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 9 of 9 for “"Above-ground vegetation"”.
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Effect of land degradation on the above-ground vegetation and soil seed bank of a Rangeland in Kunene region Namibia
… such as Namibia. Degradation is affecting above ground vegetation and seed bank composition, hindering their recovery. To address this issue, it is crucial to assess land conditions at different levels and develop effective strategies for restoring degraded rangeland. The understanding of …
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Assessing Wetland Restoration on the Delmarva Peninsula using Vegetation Characteristics
… of Maryland and Delaware were surveyed for above-ground vegetation and seed bank community composition, annual biomass production, and vegetation carbon content (10 restorations from prior-converted cropland (aged 5-31 years), and 5 natural forested depressions). Within each wetland, …
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Pattern and process in South Coast dune fynbos : population, community and landscape level studies
The study aimed to explain vegetation dynamics in response to disturbance in a dune landscape comprising a mosaic and admixture of grassland, fynbos and thicket. A hierarchical approach directed investigations at the landscape, community and population levels, with emphasis on seed banks. The study …
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Initial Revegetation Of Small But Severely Disturbed Areas In The Oak-Hickory Forest Of Southwest Missouri
… to a ten centimeter depth, destroying roots and above ground vegetation. The areas differed primarily in one year increments since disturbance, through five years. Community development was observed, as characterized by 1) increasing number of species, 2) increasing ratio of woody species to …
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The functional ecology of Eastern Rûens Shale Renosterveld
… in the Overberg region of South Africa, is a vegetation type both critically endangered and poorly understood. Centuries of agricultural activity in the region has resulted in a landscape typified by fragments of pristine vegetation, in addition to communities in various states of degradation, …
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Mat Movement in Coastal Louisiana Marshes: Effect of Salinity and Inundation on Vegetation and Nutrient Levels
… types on the ocurrence of the dominant emergent vegetation was discussed.</p> <p>The main difference in physical structure of the two marsh types was the presence of a mineral, non-buoyant layer at 25-45 cm depth in the rooted marsh, which could serve as an anchor for the overlying highly organic …
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Riparian vegetation and the soil seed bank five years after dam removal on the Elwha River, Washington
… the fluvial processes that drive riparian vegetation communities. Dam removal may reverse these effects; however, very few studies have examined the response of riparian vegetation to large dam removal and associated disturbances, such as the release of sediment. Understanding how dam …
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Plant communities along Irish roads: the impact of humans and potential to improve biodiversity
The vegetation, soil nutrients and soil seed banks of road verges (located along a national road scheme in the south of the Republic of Ireland) were examined along with their adjacent fields plus reference points in the non-road landscape. In addition, a controlled experiment was undertaken to …
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Floating wetlands for urban stormwater treatment
… changes in phosphorus distribution, harvest of above-ground vegetation is recommended to be conducted twice a year in June and September. Planted perennial macrophytes successfully adapted to stresses of the low dissolved oxygen (DO) concentrations (minimum: 1.2 mg/L), ice encasement, and …