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Dissertations / Theses on the topic 'Tree species selection'

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1

Roy, Sudipto. "Factors Influencing Australian Local Governments’ Street-Tree Species Selection." Thesis, Griffith University, 2015. http://hdl.handle.net/10072/366839.

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Rapid urbanisation is resulting in environmental degradation, including soil erosion, species extinction, and air pollution. Street‐trees as part of a city’s green infrastructure have the potential to ameliorate some of these problems in urban environments. They can provide an array of services such as providing shade and habitat. Unfortunately, they can render disservices too, such as by damaging road surfaces, footpaths and underground infrastructure. The extent and type of street‐tree services and disservices vary among species. Hence, choosing the wrong tree for the wrong place
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2

Heineman, Arne M. "Species selection for alley cropping in Western Kenya : system management, nutrient use efficiency and tree-crop compatibility (1988-1995)." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318545.

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3

Palmer, Geoffrey Hamilton. "Ecological Assessment of Red-Bellied Squirrels (Sciurus Aureogaster) Introduced to Elliott Key, Florida." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/268533.

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Introduced species present one of the greatest threats to biodiversity of native species, and knowledge of introduced species ecology is imperative for the development of management plans to ensure conservation of native species populations. We sought to determine the distribution and nesting behavior of an introduced population of red-bellied squirrels (Sciurus aureogaster) on islands of the Florida Keys currently managed as part of Biscayne National Park, and document potential for the species to impact native flora and fauna. Squirrels were difficult to observe in the dense vegetation of
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4

Wender, Bryan William. "The impacts of seven silvicultural alternatives on vascular plant community composition, structure, and diversity in the southern Appalachians." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/35653.

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The effects of seven silvicultural prescriptions were examined one full growing season post-treatment on five sites in the Ridge and Valley, Cumberland Plateau, and Allegheny Plateau of Virginia and West Virginia. Prescriptions were (1) control, (2) understory control with herbicide, (3) group selection, (4) high-leave shelterwood, (5) low-leave shelterwood, (6) leave tree, and (7) clearcut. The effects of each treatment on the vascular plant community were characterized by changes in species diversity, species composition, exotic species richness, Raunkiaer's life-forms, and growth-forms.
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5

Krueger, Kirk L. "Effects of Sampling Sufficiency and Model Selection on Predicting the Occurrence of Stream Fish Species at Large Spatial Extents." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/26214.

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Knowledge of species occurrence is a prerequisite for efficient and effective conservation and management. Unfortunately, knowledge of species occurrence is usually insufficient, so models that use environmental predictors and species occurrence records are used to predict species occurrence. Predicting the occurrence of stream fishes is often difficult because sampling data insufficiently describe species occurrence and important environmental conditions and predictive models insufficiently describe relations between species and environmental conditions. This dissertation 1) examines the suff
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6

Towner, Ronald H., Matthew W. Salzer, James A. Parks, and K. Renee Barlow. "Assessing The Importance Of Past Human Behavior In Dendroarchaeological Research: Examples From Range Creek Canyon, Utah, U.S.A." Tree-Ring Society, 2009. http://hdl.handle.net/10150/622611.

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Dendroarchaeological samples can contain three kinds of information: chronological, behavioral, and environmental. The decisions of past people regarding species selection, beam size, procurement and modification techniques, deadwood use, and stockpiling are the most critical factors influencing an archaeological date distribution. Using dendrochronological samples from prehistoric and historic period sites in the same area of eastern Utah, this paper examines past human behavior as the critical factor in dendroarchaeological date distributions.
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7

Chupp, Adam Daniel. "Habitat Selection in Four Sympatric Small Mammal Species and the Effects of Potential Predators on Peromyscus Leucopus." VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/657.

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I examined the effects of potential predators in relation to habitat selection in Peromyscus leucopus. I also examined habitat selection in three other sympatric species (Blarina brevicauda, Blarina carolinensis, Sorex longirostris). I utilized data fiom 49 sampling sites on National Park Service land; Petersburg National Battlefield Eastern Front Unit (15), Five-Forks Unit (17), Appomattox Court House National Historical Park (15) and Booker T. Washington National Monument (12). Sites were categorized by location (park unit) and habitat type (i.e. bottom-land hardwood), and the microhabitat w
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8

Hood, Sharon M. "Vegetation Responses to Seven Silvicultural Treatments in the Southern Appalachians One-Year After Harvesting." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33316.

