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The Effect Of Rock Creep On The Morphology Of Steep-Sloped Sections Of The Niagara Escarpment (Ontario), John Barlow
The Effect Of Rock Creep On The Morphology Of Steep-Sloped Sections Of The Niagara Escarpment (Ontario), John Barlow
Theses and Dissertations (Comprehensive)
The thesis addresses the post-glacial development of the Niagara Cuesta between Hamilton and Collingwood. Conventional thinking on the escarpment during the Holocene suggests that the present morphology developed rapidly following deglaciation due to periglacial processes (Straw, 1966/Tovell 1992). The disruption of the preglacial drainage pattern by drift has meant the escarpment has not been subject to extensive fluvial action along its base, resulting in an extremely slow rate of retreat (Bird, 1980). The concept that the escarpment is a relict feature therefore pervades the modem literature. The apparent motion of the blocks at the face of the escarpment (Hintz, I997) …
The Management Of Complex Sociobiophysical Systems: Ecosystem-Based Management And The Chesapeake Bay Program, Daniel Dennis Mccarthy
The Management Of Complex Sociobiophysical Systems: Ecosystem-Based Management And The Chesapeake Bay Program, Daniel Dennis Mccarthy
Theses and Dissertations (Comprehensive)
There are an entire class of entities for which conventional scientific understanding is necessary but not sufficient to comprehend. These entities are too complex for analysis and yet too organized for statistics. They exist in a dynamic balance between the ordered and the disordered. They are ecosystems and human institutions. They are complex systems. There is an emerging body of theory that is providing insight into the structures and dynamics that underlie such entities. Under the rubric of complex systems theory, catastrophe theory, chaos theory, hierarchy theory and the interrelated theories of self-organization have profound implications for the way understand …
Identifying Areas Of Concern For Regional Cumulative Effects Assessments In And Around Northern National Parks In Canada (Yukon), Jennifer L. Lenton
Identifying Areas Of Concern For Regional Cumulative Effects Assessments In And Around Northern National Parks In Canada (Yukon), Jennifer L. Lenton
Theses and Dissertations (Comprehensive)
This thesis uses a literature review of protected areas selection, park management, comprehensive regional land use planning, and cumulative environmental effects and assessment to develop a methodology that identifies areas with concentrations of social and/or ecological values in and around northern national parks. The proposed methodology involves two stages. First, a database of values is developed by taking an inventory of social and ecological values through exxtensive literature reviews, interviews, and consultation with the public. This database is then used in the second step to determine areas with concentrations of social and/or ecological values, or “value hotspots”, using a series …
Spatial And Temporal Patterns Of Fluvial Suspended Sediment Yield From Eastern North America, Catherine Treena Conrad
Spatial And Temporal Patterns Of Fluvial Suspended Sediment Yield From Eastern North America, Catherine Treena Conrad
Theses and Dissertations (Comprehensive)
A knowledge of spatial and temporal patterns of sediment yields and an understanding of the factors that determine those patterns have theoretical, environmental and socio-economic significance. To assess the change in sediment yields (in both space and time) a data base of 193 river gauging sites spanning the eastern provinces of Canada and eastern United States was compiled. The original source of the data was the United States Geological Survey data base (obtained from a Hydrosphere Data Inc. cd-rom) and Environment Canada (HYDAT) data base, which included stream discharge, sediment loads and basin areas, with record lengths of one year …
Examination Of The Role Of Macropores And Subsurface Drainage In The Delivery Of Nitrogen Trioxide-Nitrogen To A Small First-Order Agricultural Stream In Southern Ontario, Abraham House
Theses and Dissertations (Comprehensive)
Agricultural practices may result in nitrate losses, diminished surface water quality and widespread groundwater aquifer contamination. Many works have identified preferential flow through macropores as an important feature that may increase nitrate losses. Subsurface drainage collectors may intercept preferential flow and indicate changing unsaturated/saturated processes. Antecedent conditions are important in determining runoff response. It is unclear how tile drains modify the antecedent soil moisture regime and water tables in near stream areas. Vegetated riparian buffer zones found beetween agricultural fields and watercourses may attenuate nitrate in shallow groundwater pathways. However, little work recognizes the close proximity of buffer strips and …
Killbear Provincial Park: The Beach And Dunes, Their Use And The Implications For Management (Ontario), Kathryn Ann Parlee
Killbear Provincial Park: The Beach And Dunes, Their Use And The Implications For Management (Ontario), Kathryn Ann Parlee
Theses and Dissertations (Comprehensive)
Beaches, and in particular sand dunes, are extremely fragile environments, easily altered by human activities. Intensive use of the beach/dune complex at Killbear Provincial Park near Parry Sound, Ontario may have led to the severe degradation of its dune system within Kilcoursie Bay. At present the dunes have been degraded back to an embryonic state, and as a result it is necessary to consider the development of management strategies before the system is completely destroyed. In order to develop effective management strategies however, it is necessary to understand how the natural process of the system work and the specific effects …
The Growth And Distribution Of The Green Alga Cladophora At Presqu'ile Provincial Park: Implications For Management (Ontario), Dolf Craig Dejong
The Growth And Distribution Of The Green Alga Cladophora At Presqu'ile Provincial Park: Implications For Management (Ontario), Dolf Craig Dejong
Theses and Dissertations (Comprehensive)
The Green alga genus Caldophora is one of the most abundant kinds of algae worldwide, found in both freshwater and marine environments. It prefers nutrient-rich waters and requires a rocky substrate and water movement for growth. When water temperatures reach 22 to 26 C, the alga dies and washes into shore in large mats. Dead Cladophora produces a terrible odour, reduces property values and can alter the taste of drinking water. At Presqu’ile Provincial Park, maximum Cladophora sloughing occurred July 22 1999, the same time as peak summer park visitation begins. This results in the fouling of the Park’s beaches …