Global ETD Search
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 22 for “"Wood anatomy"”.
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Radial growth response of eastern hemlock to infestation of hemlock woolly adelgid
… were to quantify changes in tree-ring width and wood anatomy for trees that survived adelgid infestation, and to contrast dendroclimatic relationships across a latitudinal gradient. Six sites spanning the current range of hemlock woolly adelgid (HWA) infestation were selected. At each site, 23 …
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Climatic reconstruction using wood charcoal from archaeological sites
This thesis assesses the feasibility of using wood charcoal from archaeological sites as a palaeoclimatic indicator. Three techniques are described: (i) charcoal identification from Xylem Anatomy. (ii) Ecologically Diagnostic Xylem Analysis and (iii) stable carbon isotope analysis on wood charcoal. …
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ΔΙΑΚΥΜΑΝΣΗ ΤΩΝ ΔΟΜΙΚΩΝ ΧΑΡΑΚΤΗΡΩΝ ΤΟΥ ΞΥΛΟΥ ΤΟΥ ΚΥΠΑΡΙΣΣΙΟΥ (CUPRESSUS SEMPERVIRENS L.) ΣΤΗΝ ΕΛΛΑΔΑ
THE WOOD ANATOMY OF CYPRESS (CUPRESSUS SEMPERVIRENS L.) IN THE TWO MAIN VARIETIES, THE PYRAMIDALIS AND THE HORIZONTALIS IN THREE NATURAL REMOTE POPULATIONS (CRETE, RHODES, SAMOS) AND IN A PLANTATION (PELOPONNESE) WITH TREES OF BOTH VARIETIES WAS STUDIED . FOUR TREES WERE CUT FROM EACH REGION AND …
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Response of mat conditions and flakeboard properties to steam- injection variables
… area on flakes recovered from inside of the mat. Wood anatomy was found to be the dominating factor in creating high variablity in resin penetration area measurements, as differences could not be detected due to the press schedules or resin type.
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The application of numerical methods to the taxonomy of Spermatophyta: with evaluation of the taxonomic implications of the results
… data on floral and vegetative morphology, anatomy, cytology, palynology and embryology, and this is analysed under three different numerical methods (INFO, ASOC and MULASS). A comparison of the results throws light on the high-level taxonomy of Dicotyledons; the currently unfashionable …
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Biology of virulent and hypovirulent Endothia parasitica on American chestnut (Castanea dentata)
… and other pathological alterations of bark and wood anatomy probably were results of differences in rates of fan formation and growth. Wound periderm formation began at the deepest point of a wound or canker and progressed outward to the bark surface. Superficial cankers arose in resistant trees …
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Refining dendrochronology to evaluate the relationship between age and diameter for dominant riparian trees in the Redwood Creek watershed
… macrophyllum)</p> <p>in the floodplain of Redwood Creek were evaluated for the</p> <p>relationship between age and diameter at breast height (DBH)</p> <p>using a least squares linear regression analysis. Through this</p> <p>study, complications with analysis for the riparian tree species</p> …
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Tree-ring analyses of European oak: implementation and relevance in (pre-)historical research in Flanders.
Throughout human history, forests and woodlands in Western Europe experienced a high anthropogenic influence. In densely populated areas forests were cleared and converted to arable land or were exploited for the supply of firewood and construction timber. In Flanders, it is estimated that the …
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Tree-ring analyses of European oak: implementation and relevance in (pre-)historical research in Flanders
Throughout human history, forests and woodlands in Western Europe experienced a high anthropogenic influence. In densely populated areas forests were cleared and converted to arable land or were exploited for the supply of firewood and construction timber. In Flanders, it is estimated that the …
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HOW TO REDUCE TRANSPLANT STRESS IN URBAN TREES
… in a forest nursery, where seedlings of woody species were grown in a substrate amended with different doses of a pure A. nodosum extract. Growth, gas exchange and early root development were monitored. High doses increased biomass, chlorophyll content and gas exchange, and improved …
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Tree-ring analysis and stem biomass estimation of limba (Terminalia superba Engl. & Diels) in the framework of sustainable forest management
… The lack of long-term data on tree growth, wood production and carbon stocks hampers the implementation of sustainable forest management and possible financing by Kyoto Protocol related tools like REDD+ and Clean Development Mechanisms. Africa is the continent with the lowest percentage of …
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Carbon and Water Relations in Pinus Taeda: Bridging the Gap across Plant Physiology, Genomics, and Global Climate Change
… and physiological traits in adult, long-lived woody plants; and (3) forest trees exchange a significant amount of carbon and water with the atmosphere and are therefore major players in the global carbon and water cycles. </p><p>Water flux through forests depends both on environmental …
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Wachstumsraten, Wachstumsmuster und Wachstumsstörungen tropischer Bäume: Analyse von Langzeiteffekten und kurzfristigen Störungen mit Hilfe von Jahrringstudien
… of parenchyma bands at the end of the latewood, followed by a relatively distant sequence of parenchyma bands in the subsequent early wood of a tree ring. However, it was impossible to establish a chronology, solely by tree-ring width measurements and crossdating, for a number of reasons, …
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Vegetative Anatomy of Rhododendron with a Focus on a Comparison between Temperate and Tropical Species
… (high theoretical conductivity). Rhododendron wood and vessels were found to be relatively safe. The metrics of wood efficiency were higher for the tropical species. Thus, a trade-off between safety and efficiency was found although the wood of Rhododendron is characterized as highly safe. Leaf …
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Assessing the functional significance of wood nutrient resorption along a soil fertility gradient
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-08-01
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Compression wood formation in Pinus strobus L. following ice storm damage in southwestern Virginia
To evaluate the compression wood response in eastern white pine (Pinus strobus L.) following a severe ice storm in 1994, 47 trees were felled in 2007 and cross-sectional samples were collected at 0.5 (±0.2) m stem height. The disks were sanded and digitally scanned, and the cross-sectional area …
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