Lower Columbia River & Estuary

Action Effectiveness Monitoring for the Lower Columbia River and Estuary Habitat Restoration Program Annual Report for Year 15 (October 1, 2018 to September 30, 2019)

This report describes Action Effectiveness Monitoring program accomplishments during October 1, 2018 to September 30, 2019, or Year 15 of this on-going project. For more information on this project since its inception in 2007, please see previous years' annual reports.

Action Effectiveness Monitoring for the Lower Columbia River and Estuary Habitat Restoration Program Annual Report for Year 14 (October 1, 2017 to September 30, 2018)

This report describes Action Effectiveness Monitoring program accomplishments during October 1, 2017 to September 30, 2018, or Year 14 of this on-going project. For more information on this project since its inception in 2007, please see previous years' annual reports.

Action Effectiveness Monitoring for the Lower Columbia River and Estuary Habitat Restoration Program Annual Report for Year 13 (October 1, 2016 to September 30, 2017)

This report describes Action Effectiveness Monitoring program accomplishments during October 1, 2016 to September 30, 2017, or Year 13 of this on-going project. For more information on this project since its inception in 2007, please see previous years' annual reports.

Biotic vs. abiotic forcing on plankton assemblages varies with season and size class in a large temperate estuary

Abstract   Large river estuaries experience multiple anthropogenic stressors. Understanding plankton community dynamics in these estuaries provides insights into the patterns of natural variability and effects of human activity. We undertook a 2-year study in the Columbia River Estuary to assess the potential impacts of abiotic and biotic factors on planktonic community structure over multiple time scales.

Engaging High School Students as Collaborators in Ecological Investigation of the Columbia River Estuary: Lessons from a Transdisciplinary University–High School Partnership

Abstract   The Columbia River Estuary Science Education and Outreach (CRESCENDO) project was a university–high school partnership between Washington State University (WSU) researchers and science teachers and students from five high schools located in southwest Washington, adjacent to the Columbia River Estuary (CRE).

Zooplankton invasions in the early 21st century: a global survey of recent studies and recommendations for future research

Abstract We present a comprehensive survey of the scientific literature pertaining to non-indigenous and invasive zooplankton published across the first decades of the twenty-first century (i.e., 2000–2018). We provide a concise summary of the manner in which the scientific community has allocated its efforts to this issue in recent decades, and to illuminate trends that emerge from the literature.

Feeding rates and prey selection of the invasive Asian clam, Corbicula fluminea, on microplankton in the Columbia River, USA

Abstract   The Asian clam, Corbicula fluminea, was introduced into North America in the 1920s—first observed in the Columbia River—and has expanded its range across the continent and into South America and Europe, yet little is known about its ecology and potential to impact food webs. To evaluate prey selectivity and feeding rates of C. fluminea, we conducted laboratory feeding experiments using water from two distinct Columbia River environments (unimpounded river and reservoir) during July and October 2016.