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The vegetation responses to seven silvicultural treatments one growing season after harvesting were examined on seven sites in the southern Appalachian mountains of Virginia and West Virginia. Treatments included: 1) control, 2) understory control by herbicide, 3) group selection, 4) high-leave shelterwood, 5) low-leave shelterwood, 6) leave tree, and 7) clearcut. The effects of harvesting were compared between treatments and between pre-harvest and post-harvest samplings. Species richness, percent cover, and local species extinctions were calculated for sample plots ranging in size from 1m
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9

Nilson, Kristina. "Regeneration dynamics in uneven-aged Norway spruce forests with special emphasis on single-tree selection /." Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 2001. http://epsilon.slu.se/avh/2001/91-576-6093-X.pdf.

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10

Contreras, Ruiz Esparza Ana Beatriz. "Effects of fire and selective logging on understory birds and tree species in a tropical montane forest, México." Thesis, University of East Anglia, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443181.

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11

Cloutier, Dominic. "Conservation genetics of exploited Amazonian forest tree species and the impact of selective logging on inbreeding and gene dispersal in a population of Carapa guianensis." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102969.

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The Amazon region is one of the richest areas on the planet in terms of its biodiversity and natural resources. The large scale harvesting of trees in this region is a relatively new activity, and it is uncertain whether the exploitation of timber species will result in depletion of forest genetic resources. To examine this, I have assessed levels of inbreeding, gene flow, and genetic diversity in populations of Amazonian forest trees undergoing logging. Because of their high variability within populations, microsatellite genetic markers were chosen for the study, and it was verified through a
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12

O'Leary, Rebecca A. "Informed statistical modelling of habitat suitability for rare and threatened species." Thesis, Queensland University of Technology, 2008. https://eprints.qut.edu.au/17779/1/Rebecca_O%27Leary_Thesis.pdf.

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In this thesis a number of statistical methods have been developed and applied to habitat suitability modelling for rare and threatened species. Data available on these species are typically limited. Therefore, developing these models from these data can be problematic and may produce prediction biases. To address these problems there are three aims of this thesis. The _rst aim is to develop and implement frequentist and Bayesian statistical modelling approaches for these types of data. The second aim is develop and implement expert elicitation methods. The third aim is to apply these novel ap
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13

O'Leary, Rebecca A. "Informed statistical modelling of habitat suitability for rare and threatened species." Queensland University of Technology, 2008. http://eprints.qut.edu.au/17779/.

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In this thesis a number of statistical methods have been developed and applied to habitat suitability modelling for rare and threatened species. Data available on these species are typically limited. Therefore, developing these models from these data can be problematic and may produce prediction biases. To address these problems there are three aims of this thesis. The _rst aim is to develop and implement frequentist and Bayesian statistical modelling approaches for these types of data. The second aim is develop and implement expert elicitation methods. The third aim is to apply these novel ap
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14

Fang, Chih-Chun, and 方芷君. "Selection and Culture of Tropical Tree Species for Mini Pot Plants." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/95417795397864979597.

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碩士<br>東海大學<br>景觀學系<br>89<br>While modern people lead a rich material life, more greenness in their living circumstances has become one of the main concerns. People nowadays want their plants healthy and beautiful, but are too busy to spend time taking care of their plants. The pot planting , combining with bonsai art and easy gardening skill, was created in wish to limit the plant size and growth speed. The present study focuses on the “ Mini Pot Plants ”, starting from observing different types of plant seeds and their sprouts. After careful evaluation, we chose 24 appropriate sp
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15

Lin, Yi-Siou, and 林怡秀. "Establishing the Expert System on the Selection of Street Tree Species." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/36273407224752699410.

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碩士<br>國立中興大學<br>園藝學系所<br>96<br>The issue of selecting right street tree species for the right place has always been a major concern for related researches and practical planting design. Plant selection involves a complex cognition of information process and selection procedure. Designers need to consider selection criteria, environmental condition, and attributes of plants at the same time. In addition to the experienced experts, nonprofessional or inexperienced designers will have troubles in selecting the right plant species. Fortunately, owing to the development of knowledge engineering and
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16

Rostami, Maliheh. "Tree species selection for the Halifax urban forest under a changing climate." 2011. http://hdl.handle.net/10222/14211.

