Vegetation

Vegetation

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  1. Stream-Associated Amphibian Habitat Assessment in the Portland-Vancouver Metropolitan Region

    This study assessed the influence of landscape development on stream-associated amphibians in forested riparian areas within the Portland-Vancouver metropolitan region. Human alteration of landscapes may...

  2. The allelopathic potential of Rhododendron macrophyllum in a western Cascades clearcut

    The purposes of this study were to determine if Rhododendron macrophyllum has the potential to inhibit the growth of other species through the production of water-soluble toxins which are leached out of its...

  3. Biological Treatment of Leachates of Microaerobic Fermentation

    Microaerobic fermentation (MF) is a process of controlled degradation of organic waste material that occurs in enclosed fermentors under micro-aerobic conditions at near-room temperature. MF processing of...

  4. The paleolimnology of Bull Run Lake: disruption and stability in a natural system

    Detailed analysis of the physical, chemical, pollen and diatom stratigraphy of sediment cores from Bull Run Lake, Oregon reveals that the lake has been subject to repeated episodes of disruption by volcanic ash...

  5. An Experimental Investigation of Nest Reuse and Nest Site Selection in an Open-Cup Nesting Passerine

    Eastern Kingbirds (Tyrannus tyrannus) breed from coast to coast in North America and build open-cup nests in trees. They have been extensively studied across most of their range and have only on occasion been...

  6. The Distribution of the Deer Mouse, Peromyscus Maniculatus, on the Oregon Side of the Columbia River Gorge

    A study of the biogeography of Peromyscus maniculatus was undertaken in order to ascertain a few of the environmental parameters important in defining the distribution of this species and how the species in...

  7. Assessing Hydrologic and Water Quality Sensitivities to Precipitation Changes, Urban Growth and Land Management Using SWAT

    Precipitation changes and urban growth are two factors altering the state of water quality. Changes in precipitation will alter the amount and timing of flows, and the corresponding sediment and nutrient...

  8. Measuring the Effect of Vegetated Roofs on the Performance of Photovoltaic Panels in Combined Systems

    Recent studies suggest that integration of photovoltaic panels with green roofs may improve the performance of both. While vegetation may provide a benefit by reducing the net radiation load on the underside of...

  9. Green Mind Gray Yard: Micro Scale Assessment of Ecosystem Services

    There is a spatial mismatch between the size of the area where people are living and the extent of land needed to ecologically support developed areas. More people are living in urban areas than any time in...

  10. Late-Holocene Flood History, Flood-Frequency, and Paleoclimate Analysis of the Central Black Hills, South Dakota

    Stratigraphic records in four basins in the central Black Hills in combination with hydraulic calculations show that all basins have experienced multiple large floods in the last 2,000 years with flow rates...

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