DOI: 10.1016/j.foreco.2017.02.003
Scopus记录号: 2-s2.0-85013158368
论文题名: How does disturbance affect the intensity and importance of plant competition along resource gradients?
作者: Laurent L. ; Mårell A. ; Korboulewsky N. ; Saïd S. ; Balandier P.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 391 起始页码: 239
结束页码: 245
语种: 英语
英文关键词: Browsing
; Capreolus capreolus
; Competition index
; Plant-plant interactions
; Quercus petraea
; Rubus sect. fruticosi
; Seedling recruitment
Scopus关键词: Population statistics
; Browsing
; Capreolus capreolus
; Competition index
; Plant interactions
; Quercus petraea
; Rubus sect. fruticosi
; Seedling recruitment
; Forestry
; browsing
; deciduous tree
; deer
; defoliation
; demography
; experimental study
; interspecific competition
; physical disturbance
; recruitment (population dynamics)
; resource availability
; seedling establishment
; shrub
; Capreolus
; Capreolus capreolus
; Cervidae
; Quercus petraea
; Rubus
英文摘要: Ecologists have long argued about the modification of plant competition along abiotic gradients, and particularly along resource gradients. Through simulations, we evaluated the impact of bramble defoliation by roe deer on the response of oak seedlings to bramble presence along two resource gradients. We set up a controlled experiment crossing: (i) two light availabilities (10% and 30% incident radiation), (ii) two water regimes (normal rainfall and a reduced water regime) and (iii) three bramble defoliation modes (non-defoliated brambles, brambles defoliated in June and brambles defoliated in late July). Control plots contained no brambles. We found that, the intensity of the competition remained constant along the gradients, while the importance of the competition significantly increased with increasing resource availability. Our results further show that bramble defoliation causes a significant decrease in both competition intensity and importance and that the effect depends on both the demographic parameter and the defoliation period. Furthermore, defoliation did not change the patterns of competition intensity and importance along the resource gradients. We emphasize the importance of considering both disturbances, such as deer defoliation, and various demographic parameters related to plant phenology and plant response dynamics in the characterization of plant-plant interactions. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64437
Appears in Collections: 影响、适应和脆弱性
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作者单位: Institut national de Recherche en Sciences et technologies pour l'Environnement et l'Agriculture, UR EFNO, Nogent-Sur-Vernisson, France; Office National de la Chasse et de la Faune Sauvage, Direction Recherche et Expertises, Unité Cervidés-Sanglier, “Montfort”, Birieux, France
Recommended Citation:
Laurent L.,Mårell A.,Korboulewsky N.,et al. How does disturbance affect the intensity and importance of plant competition along resource gradients?[J]. Forest Ecology and Management,2017-01-01,391