气候变化领域集成服务门户(CCPortal): Predictors of fire-tolerant oak and fire-sensitive hardwood distribution in a fire-maintained longleaf pine ecosystem

CCPortal

DOI	10.1016/j.foreco.2020.118468
	Predictors of fire-tolerant oak and fire-sensitive hardwood distribution in a fire-maintained longleaf pine ecosystem
	Hannon D.R.; Moorman C.E.; Schultz A.D.; Gray J.M.; DePerno C.S.
发表日期	2020
ISSN	0378-1127
卷号	477
英文摘要	The longleaf pine (Pinus palustris) ecosystem has been reduced to a fraction of its original extent, and where this ecosystem does occur, it is often degraded by hardwood encroachment. The reduction of hardwood tree cover is often a desirable longleaf pine community restoration outcome, though hardwood midstory and overstory trees have been recognized as an important natural component of the communities. Moreover, the appropriate amount of hardwood tree cover in a restored longleaf pine community is debated, as more hardwood tree cover can benefit mixed forest and mast-dependent wildlife (e.g., fox squirrels [Sciurus niger], white-tailed deer [Odocoileus virginianus]), and less hardwood tree cover is critical to the federally endangered red-cockaded woodpecker (Leuconotopicus borealis). To inform the debate, we assessed the environmental (e.g., topography, edaphic conditions, and pine basal area) and management (e.g., distance to firebreaks, prescribed fire history) factors that influenced abundance of upland hardwood trees in xeric longleaf pine communities on a site where frequent growing-season fire has been ongoing since 1991. We counted upland hardwoods ≥5 cm diameter at breast height (DBH) at 307 random field plots (0.04 ha) and categorized all hardwood trees as belonging to either a guild of fire-tolerant oaks or a guild of fire-sensitive hardwood species. We used generalized linear models (GLM) to determine the most important predictors of abundance for both guilds. The predictors of abundance differed between the two guilds, with fire-tolerant oak abundance increasing with greater slope and proximity to ignition sources and decreasing with greater pine basal area. Fire-sensitive hardwood abundance increased with mesic site conditions and decreased with the number of growing-season fires and greater pine basal area. Although seasonality in fire history was an important predictor of fire-sensitive hardwood abundance, variables related to long-term fire-history were not important predictors of fire-tolerant oak abundance in longleaf pine communities. However, with limited variation in fire return interval across the study area, our ability to draw inferences regarding the role of fire return interval was limited. Where hardwood encroachment is not a problem, and hardwood levels are below desired, balanced target levels, hardwood abundance in longleaf pine communities can be increased by reducing pine basal area and reducing prescribed fire intensity. © 2020 Elsevier B.V.
英文关键词	Ecological restoration; Fire-adapted hardwoods; Longleaf pine; Mast-dependent wildlife; Oaks; Pinus palustris; Prescribed fire; Quercus spp
语种	英语
scopus关键词	Ecosystems; Fires; Hardwoods; Restoration; Topography; Diameter-at-breast heights; Edaphic conditions; Fire return intervals; Generalized linear model; Longleaf pine ecosystems; Natural components; Red-cockaded woodpeckers; White-tailed deer; Forestry; abundance estimation; basal area; coniferous forest; diameter; fire history; mixed forest; overstory; prediction; seasonality; Ecosystems; Fires; Forestry; Hardwoods; Restoration; Topography; Odocoileus virginianus; Picoides borealis; Pinus palustris; Quercus; Sciurus niger
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/154978
作者单位	Fisheries, Wildlife, and Conservation Biology Program, Department of Forestry and Environmental Resources, North Carolina State University, 2800 Faucette Dr., Raleigh, NC 27695, United States; Wildlife Management Branch, Directorate of Public Works, Fort Bragg, NC 28310, United States; Center for Geospatial Analytics, North Carolina State University, 2800 Faucette Dr., Raleigh, NC 27695, United States
推荐引用方式 GB/T 7714	Hannon D.R.,Moorman C.E.,Schultz A.D.,et al. Predictors of fire-tolerant oak and fire-sensitive hardwood distribution in a fire-maintained longleaf pine ecosystem[J],2020,477.
APA	Hannon D.R.,Moorman C.E.,Schultz A.D.,Gray J.M.,&DePerno C.S..(2020).Predictors of fire-tolerant oak and fire-sensitive hardwood distribution in a fire-maintained longleaf pine ecosystem.Forest Ecology and Management,477.
MLA	Hannon D.R.,et al."Predictors of fire-tolerant oak and fire-sensitive hardwood distribution in a fire-maintained longleaf pine ecosystem".Forest Ecology and Management 477(2020).