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 “"Native forest"”.
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Growth of native forest on selected Illinois soils
Open Restriction set for Item 119635 on 2021-10-22T17:54:12Z with date null by eliasbh2@illinois.edu.
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Mortality of native forest vegetation in the Kaimai ranges
… 40 years and affects a wide range of species and forest types. The mortality occurs above 550 m altitude and on each prominence has a lower limit which corresponds closely with the predominant cloud zone in each area. The severity of the damage ranges from complete mortality of canopy species to a …
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Native forest tree conservation in tropical agroforests: Case study of cacao farms in the Atlantic Forest of southern Bahia, Brazil
Agroforests are model systems for ecological conservation in tropical agricultural landscapes because they integrate biodiversity conservation and rural livelihoods. Whether agroforests are long-term solutions for conserving biodiversity in agricultural landscapes may depend sapling regeneration of …
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The impact of pine plantations and alien invertebrates on native forest and fynbos invertebrate communities in Table Mountain National Park
… and exotic pine plantations threaten and reduce native species richness. This study frames invasion ecology theory in a conservation context, and examines the impact of planting and felling pine on litter invertebrate communities, by comparing invertebrate diversity between pine plantations and …
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Effects of native forest and pastoral land use on the population dynamics and trophic role of the New Zealand freshwater crayfish Paranephrops planifrons (Parastacidae)
Deforestation and conversion to pasture of over 50% of land area has affected the water quality, physical habitat, and fish and benthic invertebrate communities of New Zealand streams, but the impact of land use change on crayfish populations is unknown. The population dynamics, growth, and diet of …
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The effect of native forest dynamics upon the arrangements of species in oak forests-analysis of heterogeneity effects at the example of epigeal arthropods
… of epigeal spiders was studied in a natural forest and in a managed forest. Additionally the effects of small-scale microhabitat heterogeneity of managed and unmanaged forests were determined by analysing the spider assemblages of three different microhabitat structures (i. vegetation, ii. …
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Exotic Bird Invasion Into Forests of Hawaii: Demography, Competition, and Seed Dispersal
… did have a strong and conspicuous impact on native and non-native plants. In an ecosystem where most native frugivores are extinct, introduced birds dispersed all common native plants in these forest sites but non-native plants were infrequently eaten and dispersed. Furthermore, introduced …
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Using a new monitoring framework for Regional Councils to assess the integrity of prioritised ecosystems in Hawke’s Bay farmland : A thesis submitted in partial fulfilment of the requirements for the Degree of Masters of Applied Science at Lincoln University
… sustainability of biodiversity in small native forest fragments on privately-owned lowland rural land is threatened by agricultural intensification, introduced pests, inadequate fencing, and species-area effects. Biodiversity monitoring of private land plays an essential role in …
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Vegetational change resulting from forest conversion in the central Piedmont of Virginia and their implications for wildlife
Conversion of natural forest to loblolly pine plantations has become a common practice on commercial forest land in the central Piedmont of Virginia. To gain insight as to bow habitat conditions for wildlife vary over time, vegetation composition and structure were quantified in 21 converted stands …
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Understanding the role and impact of introduced honey bees in a submontane indigenous forest ecosystem
… in agricultural landscapes, as well as in native ecosystems. While this has obvious benefits for economy and industry, the impacts on sustainability of native ecosystems are less easy to discern. Honey bees (Apis mellifera) have a suite of potential impacts, both positive and negative, on …
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Effects of plant invasions on ecosystem processes: Linking above- and below-ground resource-use strategies of native and invasive species in Eastern U.S. forests
<p>Despite the increasing number of non-native invasive species worldwide and their potential impacts on ecosystems, the mechanisms that invaders alter ecosystem nutrient processes remain elusive. Invaders are often more productive than native species which suggests invaders may have different …
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Thresholds for sustainable regeneration in urban restoration plantings in Hamilton City, New Zealand
Urban forest patches have unique environmental and landscape characteristics which may influence the restoration of native plant communities. Urbanisation can lead to a drier and warmer climate, a prevalence of exotic seed sources and isolation from remnant native forest seed sources. This research …
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Quantificação de carbono e emissões de gases de efeito estufa sob diferentes tratamento do solo no cerrado brasileiro
… Verde, Goias, Brazilian Cerrado. The soil of the native forest was also evaluated by reference to agricultural areas. We evaluated the physical, chemical properties and the distribution of aggregates on soil, microbial biomass, carbon and nitrogen (N) storage, the emissions of CO2 and nitrous …
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Intensification of agriculture and livestock based on low carbon technologies in the Amazon and Atlantic Forest
The Amazon and the Atlantic Forest are Brazilian biomes that have undergone intense land use and cover changes, marked by the loss of native forest and the expansion of agriculture and livestock. These are areas with potential use for intensification based on low-carbon technologies, but this …
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Degradação microbiana de ácido cítrico em solo contaminado por chumbo
… Thus the use of chelating presents as an alternative to maintain high levels of this metal in the soil solution. Thus, the present study aimed to evaluate laboratory conditions on the ability of soil microbes to decompose the citric acid used as complexing metal ions in the soil. The global …
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Development of Ecosystem Structure and Function on Reforested Surface-Mined Lands
… coalfield disturbs landscapes. Post-mining reforestation efforts now achieve successful reestablishment and growth; however, it is unclear whether reforestation efforts also restore the native forest ecosystem functions. We quantified rates of return of key ecosystem functions and structural …
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Barrier Effects Of Roads And Traffic On Animal Occurrence, Space Use, And Movements
… edge, and gap avoidance. We used an endangered forest obligate, the Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis), as our study organism to assess effects of traffic noise on animal occurrence and demonstrated that traffic noise had spatially extensive and negative effects on …
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Walkability through Challenging terrain: Connectivity between Frederick Douglass National Historic Site and Anacostia Community Museum
… the monumental core, bringing people through the native forest, making more direct connections between the civic infrastructure, including the Frederick Douglass National Historic Site and the Smithsonian's Anacostia Community Museum. It shows that expanding the notion of walkability to include …
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Biotic Interaction of Invasive, Early-Succession Trees and Their Effects on Community Diversity: a Multi-Scale Study Using the Exotic Invasive Ailanthus altissima and the Native Robinia pseudoacacia in the Mid-Appalachian Forest of Eastern United States
Invasive plants can displace native species, deteriorate native forest, and change plant communities and ecosystem functions. Native plant populations are fundamentally impacted by invasive species because of the interactions between invasive species and native plants. This study focuses on …
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Early Successional Processes of Experimentally-Reclaimed Mine Sites in Eastern Ohio and the Restoration of American Chestnut
… the Appalachian region of the Eastern Deciduous Forest. Federal law has required reclamation of mined sites to mitigate environmental hazards since the late 1970s. However, the methods typically utilized do not allow for a return to the forest cover found on these sites prior to mining. New …
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