DOI: 10.1016/j.foreco.2016.02.028
Scopus记录号: 2-s2.0-84959279051
论文题名: A robust method to determine historical annual cone production among slow-growing conifers
作者: Redmond M.D. ; Weisberg P.J. ; Cobb N.S. ; Gehring C.A. ; Whipple A.V. ; Whitham T.G.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 368 起始页码: 1
结束页码: 6
语种: 英语
英文关键词: Cone abscission scar
; Cone scar
; Conifer
; Pinus
; Seed production
; Tree reproduction
Scopus关键词: Climate change
; Conifer
; Interannual variability
; Pinus
; Reproductive output
; Seed production
; Seedling recruitment
; Tree population
; Tree reproduction
; Forestry
; abscission
; climate effect
; coniferous tree
; forest ecosystem
; numerical method
; reproduction
; seed production
; woodland
; Coniferophyta
; Pinus edulis
英文摘要: Forest and woodland ecosystems may be strongly affected by climate change influences on tree population processes such as seed production and seedling recruitment. Yet climate effects on seed production are generally poorly understood, particularly for trees that exhibit masting behavior (i.e. high synchronicity and high inter-annual variability in seed production). This is largely due to the limited amount of long-term datasets on seed production, which are necessary to characterize the highly variable reproductive outputs of masting species. The cone abscission scar method provides a promising approach to accurately determine historical (past 10-20 years) annual cone production, but the method has not been rigorously validated. Here we use a long-term dataset of cone abundance on individually monitored pinyon pine (Pinus edulis) trees to validate the cone abscission scar methodology. Tree cone production estimated using abscission scars was positively associated with observed mature cone and conelet abundances from 8 to 13 years previously (Spearman's ρ = 0.52 and 0.66, respectively), the time period of our observed historical cone production data. Further, we show that between 4-5 branches per tree and 4-6 trees per site need to be sampled to minimize the variance in cone abundance estimates. Thus, only approximately 3-4 h are needed to obtain an estimate of historical annual cone production in a stand. Overall, we show that the cone abscission scar method provides a robust and time efficient approach to accurately determine historical annual cone production for P. edulis and likely other slow-growing conifer trees. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64984
Appears in Collections: 影响、适应和脆弱性
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作者单位: Ecology and Evolutionary Biology Department, University of Colorado, Boulder, CO, United States; Department of Natural Resources and Environmental Science, University of Nevada, Reno, NV, United States; Department of Biological Sciences and Merriam-Powell Center for Environmental Research, Northern Arizona University, Flagstaff, AZ, United States
Recommended Citation:
Redmond M.D.,Weisberg P.J.,Cobb N.S.,et al. A robust method to determine historical annual cone production among slow-growing conifers[J]. Forest Ecology and Management,2016-01-01,368