Now showing items 1-6 of 6
Polymorphic mountain whitefish (Prosopium williamsoni) in a coastal riverscape: Size class assemblages, distribution, and habitat associations
Fluvial mountain whitefish (<italic>Prosopium williamsoni</italic>) offer a rare example of trophic polymorphism among stream dwelling salmonids in temperate North American river systems. Trophic polymorphism is a form of resource-based phenotypic diversification that occurs when exploitation of under-utilized resources ...
Coastal cutthroat trout in headwater stream networks: Distribution and abundance in space and time
Understanding the linkages among physical and biological processes across scales is vital to understanding the diversity and heterogeneity of headwater streams. Most research investigating fish–habitat relationships in headwater catchments has been conducted over a limited geographic extent and at small spatial scales. We ...
Effects of dam removal on resident fish movement in Cijiawan River, Taiwan
Freshwater fish change their movement patterns in response to natural or anthropogenic changes in habitat. Dam removal, a major restoration practice to restore river longitudinal connectivity, can affect river habitat with changes in flow regimes and morphological changes due to the sudden release of dam-trapped sediments. ...
Effect of Armillaria Root Disease on Stand Structure, Composition, and Potential Fire Behavior in a Managed Ponderosa Pine Forest near Glenwood, WA
Root disease and wildfire are important disturbance agents in western North American forests. It has been speculated that root disease increases potential fire behavior, since root disease kills trees and contributes to available fuels. However, little quantitative evidence of this effect on wildfire has been offered. This ...
Environmental Controls on Installed Woody Plant Establishment in the Hydrologically Restored Tidal Freshwater Wetlands of the Nisqually River Delta
Tidal freshwater wetlands are some of the most highly productive wetland systems on the planet. However, alterations to the land surrounding major Puget Sound river deltas have resulted in a 60% to 83% loss of tidal wetlands. As our awareness of ecological services grows, and freshwater tidal wetlands rise in restoration ...
Consequences of agroforestry management on understory vegetation in Uruguay
Uruguay, part of the Campos ecoregion, which has a long history of grazing. Recently, afforestation has also become a common land-use change across the Campos. As a novel ecosystem develops, the effects of these multiple disturbances are largely unknown. In this dissertation, I present results of field experiments to provide ...