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Dissertations / Theses on the topic 'Plant species composition'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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1

Gubsch, Marlén. "Plant species and functional group responses to changes in plant community diversity and composition : functional traits, species interactions and resource use /." [S.l.] : [s.n.], 2009. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18342.

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2

Barbarasch, Bruce Michael. "Effects of surrounding land use on plant species composition in urban forest fragments." PDXScholar, 2005. https://pdxscholar.library.pdx.edu/open_access_etds/4130.

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As human development occurs in forested areas, forests become fragmented into small islands in a matrix of urban land uses. This study examined the effect of surrounding urban land uses on the native and exotic plant species found on the edges of forest fragments in the Portland, OR metropolitan region.

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3

Fribley, Laura A. "Woody plant species composition in forest fragments at Muscatatuck National Wildlife Refuge." Virtual Press, 2006. http://liblink.bsu.edu/uhtbin/catkey/1339145.

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Several invasive woody plants grow in forest fragments at Muscatatuck National Wildlife Refuge in Seymour, Indiana. The objective of this study was to determine what woody species were growing in two upland forests and to assess the level of dominance that invasive species had in these areas. The variables of depth into the forest and directional aspect were also considered. Thirty-two belt transects were sampled and 54 woody species were found, including six invasive species: Ailanthus altissima (tree-ofheaven), Berberis thunbergii (Japanese barberry), Elaeagnus umbellata (autumn olive), Loni

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4

Snyder, Keirith A. 1967. "Patterns of plant species diversity and composition in a semi-arid riparian ecosystem." Thesis, The University of Arizona, 1995. http://hdl.handle.net/10150/278513.

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Understanding plant community structure is fundamental to successful restoration and conservation of riparian ecosystems. High plant species diversity is often cited as an important characteristic of riparian areas. Graphical summaries, principal components analysis, and analysis of variance were used on species composition and abundance data to determine community patterns in riparian areas and surrounding uplands. Woody plant composition varied with relative elevation above the primary channel, but herbaceous composition appeared unaffected by proximity to the riparian area. Alpha diversity

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5

Bauer, Robert Benjamin. "Mob stocking effects on herbage nutritive value, herbage accumulation, and plant species composition." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/73914.

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Mob stocking is a variation of rotational stocking known for restricting a large number of animals to a small area before being moved to new grass after a few hours. This method allows a long (90-day) recovery period but was hypothesized to diminish the nutritional value of herbage relative to continuous and rotational stocking with lesser stocking density at similar stocking rates. This thesis summarizes two studies conducted in Blacksburg and Raphine, and in Steeles Tavern, VA, respectively, at a single beef cattle stocking rate of 12 animal unit months per hectare live body weight. The obje

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6

Garratt, Iain Michael Ronald. "The assessment of variable buffer zones to manage rocky ridges in Johannesburg, Gauteng / I.M.R. Garratt." Thesis, North-West University, 2006. http://hdl.handle.net/10394/18.

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7

Hunter, Dakota. "Invasive Species Research in Compensatory Wetland Mitigation: Investigating Plant Community Composition and Environmental Correlates with Three Invasive Plants." W&M ScholarWorks, 2019. https://scholarworks.wm.edu/etd/1563899036.

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Invasive plant species can alter natural communities and degrade ecosystem function, yet the factors influencing species invasion are poorly understood. Understanding how environmental factors affect plant invasion on compensatory wetland mitigation sites would allow wetland managers to approach invasive species management using a proactive approach (prior to invasion), thus minimizing the likelihood of invasive plants colonizing the system and degrading ecosystem function. In Chapter 1, I introduce the concepts and relevant literature used repeatedly in my project. In Chapter 2, I examine whi

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8

Mangan, Scott A. "Importance of the species composition of arbuscular mycorrhizal fungi to tropical tree seedlings." [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3243802.

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Thesis (Ph.D.)--Indiana University, Dept. of Biology, 2007.<br>Title from PDF t.p. (viewed Nov. 18, 2008). Source: Dissertation Abstracts International, Volume: 67-12, Section: B, page: 6842. Adviser: James D. Bever.

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9

Wright, Gabrielle A. Wright. "WHITE-TAILED DEER BROWSE PREFERENCE FOR AN INVASIVE SHRUB, AMUR HONEYSUCKLE, DEPENDS ON WOODY SPECIES COMPOSITION." Miami University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=miami1510834316256772.

