DOI: 10.1016/j.foreco.2013.04.027
Scopus记录号: 2-s2.0-84879516107
论文题名: Hydrochory and water induced germination enhance invasion of Fraxinus pennsylvanica
作者: Schmiedel D. ; Tackenberg O.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 304 起始页码: 437
结束页码: 443
语种: 英语
英文关键词: Buoyancy
; Green ash
; Hydrochory
; Secondary dispersal
; Wind dispersal
Scopus关键词: European Countries
; Floodplain forest
; Fraxinus excelsiors
; Germination rates
; Green ash
; Hydrochory
; Invasive species
; Secondary dispersal
; Banks (bodies of water)
; Buoyancy
; Cultivation
; Digital storage
; Floods
; Reforestation
; Seed
; anemochory
; buoyancy
; deciduous tree
; floodplain
; germination
; hydrochory
; wind forcing
; Central Europe
英文摘要: In many Central European countries Fraxinus pennsylvanica is an invasive species that spreads rapidly in floodplain forests. The aim of this study was to analyse anemochorous and hydrochorous dispersal distances and to compare the findings with dispersal data for the native Fraxinus excelsior. A simulation revealed that wind dispersal distances are similar for both species, reaching to 120-250. m. By contrast, the mean floating time (50% floating samaras) measured in an experiment was 2. days in the case of F. pennsylvanica and 0.5. days for F. excelsior. This high floating ability facilitates water dispersal over several kilometres in both species, but for the invasive species the modelled mean dispersal distance was 3.7 times higher. A germination test of F.pennsylvanica seeds revealed that the rate, onset and speed of germination increase with the duration of the inundation. After a maximum storage time in water of about 15. days the germination rate amounts to 78%, which was higher than the germination rate of seeds without storage in water (53%). We also found that regeneration was enhanced in flooded areas. Hydrochory, therefore, may be viewed as an important factor explaining the successful invasion of F. pennsylvanica in floodplain forests in Central Europe. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66492
Appears in Collections: 影响、适应和脆弱性
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作者单位: Institute of General Ecology and Environmental Protection, Technische Universität Dresden, Pienner Str. 7, 01737 Tharandt, Germany; Institute for Ecology, Evolution and Diversity, Goethe-Universität Frankfurt a.M., Max-von-Laue-Str. 13, 60438 Frankfurt am Main, Germany
Recommended Citation:
Schmiedel D.,Tackenberg O.. Hydrochory and water induced germination enhance invasion of Fraxinus pennsylvanica[J]. Forest Ecology and Management,2013-01-01,304