Results 221 to 230 of about 95,957 (257)

Invasion by woody shrubs and trees

2014
The invasion of many habitats by exotic shrubs and trees has been an important factor causing changes in Australian native vegetation through declines in species richness, changes to community composition and reducing ecosystem function (Lindsay and French 2004; Gosper eta!. 2006; Mason and French 2007; Gooden et at. 2009).
French, Kris, Gooden, Ben, Mason, Tanya
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Forestry Trees as Invasive Aliens

Conservation Biology, 1998
Some alien tree species used in commercial forestry and agroforestry cause major problems as invaders of natural and seminatural ecosystems. The magnitude of the problem has increased significantly over the past few decades, with a rapid increase in afforestation and changes in land use.
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Dielectric Characterization of the Seeds of Invasive Chinese Tallow Tree

Journal of Microwave Power and Electromagnetic Energy, 2013
Biofuels have the potential to replace a significant portion of the transportation needs of the USA and the world. Low-cost lipid feedstock (i.e. tallow tree seeds) can be used for production of biodiesel, but these seeds need to be dried. Microwave drying is utilized to dry various seeds and grain, but for this process to be most efficient the ...
Dorin Boldor
exaly   +3 more sources

The Outcome of Alien Tree Invasions in Puerto Rico

Frontiers in Ecology and the Environment, 2004
Invasive alien tree species in Puerto Rico often form monospecific stands on deforested lands that were previously used for agriculture and then abandoned. Most native pioneer species are incapable of colonizing these sites, and thus introduced species have little competition from native trees.
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Invasion percolation through minimum-weight spanning trees

Physical Review E, 2008
Invasion percolation is often used to simulate capillary-dominated drainage and imbibition in pore networks. More than a decade ago it was observed that the part of a pore network that is involved in an invasion bond percolation is a minimum-weight spanning tree of the network, where the weights indicate resistances associated with the bonds. Thus, one
Roland, Glantz, Markus, Hilpert
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Invasive Shrubs and Forest Tree Regeneration

Journal of Sustainable Forestry, 2009
Invasive shrubs are having important effects on forests in the United States. Over 100 species were found that have actual or potential effects on forest structure and function. The number of invasive shrub species in each state is correlated with both latitude and state population.
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Tree Invasion of Montane Meadows in Oregon

American Midland Naturalist, 1981
Mesic montane meadows in the Cascade Mountains of central and southern Oregon have been invaded recently by trees from the adjacent forests. Cessation of sheep grazing coincides with the initiation of the tree invasions, but the absence of frequent fires and cool moist weather both may have contributed to the conditions which favored the unstable ...
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The importance of an invasive tree fruit as a resource for mosquito larvae

Journal of Vector Ecology, 2011
Invasive plants are common and may provide resources through litter for container mosquito larvae. Invasive plant reproductive parts can make up a substantial part of litter but have mostly been ignored as a resource for mosquito larvae. We hypothesized that the reproductive fruits of the invasive eastern red cedar, Juniperus virginiana, provide high ...
Michael H, Reiskind, Ali A, Zarrabi
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A non-invasive method for evaluating trees

IEE Seminar on Time-Scale and Time-Frequency Analysis and Applications, 2000
Recently high winds raged across central Europe felling trees with the inevitably consequence that some of the trees damaged property and in a number of cases caused personal injury or the tragic loss of life. The risk posed to property and life by wind-blow damage to a tree is assessed by a number of factors with the principal determinants being the ...
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INCREASED COMPETITIVE ABILITY OF AN INVASIVE TREE MAY BE LIMITED BY AN INVASIVE BEETLE

Ecological Applications, 2003
Invasive plants are often more vigorous in novel habitats than in their native ranges.Sapium sebiferum(Chinese tallow tree) is a major invader of habitats in the southern United States. Long‐term common garden experiments in Texas and Hawaii (USA) withS.
Evan Siemann, William E. Rogers
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