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10

Hammond, Daniel N. Jr. "Characterization of Vascular Plant Species Composition and Relative Abundance in Southern Appalachian Mixed-Oak Forests." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36614.

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Eight study sites were established in mid-elevation, south aspect, mixed-oak forests in the Ridge and Valley and Allegheny Mountain physiographic provinces of Southwestern Virginia and West Virginia to address questions concerning the variability in species composition, richness, and relative abundance of vascular plant species in those communities. All forest strata were sampled using a nested plot design. Variability in species richness and species composition was found to be high. Total species richness values ranged from 84 to 273, and Sorrenson's Coefficient of Similarity index values

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11

Van, Tonder Carlo. "Factors influencing species richness, cover and composition of vegetation on Namaqualand quartz fields." Thesis, Nelson Mandela Metropolitan University, 2006. http://hdl.handle.net/10948/630.

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Quartz fields contribute significantly to plant diversity in the Succulent Karoo biome. They are distinctly different from surrounding habitats and have high levels of plant endemism. Biological soil crusts are features of quartz field soils and fulfill a vital function in that they stabilize soils. It is important for managers of nature reserves and agricultural rangelands to know what factors influence quartz field soils and vegetation. Both stakeholders could benefit from new information that would allow for informed decision-making regarding land-use on quartz fields. The present study too

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12

Miller, Helen. "Plant ecology of lowland Alnus Glutinosa woodlands : the management implications of species composition, requirements and distribution." Thesis, Aston University, 2012. http://publications.aston.ac.uk/16442/.

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Wet woodlands have been recognised as a priority habitat and have featured in the UK BAP since 1994. Although this has been acknowledged in a number of UK policies and guidelines, there is little information relating to their detailed ecology and management. This research, focusing on lowland Alnus glutinosa woodlands, aimed to address this data paucity through the analysis of species requirements and to develop a methodology to guide appropriate management for this habitat for the benefit of wildlife. To achieve these aims data were collected from 64 lowland Alnus glutinosa woodlands and a re

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13

Phillips, Samantha Elizabeth. "Composition of the Community of Small Mammals in the Great Basin Desert." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6961.

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Small mammals are a keystone guild in arid ecosystems; often exhibiting top-down control of the diversity and structure of plant communities. However, changing climate, shifting fire regimes, and the invasion of exotic plants are modifying the structure of arid systems. Environmental changes in these arid systems are likely altering small mammal communities, and therefore, their ecological role. We examined two aspects of the community composition of small mammals in the Great Basin: changes in community composition since large scale sampling of the region began in 1930, and the current popula

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14

Steinman, Alexis. "Assessment of Wetland Water Quality and Plant Species Composition across the Rural, Peri-Urban, and Urban Gradient." Thesis, North Dakota State University, 2017. https://hdl.handle.net/10365/28381.

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The Prairie Pothole Region, specifically eastern North Dakota, has experienced intense disturbance from agricultural demands and urban sprawl. This study assessed wetlands across the rural, peri-urban, and urban gradient to determine the impacts of urbanization on water quality and vegetation composition. Thirty wetlands were randomly selected and compared based on land use type and the impervious to pervious surface ratio within one mile of each wetland. Water quality samples were taken in 2015 and 2016, and a vegetation assessment was completed at all wetlands. Results indicate disturbance f

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15

Lilley, Patrick Ledford. "Determinants of native and exotic plant species diversity and composition in remnant oak savannas on southeastern Vancouver Island." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/243.

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Many regional and local factors can influence the distribution of native and exotic species in ecological communities. I examined the regional- and local-scale determinants of native and exotic vascular plant species richness and composition in a highly fragmented oak savanna ecosystem on southeastern Vancouver Island. In sharp contrast to most reported results, I found a negative relationship between native and exotic richness at the regional scale, and no relationship at the local scale. Two extrinsic factors, surrounding road density and climate, best explained the regional-scale relationsh

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Goedhart, Christian Leonard. "Influence of osmotic stress, ethanol, and a substituted pyridazinone, BAS 13-338, on the growth and lipid composition of two Chlorella species." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/53634.

