DOI: 10.1016/j.foreco.2014.06.037
Scopus记录号: 2-s2.0-84906889648
论文题名: Disentangling drivers of tree population size distributions
作者: Peltzer D.A. ; Allen R.B. ; Bellingham P.J. ; Richardson S.J. ; Wright E.F. ; Knightbridge P.I. ; Mason N.W.H.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 331 起始页码: 165
结束页码: 179
语种: 英语
英文关键词: Biological invasion
; Disturbance
; Herbivory
; Permanent forest plots
; Plant functional traits
; Size-class distributions
Scopus关键词: Animals
; Climate models
; Ecosystems
; Plants (botany)
; Population distribution
; Population statistics
; Biological invasion
; Disturbance
; Forest plots
; Functional traits
; Herbivory
; Size-class distributions
; Class distributions
; Forestry
; anthropogenic effect
; biological invasion
; forest ecosystem
; forest management
; herbivory
; long-term change
; size distribution
; ungulate
; Animals
; Biological Populations
; Climates
; Forestry
; Plants
; New Zealand
英文摘要: There are pressing needs to evaluate and manage the effects of biological invaders in forest ecosystems in the face of long-term changes and anthropogenic influences on these systems. Hence, disentangling the effects of different drivers is critical for understanding the relative importance of biological invaders on shaping future forest structure and composition, and how management of these invaders changes forest ecosystem functioning. We evaluated the effects of major drivers of changes in tree population structure in New Zealand forests using a national grid of permanent vegetation plots and long-term (>15. year) ungulate exclosures. The long-term effects of disturbance and other drivers leave imprints in tree population dynamics and size class structure. For example, the effects of natural disturbance are expected to have different effects from those of browsing or folivorous animals. We quantified variation in tree size class distributions for common tree species, and plant functional groups defined by mammal diet selection, in 986 permanent forest plots and in 88 paired ungulate exclosure and control plots. Our analyses revealed that: (i) strong changes in size class distributions have occurred in recent decades, (ii) tree species selected or preferred by invasive ungulates (primarily red deer) demonstrate particularly strong shifts, (iii) inclusion of climate or soil variables into statistical models of exclosure effects on size class distributions were overwhelmed by temporal changes and effects of forest stand successional stage. These findings demonstrate that the effects of invasive herbivores can be distinguishable from other drivers such as disturbance or successional stage, and suggests that these changes will ultimately be manifested in altered forest community composition and ecosystem processes. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65738
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Landcare Research, P.O. Box 69040, Lincoln 7640, New Zealand; Department of Conservation, P.O. Box 13049, Christchurch 8141, New Zealand; Department of Conservation, Private Bag 701, Hokitika 7842, New Zealand; Landcare Research, Private Bag 3127, Hamilton 3240, New Zealand
Recommended Citation:
Peltzer D.A.,Allen R.B.,Bellingham P.J.,et al. Disentangling drivers of tree population size distributions[J]. Forest Ecology and Management,2014-01-01,331