@article {83147, title = {Status of the European Green Crab, Carcinus maenas, (aka 5-spine crab) in Oregon Estuaries. Report for 2022}, year = {2023}, note = {The invasive European green crab is a voracious predator of bivalve molluscs, small crustaceans and other organisms. It has been present in Oregon since the late 1990s. The population grows when winter waters are warm, as they are during El Ni{\~n}os. Since 2015, however, {\textquotedblleft}recruitment has been good every year. Since green crabs live for 6 years, these recent strong year classes can produce larvae until 2027. . . Now that populations in Oregon, Washington and British Columbia have built up, we have evidence for local production and for larvae sources from a genetically distinct population on Vancouver Island. . .{\textquotedblright} (from the Executive Summary) }, pages = {30 p.}, institution = {Pacific States Marine Fisheries Commission. Aquatic Nuisance Species Project}, address = {Portland, Or.}, keywords = {aquatic invertebrates, Coos Bay, crustaceans, El Nino, European green crab = Carcinus maenas, Grays Harbor (Wa.), introduced species, Netarts Bay, Pacific Decadal Oscillation, population count, Salmon River, Siuslaw River, Tillamook Bay, Umpqua River estuary, Willapa Bay (Wa.), Yaquina Bay}, url = {https://ir.library.oregonstate.edu/concern/technical_reports/73666d40c}, author = {Yamada, Sylvia Behrens and Royer, Cameron and Schooler, Shon and Flitcroft, Rebecca and Vance, Mitch and Randall, Andrea and Fisher, Jennifer} } @article {83146, title = {Status of the European Green Crab, Carcinus maenas, in Oregon and Washington Coastal Estuaries. Report for 2020 and 2021}, year = {2022}, note = {The COVID-19 pandemic affected this report, leading to combined years and trapping on a reduced number of estuaries. The invasive European green crab is a voracious predator of bivalve molluscs, small crustaceans and other organisms. It has been present in Oregon since the late 1990s. The population grows when winter waters are warm, as they are during El Ni{\~n}os. Since 2015, however, {\textquotedblleft}recruitment has been good every year. Since green crabs live for 6 years, these recent strong year classes can produce larvae until 2027. . . Now that populations in Oregon, Washington and British Columbia have built up, we have evidence for local production and for larvae sources from a genetically distinct population on Vancouver Island. . .{\textquotedblright} (from the Executive Summary) This report is accompanied by a dataset, available at: https://ir.library.oregonstate.edu/concern/datasets/b8515w17z }, pages = {27 p.}, institution = {Pacific States Marine Fisheries Commission. Aquatic Nuisance Species Project}, address = {Portland, Or.}, keywords = {aquatic invertebrates, Coos Bay, crustaceans, El Nino, European green crab = Carcinus maenas, Grays Harbor (Wa.), introduced species, Netarts Bay, Pacific Decadal Oscillation, population count, Tillamook Bay, Willapa Bay (Wa.), Yaquina Bay}, url = {https://ir.library.oregonstate.edu/concern/technical_reports/g445cn70c }, author = {Yamada, Sylvia Behrens and Royer, Cameron and Schooler, Shon and Fisher, Jennifer and Randall, Andrea and Buffington, Chelsey and Stote, Alex and Akmajian, Adrianne} } @article {83110, title = {Spatial and temporal diving behavior of non-breeding common murres during two summers of contrasting ocean conditions}, journal = {Journal of Experimental Marine Biology and Ecology}, volume = {517}, year = {2019}, note = {2013 and 2015 were not good breeding years for the common murre in the Pacific Northwest. Instead of finding nest sites in breeding colonies, most murres dispersed to areas such as estuaries having greater concentrations of fish. There were differences in ocean conditions in the two years studied, particularly a marine heatwave in 2013-2014, and these differences led to variations in diving behavior and foraging locations. This study has interesting implications for murre life history and conservation.}, month = {2019, Aug.}, pages = {p.13-24}, keywords = {birds, climate, Columbia River, common murre = Uria aalge, energetics, feeding behavior, Grays Harbor (Wa.), life history, Tillamook Head, Yaquina Head}, doi = {https://doi.org/10.1016/j.jembe.2019.05.009 }, author = {Loredo, Stephanie A. and Orben, Rachel A. and Suryan, Robert M. and Lyons, Donald E. and Adams, Josh and Stephensen, Shawn W.