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Chlorella vulgaris and Chlorella pyrenoidosa were compared relative to their abilities to grow at osmotic potentials of -0.1, -0.5, -1.0, -1.5, -2.0 MPa, [polyethylene glycol(PEG)-induced], and for osmotically-induced changes in lipid composition. C. vulgaris growth was inhibited as osmotic potentials decreased, while C. pyrenoidosa growth was moderately inhibited at -2.0 hPa. C. vulgaris produced increasing concentrations of triglycerides and sterol esters and decreasing levels of polar lipids and sterols as osmotic concentrations increased. Polar lipids, triglycerides, and sterols declined i

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17

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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18

Day, Nicola J. "Two decades of vegetation change across tussock grasslands in New Zealand's South Island." Master's thesis, Lincoln University. Bio-Protection and Ecology Division, 2008. http://theses.lincoln.ac.nz/public/adt-NZLIU20080304.145252/.

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New Zealand's South Island tussock grasslands have been highly modified by human activities, including burning, grazing and introductions of exotic plants for pastoralism. Studies suggest that tussock grasslands are degraded, in that native species have declined, and exotic species have increased in both diversity and abundance. These trends are primarily thought to be related to the impacts of grazing and subsequent grazing removal. Few studies have assessed long-term changes that have occurred in tussock grasslands, and those that have are generally limited to one particular location. This t

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19

Cheng, Zhiqiang. "Ecology of urban lawns the impact of establishment and management on plant species composition, soil food webs, and ecosystem functioning /." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1187031808.

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20

Daye, Desalegn Desissa. "Fragmented forests in south-west Ethiopia : impacts of land-use change on plant species composition and priorities for future conservation." Thesis, Bangor University, 2012. https://research.bangor.ac.uk/portal/en/theses/fragmented-forests-in-southwest-ethiopia--impacts-of-landuse-change-on-plant-species-composition-and-priorities-for-future-conservation(c44a2d3f-12b7-431c-bf7e-ce835da79b13).html.

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There is major concern internationally, and specifically in the Ethiopian afromontane biodiversity hotspot, about the impact of forest habitat fragmentation on biodiversity conservation. This study assessed the effect of land-use change on land-cover pattern, forest patch spatial structure and consequent effects on plant species richness and composition in two areas of southwest Ethiopia: Illubabor and the Gamo highlands of Gamo Gofa. Land-use change analysis was conducted on three sites, I (1500-2000 m altitude) and II and III (1878-2422 m altitude), each of 47,648 ha, in Illubabor and one ar

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21

Gustavsson, Eva. "Grassland plant diversity in relation to historical and current land use /." Uppsala : Dept. of Ecology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/2007106.pdf.

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22

Larouche, Martine. "Effects of past land use and landscape context on plant species composition and richness in woodlots of an agricultural landscape in Québec." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119667.

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The forest transition occurring in developed countries, including northeastern North America and western Europe, led to an emergence of secondary forests that fueled research about past land-use legacies on biodiversity. Past land-use has been shown to lower plant species richness, especially that of forest herb species. A few studies have also considered landscape configuration around secondary forests, either in the present-day or during the early period of old field colonization. My study examines the effects of both past land-use and past landscape context on species composition and richne

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23

Heimann, Juliane [Verfasser], Wolfgang W. [Akademischer Betreuer] Weisser, Günter [Akademischer Betreuer] Köhler, and Klaus [Akademischer Betreuer] Reinhold. "Generalist insect herbivore performance in dependence of plant species richness, composition and quality / Juliane Heimann. Gutachter: Wolfgang W. Weisser ; Günter Köhler ; Klaus Reinhold." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2012. http://d-nb.info/1028799012/34.

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24

Vujnovic, K. "Small-scale plant species composition and diversity in relation to environmental and disturbance factors in fescue grasslands of the aspen parkland of Alberta." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ34430.pdf.

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25

Richmond, Douglas Scott. "Influence of Endophytic Perennial Ryegrass, Lolium perenne L., on the population density of two insects and plant species composition in mixed Turfgrass Swards /." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488187049542887.

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26

Isherwood, Ewan. "The Effect of Contemporary Hydrologic Modification on Vegetation Community Composition Distinctness in the Florida Everglades." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/1027.

