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 19 of 19 for “"biological integrity"”.
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Development Of An Avian Index Of Biological Integrity For Kentucky Wetlands
… wetland habitats. I developed an avian index of biological integrity (IBI) for wetlands of Kentucky as an intensive assessment method to supplement an existing rapid assessment method used in regulatory programs. Birds are useful indicators because they are sensitive to environmental changes, …
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Applications of Biological Integrity within the National Wildlife Refuge System Region 5
… and subsequent implementation of 601 FW 3: Biological Integrity, Diversity and Environmental Health Policy (hereafter, the “Integrity Policy”) represented a groundbreaking paradigm shift for refuge management. NWRSIA set forth a “mission for the System, and clear standards for its …
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Streams in a changing landscape : identifying candidate reference reaches to assess the physical and biotic integrity of Missouri's wadeable streams
… the ability to predict areas of high and low biological integrity to inform management decisions and meet conservation needs. Previous efforts to quantify anthropogenic disturbances to aquatic systems have resulted in indices lacking the ability to identify specific stressor impacts, describe …
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Structural Biology in Cellular Environments Using Sensitivity Enhanced NMR
… Chapter 1 provides an overview of in-cell NMR in biological systems and intrinsically disordered proteins. A brief primer of NMR, DNP and EPR is also provided in this chapter. Chapter 2 describes the development of methodology to maintain biological integrity of mammalian cells during DNP NMR. …
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Correspondence Between Aquatic Ecoregions and the Distribution of Fish Communities of Eastern Oklahoma
… spatial classification for the development of biological assessment methods and biocriteria. I used indirect ordination and classification to identify groups of sites that support similar fish communities. Although correspondence was observed between fish assemblages and three montane …
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Developing Techniques to Quantify Phenological Development of Smooth Brome (Bromus inermis Leyss.): Sampling Variability
… health and restoration or maintenance of biological integrity in native prairie systems.
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Influence of nature preserves on macroinvertebrate assemblages, water quality, and habitat quality along two urban streams
… and a benthic macroinvertebrate index of biological integrity (MIBI) increased within the preserve sites for Poplar Creek, however there was no consistent improvement in biodiversity observed in Spring Creek. Additionally, percentage of Ephemeroptera, Trichoptera, and Plecoptera (%EPT) …
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Developing a rapid method for assessing the physical stability of streams in Minnesota's Agassiz beach ridges
… consideration of water chemistry or indices of biological integrity. </p><p> The final stream assessment is referred to as SAMBR (Stream Assessment for Minnesota’s Beach Ridges) and is based on seven indicators that are used to rate stream segments as poor, fair, good, or very good. The …
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Satellite-based assessment of invasive vegetation in Lake Chad Basin, West Africa
Invasive plants are a huge threat not only to the biological integrity of the world's natural ecosystems but also the economies that are supported by those ecosystems. Today, governments worldwide are spending millions of dollars to address this issue. Invasive species pose great danger to the …
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Quantifying soil particulate organic matter using image analysis
… significant contributions to soil structure and biological integrity. Conventional laboratory methods for assessing POM include size and density fractionation, processes that are laborious and time-consuming. This study evaluated the potential for a rapid image-based POM quantification method. …
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Up an Urban Creek: The Role of Development Patterns in Stream Health
… communities, the Benthic Index of Biotic Integrity (BIBI), were used to assess stream health in twenty-two moderately-urbanized drainage basins (13 to 15 percent impervious area) in the Puget Sound lowlands. Land cover patterns in the basin and the riparian area (100 m) were calculated …
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Investigation and design of SERS active nanoparticle assemblies via biological interactions
… synergic theme of studying different types of biological interactions using SERS has come to the forefront of this research. Novel nanotag synthesis has been detailed using a one-step functionalisation methodology. The stability of these nanotags has been investigated and found to be on par …
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An analysis of the contamination by and effects of highway- generated heavy metals on roadside stream ecosystems
… whether metals contamination was affecting the biological integrity of the study sites. These were: benthic macroinvertebrate diversity and density; the percentage of the aquatic insect community that was composed of chironomids; and fish community diversity, density, and biomass. Only benthos …
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Modelling Stream Metabolism and Fish Biomass in Headwater Streams of the Eastern Cascades Mountains
Headwater streams are important for the biological integrity of river systems because they represent most of the length of the hydrological network and control the downstream flow of energy and nutrients to larger river systems. Headwater streams are culturally and economically important because …
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Effects of Watershed and Habitat Conditions on Stream Fishes in the Upper Roanoke River Watershed, Virginia
… into metrics commonly used in indexes of biotic integrity and created a multimetric index called the mean metric score to represent fish communities at sites. Fish variables and metric values were compared with stream habitat and watershed variables to determine primary influences on fish …
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Levels of Dissolved Solids Associated with Aquatic Life Effects in Headwater Streams of Virginia's Central Appalachian Coalfield Region
… squares and quantile regression techniques. Biological effects, as defined by VASCI scores indicating stressed or severely stressed conditions, were observed with increasing probability from 0% at ≤ 190 mg/L TDS to 100% at ≥ 1,108 mg/L TDS, with 50% probability of effects observed at 422 mg/L …
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Biostability In Drinking Water Distribution Systems Study At Pilot-scale
… can be practically used by utilities to control biological stability in their distribution systems. Use of less reactive (i.e. with less chlorine demand) pipes is recommended in order to prevent residual depletion and subsequent bacterial proliferation.This study is investigated biofilm growth …
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Influence of riparian forest and agricultural land use on community structure and ecosystem function in headwater streams
… may be insufficient for restoring stream biological integrity in highly degraded watersheds. I examined nine headwater streams that varied in the amount of riparian forest and watershed agriculture to determine the extent to which riparian forest buffers can mitigate the effects of …
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Novel technologies for microalgae cultivation and subsequent lipid extraction
… of potential invasive crops that may disrupt the biological integrity of local ecosystems and important ecological areas (Scarlat et al., 2008; RFA, 2008). However the main drawback of second generation biofuels is that they cannot be produced at a rate which coud meet the growing energy demand of …