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 21 for “"Biotic community"”.
-
Water quality and biotic community response to an urban – rural land-use gradient in the Lake Simcoe watershed
… derived stressors have on water quality and biotic communities requires further investigation. The research presented here explored the links between land-use, periphyton nutrient content and biomass, and invertebrate response in lotic surface waters in the LSW. To infer the contribution of …
-
Factors Influencing the Distribution, Growth and Infectivity of Casuarina-Infective Frankia
… between the Frankia isolate and the soil biotic community, resulting in an increased infectivity of the Frankia isolate.
-
The impacts of century-old, arsenic-rich, mine tailings on multitrophic level biological assemblages in lakes from the Cobalt, Ontario, Canada region
… concentration is not a significant driver of biotic community change across the study lakes, suggesting that other variables are more important in the structuring of the biological community in this region. These results suggest that while legacy contamination has greatly increased arsenic …
-
The macrobenthos of the Mlalazi estuary: KwaZulu-Natal
… the purpose of a masters study, of the benthic community was initiated during the period 1989-1991 but unfortunately was never written up or published. Additional sampling in the Mlalazi estuary was carried out from August 1999 to July 2000 at the same six sites where the 1989-1991 samples were …
-
Effects of herbivory as an ecological constraint of willow growth at a restored riparian corridor
… vegetation. The dynamic conditions and diverse biotic community supported by riparian ecosystems can present numerous constraints to restoration efforts. This study investigated stunted growth of arroyo willow (Salix lasiolepis) cuttings planted along the banks of Redwood Creek as part of the …
-
Assessing Macroinvertebrate Community Recovery in Post Restoration Silver Bow Creek, Montana
… This analysis evaluates changes in benthic biotic community composition throughout the period of record (1986 to 2009). Transformations of historical data were necessary to standardize community information and calculate indices of biotic integrity. A multivariate method, Classification …
-
Assessing Macroinvertebrate Community Recovery in Post Restoration Silver Bow Creek, Montana
… This analysis evaluates changes in benthic biotic community composition throughout the period of record (1986 to 2009). Transformations of historical data were necessary to standardize community information and calculate indices of biotic integrity. A multivariate method, Classification …
-
Towards Eco-Dharma: The Contribution of Gandhian Thought to Ecological Ethics in India
… (firmness in promoting truth), can direct community action that promotes responsible economic structures and the well-being of the biotic community and the environment. Eco-dharma calls for solidarity, constructive resistance, and ecologically and economically viable communities. The …
-
The Commonweal of Life: Aldo Leopold and Land Health
… integrity, stability, and beauty"" of the ""biotic community."" Central to Leopold's ethic was his idea of ""land health,"" an ideal that Leopold clarified over time and proposed as an overall, much-needed goal for conservation work. Land health was the culmination of Leopold's mature …
-
Assessing nearshore water quality and biological condition in the Kawartha Lakes using a community science approach
… the relationships between land use and the abiotic and biotic condition of the nearshore zone in the Kawartha Lakes. To examine Lake Scugog’s nearshore water quality patterns and relationship with land use, 12 volunteers collected water samples from spring to fall for three years. Land use …
-
Ecological patterns, community classification, and a comparison of approaches for predicting biological and habitat reference conditions in New Hampshire streams
… measured using specific criteria. Seven natural biotic community types primarily arranged along the longitudinal stream profile were classified. Geographic classifications based on ecoregions and watersheds poorly explained organism distributions and abundances. Organism distributions were …
-
The influence of an ecosystem engineer on nutrient subsidies and fish invasions in southwestern Montana
… how beaver modify ecological processes linking abiotic factors to changes in the surrounding biotic community. I investigated how beaver impoundments influence local food web processes, as well as impact native fish species threatened by nonnative invasions.</p> <p>I showed that beaver …
-
The influence of an ecosystem engineer on nutrient subsidies and fish invasions in southwestern Montana
… how beaver modify ecological processes linking abiotic factors to changes in the surrounding biotic community. I investigated how beaver impoundments influence local food web processes, as well as impact native fish species threatened by nonnative invasions.</p> <p>I showed that beaver …
-
Urban trees and biodiversity in Cork city
… with an observational-based approach. However, community-level analyses have shown significant variations in the taxa communities among the 6 sites (p<0.001 for all taxa). These data suggest that the type of urban site is significantly associated with biotic community composition. Additionally, …
-
Data-driven analyses of watersheds as coupled human-nature systems
… namely streamflow frequency and instream biotic integrity. We also aim to understand how the dominant controls of these emergent properties change through time. This study targets these needs by quantitatively linking natural and anthropogenic drainage area characteristics to flow …
-
The rooted state: Plants and power in the making of modern China’s Xikang Province
… nationalist discourse constructed the imagined community of the Chinese nation, and it was simultaneously a material practice by which settlers reconfigured the biotic community of soils, plants, animals, and human beings along the frontier. This dissertation shows that Kham’s turbulent …
-
Regenerative agriculture and landscape architecture: a promising partnership
… the human population and the rest of the biotic community requires a paradigm shift from industrialized agriculture focused on efficiency of human labor to regenerative agriculture focused on biodiversity. Regeneration of our agricultural ecosystems, involves attention to four fundamental …
-
Experimental testing and modeling of partial nitrification at different temperatures
… deterioration of water quality, and shifts of biotic community. Conventional biological nitrogen removal (BNR) processes consume high energy for nitrification and require external carbon for denitrification. Alternatively, partial nitrification is of interest as an emerging technology for its …
-
Marine alien species of South Africa : threats and opportunities
… communities by M galloprovincialis, changes in community structure on the rocky shore of Marcus Island and the sandy shore of Langebaan Lagoon were measured. In both habitats, the invasion significantly altered community composition. On Marcus Island the effects were focused within the …
Page 1 of 2