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Tree selection is critical to ensuring that urban forests are diverse, healthy, and adapted to the urban environment. Climate is one of the main controllers of plant distribution around the world, so tree species are expected to redistribute as a result of climate change. This research aimed to identify which eastern North American tree species should be most suited for planting in urban areas in Halifax given impending climate change. A database was developed for 57 tree species and 95 tree characteristics to enable analysis of tree species native to eastern North America. The results of prev
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17

Kuo, Jin-Wei, and 郭晉維. "Selection of fire-resistant tree species for Wuling area in central Taiwan." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/20992980600046835409.

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碩士<br>國立中興大學<br>森林學系所<br>100<br>Forest fires have always led to significant losses. Installing permanent firebreaks and fire preventive zone are important measures. Fire accidents often caused serious and significant losses at mid- and high-altitude regions of Taiwan. Creating fire-retarding forest belts to prevent the spread of forest fires at these altitudes is critical because transportation is difficult. We determined the combustibility of current tree species in the Wulin area. Our experimental results indicate that species selection when fire preventive zone to gradually replace current
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18

McElhinney, Ashley. "Ecological Considerations and Application of Urban Tree Selection in Massachusetts." 2019. https://scholarworks.umass.edu/masters_theses_2/784.

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Trees provide countless environmental, economic, and societal benefits to the urban environment, and may become increasingly important to maintaining environmental quality and human well-being in the face of increasing urbanization and climate change. However, trees in these urban areas are rapidly diminishing across the United States. Much of this loss can be prevented with proper planning and management, focused on selecting tree species that are both well-suited to the area’s growing conditions and able to survive the many stress factors in an urban setting. Choosing which tree species to p
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19

Jones, Trevor A. "Growth and physiological responses of canopy tree species to selection harvests in a northern hardwood forest /." 2006. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=442449&T=F.

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20

Semenya, Khomotso. "Environmental health risks associated with firewood induced volatile rganic compounds in Senwabarwana Villages, Republic of South Africa." Thesis, 2020. http://hdl.handle.net/10500/27393.

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Firewood is a dominant household fuel type used in many developing countries. Even in countries where there is improved access to electricity, most households still rely on firewood for their energy needs. Harvesting of some wood is illegal, however the high poverty rate, absence of alternative fuels and lack of law enforcement means even the protected wood species will continue to be used, with consequent pressure on the forests. Furthermore, the combustion of firewood for domestic use takes place in poorly ventilated homes emitting hazardous pollutants, which causes indoor air pollutio
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21

McConville, Anna. "The ecology of the east-coast free-tailed bat (Mormopterus norfolkensis) in the Hunter region." Thesis, 2014. http://hdl.handle.net/1959.13/1042325.

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Research Doctorate - Doctor of Philosophy (PhD)<br>A detailed understanding of the ecology of threatened species is essential if we wish to develop effective conservation management strategies. Mormopterus norfolkensis (eastcoast free-tailed bat) is a threatened insectivorous bat species of which little is known. The aim of this thesis was to address knowledge gaps regarding key aspects of the ecology of M. norfolkensis, including habitat, roost selection and diet. Habitat use was investigated at multiple spatial scales, using three independent and systematically collected datasets. Overall, p
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22

Leskiw, Michael P. "Victoria’s street trees : planning for climate change through species selection and arboricultural maintenance practices." 2009. http://hdl.handle.net/10170/102.

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Street tree health in the City of Victoria, British Columbia has declined in the last decade. Using the health condition of six tree genera representing 72 % of the total 17,601 COV street trees inventory in 2005 this trend is likely in large part due to lack of moisture from June to October. Declining health is evident in branch die back and early leaf drop especially on species with a medium to high water requirement. The Prunus genus (cherries and plums) in particular, which comprises 29% of all COV street trees, was rated at 54% fair to dead condition which is 20% higher than all COV stre
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23

Dao, Thi Hoa Hong. "Threatened tree species across conservation zones in a nature reserve of North-Western Vietnam." Doctoral thesis, 2017. http://hdl.handle.net/11858/00-1735-0000-0023-3DE7-F.

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24

Maas, Bea. "Birds, bats and arthropods in tropical agroforestry landscapes: Functional diversity, multitrophic interactions and crop yield." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0022-5E77-5.

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