DOI: 10.1016/j.foreco.2017.06.052
Scopus记录号: 2-s2.0-85022026609
论文题名: Importance of structure for species richness and tree species regeneration niches in old-growth Patagonian swamp forests
作者: Bannister J.R. ; Kremer K. ; Carrasco-Farías N. ; Galindo N.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 401 起始页码: 33
结束页码: 44
语种: 英语
英文关键词: Arboreal soils
; Chile
; Forested wetlands
; Management implications
; Regeneration niches
; Tepualia stipularis
Scopus关键词: Complex networks
; Forestry
; Information management
; Reforestation
; Wetlands
; Chile
; Forested wetlands
; Management implications
; Regeneration niches
; Tepualia stipularis
; Ecology
; Chilo
; Tepualia stipularis
英文摘要: Swamp forests have high ecological value and significantly contribute to the productivity of the zones in which they are located because they provide important ecosystem benefits to society. Tepualia stipularis-dominated swamp forests, also called tepuales, are the most common but endangered swamp forests in Patagonia. In these forests, T. stipularis develops very complex structures and accumulates large amounts of biomass due to its horizontal growth habit, which leads to the formation of arboreal soils and nearly impenetrable networks of trunks. Here, we hypothesize that the complex structure of old-growth T. stipularis-dominated forests influences species abundance and the regeneration niches of the different tree species that grow in them. In addition, in these forests with restricted drainage, elevated microsites facilitate the development of regeneration. Using pre-harvesting inventory data from two silvicultural experiments in T. stipularis-dominated forests of Chiloé Island, North Patagonia, we aim to (a) characterize the structure and composition of old-growth, undisturbed stands, (b) evaluate how their structure influences the regeneration niches of the main tree species, and (c) explain the implications of these findings in the context of the traditional silvicultural management of these forests. Our results show for the first time that these forests present low anthropogenic influence (no exotic species) and contain high tree-species richness, which exceeds that of several old-growth swamp forests around the world. Also, their characteristic gap-phase dynamics and complex structures influence the regeneration niches of different coexisting tree species, which mostly germinate and establish on trunks. In this context, silvicultural methods that maintain a continuous cover should be encouraged to increase the ability of different species to reorganize and adapt to new conditions. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64171
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Instituto Forestal, Oficina Chiloé, Nercón S/N, Castro, Chile; Chair of Silviculture, Institute of Forest Sciences, University of Freiburg, Germany; Helmholz Centre for Environmental Research – UFZ, Halle, Germany
Recommended Citation:
Bannister J.R.,Kremer K.,Carrasco-Farías N.,et al. Importance of structure for species richness and tree species regeneration niches in old-growth Patagonian swamp forests[J]. Forest Ecology and Management,2017-01-01,401