Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio
Un amplio conocimiento de las consecuencias ecológicas y genéticas de la aplicación de las prácticas de gestión en los ecosistemas naturales es de fundamental importancia para las acciones de conservación. El principal objetivo de este estudio fue evaluar el impacto de las prácticas de gestión de...
| Main Authors: | , , , |
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| Format: | Artículo |
| Language: | Inglés |
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2017
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| Online Access: | http://hdl.handle.net/20.500.12123/1316 http://www.sciencedirect.com/science/article/pii/S0378112716301918 https://doi.org/10.1016/j.foreco.2016.04.032 |
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| author | Soliani, Carolina Gallo, Leonardo Ariel Marchelli, Paula Vendramin, Giovanni Giuseppe |
| author_browse | Gallo, Leonardo Ariel Marchelli, Paula Soliani, Carolina Vendramin, Giovanni Giuseppe |
| author_facet | Soliani, Carolina Gallo, Leonardo Ariel Marchelli, Paula Vendramin, Giovanni Giuseppe |
| author_sort | Soliani, Carolina |
| collection | INTA Digital |
| description | Un amplio conocimiento de las consecuencias ecológicas y genéticas de la aplicación de las prácticas de gestión en los ecosistemas naturales es de fundamental importancia para las acciones de conservación.
El principal objetivo de este estudio fue evaluar el impacto de las prácticas de gestión de la diversidad genética y la estructura genética espacial contrastando los bosques, a través de un diseño de muestreo de las clases de edad y el uso de marcadores de microsatélites. |
| format | Artículo |
| id | INTA1316 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA13162018-01-12T13:29:34Z Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio Soliani, Carolina Gallo, Leonardo Ariel Marchelli, Paula Vendramin, Giovanni Giuseppe Producción Forestal Nothofagus Pumilio Variación Genética Aprovechamiento de la Madera Microsatélites Forestry Production Genetic Variation Logging Microsatellites Un amplio conocimiento de las consecuencias ecológicas y genéticas de la aplicación de las prácticas de gestión en los ecosistemas naturales es de fundamental importancia para las acciones de conservación. El principal objetivo de este estudio fue evaluar el impacto de las prácticas de gestión de la diversidad genética y la estructura genética espacial contrastando los bosques, a través de un diseño de muestreo de las clases de edad y el uso de marcadores de microsatélites. Extensive knowledge of the ecological and genetic consequences of implementing management practices (i.e. logging) in natural ecosystems is of fundamental importance to conservation action. Accordingly, characterization of forest genetic resources in managed vs non-managed stands may inform management decisions to ensure the long-term persistence of genetic diversity. The main objective of this study was to evaluate the impact of management practices on the genetic diversity and spatial genetic structure of contrasting forests, through an age-class sampling design and the use of microsatellite markers. We evaluated the impact of logging in three populations of Nothofagus pumilio, a dominant tree species in Patagonian temperate forests, by comparing managed and non-managed stands in each population. Selective extraction of best-featured individuals, i.e. those with forestry aptitude, such as higher trees with straight trunks and good sanitary conditions, was performed between 1990 and 2004. One of the studied sites was located in a state-protected area while the others were on private land affected by grazing. At each managed stand over-mature trees (MF-O), adult remnant trees (MF-A) and seedlings representing forest regeneration (MF-R) after silvicultural management were sampled. In non-managed stands age classes were restricted to adults (CF-A) and seedlings (CF-R). A minimum of 30 individuals per age class were collected, totalling 454 samples which were genotyped at six microsatellite loci. Non-significant differences in genetic diversity were found between managed and natural woods in all populations. A trend towards decreasing frequencies or even allele loss among remnant adults of logged stands can however be interpreted as a sign of impact, probably a consequence of genetic drift. Each site showed particular, different outcomes with respect to genetic structure. While in Pop 1 (Huemules, 42°S) significant genetic differentiation was found between management treatments, admixture of genetic clusters (Bayesian clustering and DAPC analysis) occurred in Pop 2 (Guacho Lake, 43°S) and no genetic structure was found in Pop 3 (Engaño Lake, 43°S). Post-harvest genetic contact between contrasting stands is likely. A Landscape Interpolation Analysis showed clusters of individuals (shared genotypes) spatially restricted for managed stands (significant in Pop 3), whereas a random spatial distribution characterized control forests. Therefore, it is possible that management affected and disrupted the genetic structure. The different genetic patterns revealed for each population call for site-by-site interpretation. Differential intensity and frequency of management practices, presence/absence of livestock in the forest, and evolutionary history may all have had combined effect on current genetic diversity. EEA Bariloche Fil: Soliani, Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Vendramin, Giovanni Giuseppe. National Research CouncilDivision of Florence. Institute of Biosciences and BioResources; Italia Fil: Gallo, Leonardo Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina Fil: Marchelli, Paula. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2017-09-25T15:39:23Z 2017-09-25T15:39:23Z 2016 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:ar-repo/semantics/artículo http://hdl.handle.net/20.500.12123/1316 http://www.sciencedirect.com/science/article/pii/S0378112716301918 0378-1127 https://doi.org/10.1016/j.foreco.2016.04.032 eng info:eu-repo/semantics/restrictedAccess application/pdf Forest ecology and management 373 : 81-92. (August 2016) |
| spellingShingle | Producción Forestal Nothofagus Pumilio Variación Genética Aprovechamiento de la Madera Microsatélites Forestry Production Genetic Variation Logging Microsatellites Soliani, Carolina Gallo, Leonardo Ariel Marchelli, Paula Vendramin, Giovanni Giuseppe Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio |
| title | Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio |
| title_full | Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio |
| title_fullStr | Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio |
| title_full_unstemmed | Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio |
| title_short | Logging by selective extraction of best trees: Does it change patterns of genetic diversity? : The case of Nothofagus pumilio |
| title_sort | logging by selective extraction of best trees does it change patterns of genetic diversity the case of nothofagus pumilio |
| topic | Producción Forestal Nothofagus Pumilio Variación Genética Aprovechamiento de la Madera Microsatélites Forestry Production Genetic Variation Logging Microsatellites |
| url | http://hdl.handle.net/20.500.12123/1316 http://www.sciencedirect.com/science/article/pii/S0378112716301918 https://doi.org/10.1016/j.foreco.2016.04.032 |
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