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The history of DEMO: An experiment in regeneration harvest of northwestern forest ecosystems. Northwest Science 73:3-11.

SAVE THE DATE: 2023 Annual meeting:

March 21-24 at Western washingtoN University

For list of talks of the 2022 Annual Meeting, held online,

check out the Annual Meeting page.

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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.


Members should click here to access Northwest Science on
Click here to access abstracts of “Accepted articles in press” for the upcoming issue of Northwest Science.

Northwest Science 95(2)
Table of Contents


Effects of Stream Enhancement Structures on Water Temperature in South Sister Creek, Oregon– Mary V. Santelmann, Alessandra G. Harewood, Rebecca L. Flitcroft

Riverscape View of Fish Assemblages, Habitat, and Stream Temperatures during Summer Low Flows in the Chehalis River, Washington– Mara S. Zimmerman, John J. Winkowski

Abiotic and Biotic Factors Associated with Sculpin Presence and Density in Northern Idaho Streams– Todd A. Higens, Dennis L. Scarnecchia

Comparative Population Dynamics, Flight Periods, and Volatile Pheromone Attraction of Tragosoma harrisii and Tragosoma soror (Coleoptera: Cerambycidae) in Idaho– Claudia D. Lyons-Yerion, Stephen P. Cook, Christopher J. Williams, James D. Barbour

Seasonal Catch Rates of the Endemic Olympic Mudminnow in Wetland Habitat– Olivia F. Williams, Roger A. Tabor, Patrick W. DeHaan, Lauren M. Kuehne, Julian D. Olden, Carlisha Hall

Factors Related to Crappie Indices of Abundance in a Large, Fluctuating Canyon Reservoir in Idaho– Kevin A. Meyer, Tracy J. Richter, John E. Anderson, Michael M. McLeod, Michael P. Peterson

Book Review

75 Years of Manhattan Project Legacies – Ten Perspectives– Review by Cal Delegard

Northwest Science 95(1)
Table of Contents


Effects of Livestock Exclusion on Stream Banks and Riparian Vegetation in Washington and Oregon – Michelle Krall, Phil Roni, Christopher Clark, and Kai Ross

Inviable Seed Set Affects Arthropod Damage to Seeds of Western Juniper (Juniperus occidentalis) – William S. Longland and Lindsay A. Dimitri

Hydrologic and Nutrient Fluxes in a Small Watershed with Changing Agricultural Practices – Bridger Cohan, David Hooper, Melanie Roy, Alyssa Peter, and Nathan Williams

Passive Restoration of a Small Mountain Stream in Eastern Oregon – Anthonie M. A. Holthuijzen

Benthic Insect Assemblage and Species-Level Responses to Eleven Years of Nutrient Addition in the Kootenai River, Idaho – Bahman Shafii, G. Wayne Minshall, Charles E. Holderman, Paul J. Anders, and William J. Price


Tardigrades of North America: Platicrista brunsoni nov. sp. (Parachela, Hypsibiidae, Itaquasconinae) from the Bob Marshall Wilderness Area of Montana – William R. Miller and Jeffrey D. Miller

Invasion of Virile Crayfish Faxonius virilis (Hagen 1870) in the Lower Henrys Fork Drainage, Idaho – Peyton C. Shaw, Eric R. Larson, and Eric J. Billman

Biomass Regressions for Understory Species in Young-Growth Sitka Spruce–Western Hemlock Forests of Southeast Alaska – Annelise Z. Rue-Johns, Justin S. Crotteau, David V. D’Amore, and Jeffrey C. Barnard

Book Review

Status and Distribution: A Key to Bird Identification review by Andrew J. McCormick

Some Challenges and Potential Solutions in Feeding and Housing Earth’s Human Population review by Jeff Antonelis-Lapp


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