DOI: 10.1016/j.foreco.2013.05.003
Scopus记录号: 2-s2.0-84878462196
论文题名: Which are the factors controlling tree seedling establishment in North Italian floodplain forests invaded by non-native tree species?
作者: Terwei A. ; Zerbe S. ; Zeileis A. ; Annighöfer P. ; Kawaletz H. ; Mölder I. ; Ammer C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 304 起始页码: 192
结束页码: 203
语种: 英语
英文关键词: Hurdle negative binomial model
; Natural forest regeneration
; Non-metric multidimensional scaling
; Prunus serotina Ehrh.
; Robinia pseudoacacia L.
; Woody invaders
Scopus关键词: Natural forest regenerations
; Negative binomial models
; Non-metric multidimensional scaling
; Prunus serotina Ehrh
; Robinia pseudoacacia L
; Woody invaders
; Banks (bodies of water)
; Floods
; Geologic models
; Soils
; Reforestation
; adaptation
; biological invasion
; canopy
; coniferous tree
; disturbance
; ecological modeling
; environmental factor
; floodplain
; forest ecosystem
; humidity
; invasive species
; regeneration
; resource availability
; seedling establishment
; shade tolerance
; succession
; Italy
; Po Plain
; Carpinus betulus
; Prunus
; Prunus serotina
; Quercus robur
; Robinia pseudoacacia
; Ulmus
; Ulmus minor
英文摘要: In hardwood floodplain forests of the North Italian Po Plain the non-native and light-demanding tree species Prunus serotina Ehrh. and Robinia pseudoacacia L. coexist with the native tree species Carpinus betulus L., Quercus robur L., and Ulmus minor Mill. In order to identify the factors controlling the establishment of seedlings of these species, we focused on the scale of micro-plots, which provide safe sites for tree species regeneration. We used seedling and sapling counts as the response variable. For modelling the seedling regeneration in relation to a multivariate set of 15 measured soil and stand characteristics, a hurdle negative binomial model was applied and then compared with a non-metric multidimensional scaling ordination, visualising the relationships between the regenerating species and the environmental parameters. In general, it could be shown that there are species-specific differences in the requirements for seedling regeneration between the five target species, and that the most important parameters affecting seedling establishment were the availability of potential seed sources, soil humidity, and light availability. Q. robur and C. betulus showed a wide ecological range regarding soil humidity, whereas U. minor was restricted to moister soils, and the two non-native species only occurred on dry soils. In addition, R. pseudoacacia and Q. robur regenerated very scarcely under the closed canopy inside the stands and were highly dependent on large scale disturbance events. After a disturbance, the presence of R. pseudoacacia in the canopy promoted the seedling regeneration of Q. robur. P. serotina was found to regenerate frequently in the closed forest and to persist for a long time under shade, but also needs forest gaps to establish in the canopy. We believe that P. serotina was wrongly classified as a shade-intolerant species in the past. We suggest that it is a competitive invader in a broad range of resource availability. In conclusion, with regard to the further forest development, it could be assumed that the absence of disturbance events resulting in large openings leads to a reduction in the number of P. serotina, R. pseudoacacia, and Q. robur individuals during succession. Nevertheless, disturbances on wetter soils, e.g. related to the natural river dynamics, will clearly favour the seedling regeneration of Q. robur compared to the non-native species, which are generally limited to the drier sites of the floodplain forests. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66479
Appears in Collections: 影响、适应和脆弱性
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作者单位: Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, I-39100 Bolzano, Italy; Department of Statistics, Faculty of Economics and Statistics, University of Innsbruck, Universitätsstraße 15, A-6020 Innsbruck, Austria; Department of Silviculture and Forest Ecology of the Temperate Zones, University of Göttingen, Büsgenweg 1, D-37077 Göttingen, Germany; Energieagentur Region Göttingen e.V., Berliner Straße 2, D-37073 Göttingen, Germany
Recommended Citation:
Terwei A.,Zerbe S.,Zeileis A.,et al. Which are the factors controlling tree seedling establishment in North Italian floodplain forests invaded by non-native tree species?[J]. Forest Ecology and Management,2013-01-01,304