气候变化领域集成服务门户(CCPortal): Impacts of thinning treatments on dynamics of needle disease caused by Elytroderma deformans (Weir) Darker and interactions with bark beetle-attacks in the northern Rocky Mountains

CCPortal

DOI	10.1016/j.foreco.2020.118654
	Impacts of thinning treatments on dynamics of needle disease caused by Elytroderma deformans (Weir) Darker and interactions with bark beetle-attacks in the northern Rocky Mountains
	Smirnova E.; Bennett P.; Egan J.; Kalachev L.; Goodburn J.; Lockman I.B.; Hartless C.
发表日期	2021
ISSN	0378-1127
卷号	480
英文摘要	The fungus Elytroderma deformans causes a serious needle disease of pines in western North America and is considered the most important needle disease of ponderosa pine in Montana. While important, there has been limited evaluation of pre-commercial thinning or other treatments on disease incidence. Our study assessed the efficacy of various silvicultural treatments to reduce impacts from Elytroderma disease within monitoring plots that were established in 2004 and surveyed until 2014. Treatments were randomly assigned through incomplete block design to: (1) thin to 3.7 × 3.7 m spacing; (2) thin to 5.5 × 5.5 m spacing; (3) thin to 3.7 × 3.7 m spacing plus pruning; and (4) control with no thinning or pruning. For assessment, a statistic was developed to represent the average change in Elytroderma presence that occurred from 2006 to 2014 for each plot. This statistic was utilized as the response variable in a model that controlled for initial Elytroderma occurrence within plots to test for treatment effects. Overall, Elytroderma intensified across all plots during the study period and treatments were not effective at preventing new infections. Plots that received the 3.7 m × 3.7 m residual spacing exhibited slightly reduced progression of disease incidence relative to the other treatments. A mountain pine beetle (Dendroctonus ponderosae Hopkins, MPB) eruption occurred during this study. Tree-level MPB and Elytroderma interactions were assessed and no evidence was found to indicate trees infected with Elytroderma had a different likelihood of being attacked by MPB relative to uninfected trees. However, the trees located in plots with high levels of initial Elytroderma disease presence had greater chances of having tree mortality in general, caused by MPB or other factors. MPB did not attack any trees in plots that had the 5.5 × 5.5 m spaced treatment, even where adjacent plots were attacked. Results of this study are presented to inform management of young ponderosa pine forests on impacts of the silvicultural techniques tested on post-treatment Elytroderma dynamics and interactions with MPB-attack. © 2020 Elsevier B.V.
英文关键词	Elytroderma crown infections; Elytroderma needle disease; Montana; Mountain pine beetle; Ponderosa pine; Pre-commercial thinning
语种	英语
scopus关键词	Forestry; Needles; Dendroctonus ponderosae; Incomplete block designs; Mountain pine beetle; Northern Rocky Mountains; Ponderosa pine forest; Pre-commercial thinning; Silvicultural technique; Silvicultural treatments; Diseases; beetle; coniferous tree; disease incidence; disease treatment; fungal disease; fungus; mortality; thinning; Diseases; Forestry; Needles; Pinus Ponderosa; Processing; Spacing; Thinning; Trees; Montana; Rocky Mountains; United States; Coleoptera; Dendroctonus ponderosae; Elytroderma; Elytroderma deformans; Fungi; Pinus mugo; Scolytinae
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154836
作者单位	Department of Biostatistics, Virginia Commonwealth University, Box 980032, Richmond, VA 23298, United States; USDA Forest Service, Northern and Intermountain Regions, State and Private Forestry, Forest Health Protection, 26 Fort Missoula Rd., Missoula, MT 59804, United States; Department of Mathematical Sciences, University of Montana, 32 Campus Dr, Missoula, MT 59812, United States; W.A. Franke College of Forestry & Conservation, University of Montana, 32 Campus Dr, Missoula, MT 59812, United States; USDA Forest Service, Pacific Northwest Region, 1220 SW 3rd Ave, Portland, OR 97204, United States; USDA Forest Service, Northern Region, Bitterroot National Forest, 88 Main St., Stevensville, MT 59870, United States
推荐引用方式 GB/T 7714	Smirnova E.,Bennett P.,Egan J.,et al. Impacts of thinning treatments on dynamics of needle disease caused by Elytroderma deformans (Weir) Darker and interactions with bark beetle-attacks in the northern Rocky Mountains[J],2021,480.
APA	Smirnova E..,Bennett P..,Egan J..,Kalachev L..,Goodburn J..,...&Hartless C..(2021).Impacts of thinning treatments on dynamics of needle disease caused by Elytroderma deformans (Weir) Darker and interactions with bark beetle-attacks in the northern Rocky Mountains.Forest Ecology and Management,480.
MLA	Smirnova E.,et al."Impacts of thinning treatments on dynamics of needle disease caused by Elytroderma deformans (Weir) Darker and interactions with bark beetle-attacks in the northern Rocky Mountains".Forest Ecology and Management 480(2021).