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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"Acer saccharum"”.
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Effects of nitrogen and calcium on photosynthesis and metabolic activity in Acer saccharum in the Catskill Mountains
… other ions that can be harmful to sugar maple (Acer saccharum) rooting systems. The effects of fertilizers on the metabolism and photosynthesis rates of sugar maple are of great interest to both farmers and ecologists. In this study, 12 plots in a 60-year-old sugar maple dominated forest were …
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The effects of stress on biomass, soluble sugar concentrations and VA mycorrhizal colonization in sugar maple seedlings (Acer saccharum Marsh.)
Increasing ozone levels (0, 50, 100, 150, 200, 300 ppb) coupled with 80% shading and 50% defoliation were examined for two year-old sugar maple seedlings for one growing season (June-September). Biomass, soluble root carbohydrates and mycorrhizal colonization progressively decreased with increasing …
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Signature spectrale des feuilles d'érable à sucre (Acer saccharum Marsh.) en fonction des angles d'éclairement et de visée, 500-800 nanomètres
Le dépérissement des érablières est un problème qui prend beaucoup d'ampleur; on a observé des cas de dépérissement dans toute la zone bioclimatique de l'érablière. L'utilisation de la télédétection est souhaitée pour le suivi et l'étude du dépérissement de l'érablière. L'objectif de cette …
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Site quality factors affecting Acer saccharum, Quercus rubra and Quercus alba abundance and height growth rates in young even-aged stands located in central Missouri
Sugar maple importance has been increasing in Missouri's forest for the previous several decades. Managers have little information to guide them with selecting silviculture treatments for managing this increasingly important species. I examined the effects that soil water, soil nutrients, and …
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Sugar maple (Acer saccharum Marsh.) provenances differ with climate of origin in survival, growth, and traits along a climate gradient: implications for the species' distribution under climate change
… of temperature and neighbors on sugar maple (Acer saccharum) seedling survival, growth, biomass allocation, and functional traits, and whether this response varies with populations’ climate of origin. I first examine survival and growth of forest-planted seedlings across a natural climate …
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Spring Phenology and Trophic Ecology of Trees, Caterpillars, and Migrating Neotropical -Nearctic Songbirds
… elm)], and avoided a dominant tree species, Acer saccharum (sugar maple). Rare tree species supported more caterpillars per leaf than Acer saccharum, and tree species preferences were associated with caterpillar abundance in one year. Yellow-rumped warblers fed in both common and rare tree …
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A Physiological Investigation of Adventitious Root Initiation in the Genus Acer
… root initiation among species in the genus Acer were investigated. Acer ginnala, A. rubrum and A. saccharinum were easily rooted from softwood stem cuttings. Acer saccharum was moderately difficult to root from cuttings. Acer griseum was the most difficult-to-root species in this study. …
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Vegetation distribution and site relationships in an Appalachian oak forest in southwest Virginia
… dominants in order of decreasing importance were Acer rubrum, Quercus rubra, Liriodendron tulipifera, Quercus prinus, Acer saccharum and Quercus coccinea. Most site factors of importance, including elevation, lithology, landform, slope position, steepness, exposure, and soil depth appeared to …
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Powdery Mildew (Erysiphe cruciferarum) Affects the Allelopathic and Competitive Abilities of Invasive Garlic Mustard (Alliaria petiolata)
… to those grown next to uninfected A. petiolata. Acer saccharum, a slow-growing species had no effect between neighbors. Sterilization treatments had variable effects on target plants, many of which mirror the effects which allelopathic plants (A. petiolata) that disrupt soil microbes seem to …
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Changes in stand structure and species diversity following clearcutting in central Appalachian hardwoods
… americana, and the understory will be primarily Acer saccharum.
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An investigation of maple flavor
… obtained by hydrolysis and oxidation from Acer saccharum wood. This has been done and the material is shown to be 3-methoxy-hydroxycinnamic aldehyde or coniferyl aldehyde. It has been shown definitely that the flavor is not due to vanillin. An extraction procedure has been worked out for …
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Species, stand, and regional response to forest damage in southwestern Quebec following the 1998 ice storm
The response of four tree species, Acer saccharum Marsh., Acer rubrum L., Populus tremuloides Michx., and Betula populifolia Marsh. to ice storm damage was studied in the Northern Hardwood Forest of southwestern Quebec, Canada. The focus of the study was the analysis of tree damage resulting from …
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Differential Canopy Leaf Flushing and Site Nitrogen Status Facilitate Invasive Species Establishment in Temperate Deciduous Forest Understories
… tremuloides</em> (quaking aspen), <em>Acer saccharum </em>(sugar maple), <em>Quercus </em>spp./<em>Carya </em>spp. (oak/hickory), <em>Fraxinus americana </em>(white ash), <em>Robinia pseudoacacia</em> (black locust), and <em>Pinus </em>spp<em>./Tsuga canadensis</em> (pine/hemlock). …
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Watershed and Streamside Management Zone Characterization in the Allegheny Plateau of West Virginia
… The major overstory tree species found are Acer saccharum, Liriodendron tulipifera, Fagus grandifolia, Tilia americana, Betula lenta, snags, Betula lutea, Fraxinus spp., and Acer rubrum. The overall average streamwater temperature is 13°C. Highest daily temperature occurred in the …
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Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas
… site (Site B) was dominated by sugar maple (Acer saccharum var. saccharum) and chinkapin oak. The understory was dominated by eastern red cedar (Juniperous virginiana) and northern red oak. The oldest chinkapin oak trees at Site B were in the 200 to 250-year-old age class. The data suggest …
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Interspecific wood trait variation predicts decreased carbon residence time in changing forests
… We hypothesized the increasing dominance of Acer spp. in eastern forests, due to disturbance regime changes, is driving a decrease in the mean species-weighted deadwood decay rate, decreasing the total C storage capacity of regional forests. 3. We observed significantly greater interspecific …
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An Evaluation of Concepts and Tools for Managing the Northern Hardwoods
… While this thesis is focused on sugar maple (Acer saccharum Marsh.) in central Ontario, its findings have broader theoretical implications on the development of silvicultural systems as well as classification systems in the northern hardwoods, which will be the subject of future work.
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Coordination of physiological and morphological acclimation of shade-grown tree saplings to late-season canopy gap formation
… red oak (Quercus rubra L.), sugar maple (Acer saccharum Marsh.), tulip poplar (Liriodendron tulipifera L.), and white ash (Fraxinus americana L.). Physiological acclimation responses included higher photosynthetic rates in shade-developed foliage upon exposure to higher irradiance and …
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