DOI: 10.1016/j.tree.2015.03.005
论文题名: Feedbacks and landscape-level vegetation dynamics
作者: Bowman D.M.J.S. ; Perry G.L.W. ; Marston J.B.
刊名: Trends in Ecology and Evolution
ISSN: 1695347
出版年: 2015
卷: 30, 期: 5 起始页码: 255
结束页码: 260
语种: 英语
英文关键词: Causality
; Ecosystem dynamics
; Explanation
; Feedbacks
; Fire
; Landscape ecology
; Macroecology
; Megafauna
; Modelling
; Savanna boundary
Scopus关键词: climate feedback
; evolutionary theory
; forest ecosystem
; macroecology
; mammal
; vegetation dynamics
; Mammalia
; animal
; ecosystem
; feedback system
; fire
; forest
; herbivory
; mammal
; species extinction
; theoretical model
; Animals
; Ecosystem
; Extinction, Biological
; Feedback
; Fires
; Forests
; Herbivory
; Mammals
; Models, Theoretical
英文摘要: Alternative stable-state theory (ASS) is widely accepted as explaining landscape-level vegetation dynamics, such as switches between forest and grassland. This theory argues that webs of feedbacks stabilise vegetation composition and structure, and that abrupt state shifts can occur if stabilising feedbacks are weakened. However, it is difficult to identify stabilising feedback loops and the disturbance thresholds beyond which state changes occur. Here, we argue that doing this requires a synthetic approach blending observation, experimentation, simulation, conceptual models, and narratives. Using forest boundaries and large mammal extinctions, we illustrate how a multifaceted research program can advance understanding of feedback-driven ecosystem change. Our integrative approach has applicability to other complex macroecological systems controlled by numerous feedbacks where controlled experimentation is impossible. © 2015 Published by Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/67177
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: School of Biological Sciences, University of Tasmania, Hobart, TAS, Australia; School of Environment, University of Auckland, Private Bag 92019, Auckland, New Zealand; School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand; Department of Physics, Brown University, Providence, RI, United States
Recommended Citation:
Bowman D.M.J.S.,Perry G.L.W.,Marston J.B.. Feedbacks and landscape-level vegetation dynamics[J]. Trends in Ecology and Evolution,2015-01-01,30(5)