Does Rhododendron maximum L. (Ericaceae) Reduce the Availability of Resources Above and Belowground for Canopy Tree Seedlings?

@inproceedings{Nilsen2001DoesRM,
  title={Does Rhododendron maximum L. (Ericaceae) Reduce the Availability of Resources Above and Belowground for Canopy Tree Seedlings?},
  author={E. Nilsen and B. Clinton and T. Lei and O. K. Miller and S. Semones and J. Walker},
  year={2001}
}
Abstract Subcanopy shrubs and perennial herbs inhibit recruitment of canopy trees in forests around the world. Although this phenomenon is widespread, and can have significant effects on community dynamics, the mechanisms of inhibition are not well understood. In the southern Appalachian region, Rhododendron maximum inhibits the recruitment of canopy trees in forests of northern red oak (Quercus rubra). We have shown, in previous research, that processes occurring before canopy tree seed… Expand
Effects of Rhododendron maximum Thickets on Tree Seed Dispersal, Seedling Morphology, and Survivorship
TLDR
There was no significant effect of R. maximum on seed reaching the forest floor for Acer rubrum, Liriodendron tulipifera, Quercus rubra, quercus prinus, Carya spp. Expand
Density Effects of a Dominant Understory Herb, Isoglossa woodii (Acanthaceae), on Tree Seedlings of a Subtropical Coastal Dune Forest
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While tree species showed no hierarchy of competitive ability their seedlings exhibited equivalent responses to competition from an understory dominant, permitting species coexistence and the maintenance of species diversity. Expand
Investigating the Allelopathic Potential of Kalmia latifolia L. (Ericaceae)
TLDR
It is suggested that allelopathy is not a strong mechanism in the inhibition of canopy tree recruitment by K. latifolia, an important component of southern Appalachian forest understories. Expand
Herbaceous-layer diversity and tree seedling recruitment are enhanced following Rhododendron maximum shrub removal
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Soil microbial response to Rhododendron understory removal in southern Appalachian forests: Effects on extracellular enzymes
Abstract Rhododendron maximum is a native evergreen shrub that has expanded in Appalachian forests following declines of american chestnut (Castanea dentata) and eastern hemlock (Tsuga canadensis).Expand
The influence of the monocarpic herb, Isoglossa woodii, on subtropical forest tree dynamics and diversity.
Dominant understorey species, such as herbs, ferns, palms and shrubs may influence forest tree species diversity and dynamics. Their influence may be through shading the forest floor, therebyExpand
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The competitive response of these seedlings to low irradiance reiterates the notion of phenotypic clustering at the seedling stage amongst shade tolerant tree species, which promotes seedling persistence and gradual transition into the tree layer. Expand
Carbon limitation leads to suppression of first year oak seedlings beneath evergreen understory shrubs in Southern Appalachian hardwood forests
TLDR
The results support the inhibition model of shade-mediated carbon limitation beneath dense understory shrubs and indicate the potential importance of herbivory and aluminum toxicity as components of a suppression mechanism beneath R. maximum thickets. Expand
The mechanisms used by the invasive shrub Rhododendron ponticum to inhibit the growth of surrounding vegetation
TLDR
It is demonstrated that light availability, temperature, water availability, organic matter and soil pH were all different beneath stands of R. ponticum, and that the inhibition of growth of the native species is due to a complex combination of biotic and abiotic factors. Expand
Lack of forest tree seedling recruitment and enhanced tree and shrub growth characterizes post-Tsuga canadensis mortality forests in the southern Appalachians
Abstract The loss of Tsuga canadensis from invasion by hemlock woolly adelgid (Adelges tsugae, HWA) has altered ecosystem structure and function in forests across the eastern United States. InExpand
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Litter can have an allelopathy effect on seed germination and root elongation of bioassay species as well as some ectomycorrhizal species, however, this allelopathic affect is not manifest in field sites and is not likely to be an important cause for the inhibition of seedling survival within thickets of R.m. sites. Expand
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Thickets of Rhododendronmaximum (Ericaceae) (Rm) in the southern Appalachians severely limit regeneration of hardwood and coniferous seedlings, and mycorrhizal parameters were correlated with some growth parameters only for hemlock Seedlings, but did not explain most of the variation observed. Expand
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