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 27 for “"floristic composition"”.
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Geological Control of Floristic Composition in Amazonian Forests
… inventory; to use these methods to identify floristic patterns and their causes in western Amazonia; and propose new means to map floristic patterns in these forests.</p><p> Using tree inventories in the vicinity of Iquitos, Peru, I and a colleague systematically evaluated methods for rapid …
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The impacts of indigenous herbivore grazing over five years (2004 - 2008) on vegetation dynamics in four distinct vegetation types of the winter-rainfall Little Karoo
… in species richness, species and growth form composition, total cover and plant palatability in response to rest (fenced) and grazing (open) treatments was investigated in Sanbona Wildlife Reserve over five years (2004-2008). This reserve is over 55 000 ha and has four dominant vegetation …
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Primary plant succession at Franz Josef Glacier: Aspects of predictability and ecophysiology: A dissertation submitted in partial fulfilment of the requirement for the Degree of Bachelor of Horticultural Science (Honours) at Lincoln University
… sites, aged 45 to 85 years in the present study. Floristic composition was compared to composition recorded on the same sites 30 years previously. Sites in the present study were also compared to sites in the previous study, that were of equivalent age. Floristic composition did not appear to …
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SPATIAL VARIABILITY IN SPECIES COMPOSITION IN NEOTROPICAL MONTANE TREE COMMUNITIES
… characteristics, diversity, and floristic composition across the elevational gradient and at tree line. Thirty –six 0.1–ha tree plots were installed (1) along three different elevational transects in tropical montane cloud forest (TMCF) between 1500 and 3600 m and (2) …
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Initial Revegetation Of Small But Severely Disturbed Areas In The Oak-Hickory Forest Of Southwest Missouri
… of the revegetation process included relay floristics and intitial floristic composition. The role of random seed dispersal in the revegetation process is indicated.
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Understory vegetation patterns in oak savannas of the Missouri Ozarks
… communities in Missouri. Understanding the floristic patterns which characterize savannas is important for the management and restoration of these rare communities. The purposes of this investigation were to describe the plant communities and identify characteristic species for savannas on …
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MODELLING THE INTERACTION BETWEEN WILD AND CULTIVATED SPECIES.
… climate change by explicitly considering their floristic composition, whereas the fourth chapter presents initial results on the effects of grazing and climate change on the productivity and floristic composition of pasture communities. Chapter 5 shows a new model of interactions among olive …
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The effect of hydroperiod on seed banks in semi-permanent prairie wetlands
… 1986 from wetland P1 to determine if seed bank composition changed annually without a change in mature vegetation. Seed bank composition was determined by placing soil samples in a greenhouse, then counting and identifying emerged seedlings. As a check against the seedling emergence method, …
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The dynamics of the Afromontane forest remnants in the Southwestern Cape
… in the southwestern Cape and investigates the floristic and structural changes in vegetation composition across the indigenous forest ecotone. The dynamics of forest-fynbos boundaries of differing post-fire age are compared and patterns of vegetation change from forest to fynbos are related to …
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A contribution to the vascular flora of the Sequatchie Valley within Sequatchie County, Tennessee
… elevated Cumberland Plateau, suggesting that the floristic composition of the valley may be different from the surrounding region. Although several previous floristic studies have been conducted on the plateau surface, very little attention has been given to the Sequatchie Valley prior to the …
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The vascular flora of the Tennessee River Gorge, Hamilton and Marion counties, Tennessee
… Cyperaceae and Fabaceae. In addition to the floristic component of this work, a phytogeographical analysis was conducted for the TRG and 12 other Cumberland Plateau floras. This analysis revealed that the floristic composition of the central and southern Cumberland Plateau in Tennessee …
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ΔΟΜΗ, ΔΥΝΑΜΙΚΗ ΚΑΙ ΔΙΑΧΕΙΡΙΣΗ ΤΩΝ ΕΡΗΜΩΝ ΑΣΦΟΔΕΛΩΝ ΤΗΣ ΘΕΣΣΑΛΙΑΣ
… LOWLAND PASTURES OF THESSALY. THEREFORE: THE FLORISTIC COMPOSITION OF ASPHODEL DESERTS IN THESSALY WAS RECORDED AS WELL AS ITS SEASONAL FLUCTUATIONS AND THE MEAN DENSITY (8 IND/M2) AND THE DISTRIBUTION PATTERN OF A.MICROCARPUS WERE DETERMINED. THROUGHOUT THE PERIOD OF A YEAR, THE PHENOLOGICAL …
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Floristics, Conservation, and Restoration of Virginia's Piedmont Grasslands
… four research objectives: 1) Characterize the floristic composition of native grasslands; 2) Assess the impacts of agricultural land use and restoration on grassland bio- diversity; 3) Determine the barriers to grassland regeneration through the comparison of restoration techniques; and 4) …
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The Spatial and Temporal Ecology of Seed Dispersal by Gorillas in Lopé National Park, Gabon: Linking Patterns of Disperser Behavior and Recruitment in an Afrotropical Forest
… locations promote variation in the combinations: composition and abundance) of the seed species dispersed to different microsites.</p><p>The clustered distribution of nest-sites leads to clumped and spatially restricted seed deposition patterns. Recruitment in gorilla-dispersed seed species …
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Tree community assembly and biogeochemical processes along an elevational gradient in western Panama
… are expected to influence tree diversity, floristic composition, nutrient and C cycling. My dissertation evaluates how edaphic factors, climate, and mycorrhizal associations drive tree community assembly, C storage, and biogeochemical processes along environmental gradients. Using a set of …
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Lake Sediment-Based Reconstructions of Late-Holocene Lowland Environments of Dominican Republic and Barbuda, Northern Caribbean
… L. Alejandro’s sediments and revealed changes in floristic composition at the study site through time. Pollen of maize (Zea mays) and Prosopis juliflora in sediments representing ~1760 CE document human subsistence agriculture and disturbance to tropical dry forest in the watershed.
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THE SPATIAL CHARACTERISATION OF TRANSITIONAL AREAS BETWEEN PLANT COMMUNITIES: A CASE STUDY FROM UPLAND BRITAIN
… of structure (spatial pattern and variability in floristic composition) but explanation of these patterns is only possible through an understanding of function (vegetation dynamics). Pilot studies determined an appropriate methodology for studying transitional areas. The approach progressed from a …
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Effects of nutrient limitation on understory communities in a tropical forest
… is known about the factors influencing fern floristic composition and functional traits in montane tropical forests. My dissertation compares composition variation and decay-rates between terrestrial ferns and understory palms, since the extent to which their resource needs overlap has not …
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