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The historic Everglades Ridge and Slough landscape maintained regularly spaced and elevated sawgrass ridges interspersed among exposed deeper-water sloughs; however, widespread but irregular hydrologic modification has degraded much of this landscape patterning. My study assessed the effects of hydrologic modification on vegetation community distinctness within the Ridge and Slough landscape through sampling species composition at fine-scales along a hydrologic gradient to measure the magnitude of segregation of species among patch types. The results show that vegetation community and topograp

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27

Ruggles, Thomas Alan. "Plant communities on reclaimed surface mines in Northeast Ohio: Effects of succession and nitrogen-fixing autumn olive." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1574681631819824.

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28

Ložytė, Aurelija. "The influence of agri-environmental measures based grassland management on grassland plant communities." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140526_082518-10331.

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Grassland is an important component of agrarian landscape, performing wide range of ecological, economic and social functions. Long-term changes of the conditions of habitats, determined by human economic activities, influence the state of grassland plants. Rural Development Programme for Lithuania 2007–2013 sets measure to preserve biological diversity of grassland. The purpose of it is to reduce negative anthropogenic effect on grassland plant communities using the EU funds. Having researched the differences of grassland plant diversity and economic value, influenced by different intensity e

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29

Petersen, Ute [Verfasser], Johannes [Akademischer Betreuer] Isselstein, Christoph [Akademischer Betreuer] Leuschner, and Teja [Akademischer Betreuer] Tscharntke. "Effects of agricultural management and manipulated plant species composition of permanent grassland on productivity and sward structure / Ute Petersen. Gutachter: Johannes Isselstein ; Christoph Leuschner ; Teja Tscharntke. Betreuer: Johannes Isselstein." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1043718567/34.

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30

Ehnes, James W. "The influences of site conditions, age and disturbance by wildfire or winter logging on the species composition of naturally regenerating boreal plant communities and some implications for community resilience." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ31975.pdf.

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31

Ström, Lotta. "Effects of climate change on boreal wetland and riparian vegetation." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-43811.

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Models of climate change predict that temperature will increase during the 21th century and the largest warming will take place at high northern latitudes. In addition to warming, predictions for northern Europe include increased annual precipitation and a higher proportion of the precipitation during winter falling as rain instead of snow. These changes will substantially alter the hydrology of rivers and streams and change the conditions for riverine communities. The warming is also expected to result in species adjusting their geographic ranges to stay within their climatic tolerances. Ripa

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32

Lindgren, Åsa. "Effects of herbivory on arctic and alpine vegetation." Doctoral thesis, Stockholm University, Department of Botany, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6746.

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<p>The distribution of plant species and functional traits in alpine and arctic environments are determined by abiotic conditions, but also by biotic interactions. In this thesis, I investigate interactions among plants and herbivory effects on plant community composition and plant functional traits in three different regions: Swedish Lapland, Beringia (USA/Russia) and Finnmark (Norway). Reindeer grazing was found to be extensive in southern Lapland and had limited effects on plant community composition and seedling germination. However, reindeer presence was found to influence plant functiona

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33

Küchenmeister, Frank [Verfasser], Johannes [Akademischer Betreuer] Isselstein, Klaus [Akademischer Betreuer] Dittert, and Nicole [Akademischer Betreuer] Wrage-Mönnig. "Sustainable grassland herbage production under drought stress - the role of plant species number and functional group composition / Frank Küchenmeister. Gutachter: Johannes Isselstein ; Klaus Dittert ; Nicole Wrage-Mönnig. Betreuer: Johannes Isselstein." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2013. http://d-nb.info/104441460X/34.

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34

Karlík, Petr [Verfasser], and Peter [Akademischer Betreuer] Poschlod. "How is the age of an anthropogenic habitat - calcareous grasslands - affecting the occurrence of plant species and vegetation composition - a historical, vegetation and habitat ecological analysis. / Petr Karlík ; Betreuer: Peter Poschlod." Regensburg : Universitätsbibliothek Regensburg, 2019. http://d-nb.info/1200209036/34.

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35

Ložytė, Aurelija. "Agrarinės aplinkosaugos priemonėmis paremtų tvarkymo metodų įtaka pievų augalų bendrijoms." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140526_082534-19976.

