Results 111 to 120 of about 2,084 (204)

Severity of Overstory Mortality Influences Conifer Recruitment and Growth in Mountain Pine Beetle-Affected Forests

, 2018
The severity of lodgepole pine mortality from mountain pine beetle outbreaks varies with host tree diameter, density, and other structural characteristics, influencing subcanopy conditions and tree regeneration.
Frederick W. Smith, Kristen A. Pelz, Charles C. Rhoades, Robert M. Hubbard   +3 more
core   +1 more source

Long‐term and landscape impacts of buffel grass on arid plant communities: Ecosystem shifts and acceleration by fire

Ecosphere
Plant invasions drive biodiversity loss, transform ecosystems, and promote positive‐feedback cycles between invasion and fire. However, the long‐term impacts of invasive grasses across landscapes with diverse plant communities and interactions with fire ...
Ellen Ryan‐Colton, Kris French, Glenda M. Wardle, John L. Read, Peter D. Canty, Peter J. Lang, Doug C. Bickerton, Christine A. Schlesinger   +7 more
doaj   +1 more source

Overstory and herbaceous layer of a riparian savanna in northwestern Pennsylvania

, 1999
Vegetation species composition and richness was examined in a riparian savanna in the nonglaciated Allegheny Plateau of northwestern Pennsylvania. Microtopography within the savanna consisted of numerous small, dry ridges alternating with saturated ...
Walters, Gary L., Moriarity, William J., Williams, Charles E.   +2 more
core  

Herbaceous Layer Response to Overstory Vegetation Changes in Quercus mongolica Fisch. ex Ledeb. Forests in Korea

The development of overstory vegetation can considerably influence the composition and dynamics of herbaceous layer vegetation. However, the type of ecological processes underlying these changes remain poorly understood.
Byeong-Joo Park, Kwangil Cheon
core   +1 more source

Nothofagus dombeyi regeneration in declining Austrocedrus chilensis forests: Effects of overstory mortality and climatic events

, 2012
This research examines the regeneration dynamics of . Nothofagus dombeyi and . Austrocedrus chilensis in . A. chilensis-dominated forests growing near the eastern limit of . N. dombeyi where precipitation is limiting.
Amoroso, Mariano Martin, Suarez, Maria Laura, Daniels, Lori D.   +2 more
core   +1 more source

δ13C and δ18O Trends Across Overstory Environments in Whole Foliage and Cellulose of Three Pinus Species

, 2008
Stable isotope ratios of carbon (δ13C) and oxygen (δ18O) are increasingly used to investigate environmental influences on plant physiology. Cellulose is often isolated for isotopic studies, but some authors have questioned the value of this process.
K PREGITZER, Palik, Brian J., B PALIK, M POWERS, Powers, Matthew D., Pregitzer, Kurt S.   +5 more
core   +1 more source

Connection between phyllosphere microbial composition and leaf stoichiometry of Phoebe bournei at upper and lower canopy positions

Industrial Crops and Products
Closer-to-nature forest management models that transform plantations into uneven-aged multi-storied forests, can enhance long-term sustainability. The density of the upper canopy trees regulates light resource allocation for trees in the understory ...
Yunlong Tian, Jingwen Wu, Zhaoquan Zhong, Xiaoqian Lian, Xiangqing Ma, Kai Wang, Pengfei Wu   +6 more
doaj   +1 more source

Twenty-Year Responses of Aspen Stands to Forest Tent Caterpillar Defoliation and Overstory Dieback in Northeastern Ontario, Canada

Forest tent caterpillar (Malacosoma disstria Hbn.) is a major forest defoliator in North American boreal forests. This pest periodically affects hardwood trees such as trembling aspen (Populus tremuloides Michx.) and balsam poplar (Populus balsamifera L.)
Man, Rongzhou
core   +1 more source

Forest Composition, Regeneration, and Tree Quality in the Southern Appalachian Mountains of Virginia: Selective Cutting vs. Shelterwood

, 2023
This study compared the effects of selective cutting (SC) and the first shelterwood (SW) cut in oak (Quercus)-dominated forests of western Virginia. The specific attributes compared were: (1) tree species composition; (2) seedling, sapling, and overstory
Ryan, Suzanne Michelle
core  

Multi-scale controls on natural regeneration dynamics after partial overstory removal in Douglas-fir forests in western Oregon, USA

We examined natural regeneration following operational-scale variable density retention treatments in 40-60 year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) forests at seven sites for a decade following treatment.
Burton, Julia I., Puettmann, Klaus J., Dodson, Erich K.   +2 more
core