DOI: 10.1016/j.foreco.2013.04.018
Scopus记录号: 2-s2.0-84877793254
论文题名: The influence of ground disturbance and gap position on understory plant diversity in upland forests of southern New England
作者: Duguid M.C. ; Frey B.R. ; Ellum D.S. ; Kelty M. ; Ashton M.S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 303 起始页码: 148
结束页码: 159
语种: 英语
英文关键词: Evenness
; Forest harvesting
; Herbaceous
; Microsite
; Richness
; Soils
Scopus关键词: Evenness
; Forest harvesting
; Herbaceous
; Microsite
; Richness
; Ecosystems
; Glacial geology
; Managers
; Plants (botany)
; Soils
; Reforestation
; disturbance
; ecosystem function
; ecosystem resilience
; forest management
; gap dynamics
; harvesting
; herb
; nontimber forest product
; outwash
; regeneration
; silviculture
; soil type
; species diversity
; species evenness
; species richness
; temperate forest
; topography
; understory
; upland region
; wildlife management
; New England
; United States
英文摘要: The forest understory contains the majority of vascular plant diversity in eastern temperate forests, and its diversity, composition, and dynamics contribute directly to ecosystem function. Forest managers have traditionally viewed the understory as primarily affecting forest regeneration or wildlife habitat, but the growing recognition of goods and services the understory provides (e.g., ecosystem function, ecological resiliency, non-timber forest products) has increased concerns about the impacts of forest management on understory diversity. We monitored response of understory diversity to microsite position and degree of ground-level disturbance within experimental gaps for 10. years. We did this at four sites with distinct soil types and topographic positions of a glacial geology in southern New England that were categorized as (i) mesic, (ii) mid-slope, (iii) outwash, and (iv) sandy-skeletal. We analyzed differences in patterns of species richness, Shannon diversity, and evenness across sites and through time. Understory species richness was generally enhanced by gap formation. Gap position was the primary factor influencing species richness across all sites, but the patterns of diversity and evenness within gaps was site specific. Ground-disturbance was influential on drier sandy sites, and more pronounced earlier in the experiment. Temporal differences were also evident across sites, with richness stabilizing at all sites 10. years after gap creation. The one exception was the sandy-skeletal site, which was still increasing in richness. Resource managers interested in protecting and enhancing understory species diversity need to consider underlying site, specifically soil type when planning silvicultural treatments, as the response of the understory community to disturbance can vary greatly with site. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66520
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Yale School of Forestry and Environmental Studies, New Haven, CT, United States; Department of Forestry, Mississippi State University, Mississippi State, MS, United States; Environmental Studies Department, Warren Wilson College, Asheville, NC, United States; Department of Natural Resources Conservation, University of Massachusetts, Amherst, MA, United States
Recommended Citation:
Duguid M.C.,Frey B.R.,Ellum D.S.,et al. The influence of ground disturbance and gap position on understory plant diversity in upland forests of southern New England[J]. Forest Ecology and Management,2013-01-01,303