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 16 of 16 for “"tree age"”.
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PILOT STUDY ON THE PREDICTION OF HEART ROT IN APPARENTLY SOUND WESTERN LARCH
Since many cavity-excavating birds require trees with heart rot, managers routinely emphasize decayed trees in their snag retention prescriptions. Where too few trees are present with obvious indicators of decay, apparently sound trees are left to meet retention objectives. These trees may also …
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PILOT STUDY ON THE PREDICTION OF HEART ROT IN APPARENTLY SOUND WESTERN LARCH
Since many cavity-excavating birds require trees with heart rot, managers routinely emphasize decayed trees in their snag retention prescriptions. Where too few trees are present with obvious indicators of decay, apparently sound trees are left to meet retention objectives. These trees may also …
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Arthropod assemblages on longleaf pines: a possible link between the red-cockaded woodpecker and groundcover vegetation
… of groundcover on arthropods by controlling for tree species, tree age, soil type, hardwood midstory density, and overstory basal area. My results show that arthropod biomass was positively and significantly correlated to the percent coverage of herbaceous and graminoid vegetation and was …
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Historical growth rates and changing climatic sensitivity of boreal conifers
… of relatively long-timescale growth forcing in tree-ring chronologies. The operation of different standardisation techniques, used in dendroclimatology to remove internal, non-climate related growth trends in measured series of ring-widths, is explored with an emphasis on the efficiency of the …
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Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas
… controversy and consideration of other management alternatives. A twist of fate involving an economic recession, a dedicated group of outdoor recreation enthusiasts, and environmental conservationists led to the permanent protection of 384 acres in the Kessler Mountain Regional Park. To …
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Methods for modeling whole stem diameter growth and taper
… Gray defined form to be the basic shape of the tree, e.g. cone or parabolid, and taper to be the rate of narrowing in diameter given a tree form. Ormerod's stem profile model was selected as the basic model since its parameters were readily interpretable in terms of Gray's taper and form …
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Spatial and temporal dynamics of fire and vegetation change in Thunder Creek watershed, North Cascades National Park, Washington
… following a series of fires c. 150 years ago. Tree species, age and size data were sampled along altitudinal transects. Tree species distributions and relationships with environmental factors were analyzed using multivariate and regression techniques, and forest development was evaluated from …
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Short Rotation Forestry and Earthworm Diversity: Impacts and Responses
… the soil biogeochemistry of SRF systems, and the tree species can impact on the associated earthworm community. The aim of this study was to investigate the effects of SRF species and litter quality on earthworm communities, their diversity and activity. In addition, the effects of earthworms on …
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Effect of Evapotranspiration Rate on Almond Yield in California
… annual evapotranspiration after adjusting for tree age and location (east, west and northwest side) was made for each year (2011 and 2013 -2015). Coefficient of variation of evapotranspiration and soil available water storage were analyzed as additional variables in Model 3; however, they were …
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Decision analysis of novel point-of-care diagnostics for Pediatric Pneumonia : implementation in Developing countries with tiered healthcare systems
… to make clinical decisions. Its key advantage include the quick turnaround of results, low cost and high diagnostic power could potentially improve India's pressing situation due to pneumonia. Since the disease progresses quickly in infants and babies and transportation of patients within …
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Exploring forest-water nexus in a changing environment of Kafue river basin, Zambia.
… its implications for sustainable river basin management and Inter-Basin Water Transfer (IBWT) from Luapula River Basin to KRB, Zambia. A systematic literature review using PRISMA guidelines was conducted through Google Scholar (1970 to 2023). Remote sensing datasets: Actual ET (AET), NDVI, Total …
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Exploring forest-water nexus in a changing environment of Kafue river basin, Zambia.
… its implications for sustainable river basin management and Inter-Basin Water Transfer (IBWT) from Luapula River Basin to KRB, Zambia. A systematic literature review using PRISMA guidelines was conducted through Google Scholar (1970 to 2023). Remote sensing datasets: Actual ET (AET), NDVI, Total …
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Fire, climate, and forest structure in ponderosa pine forests of the Black Hills
… forest stands composted primarily of old, large trees. However, this model may not apply uniformly to ponderosa pine forests in the Black Hills of southwestern South Dakota and northeastern Wyoming. Infrequent, extensive stand-replacing fires also may have occurred and apparently resulted in …
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Changes in soil invertebrate decomposer communities during regeneration of Scots Pine within the Abernethy Forest Reserve, Scotland
… of the soil types, were also selected based on tree density and diameter at breast height (dbh). Together these sites formed two transects representing succession from moorland to mature woodland on the two soil types. At each site soil invertebrates were collected to a depth of 0.1 in and …
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Compression wood formation in Pinus strobus L. following ice storm damage in southwestern Virginia
… 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 (mm2) of compression wood within each tree-ring was quantified using image …
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Chacma baboon movement and behaviour in commercial timber plantations in South Africa and their association with bark-stripping
… to the widespread establishment of commercial tree plantations in the escarpment region of Mpumalanga Province, South Africa, and test the hypothesis that plantations are ‘green deserts' with reduced biodiversity. Camera trap surveys revealed that many wildlife species persist even under …