocynaceaefromthesemiaridchaco AT solisneffaviviana analysisofgeneticdiversityinfragmentedandcontinuouspopulationsofaspidospermaquebrachoblancoapocynaceaefromthesemiaridchaco AT almironnoeliaea analisisdeladiversidadgeneticaenpoblacionesfragmentadasycontinuasdeaspidospermaquebrachoblancoapocynaceaedelchacosemiarido AT solisneffaviviana analisisdeladiversidadgeneticaenpoblacionesfragmentadasycontinuasdeaspidospermaquebrachoblancoapocynaceaedelchacosemiarido |
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2025-02-05T22:20:46Z |
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2025-02-05T22:20:46Z |
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I10-R325-article-448962024-12-30T13:41:49Z Analysis of genetic diversity in fragmented and continuous populations of Aspidosperma quebracho-blanco (Apocynaceae) from the semi-arid Chaco Análisis de la diversidad genética en poblaciones fragmentadas y continuas de Aspidosperma quebracho-blanco (Apocynaceae) del Chaco Semiárido Almirón, Noelia E. A. Solís Neffa, Viviana AFLP estructura genética fragmentación variabilidad genética AFLP fragmentation genetic structure Background and aims: The loss and fragmentation of the Chaco Forest due to deforestation could affect the genetic diversity of species. Previous analyses of Aspidosperma quebracho-blanco, an emblematic forest species of the region, suggested that populations in the northern Semi-arid Chaco of Argentina are of interest for in situ conservation and restoration. Thus, we analyzed the genetic diversity and structure of fragmented and continuous populations of Aspidosperma quebracho-blanco from this region to assess the risk of genetic erosion and the role of fragmented habitats in the conservation of this species. M&M: Using 4 AFLP marker combinations, the genetic variability and structure of 49 individuals from 2 continuous and 3 fragmented populations of A. quebracho-blanco were analyzed. This analysis was conducted in the context of territorial forest planning, considering the distribution of protected areas, ecological corridors, land use, and the area of the forest fragments. Results: The differences in the estimated genetic variability indices between the continuous and fragmented populations studied were not significant (pHe=0.62, pSh=0.53, p%P=0.68). The genetic structure is moderate and correlates with the distance between populations. The most vulnerable populations are located in areas where land use is allowed. Conclusions: Forest fragments are important for the conservation of A. quebracho-blanco. However, in the short term, ecological, and demographic factors may have a greater impact on the viability of its populations than genetic erosion caused by fragmentation. Introducción y objetivos: La pérdida y fragmentación del bosque chaqueño, provocadas por su deforestación, podría tener un impacto significativo en la diversidad genética de las especies que lo habitan. Análisis previos en Aspidosperma quebracho-blanco, una especie forestal emblemática de la región, han indicado que las poblaciones del norte del Chaco Semiárido de Argentina son cruciales para la conservación in situ y la restauración. Se analizó la diversidad y estructura genética de poblaciones fragmentadas y continuas de A. quebracho-blanco de esta región, a fin de evaluar el riesgo de erosión genética y el papel que desempeñan los hábitats fragmentados en la conservación de esta especie. M&M: Se analizó la variabilidad y estructura genética de 49 individuos de A. quebracho-blanco en 2 poblaciones continuas y 3 fragmentadas, utilizando 4 combinaciones de marcadores AFLP. El estudio se llevó a cabo en relación con el ordenamiento territorial de los bosques, la distribución de áreas protegidas y corredores ecológicos, el uso del suelo y el tamaño de los fragmentos. Resultados: Las diferencias de los índices de variabilidad genética estimados entre las poblaciones continuas y fragmentadas no fueron significativas (pHe=0,62; pSh=0,53; p%P=0,68). La estructura genética es moderada y está correlacionada con la distancia entre poblaciones. Las poblaciones más vulnerables se encuentran en áreas donde se permite el uso del suelo. Conclusiones: Los fragmentos boscosos podrían desempeñar un papel relevante en la conservación de A. quebracho-blanco, aunque, a corto plazo, los factores ecológicos y demográficos podrían influir más en la viabilidad de las poblaciones que la erosión genética causada por la fragmentación. Sociedad Argentina de Botánica 2024-12-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html application/vnd.openxmlformats-officedocument.spreadsheetml.sheet https://revistas.unc.edu.ar/index.php/BSAB/article/view/44896 10.31055/1851.2372.v59.n4.44896 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 59 No. 4 (2024): December Boletín de la Sociedad Argentina de Botánica; Vol. 59 Núm. 4 (2024): Diciembre Boletín de la Sociedad Argentina de Botánica; v. 59 n. 4 (2024): Diciembre 1851-2372 0373-580X 10.31055/1851.2372.v59.n4 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/44896/48267 https://revistas.unc.edu.ar/index.php/BSAB/article/view/44896/48268 https://revistas.unc.edu.ar/index.php/BSAB/article/view/44896/48269 Derechos de autor 2024 Noelia E. A. Almirón, Viviana Solís Neffa https://creativecommons.org/licenses/by-nc-nd/4.0 |