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 7 of 7 for “"arid grassland"”.
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Spatio-temporal distribution of grass and shrubs at the ecotone between an arid grassland and succulent shrubland : ecological interactions and the influence of soils
… 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 focused on the determinants of grass and succulent shrub vegetation characterising …
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Understanding Carbon Uptake Using Multi-Scale Novel Remote Sensing Techniques
… improve satellite-based GPP estimates. In a semi-arid grassland ecosystem, integrating SIF and the photochemical reflectance index (PRI) will improve the understanding of photosynthesis during extreme droughts. Overall, this research integrated multiple available remotely sensed proxies to improve …
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Soil Moisture Dynamics and Thresholds for Surface Energy Balance Regime Transitions: An Observational Analysis at a U.S. Grassland Site
… Thermometer (IRT) measurements at a semi-arid grassland site in Oklahoma, USA, I identify and analyze soil moisture drydown events. I estimate θ* by applying piecewise linear regression to the relationship between soil moisture and diurnal surface temperature range, isolating the …
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Targeted short-term nutrient reduction to manage Ventenata dubia an invasive winter annual grass: soil and plant responses
… applied to soils in a Pacific Northwest semi-arid grassland in early spring to stimulate microbial growth and temporarily reduce nutrient availability to the IWAG Ventenata dubia. Inorganic nitrogen was tracked throughout the experiment and plant and soil microbial community changes were …
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Fever, firepower, and flood: the transformation of the Missouri River bottomlands in the Dakotas 1804-2005
… which appears better suited to the semi-arid grassland ecosystem. A post-modern frontier landscape is emerging on the Northern Plains with many biogeographic features of the aboriginal landscape.
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Habitat and population dynamics of wolves and blackbuck in Velavadar National Park, Gujarat
… from February 1988 to December 1990. The semi-arid grassland habitat was dominated by perennial grasses like <i>Dichanthium annulatum</I> and <i>Sporobolus virginicus</i>. The grassland system seems quite resilient to droughts and grazing. Above-ground production is primarily dependent on …
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Effects of Plant Invasions on Birds Breeding In Desert Grasslands
… that once dominated desert and semidesert grasslands. These plant invasions have reduced the quantity and quality of habitat for many grassland-associated species, including grassland birds, which have declined more rapidly across North America than any other group of birds. Along gradients …