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The National Natural Landmarks (NNL) Program encourages the preservation of exceptional examples of the Nation’s biological and geological features. To qualify for NNL designation, a site must be one of ...
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392. [Article] Design and construction of demonstration/research wetlands for treatment of dairy farm wastewater
"EPA 600/R-93/105"Citation -
As of September 2017, most information about wetland plant associations in southwestern Oregon can only be found in unpublished reports that are not available in libraries or on the Internet. Jon Titus's ...
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394. [Article] Major-ion, nutrient, and trace-element concentrations in the Steamboat Creek Basin, Oregon, 1996
This report presents the concentrations of major ions, nutrients, and trace elements in water and bottom sediments collected in the four-tributaries during the low-flow condition of September 9-13, 1996. ...Citation -
395. [Article] Native wetland, riparian, and upland plant communities and their biota in the Willamette Valley, Oregon
As part of the Willamette Basin Geographic Initiative Program, the Environmental Protection Agency (EPA) funded The Nature Conservancy of Oregon to inventory, classify, and map native wetland and riparian ...Citation -
Seedlings were thinned to spacings of 5, 9, 12, 15, and 18 feet and measured periodically. Twenty-seven years after treatment, quadratic mean diameters increased curvilinearity (p < or = 0.05) as spacing ...
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397. [Article] Potential effects of climate change and fire management on fire behavior and vegetation patterns on an east Cascades landscape
Climate exerts considerable control on wildfire regimes, and climate and wildfire are both major drivers of forest growth and succession in interior Northwest forests. Estimating potential response of ...Citation -
Quigley, Thomas M.; Arbelbide, Sylvia J., tech. eds. 1997. An assessment of ecosystem components in the interior Columbia basin and portions of the Klamath and Great Basins: volume 1. Gen. Tech. Rep. PNW-GTR-405. ...
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399. [Article] Selected elements and organic chemicals in bed sediment and fish tissue of the Tualatin River Basin, Oregon, 1992-96
The U.S. Geological Survey (USGS) has worked cooperative with the Unified Sewerage Agency of Washington County (USA) since 1990 to assess water quality in the Tualatin River Basin. The objectives of this ...Citation -
"The objectives of this study were to locate suitable intertidal and subtidal clam planting sites and to determine the feasibility of planting laboratory spawned clams. Criteria used to determine the suitability ...
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