DOI: 10.1016/j.foreco.2013.01.031
Scopus记录号: 2-s2.0-84874508689
论文题名: Influence of leaf phenology and site nitrogen on invasive species establishment in temperate deciduous forest understories
作者: Dreiss L.M. ; Volin J.C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 296 起始页码: 1
结束页码: 8
语种: 英语
英文关键词: Canopy light transmission
; Invasive species
; Phenology
; Robinia pseudoacacia
; Soil nitrate
Scopus关键词: Acer saccharum
; Black locust
; Canopy species
; Canopy transmission
; Canopy trees
; Ecosystem structure
; Environmental conditions
; Evergreen species
; Forest stand
; Forest understory
; Forested landscapes
; Fraxinus
; Human disturbances
; Invasive plants
; Invasive species
; Landscape fragmentation
; Leaf phenology
; Native forests
; Nitrate levels
; Non-native species
; Phenology
; Pinus spp
; Populus tremuloides
; Quaking aspens
; Quercus spp
; Relative abundance
; Resource availability
; Robinia pseudo-acacia
; Soil analysis
; Sugar maple
; Temperate deciduous forest
; Temperate forests
; Tsuga canadensis
; Understory light
; Ecosystems
; Leaf springs
; Light transmission
; Nitrates
; Nitrogen fixation
; Nutrients
; Phenols
; Plants (botany)
; Soils
; Sugars
; Forestry
; ash
; biological invasion
; colonization
; coniferous tree
; deciduous forest
; ecosystem structure
; environmental conditions
; evergreen tree
; habitat conservation
; habitat fragmentation
; human activity
; invasive species
; legume
; light availability
; nitrate
; nitrogen
; nitrogen fixation
; nutrient limitation
; phenology
; resource availability
; stand structure
; temperate environment
; understory
; Ecosystems
; Forest Canopy
; Leaves
; Nitrates
; Nitrogen
; Nutrients
; Phenology
; Robinia
; Soil
; Species Identification
; Transmittance
英文摘要: Invasion by nonnative species is considered one of the greatest threats to ecosystem structure and function worldwide. Human disturbance and landscape fragmentation create edge habitats that are often higher in resource (i.e., light and nutrient) availability and are noted for having a high degree of invasive species establishment and colonization. In contrast, interior forest understories, which are often light- and nutrient-limited, are typically less susceptible to invasion. We assessed invasive species presence in interior, intact, temperate forest understories in relation to canopy-induced environmental conditions. We hypothesized that nonnative invasive species presence would be greatest under those canopy tree species that allow higher understory light and/or soil nitrate levels as a result of inherent differences in canopy transmission, spring leaf phenology, and nitrogen fixation. Five native forest canopy types were used, Populus tremuloides (quaking aspen), Acer saccharum (sugar maple), Quercus spp./. Carya spp. (oak/hickory), Fraxinus americana (white ash), evergreen species mix Pinus spp./. Tsuga canadensis (pine/hemlock), along with one nonnative canopy species, Robinia pseudoacacia (black locust). Measures of understory light availability post leaf-expansion were significantly higher under quaking aspen than other canopies with the exception of black locust and white ash. Canopy bud break and leaf flush occurred first in quaking aspen stands followed by sugar maple, oak/hickory, white ash and black locust stands, respectively. As expected, soil analyses showed higher nitrate levels in the nitrogen-fixing black locust stands, but unexpectedly, also in the white ash stands. Under these two canopy types, invasive species cover and relative abundance were significantly higher suggesting the importance of greater resource availability in invasive plant success. As such, intact forest stands with greater light transmission, later phenology, and nitrate fixation act as islands of invasion in resource-limited forested landscapes. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66652
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Department of Natural Resources and the Environment, University of Connecticut, Storrs, CT 06269-4087, United States
Recommended Citation:
Dreiss L.M.,Volin J.C.. Influence of leaf phenology and site nitrogen on invasive species establishment in temperate deciduous forest understories[J]. Forest Ecology and Management,2013-01-01,296