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.
Results
Showing 1 to 20 of 48 for “"vegetation patterns"”.
-
Understory vegetation patterns in oak savannas of the Missouri Ozarks
… 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 different …
-
Vegetation patterns and plant reproductive processes in the succulent Karoo
This thesis focuses on vegetation patterns and plant reproductive processes at the Tierberg Karoo Research Centre (33°1 0'S, 22°17'E) in the semi-arid southern Succulent Karoo, South Africa. It begins with an investigation into the roles of soil properties and competition in explaining variation in …
-
The effects of fragmentation of South Coast Renosterveld on vegetation patterns and processe
… investigates the effects of fragmentation on vegetation patterns and processes of South Coast Renosterveld at three hierarchical levels. South Coast Renosterveld is a grassy shrubland derived from shales on the coastal forelands of the Western Cape Province, South Africa. The area forms part …
-
An environmental history of the Cederberg : changing climate, land use and vegetation patterns
… last century and how these changes have affected vegetation patterns. Along with a description of the major geological, climatic and vegetation gradients in the study area, changes in rainfall, temperature, A-pan evaporation and fire regimes over the 20th century are analysed from official …
-
Lowland savanna of southeastern Iowa: historical and modern vegetation patterns and implications for management
… thesis was to assess both historical and modern vegetation composition and structure of lowland savannas and to determine the success of recent management of a lowland savanna remnant. Lowland savanna distribution, composition, structure, and possible flood driven disturbance regime were compared …
-
Vegetation patterns along the Middle Fork of the Flathead River, Glacier National Park, Montana
Distribution of riparian vegetation on riverine floodplains is dictated, in part, by species' response to flood disturbance. Plant position can be related to frequency, intensity and duration of flooding, with species most tolerant of flooding occurring in lower discharge classes and those less …
-
Anthropogenic modification of the natural fire landscape and its consequences for vegetation patterns on the Cape Peninsula
… fire and how urban development may alter natural patterns is particularly important in areas where alternate ecosystem states occur at fine spatial scales. The Cape Peninsula, South Africa, is a one such region where fire-sensitive forest patches occur interspersed in a sea of fire-dependent …
-
A historical perspective on recent landscape transformation: integrating palaeoecological, documentary and contemporary evidence for former vegetation patterns and dynamics in the Fleurieu Peninsula, South Australia / Sophia Anastasia Bickford.
… documented historical records and remnant vegetation were investigated in order to construct a multi-scaled history of vegetation pattern and change in the Fleurieu Peninsula, South Australia over the last c. 8000 years. Aims to better understand post-European landscape transformation and …
-
Part A: A probabilistic framework for assessing vulnerability to climate variability and change: the case of the US water supply system. Part B: Dynamics of self-organized vegetation patterns
To view the abstract, please see the full text of the document.
-
A high-resolution palaeoecological study of land use change during late prehistory on Exmoor
… and the impact of human land management on the vegetation patterns in certain areas in the UK and Northwest Europe. The need and importance for higher resolution vegetation reconstructions has long been recognised in the wider literature. The main focus of this research is to further understand …
-
The nature and significance of microtopographic effects on vegetation succession on selected glacier forelands, Jotunheimen and Jostedalen, Norway.
… prevailing micro-environmental factors and vegetation, with particular reference to succession, on six glacier forelands at successively higher altitudes. The study is successful in answering the three main aims of the thesis: by analysing the specific environmental parameters comprising the …
-
CHARACTERIZING PATTERNS IN TEXAS GULF COAST BEACH DUNE PLANT SPECIES COMPOSITION
<p>Regional vegetation patterns of Texas beach plant communities were analyzed using cluster analysis, ANOSIM, SIMPER, NMDS, and ISA for fives zones representing the foredune complex of twenty Gulf Coast beaches. ANOVA revealed that zones differ in terms of percent bare sand, percent vegetative …
-
The demographic impacts of browsing on woody plants in savannas : from individual branches to whole populations
… can potentially have drastic impacts on vegetation patterns. This is particularly true in African savannas where many large browsers persist at high densities. Most of the theory and models outlining mechanisms of impact on plants and predicting responses are framed in terms of biomass …
-
Towards reconstructing cities with AI: a novel machine learning approach for automated archaeological surveying and preservation by learning canopy structures
… surveys by revealing features beneath dense vegetation, but manual interpretation remains labor-intensive. This study introduces an Automated Archaeological Survey Method (AASM) that utilizes machine learning to analyze tree canopy structures as proxies for underlying archaeological features. …
-
Vegetation gradients in Southern Cape mountains
… This study arose from the need to define local vegetation patterns and their interdependence with animal life, climate and soil as a necessary prerequisite to vegetation mapping and Fynbos is part of the diverse and complex Cape Floral Kingdom. Field taxonomy in fynbos is often problematic for …
-
Spatio-temporal distribution of grass and shrubs at the ecotone between an arid grassland and succulent shrubland : ecological interactions and the influence of soils
This thesis presents ecological investigations of vegetation at an ecotone between the Namaqualand shrublands and Bushmanland arid grassland at the climatic transition between the predominantly winter rainfall Succulent Karoo and the predominantly summer rainfall Nama-Karoo biomess. The work …
-
AN INVESTIGATION OF HYDROGEOLOGIC, STRATIGRAPHIC, AND STRUCTURAL CONTROLS ON ACER GRANDIDENTATUM COMMUNITIES IN A KARST LANDSCAPE, OWL MOUNTAIN PROVINCE, FORT HOOD MILITARY INSTALLATION, TEXAS
… with military training, maintaining much of the vegetation in early succession. This study investigates thelithologic, stratigraphic, and structural controls on the hydrologic, hydrogeologic, and geomorphologic evolution of the Owl Mountain Province as expressed by mesic vegetation communities, …
-
Vegetation community change over decadal and century scales in the North Carolina piedmont
This thesis examines vegetation community change at two temporal scales in the Piedmont of North Carolina. Using long-term plots in the Duke Forest, I examine decadal-scale changes in community composition of the forest understory and shed light on the potential drivers of that change. Using …
-
The macro-charcoal signature in Bwabwata National park, north-east, Namibia: Calibrating surface macro-charcoal with environmental variables
Fire is a major driver of vegetation patterns in the savanna biome of southern Africa and is hypothesized to allow for the tree-grass co-existence. However, to better understand the drivers of the savanna vegetation structure, more research is required. Furthermore, fire management can benefit …
-
4000 years of environmental and climate change at Eilandvlei : a palynological investigation into the late Holocene palaeoenvironment of the Wilderness Embayment
… albeit short term, fluctuations in climate and vegetation patterns along the Southern coast of South Africa and adds to the inadequate records available for the region thus far.
Page 1 of 3