17 Result(s)
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Patrick B. Shafroth
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Article
Invasion of Siberian Elm (Ulmus pumila) Along the South Platte River: the Roles of Seed Source, Human Influence, and River Geomorphology
Riparian ecosystems in the western USA have been invaded by non-native woody species deliberately introduced for stream bank stabilization, agricultural windbreaks, and urban shade. Recent work suggests that t...
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Article
Ecological Interfaces between Land and Flowing Water: Themes and Trends in Riparian Research and Management
This paper provides an overview of past, present and future themes for research and management of riparian zones, often relating to papers within this Wetlands Special Feature. Riparian research expanded in the U...
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Riparian Plant Communities Remain Stable in Response to a Second Cycle of Tamarix Biocontrol Defoliation
Reduced abundance of non-native Tamarix shrubs in western U.S. riparian systems following biological control by a defoliating beetle has led to concerns that replacement plant communities could be dominated by ot...
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Combined effects of biological control of an invasive shrub and fluvial processes on riparian vegetation dynamics
Plant community responses to biocontrol of invasive plants are understudied, despite the strong influence of the composition of replacement vegetation on ecosystem functions and services. We studied the vegeta...
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Article
Vegetative and geomorphic complexity at tributary junctions on the Colorado and Dolores Rivers: a blueprint for riparian restoration
Habitat complexity in rivers is linked to dynamic fluvial conditions acting at various spatial scales. On regulated rivers in the western United States, tributaries are regions of high energy and disturbance, ...
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Article
Divergent effects of land-use, propagule pressure, and climate on woody riparian invasion
Landscape-scale analyses of biological invasion are needed to understand the relative importance of environmental drivers that vary at larger scales, such as climate, propagule pressure, resource availability,...
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Article
Open AccessChanges in Community-Level Riparian Plant Traits over Inundation Gradients, Colorado River, Grand Canyon
Comparisons of community-level functional traits across environmental gradients have potential for identifying links among plant characteristics, adaptations to stress and disturbance, and community assembly. ...
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Article
Riparian Soil Development Linked to Forest Succession Above and Below Dams Along the Elwha River, Washington, USA
Riparian forest soils can be highly dynamic, due to frequent fluvial disturbance, erosion, and sediment deposition, but effects of dams on riparian soils are poorly understood. We examined soils along toposequ...
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Article
Edaphic, salinity, and stand structural trends in chronosequences of native and non-native dominated riparian forests along the Colorado River, USA
Tamarix spp. are introduced shrubs that have become among the most abundant woody plants growing along western North American rivers. We sought to empirically test the long-held belief that Tamar...
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Article
Managed Flood Effects on Beaver Pond Habitat in a Desert Riverine Ecosystem, Bill Williams River, Arizona USA
The ecological effects of beaver in warm-desert streams are poorly documented, but potentially significant. For example, stream water and sediment budgets may be affected by increased evaporative losses and se...
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Article
Assessing the extent and diversity of riparian ecosystems in Sonora, Mexico
Conservation of forested riparian ecosystems is of international concern. Relatively little is known of the structure, composition, diversity, and extent of riparian ecosystems in Mexico. We used high- and low...
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Article
Open AccessEarly Vegetation Development on an Exposed Reservoir: Implications for Dam Removal
The 4-year drawdown of Horsetooth Reservoir, Colorado, for dam maintenance, provides a case study analog of vegetation response on sediment that might be exposed from removal of a tall dam. Early vegetation re...
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Article
Dominance of non-native riparian trees in western USA
Concern about spread of non-native riparian trees in the western USA has led to Congressional proposals to accelerate control efforts. Debate over these proposals is frustrated by limited knowledge of non-nati...
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Article
Control of Tamarix in the Western United States: Implications for Water Salvage, Wildlife Use, and Riparian Restoration
Non-native shrub species in the genus Tamarix (saltcedar, tamarisk) have colonized hundreds of thousands of hectares of floodplains, reservoir margins, and other wetlands in western North America. Many resource m...
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Article
Biology, ecology and management ofElaeagnus angustifolia L. (Russian olive) in western North America
Elaeagnus angustifolia (Russian olive) is an alien tree that is increasingly common in riparian habitats of western North America. This paper reviews the pertinent scientific literature in order to determine the ...
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Article
Responses of Riparian Cottonwoods to Alluvial Water Table Declines
Human demands for surface and shallow alluvial groundwater have contributed to the loss, fragmentation, and simplification of riparian ecosystems. Populus species typically dominate riparian ecosystems through...
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Article
Establishment of woody riparian vegetation in relation to annual patterns of streamflow, Bill Williams River, Arizona
Previous studies have revealed the close coupling of components of annual streamflow hydrographs and the germination and establishment ofPopulus species. Key hydrograph components include the timing and magnitude...
