DOI: 10.1016/j.foreco.2013.10.006
Scopus记录号: 2-s2.0-84888133751
论文题名: Comparison of short term low, moderate, and high severity fire impacts to aquatic and terrestrial ecosystem components of a southern USA mixed pine/hardwood forest
作者: Brown D.J. ; Nowlin W.H. ; Ozel E. ; Mali I. ; Episcopo D. ; Jones M.C. ; Forstner M.R.J.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 312 起始页码: 179
结束页码: 192
语种: 英语
英文关键词: Arthropods
; Forest
; Prescribed fire
; Vegetation
; Water chemistry
; Wildfire
Scopus关键词: Arthropods
; Forest
; Prescribed fires
; Water chemistry
; Wildfire
; Aquatic ecosystems
; Ecology
; Fires
; Housing
; Vegetation
; Water quality
; Forestry
; anthropogenic effect
; aquatic ecosystem
; arthropod
; community composition
; forest fire
; forest management
; mixed forest
; prescribed burning
; terrestrial ecosystem
; understory
; wildfire
; Ecosystems
; Forest Fires
; Fuels
; Hardwoods
; Pinus
; Prescribed Burning
; Southern USA
; Water Quality
; United States
; Arthropoda
英文摘要: Historically fire was an important natural disturbance shaping the structure and composition of pine-dominated forests in the southern United States. Longstanding fire suppression policies have resulted in structural and compositional changes, notably accumulation of heavy fuel loads and reduction in vegetation species diversity. Primary goals of forest management through prescribed burning include fuel load reduction and mimicking ecosystem impacts of historically natural wildfires. In addition to the influences of fire frequency and season, the influence of fire severity on ecosystem responses is currently of interest. In this study we sought to quantify the impacts of low, moderate, and high severity fires, and their interaction with prior forest management practices, to several aquatic and terrestrial ecosystem components of a southern U.S. mixed pine/hardwood forest using a before-after, control-impact (BACI) approach. The ecosystem components we assessed were water quality, community composition of aquatic arthropods (wildfire impacts only), forest structure characteristics, community composition of understory vegetation, and community composition of ground-dwelling arthropods. We found that increasing fire severity increased aquatic nutrient levels and productivity, but the magnitude of effects increased with severity. Low and moderate severity fires had weak effects on forest structure characteristics, community composition of understory vegetation, and community composition of ground-dwelling arthropods in the initial years following burns. In contrast, high severity fires dramatically reduced fine and large fuel loads, increased diversity of understory vegetation, and influenced community composition of ground-dwelling arthropods. Further, wildfire severity was reduced in areas with a prior moderate severity prescribed burn, but not in areas with a prior low severity prescribed burn. Our results provide quantitative evidence for the role of fire severity as a primary factor influencing responses of ecosystems to fire, and indicate that forest management practices influence the impact of high severity fires on ecosystems. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66194
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Biology, Texas State University, 601 University Drive, San Marcos, TX 78666, United States; Department of Biology, Texas State University, Aquatic Station, San Marcos, TX 78666, United States
Recommended Citation:
Brown D.J.,Nowlin W.H.,Ozel E.,et al. Comparison of short term low, moderate, and high severity fire impacts to aquatic and terrestrial ecosystem components of a southern USA mixed pine/hardwood forest[J]. Forest Ecology and Management,2014-01-01,312