Report Background

Pacific Biodiversity Institute has been conducting vegetation studies for many years.

These reports in PDF format were commissioned by various entities to help make informed land management and conservation decisions.

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Report objectives

These reports are based on field studies and ecological analyis. We also incorporate remote sensing of satellite and aerial imagery and GIS analysis. The objectives of the studies include locating and mapping rare plants, describing vegetation communities, describing ecological conditions, and documenting the presence of invasive species. Many of the reports include objectives to make management recommendations.

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Publications on Vegetation and Botany

Vegetation Studies in State Parks of Washington and Oregon

Forest Studies

Mt. Hood National Forest Wildfire Risk Management Recommendations, 2004.

Mt. Hood National Forest Insect Mortality and Related Fire Risk Issues, 2005.

Mt. Hood National Forest, Fire Regime Condition Class and Forest Stewardship Planning, 2005.

Mt. Hood National Forest Cooper Planning Area Fire Planning Issues, 2005.

South Fork Mill Creek Watershed Strategic Wildfire Protection Plan, 2005.

Invasive Species

Noxious weed surveys of the Cedar, Tolt and Lake Youngs watersheds for Seattle Public Utilities, 2007-2008.

Dalmatian toadflax background profile, by Peter Morrison, 2006. Published in: Boersma, P.D., S. Reichard, and A. Van Buren. Invasive Species in the Pacific Northwest. Seattle and London: University of Washington Press, 2006.

Demographics of Selected Exotic Plants In the Chewuch Watershed, Methow Valley, Washington A Status Report, 2003.

Chewuch Watershed Invasive Plant Project, 2000.

Chewuch Neighbors Roadside Weed Management Pilot Project, 1998.

Columbia Basin Alien Plant Report, 1995.

Sonoran Desert National Monument

Natural Communities of the Sonoran Desert National Monument and Sand Tank Mountains, Phase 2 Condition Assessment, 2003.

Appendices to the Sonoran Desert National Monument study, 2003.

Natural Communities and Ecological Condition of the Sonoran Desert National Monument and adjacent areas (full document with appendices, about 9 MB), 2003.

Natural Communities of the Sonoran Desert National Monument and Sand Tank Mountains, Phase 1, Maps and Descriptions, 2001.

Distribution and Abundance of Native Grasses in the Mountains of the Sonoran Desert National Monument and Adjoining Portions of the Barry M. Goldwater Range, 2006.

Native Grass Abundance in the Sonoran Desert National Monument, 2004.

Characteristics of Xeroriparian Grasses of the Sonoran Desert National Monument, 2006.

Vegetation Studies in the Methow Valley in North Central Washington

Methow Valley Conservation Needs Assessment, 2005. This publication evaluates sensitive Areas, at-risk plants and animals, exotic Plants, Wildlife Corridors and potential buildable areas.

Bowen Mountain section of the Methow Valley Wildlife Area - Rare Plant and Vegetation Survey, 2007.

Methow Valley Wildlife Area Rare Plant and Vegetation Survey, 2006.


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Winthrop, WA 98862 509-996-2490