DOI: 10.1016/j.foreco.2016.05.014
Scopus记录号: 2-s2.0-84968739472
论文题名: Oak stump-sprout vigor and Armillaria infection after clearcutting in southeastern Missouri, USA
作者: Lee C.A. ; Dey D.C. ; Muzika R.-M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2016
卷: 374 起始页码: 211
结束页码: 219
语种: 英语
英文关键词: Compartmentalization
; Disease management
; Infection
; Regeneration
; Root disease
; Sprout competition
; Tree vigor
Scopus关键词: Ecology
; Harvesting
; Random processes
; Reforestation
; Regression analysis
; Compartmentalization
; Disease management
; Infection
; Regeneration
; Root disease
; Tree vigor
; Forestry
; clearcutting
; compartmentalization
; coppice
; disease control
; evergreen tree
; fungus
; host-pathogen interaction
; infectious disease
; regeneration
; regression analysis
; resprouting
; root system
; self thinning
; vigor
; Missouri
; United States
; Armillaria
英文摘要: Armillaria spp. occur widely in Missouri mixed-oak ecosystems. In order to better understand the ecology and management of this pathogen and its effects on oak coppice, we observed a transect of 150 stumps after clearcutting in southeastern Missouri, noting Armillaria infection and oak sprout demography one year and seven years after harvest. Additionally, we visited a 50-year-old clearcut in the same area to sample oak root systems of stump-sprout origin for comparison with the seven-year-old clearcut. One year after harvest, 55% of stumps supported Armillaria infections, while 62% of stumps were infected after seven years. In the 50-year-old clearcut, 21% of examined root systems were infected. Logistic regression analysis of the younger clearcut related likelihood of infection to tree age at time of harvest. Whereas Armillaria infection displayed weak to absent relationships with numbers of sprouts surviving over time, dominant sprout height and diameter on individual stumps-proxies for stump vigor-were positively associated with numbers of survivors. These measures of vigor also had more influence over the magnitude and development of sproutless gaps around the circumference of the stump than did Armillaria infection. Moreover, the random effect of the individual tree on the development of such gaps was large. These results point to an important role for individual stump vigor in regulating sprout self-thinning rates, potentially through compartmentalization of invading Armillaria. © 2016. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64859
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forestry, School of Natural Resources, 203 ABNR Building, Columbia, MO, United States; USDA Forest Service, Northern Research Station, 202 ABNR Building, Columbia, MO, United States
Recommended Citation:
Lee C.A.,Dey D.C.,Muzika R.-M.. Oak stump-sprout vigor and Armillaria infection after clearcutting in southeastern Missouri, USA[J]. Forest Ecology and Management,2016-01-01,374