DOI: 10.1016/j.foreco.2015.12.018
Scopus记录号: 2-s2.0-84951781610
论文题名: The effect of silvicultural management on the genetic diversity of a mixed Nothofagus forest in Lanín Natural Reserve, Argentina
作者: Sola G. ; El Mujtar V. ; Tsuda Y. ; Vendramin G.G. ; Gallo L.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 363 起始页码: 11
结束页码: 20
语种: 英语
英文关键词: Forest management
; Genetic variation
; Microsatellite markers
; Mixed forest
; Nothofagus
; Species composition
Scopus关键词: Biodiversity
; DNA sequences
; Genes
; Harvesting
; Natural resources management
; Reforestation
; Genetic variation
; Microsatellite markers
; Mixed forests
; Nothofagus
; Species composition
; Forestry
; Nothofagus
; Nothofagus dombeyi
; Nothofagus nervosa
; Nothofagus obliqua
英文摘要: Knowledge of the impact of forest management practices is crucial to allow the use of natural resources while ensuring the sustainability of genetic variation, which is essential for the potential adaptive capacity of forests. The main objective of this work was to study the effects of a seed cut on the genetic diversity of a mixed Nothofagus forest in northwestern Andean Patagonia. Silviculture based on the shelterwood system was carried out in stands composed of Nothofagus dombeyi, Nothofagus nervosa and Nothofagus obliqua, located in Lanín Natural Reserve (Neuquén province, Argentina). Through intensive sampling of pre (mature trees) and post (regeneration) harvest populations of all three species from a 3-ha plot established after 20. years of the silvicultural intervention, in combination with microsatellite genotyping (more than 2000 individuals with 15 markers), we determined that modification of relative abundance of species in the post-harvest population that followed the implemented management had altered the global genetic diversity of the mixed forest; however, no impact was detected at species level in the entire plot or in two subplots with different species proportions. Pollen and seed dispersal from the surrounding areas may have contributed significantly to maintaining both genetic diversity in the post-harvest natural regeneration and the low differentiation between this and the pre-harvest gene pool in all species. The use of species-specific markers allowed us to determine that the level of introgressive hybridization was not changed by management; however, further studies are required to evaluate whether this practice influences the directionality of introgression. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65082
Appears in Collections: 影响、适应和脆弱性
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作者单位: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; INTA, Unidad de Genética Ecológica y Mejoramiento Forestal, Bariloche, Argentina; Universidad Nacional del Comahue, Cátedra de Ordenación Forestal, Pasaje de La Paz 235, San Martín de los Andes, Neuquén, Argentina; Sugadaira Montane Research Center, University of Tsukuba, 1278-294 Sugadairakogen, Ueda, Nagano, Japan; Institute of Biosciences and Bioresources, Division of Florence, National Research Council, Sesto Fiorentino (FI), Italy
Recommended Citation:
Sola G.,El Mujtar V.,Tsuda Y.,et al. The effect of silvicultural management on the genetic diversity of a mixed Nothofagus forest in Lanín Natural Reserve, Argentina[J]. Forest Ecology and Management,2016-01-01,363