DOI: 10.1016/j.foreco.2016.12.012
Scopus记录号: 2-s2.0-85008428183
论文题名: Resilience to drought in a dry forest: Insights from demographic rates
作者: Madrigal-González J. ; Herrero A. ; Ruiz-Benito P. ; Zavala M.A.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 389 起始页码: 167
结束页码: 175
语种: 英语
英文关键词: Demographic compensation
; Ecosystem functioning
; Extreme climatic events
; Forest dynamics
; Forest management
; Vulnerability
Scopus关键词: Drought
; Dynamics
; Global warming
; Population dynamics
; Population statistics
; Climatic events
; Compensation effects
; Comprehensive assessment
; Ecosystem functioning
; Forest dynamics
; Forest vulnerability
; Simultaneous estimation
; Vulnerability
; Forestry
; Pinus pinaster
英文摘要: Concern is rising on whether forest function and structure will recover from drought-related impacts, which are expected to increase under global warming. Understanding demographic mechanisms underlying resilience (i.e. capacity of a system or individual to restore its structure and function prior to a disturbance) is critical for properly assessing forest vulnerability to drought. The simultaneous estimation of resilience of the main demographic rates governing tree population dynamics (growth, recruitment and survival) allows for a comprehensive assessment of forest response capacity. We evaluate the resilience of a large Pinus pinaster forest (approx. 7500 ha) in Southern Europe to one of the driest decades of the last 70 years (i.e. 1942–52). As forest structure and management influence demographic rates, their effects were removed prior to calculating resilience values for growth, recruitment and survival. The extremely dry conditions negatively impacted tree growth and recruitment during drought and slightly decreased survival in the decade after drought. Resilience values were mostly high, despite some low values for recruitment or survival in some forest sections, which indicate a general recovery of growth and recruitment and an absence of widespread reductions in survival after drought. A joint analysis of the Demographic Resilience Index (calculated by combining growth, recruitment and survival resilience; DRI) and resilience values of each rate allows to detect demographic compensation effects. High DRI values, even in sections where resilience in recruitment or survival was low, indicate that low resilience values in a given rate were compensated by high resilience in the remaining rates. Recorded resilience could allow the long-term persistence of the studied forest, although increased frequency and intensity of droughts might exceed the critical threshold of system's resilience. Our approach provides a step toward an exhaustive resilience assessment; however, further research should consider potential resilience thresholds arising from more complex non-linear dynamics. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64498
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Forest Ecology and Restoration Group, Department of Life Sciences, Universidad de Alcalá, Alcalá de Henares, Spain; School of Forestry, Northern Arizona University, Flagstaff, AZ, United States; Department of Plant Biology and Ecology, Faculty of Science and Technology, University of Basque Country, Leioa, Basque Country, Spain; Biological and Environmental Sciences, School of Natural Sciences, University of Stirling, Stirling, United Kingdom
Recommended Citation:
Madrigal-González J.,Herrero A.,Ruiz-Benito P.,et al. Resilience to drought in a dry forest: Insights from demographic rates[J]. Forest Ecology and Management,2017-01-01,389