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 970 for “"biotic"”.
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Incorporating biotic interactions in phenology
… on the methodologies studying phenology and biotic interactions. The presented extensive review on the topic allowed the identification of four broad categories of studies that have explored biotic interactions within phenology research and revealed that phenological studies of seasons other …
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Radiactive particle biotic and abiotic processes
… different compartments. A protocol for the abiotic transformation of radioactive particles has been developed within the framework of EC and IAEA research projects and has been applied on a range of particles from various sites. Methods for the characterisation of single radioactive particles …
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Exploring Biotic Approaches in Performance Based Design
For any building, its façade provides the first layer of interaction with its environment, an optimum design can harness significant synergies while a linear design could considerably increase the energy consumption. As designers, we are required to make informed decisions and educate stakeholders …
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The Abiotic and Biotic Reduction of Bromate
This study demonstrated that non-biologically active GAC filtration cannot provide sustained bromate removal whereas BAC filtration can provide sustained removal under a wide variety of water quality conditions.
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Biotic pump of atmospheric moisture: A conceptual model
The Biotic Pump Theory, as described by Drs. Makarieva and Gorshkov (M&G), defines the mechanism by which water vapour is transported from areas of low evaporation to areas of high evaporation, conveniently termed “donor” and “acceptor” regions, respectively, and where only the latter exhibits …
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Abiotic and Biotic Factors Shaping Plant-Microbe Interactions
… of scientific understanding. Given that the biotic and abiotic contexts of ecological communities is rapidly shifting due to anthropogenic change, understanding the factors that shape plant-microbe interactions will allow us to make more accurate predictions of ecological interactions both …
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Biotic and abiotic mechanisms shaping multi-species interactions
… includes four data chapters that examine the biotic and abiotic mechanisms that shape multi-species interactions in both tropical and temperate ecosystems. The first three data chapters (Chapters 2–4) were completed within a Neotropical rainforest in Costa Rica and focus on one plant genus, …
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Soil Heterogeneity in Arid Shrublands: Biotic and Abiotic Processes
… to examining whole ecosystem processes. The biotic and abiotic processes that shape arid landscapes operate at different spatial and temporal scales but ultimately control soil moisture variability and ecosystem patterns and processes. This dissertation attempts to expand the canopy …
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Biotic and Abiotic Drivers of Plant-Pollinator Interaction Rewiring
… Rather, ecologists must consider how changes to biotic and abiotic conditions are likely to affect not only the organisms present in a community but also the interactions between them.
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Palaeoclimatology, stratigraphy and biotic responses in the middle Eocene
… Optimum (MECO) between ~39.5 and 41.5 Ma. New biotic records show that the MECO was accompanied by significant biotic shifts that suggest a shift from warm, oligotrophic surface waters to warmer, more productive surface waters during the MECO.
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Enhancing biotic mortality of the potato leafhopper, Empoasca fabae
<p>This dissertation quantified the population dynamics of E. fabae and developed a new management technique for this alfalfa pest. A two-year study monitored the number of E. fabae at 3 locations within alfalfa fields from mid-April to June and from adjacent tree/shrub species until July. Similar …
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Predicting Insect Herbivore Distribution Using Climatic and Biotic Variables
… These variations can be explained by abiotic variables such as precipitation, they can also be explained by biotic variables such as nutrient availability. Here I present two field observational and two laboratory experimental studies to better understand factors and mechanisms …
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Abiotic and Biotic Polymer Degradation to Inform Sustainable Design
… first chapter, I develop and apply a sequential abiotic (photodegradation and hydrolysis) and biotic degradation test to a diverse suite of 18 polymers, including novel polyhydroxyalkanoates polyesters, commercially available bio-based polymers (e.g., polylactic acid, poly-3-hydroxybutyrate), and …
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Biotic control of LNAPL longevity - laboratory and field- scale studies
… (SR) and methanogenic (MG) conditions. Biotic and abiotic loss rates were determined via tracking biodegradation products and hydrocarbons in column effluents and produced gasses over time. Furthermore, compositional weathering of LNAPL was evaluated. Loss rates with elevated sulfate …
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Biotic Integrity and Northern Pike Ecology in Eastern South Dakota
… and services in streams are impaired when their biotic communities are degraded by anthropogenic stressors. An index of biotic integrity (IBI) translates community structure into a standardized stream health score. Documenting stream health is important in the Northern Glaciated Plains (NGP) …
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Biotic Responses on Typha-monodominant Semipermanent Wetlands To Cattle Grazing
… grazing treatment was sufficient to alter the biotic state of emergent march compared to the un-grazed plots. Live and dead cattail stems decreased, residual litter depth and aerial coverage decreased, water and substrate temperatures increased, aerial coverage of thallophytes increased, …
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