DOI: 10.1016/j.foreco.2012.09.032
Scopus记录号: 2-s2.0-84869876700
论文题名: Variable retention harvesting influences biotic and abiotic drivers of regeneration in Nothofagus pumilio southern Patagonian forests
作者: Martínez Pastur G.J. ; Soler Esteban R. ; Pulido F. ; Lencinas M.V.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 289 起始页码: 106
结束页码: 114
语种: 英语
英文关键词: Aggregated retention
; Dispersed retention
; Herbivory
; Nothofagus pumilio
; Regeneration cycle
; Seed predation
Scopus关键词: Aggregated retention
; Dispersed retention
; Herbivory
; Nothofagus
; Regeneration cycles
; Seed predation
; Aggregates
; Harvesting
; Reforestation
; deciduous forest
; environmental factor
; forest ecosystem
; fruit
; fruiting
; harvesting
; herbivory
; microclimate
; regeneration
; reproductive cycle
; reproductive potential
; seed predation
; seedling
; silviculture
; stand structure
; Aggregate
; Harvesting
; Nothofagus Pumilio
; Reforestation
; Retention
; Seeds
; Argentina
; Patagonia
; Hexapoda
; Nothofagus pumilio
; Rodentia
英文摘要: Understanding regeneration processes is important for implementing new silvicultural treatments that rely on natural regeneration from seed. Nevertheless, integrated, flower-to-sapling studies of the regeneration cycle evaluating the effect of management factors operating at each reproductive stage are scarce. We analyzed the influence of variable retention harvesting on the biotic and abiotic drivers of regeneration of Nothofagus pumilio forests of Southern Patagonia (Argentina). We quantified losses in reproductive potential caused by biotic and abiotic factors within the landscape mosaic generated by variable retention, including harvested stands with aggregated retention and dispersed retention, and in primary unharvested forests. Overall, pre-dispersal losses were caused by wind and insect predation acting on flowers and developing fruits, whereas post-dispersal losses resulted from stratification during winter, and impact of microclimate and rodent predation upon seeds. Dispersed retention areas modified the main drivers of regeneration as compared to aggregates and control areas. Flowering and fruiting was favored in the dispersed retention treatment, whereas seed and seedling survival were more successful in aggregates and control stands. Aggregates retained within harvested areas maintained most of reproductive processes of primary unharvested forests. The most critical step of the reproductive cycle is associated with the seedling stage to the extent that complete regeneration failure can occur in certain years independently of flower and seed crops. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66846
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Laboratorio de Recursos Forestales, CADIC-CONICET, Houssay 200, 9410 Ushuaia, Tierra del Fuego, Argentina; Grupo de Investigación Forestal, Escuela de Ingeniería Forestal y del Medio Natural, Universidad de Extremadura, E-10600 Plasencia, Cáceres, Spain
Recommended Citation:
Martínez Pastur G.J.,Soler Esteban R.,Pulido F.,et al. Variable retention harvesting influences biotic and abiotic drivers of regeneration in Nothofagus pumilio southern Patagonian forests[J]. Forest Ecology and Management,2013-01-01,289