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Pievos yra svarbus agrarinio kraštovaizdžio komponentas, atliekantis įvairias ekologines, ekonomines ir socialines funkcijas. Ilgalaikiai augaviečių sąlygų pokyčiai, kuriuos lemia žmogaus ūkinė veikla, įtakoja pievų augalų būklę. Lietuvos kaimo plėtros 2007–2013 m. programoje numatyta priemonė pievų biologinės įvairovės išsaugojimui, kurios tikslas panaudojant ES lėšas mažinti neigiamą antropogeninį poveikį pievų augalų bendrijoms. Ištyrus pievų augalijos įvairovės ir ūkinės vertės skirtumus, sąlygotus skirtingos ūkinės veiklos intensyvumo, šio darbo tikslas įvertinti reglamentuotų, ES agrarin

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36

Broders, Kirk Dale. "Seed and Seedling Disease of Corn and Soybean in Ohio: The Role of Fusarium graminearum, Pythium species diversity, fungicide sensitivity, Pythium community composition, and soil properties in disease severity." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1228096392.

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37

Hess, Manon. "Restauration écologique des communautés végétales après éradication d'espèces invasives : Rôle de la dynamique de colonisation et des effets de priorité Using limiting similarity to enhance invasion resistance: theoretical and practical concerns Priority effects: Emerging principles for invasive plant species management Giving recipient communities a greater head start and including productive species boosts early resistance to invasion." Thesis, Avignon, 2020. http://www.theses.fr/2020AVIG0357.

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Les plantes invasives posent d’importants problèmes environnementaux et de santé publique, et leur contrôle est aujourd’hui un défi majeur. Elles rencontrent des conditions particulièrement favorables après des perturbations conduisant à une suppression du couvert végétal. La mise en place d’un couvert végétal séquestrant rapidement ces ressources parait alors une réponse probante pour réduire l’invasion. Néanmoins, les caractéristiques des communautés nécessaires pour exercer une résistance efficace dans les premières phases d’installation sont encore peu connues.Je me suis intéressée à deux

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38

Conley, Gary D. "Examining the Cover and Composition of the Successional Vegetation Mosaic of Pre-SMCRA Mined Landscapes in Southeast Ohio." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1357751096.

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39

Soest, Francien van. "Factors determining location and species composition of wet grasslands in Southwest England /." Utrecht : Royal Dutch Geographical Society [u.a.], 2005. http://www.loc.gov/catdir/toc/fy0710/2007385399.html.

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40

Aksamit, Dawn N. "Exotic Invasive Plants on Private Woodlands of Virginia: Effects on forest composition, structure, and wildlife habitat." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/30975.

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Exotic invasive plants have become a significant issue in the Southeastern United States for private landowners. These plants possess characteristics that allow for rapid growth and easy adaptation to many growing conditions, often outcompeting native vegetation and altering wildlife habitat, especially in disturbed areas. Disturbance, including access roads, trails, harvest sites, powerline corridors, and fence rows, is common on private land. Private landowners are often left to combat these problems without many monetary or expertise resources that are available to federal lands. Three

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41

Baril, Lisa Marie. "Change in deciduous woody vegetation, implications of increased willow (Salix spp.) growth for bird species diversity, and willow species composition in and around Yellowstone National Park's Northern range." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/baril/BarilL1209.pdf.

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Deciduous woody vegetation (DWV) in Yellowstone's northern range is a rare, but important habitat type. Including willow, alder, aspen, and cottonwood, DWV was limited in height and areal extent since the early 1900s. Since the mid-1990s; however, DWV has increased in height and areal extent in some locations. Previous studies regarding DWV change have focused on quantifying change in vegetation growth in areas of limited extent and none have quantified increased DWV growth at the scale of the landscape. Furthermore, no studies have evaluated the implications for increased growth of DWV for wi

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42

Sabol, Thomas David. "Effects of Western Juniper (Juniperus occidentalis) removal on avian species composition in shrub-steppe habitat in south-central Oregon." View full-text version online, 2005. http://soda.sou.edu/awdata/060221a1.pdf.

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Thesis (M.S.)--Southern Oregon University, 2005.<br>"A thesis submitted to the Department of Biology of Southern Oregon University in partial fulfillment of the requirements for the degree of Master of Science in Environmental Education." Includes bibliographical references (p. 36-50) Also available via Internet as PDF file through Southern Oregon Digital Archives: http://soda.sou.edu. Search Bioregion Collection.

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43

Salie, K. (Khalid). "The contribution of riparian vegetation to the species composition of the Jonkershoek Valley in Stellenbosch, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/49790.

