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Showing 1 to 20 of 134 for “"willow"”.
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Population Dynamics of Willow Flycatchers in the Sierra Nevada
In the western United States, Willow Flycatcher (Empidonax traillii) populations have declined, and the magnitude of these declines varies across the species range likely because of ecological differences among subspecies and variation in biotic and abiotic factors. Three subspecies of Willow …
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Sustainable landfill leachate treatment using a willow vegetation filter
The utilisation of a willow vegetation filter for the treatment of landfill leachate is an environmentally and economically appealing solution for landfill operators. Investigations into the design and efficacy of the system, the effects of landfill leachate irrigation on soil ecology, soil …
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Geology of the Willow City-Eckert area, Gillespie County, Texas
This paper discloses the results of a geologic investigation of an area lying on the south rim of the Llano basin. A map is presented showing the stratigraphy and structure of this area. The historical events of the region were deformation and igneous intrusion antedating Upper Cambrian, doming in …
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Riparian willow decline in Colorado: interactions of ungulate browsing, native birds and fungi
Willows (Salix spp.) are critical components of Rocky Mountain riparian ecosystems. They provide food for ungulates and beavers; habitat for resident and migratory bird populations, and amphibians; and are integral components of the structure and function of montane riparian ecosystems. In Rocky …
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Implications for biodiversity of the deployment of commercial scale short rotation willow coppice
Willow short rotation coppice (SRC) is seen as an important renewable energy source within temperate regions including the UK and its deployment within the agri-environment is supported by a number of goverment policies. Willow SRC represents a significant land use change and its deployment has …
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Hydrocarbon pollutant impact on spectral and biophysical properties of willow and grass species
… were performed, one at plant scale with willow (Salix viminalis var. Tora) and maize (Zea mays var. Lapriora), and the other at canopy scale with turf grasses. At leaf scale, a pot-based experiment was designed with plants growing in pots containing a hydrocarbon (crude oil or refined …
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MULTIPLE APPROACHES TO MAPPING RESISTANCE TO MELAMPSORA LEAF RUST IN SHRUB WILLOW (SALIX)
In commercial production, shrub willow grown as a biomass bioenergy crop can potentially remain in the field for more than 20 years. In these dense plantations, biotic stressors can flourish, impacting biomass yield. Among the most impactful are willow leaf rusts caused by Melampsora spp. As a …
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Effects of herbivory as an ecological constraint of willow growth at a restored riparian corridor
… This study investigated stunted growth of arroyo willow (Salix lasiolepis) cuttings planted along the banks of Redwood Creek as part of the National Park Service’s Muir Beach Restoration Project to restore habitat for special status species in California. Based on observations of deer browsing, as …
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Bill Hybels and the Willow Creek Community Church: a Study in Audience Analysis and Adaptation
… of Bill Hybels, founder and Senior Pastor of Willow Creek Community Church, South Barrington, Illinois. General background information of the church growth movement in America is provided, placing the inception and development of the Willow Creek Community Church in that context. Selected …
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The consolidation of Ypsilanti Public and Willow Run Community Schools: Lessons learned and policy considerations
… vote to consolidate the Ypsilanti Public and Willow Run Community Schools. In the past thirty years, only four consolidations have been approved by voters in Michigan; and at least nine consolidation proposals were rejected. Of the successful consolidation votes, three were small rural …
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The potential of Short Rotation Coppice (SRC) willow (Salix L.) as a biomass crop in Orkney.
… unviable in the maritime climate of Orkney, SRC willow (Salix spp.) is a proven alternative woody biomass crop which can be grown as a local renewable fuel. A selection of 13 SRC clones were screened in Orkney and the most promising six clones which are recommended in Orkney are Ashton Stott, …
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The Genomic Basis of Heterosis in High-Yielding Triploid Hybrids of Willow (Salix spp.) Bioenergy Crops
… lignocellulosic bioenergy crops such as shrub willow (Salix spp.), can help offset fossil fuel usage without competing with food crops. Hybridization is a key component in shrub willow breeding because hybrids often exhibit heterosis for yield. The genomic basis of heterosis in willow has not …
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Effects of water willow establishment on littoral assemblages in Kansas reservoirs: focus on age-0 largemouth bass
… an emergent macrophyte, American water willow Justicia americana, on littoral reservoir communities. Coves in three large (>1,800 ha) Kansas impoundments were chosen and half planted with water willow. Sampling was conducted during the summer from 2001 to 2004. I found that water willow …
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Wallace Stegner's Wolf Willow and 1960s Critical Essays: Renarrativizing Western American Literature for the West and for America
… literature to local color writing. In Wolf Willow: A History, a Story, and a Memory of the Last Plains Frontier (1962), Stegner uses fiction, history, and memoir to engage the mythic West's silencing of his family's failed homesteading experiences in a specific western place and the …
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Habitat selection, food availability, and reproductive success of southwestern willow flycatchers on the South Fork Kern River, California
The southwestern willow flycatcher (Empidonax traillii extimus) is a federally-endangered neotropical migrant that breeds in the southwestern United States. The population of southwestern willow flycatchers on the South Fork Kern River in California was once thought to be one of the largest E. t. …
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