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 48 for “"earthworm"”.
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Short Rotation Forestry and Earthworm Diversity: Impacts and Responses
… and its impact on soil fauna, of which the earthworm community is a major component. Earthworms have direct impacts on the soil biogeochemistry of SRF systems, and the tree species can impact on the associated earthworm community. The aim of this study was to investigate the effects of SRF …
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Chemesthesis in the Earthworm, Lumbricus terrestris: The search for TRP Channels
… there are no reports of TRP channels in earthworms. Earthworms, including Lumbricus terrestris, aerate and enrich soil providing a suitable habitat for plants. Hence, chemicals in the soil which repel earthworms could have deleterious effects on plant growth. Allyl isothiocyanate, a …
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Woodland Restoration on Landfill Sites: Earthworm Activity and Ecosystem Service Provision
… may also assist the establishment of sustainable earthworm populations, which in turn can further aid soil development through their burrowing and feeding activities. Despite these potentially mutual benefits, little research exists into CGW and earthworm interactions with trees on reclaimed land, …
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Evaluating the Hazard of Land Applying Composted Diazinon Waste Using Earthworm Biomonitoring
… consisted of two studies. The first used the earthworm species Eisenia foetida to evaluate the toxicity of soil amended with composted diazinon waste. The second study determined the bioavailability of delta-2-14C-diazinon and its degradation products to E. foetida in soil amended with …
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Earthworm dynamics in tallgrass prairies in the Ozark Highlands region of northwest Arkansas
… tallgrass prairies. Limited research exists on earthworm dynamics in mounded tallgrass prairies or prairie restorations, particularly in the Ozark Highlands region of northwest Arkansas. The objectives of this study were to i) evaluate the effects of soil moisture regime (SMR; aquic and udic), …
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The Potential of Coelomocyte Chemotaxis as an Immune Biomarker in the Earthworm, Lumbricus terrestris
… both random and chemotatic, were examined in the earthworm Lumbricus terrestris. Coelomocyte random migration patterns towards non-stimulatory, non-chemotatic solutions were described. Migration responses to immunostimulatory agents lipopolysaccharides (LPS), …
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Interactions with earthworm communities: a laboratory-based approach with potential applications for soil restoration
The role of earthworms in improving soil fertility and structure is widely recognised. As a result earthworms (often single species populations) have been deliberately introduced into pasture and arable land by man in attempts to improve plant production and into degraded land in order to bring …
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Earthworm populations found near Adelaide, and their influence on the fertility of the soil
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
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Earthworms in the Urban Environment: Can Population Augmentation Improve Urban Soil Properties?
… is often degraded by human activity. Because earthworms play a key role in soil health, augmenting earthworm populations in urban soils may improve tree performance. However, we know very little about earthworm ecology in highly urbanized soils. The objectives of our study were: (1) to assess …
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DEVELOPMENT OF A NANOCOMPOSITE SENSOR AND ELECTRONIC SYSTEM FOR MONITORING OF LOCOMOTION OF A SOFT EARTHWORM ROBOT
… a feedbackloop locomotion of a soft robotic earthworm is presented. The ultrathin and soft strain sensor based on a carbon nanomaterial and a low-modulus silicone elastomer allows for a seamless integration with the body of the soft robot, accommodating large strains derived from bending, …
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Species and Cultural Management of Earthworms on Golf Course Turf in Arkansas and Oklahoma
<p>As earthworms feed, they can egest soil and nutrient-rich aggregates (casts) on the soil surface. In low-cut turfgrass systems, such as golf course greens, tees, and fairways, surface casting can result in a muddy playing surface, ball roll issues, weed and pest invasion, reduced aesthetics, …
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An investigation into the growth and reproduction of the earthworm <i>Lumbricus terrestris</i> L. under controlled environmental conditions
Earthworm inoculation for soil amelioration has been shown to be valuable in a range of experiments. At present, inoculation on a large scale is limited by the supply of larger deep-burrowing species of earthworm. This work aimed to assess the feasibility of intensively producing deep-burrowing …
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Denitrification, Dissimilatory Nitrate Reduction, and Methanogenesis in the Gut of Earthworms (Oligochaeta): Assessment of Greenhouse Gases and Genetic Markers
The earthworm gut is an anoxic microzone in aerated soils, shows a high water content and high amounts of nitrite and organic carbon. These conditions are in marked contrast to those in the pre-ingested material (i.e., substrate) and ideal for microorganisms as those capable of fermentations, for …
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Uji in vitro pengaruh jenis tepung cacing tanah (Lumbricus rubellus dan Pheretima aspergillum) dengan variasi suhu pengolahan (50o C, 60o C, dan 70o C) terhadap penghambatan pertumbuhan bakteri Salmonella typhi
… ENGLISH: Based on the empirical experience, earthworm can made one wonder drug on human diseased, one of it typhus disease that coused by Salmonella typhi bacteria. It is predicted because earthworm body contain antimicrobial substance which is lysozyme, agglutinin, lytic factor, and …
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The microbial ecology of cow slurry in vermiculture beds
… attention was given to the effects of the earthworm on the decomposition and stabilisation of the slurry; and to the interactions between E. fetida and the microflora of the substrate. Assessment of the chemical and microbiological changes in cow slurry stored under forced aeration, and …
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Code Decomposition: A New Hope
… of teaching it given limited resources.</p> <p>Earthworm is a tool that generates unique suggestions on how to improve the decomposition of provided Python source code. Given a program as input, Earthworm presents the user with a list of suggestions to improve the functional decomposition of the …
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Influence of copper on resistance of Lumbricus terrestris to bacterial challenge
Earthworms, Lumbricus terrestris, were challenged orally and intracoelomically with two bacterial species, Aeromonas hydrophila and Pseudomonas aeruginosa, and mortality rates were observed. Neither were found to be particularly pathogenic at injected doses of up to 108 bacteria per earthworm. The …
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Scoping of Presence and Impacts of Tyre Wear Particles on Soil Systems
… Concentration of TWP derived elements in earthworm bodies and morphology of ingested TWPs were also examined. Additionally, soil samples were collected from farmland adjacent to highways in three different climatic regions of England to measure environmental TWP concentrations in farmland …
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