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Thesis (MSc)--University of Stellenbosch, 2003.<br>ENGLISH ABSTRACT: Many authors express the value of riparian vegetation in terms of the function and number of species per unit area. Although riparian vegetation is confined to narrow bands of plants along watercourses, kloofs and gullies, it is a specialised habitat for many species. To determine the contribution of riparian vegetation to the species richness of the Jonkershoek Valley, Western Cape Province, South Africa, a checklist was compiled, by referring to past research and to the PRECIS national database for the South African f

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Sheldon-Sayer, Lynne. "The vegetation of Maud Island, Marlborough, New Zealand." Lincoln University, 2006. http://hdl.handle.net/10182/1707.

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Maud Island (Te Hoiere - "a long paddle or mighty pull") is a moderately sized island of 309 hectares, located in the Pelorus Sound (41°, 02 'S, 173° 54 'E) Marlborough, at the north-east end of the South Island of New Zealand. It has a long history of human modification and impacts since its colonisation by Maori and early Europeans. The vegetation of Maud Island has been studied in the 1980's and again in the early 1990's. The objectives of this study were to (1) describe how the vascular plant communities vary in species composition across Maud Island, (2) determine which environmental fact

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De, Lacy Peter James Gerard. "Woody species composition and congregant appreciation of the cultural and spiritual services provided by cemeteries and church gardens in Grahamstown, South Africa." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1016401.

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Urbanization has increased rapidly throughout the world. The densification of urban areas has greatly reduced the number of natural areas occurring within the urban environment as well as impacting the ecosystem services that these areas provide. Urban greening and sustainable practices have been advocated as a means to once again provide the urban population with ecosystem services. Sacred natural areas that occur in surrounding forest, temple and cemetery sites have been known harbour a variety of biological diversity, as well as provide people with a number of cultural and spiritual benefit

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Teske, Johanna Kavanagh. "Connecting the Dots: Investigating Planet Formation and Composition Through Observations of Carbon and Oxygen Species in Stars, Disks, and Planets." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/318831.

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What physical processes and sources of material contribute to exoplanet compositions? Specifically, what roles do the protoplanetary disk composition and structure, and host star abundances play in the different stages of planet formation? In this thesis, beginning with a brief literature review in Chapter 2, I trace oxygen and carbon species through these stages to inform how, when, and where planets form. In Chapter 3 I describe a study of the molecular emission from the warm inner disks of T Tauri stars, where terrestrial planets likely form. I report moderate correlations between HCN emiss

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DeGomez, Tom, and Melanie Lenart. "Management of Forests and Woodlands (Climate Change and Variability in Southwest Ecosystems Series)." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2006. http://hdl.handle.net/10150/146920.

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4 pp.<br>This is part of a series of publications on climate change and forests/woodlands<br>Climate change may have dramatic effects on Arizona's forests and woodlands. Wildfires and insects may become of greater concern. Plant species will likely shift in elevation to adapt to the warming conditions.

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Guthrie, Ruth J. "Patterns of invertebrate distribution and abundance on Cordyline australis in human-modified landscapes." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/1235.

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Fragmentation of forest habitat by urban and rural development has had profound effects on the distribution and abundance of many native species; however, little is known about the ecological processes driving patterns in community structure (species richness and composition) of host-specialised herbivores in modified habitats. I examined patterns in community structure of 9 specialist and 19 generalist invertebrate herbivores of cabbage trees (Cordyline australis Laxmanniaceae) across a highly-modified landscape. I found that, although species richness of specialists was highest in forest sit

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Xu, Jun. "Quality evaluation of Dendrobium species based on the analysis of multiple components." Thesis, University of Macau, 2010. http://umaclib3.umac.mo/record=b2454978.

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Monona, Ewumbua Menyoli. "Evaluating Standard Wet Chemistry Techniques and NIR Spectroscopic Models for Determining Composition and Potential Ethanol Yields of Multi-Species Herbaceous Bioenergy Crops." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/29855.

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Herbaceous perennials represent a considerable portion of potential biomass feedstocks available for the growing bioenergy industry. Their chemical composition and biomass yields, which are important in determining ethanol potential on an area and mass basis, vary with plant variety and type, environment, and management practices. Therefore, a study was conducted to assess the variability of lignin and carbohydrate content, biomass yields, and theoretical ethanol yields on an area basis among different herbaceous perennial species combinations grown in Minot (2008) and Williston (2008, 2009, a

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