Mission Statement: We are a network of professional and amateur scientists from diverse disciplines that provides support and a forum for research and education relevant to the environment and resource management of northwestern North America. To accomplish our mission, the association publishes a quarterly journal, convenes an annual scientific meeting, and awards student research grants.

Since 1923, the NWSA has existed for the purpose of promoting scientific research and disseminating scientific knowledge. Our annual meetings are held throughout the Pacific Northwest and provide an opportunity to share recent findings and foster collaborative interactions.

NWSA publishes four issues of Northwest Science each year. A peer reviewed journal, Northwest Science is an outlet for original papers on wide ranging topics in the natural sciences, including anthropology, aquatic biology, botany, ecology, fisheries, forestry, geology, geography, hydrology, soils, wildlife biology, and zoology. The geographic scope of Northwest Science is the northwestern United States and western Canada.


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In Memoriam – Ed Schreiner


Phenotypic Differences in Open-grown and Sheltered Cantharellus formosus – Daniel E. Zayonc and Tobis Z. Agrell

Coded-Wire Tag Sampling: The Case for Electronic-Field Detection – Michele M. Masuda and Adrian G. Celewycz

Reintroduced Beavers Rapidly Influence the Storage and Biogeochemistry of Sediments in Headwater Streams (Methow River, Washington) – Rita K. McCreesh, Kena Fox-Dobbs, Peter Wimberger, Kent Woodruff, Gordon Holtgrieve, and Thomas K. Pool

Status of Pacific Martens (Martes caurina) on the Olympic Peninsula, Washington – Katie M. Moriarty, Keith B. Aubry, Connor N. Morozumi, Betsy L. Howell, Patricia J. Happe, Kurt J. Jenkins, Kristine L. Pilgrim, and Michael K. Schwartz.

Relationships Between Salt Marsh Vegetation and Surface Elevation in Coos Bay Estuary, Oregon – Mary V. Santelmann, Brett A. Boisjolie, Rebecca Flitcroft, and Megan Gomez


Foliage Arthropod Biomass Equations for Open Vegetation Conditions of the Pacific Coast Range – Craig Loehle, Melissa Scherr, and Jake Verschuyl

Book Review

The Future of Our National Forests and the US Forest Service – by Dean S. Debell



Growth and Recruitment of Nonnative Smallmouth Bass along the Upstream Edge of its Riverine Distribution – Erika S. Rubenson and Julian D. Olden

Vegetation Change on an Alaska Estuary after the 1964 Great Alaska Earthquake – Sadie E.G. Ulman, Christopher K. Williams, John M. Morton, Tracy L. DeLiberty, and Brenna N. Ness

A Landscape Habitat Suitability Model for the Humboldt Marten (Martes caurina humboldtensis) in Coastal California and Coastal Oregon – Keith M. Slauson, William J. Zielinski, Thomas A. Kirk, and David W. LaPlante

Early Spring and Early Vanishing Wetlands as Harbingers of the Future? The Climate Change Trap for Ephemeral Pond-Breeding Frogs – Curtis R. Abney, Sterling W. Balzer, Ashley Dueckman, Andrew Baylis, and David R. Clements


Fin Whale Call Presence and Type Used to Describe Temporal Distribution and Possible Area Use of Clayoquot Sound – Rianna E. Burnham

The Effect of Time and Forest Disturbances on the Structural and Functional Characteristics of Fisher (Pekania pennanti) Resting Structures – William J. Zielinski and Fredrick V. Schlexer

Repurposing Environmental DNA Samples to Verify the Distribution of Rocky Mountain Tailed Frogs in the Warm Springs Creek Basin, Montana – Thomas W. Franklin, Taylor M. Wilcox, Kevin S. McKelvey, Samuel E. Greaves, Joseph C. Dysthe, Michael K. Young, Michael K. Schwartz, and Jason Lindstrom

Book Review

Population Ecology of Roosevelt Elk by Butch Weckerly – by Bruce Johnson

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