} } @article {82861, title = {Status of the European Green Crab, Carcinus maenas, in Oregon and Washington coastal Estuaries in 2017}, year = {2018}, note = {The invasive European green crab is a voracious predator of bivalve molluscs, small crustaceans and other organisms. It has been present in Oregon since the late 1990s. The population grows when winter waters are warm, as they are during El Ni{\~n}os. {\textquotedblleft}Prior to 2015, green crabs were too rare to exert measurable effects on the native benthic community and on shellfish culture in Oregon and Washington. Following the recent strong El Ni{\~n}o, however, we documented the arrival of three strong year classes in 2015, 2016 and 2017. Average catch rates in over the last three years steadily increased from 0.5 to 0.8 and to 1.9 crabs per trap. These catches are much higher than in any of the previous years, including 1998. Since green crabs live for 6 years, these three consecutive year classes will provide larvae until 2023. A switch to cooler ocean conditions in the coming years will result in poor recruitment, but a return to high PDO and strong El Ni{\~n}o patterns would signal good recruitment and higher green crab densities.{\textquotedblright} (from the Executive Summary) Coos Bay, in particular, has experienced shocking growth of this population, going from 9 crabs captured in 2002 to 1,653 crabs captured in 2017. This report is accompanied by a dataset, available at: https://ir.library.oregonstate.edu/concern/datasets/rn3016632 }, pages = {29 p.}, institution = {Pacific States Marine Fisheries Commission. Aquatic Nuisance Species Project}, keywords = {Alsea Bay, aquatic invertebrates, Boat ramp (Netarts), Coos Bay, Coquille River estuary, crustaceans, El Nino, European green crab = Carcinus maenas, Grays Harbor (Wa.), Hatfield Marine Science Center, introduced species, Johnson{\textquoteright}s Slough (Yaquina), Makah Bay (Wa.), Nehalem Bay, Netarts Bay, North of Nevor Shellfish (Netarts), Oregon Coast Aquarium mudflat, Pacific Decadal Oscillation, population count, Sally{\textquoteright}s Bend, Tillamook Bay, Whiskey Creek Salmon Hatchery, Willapa Bay (Wa.), Yaquina Bay}, url = {https://ir.library.oregonstate.edu/concern/technical_reports/rx913w156 }, author = {Yamada, Sylvia Behrens and Yednock, Bree and Indivero, Julia and Geierman, Christina and Prickett, Joel A. and Randall, Andrea and Akmajian, Adrianne} } @article {54886, title = {Tsunami impact to Washington and northern Oregon from segment ruptures on the southern Cascadia subduction zone}, journal = {Natural Hazards}, volume = {72}, year = {2014}, note = {All who live on the West Coast of the United States should be aware of the possibility of a major earthquake occurring. But what if only a part of the subduction zone ruptures? This article examines a possible rupture in the southern half of the Cascadia Subduction Zone (south of Alsea Bay, Oregon). The authors ask important questions. How quickly does tsunami wave height decline north of the southern rupture areas? How much time do communities north of the southern rupture areas have to evacuate before the first inundation and the largest inundation occur? How far north of the southern rupture areas will felt shaking likely trigger evacuation of a populace trained to evacuate for a local earthquake? (p.851) The authors address these questions using a 10,000-year record of offshore turbedite deposits and a ~4,600-year record of tsunami deposits at Bradley Lake.}, month = {2014, Jun.}, pages = {p.849-870}, keywords = {Bandon (Or.), Brookings (Or.), Cannon Beach (Or.), Cape Blanco, coastal hazards, Columbia River, Coos Bay, Crescent City (Cal.), Depoe Bay (Or.), earthquakes, Florence (Or.), geology, Gold Beach (Or.), Grays Harbor (Wa.), Lincoln City (Or.), Long Beach (Wa.), Manzanita (Or.), Netarts Bay, Newport (Or.), Pacific City (Or.), paleosciences, Port Orford (Or.), Rockaway (Or.), Seaside (Or.), Tillamook Bay, tsunamis, Waldport (Or.), Winchester Bay}, doi = {10.1007/s11069-014-1041-7}, author = {Priest, George R. and Zhang, Yinglong and Witter, Robert C. and Wang, Kelin and Goldfinger, Chris and Stimely, Laura L.} }