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Timothy Counihan (Former Employee)

Science and Products

european green crab

Development and Refinement of Methods for Early Detection of European Green Crab

European green crabs are one of the most widespread marine invasive species on the planet. Where they are abundant, green crabs compete with other crabs and disturb sediment which can lead to loss of eelgrass and associated habitat essential for commercial, cultural, and ecologically important fish and invertebrate species. Green crab also are a major predator of clams, mussels, and oysters.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Development and Refinement of Methods for Early Detection of European Green Crab

Development and Refinement of Methods for Early Detection of European Green Crab

European green crabs are one of the most widespread marine invasive species on the planet. Where they are abundant, green crabs compete with other crabs and disturb sediment which can lead to loss of eelgrass and associated habitat essential for commercial, cultural, and ecologically important fish and invertebrate species. Green crab also are a major predator of clams, mussels, and oysters.
Learn More
Coastal bluff near the Elwha River, Washington, showing variation in elevation and vegetative cover

Native and Invasive Bivalves in the Pacific Northwest: Co-occurrence, Habitat Associations and Potential Competition in the Face of Climate Change

Native mussels are in precipitous decline across North America. As part of the Confederated Tribes of the Umatilla Indian Reservation’s (CTUIR) First Foods management framework that places significant value on the cultural importance of traditional food resources, they have been identified as a top conservation priority in the Pacific Northwest. Freshwater mussels are a vital component...
By
Climate Adaptation Science Centers
Native and Invasive Bivalves in the Pacific Northwest: Co-occurrence, Habitat Associations and Potential Competition in the Face of Climate Change

Native and Invasive Bivalves in the Pacific Northwest: Co-occurrence, Habitat Associations and Potential Competition in the Face of Climate Change

Native mussels are in precipitous decline across North America. As part of the Confederated Tribes of the Umatilla Indian Reservation’s (CTUIR) First Foods management framework that places significant value on the cultural importance of traditional food resources, they have been identified as a top conservation priority in the Pacific Northwest. Freshwater mussels are a vital component of river
Learn More
Map of study area

Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

The ecological and economic costs of an invasive quagga or zebra mussel infestation in the Pacific Northwest of the U.S. would be significant. The development of invasive mussel monitoring programs in the Pacific Northwest provides a unique opportunity to evaluate a regional invasive species detection effort early in its development. Although efforts are underway to monitor for the presence of...
By
Ecosystems Mission Area, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

The ecological and economic costs of an invasive quagga or zebra mussel infestation in the Pacific Northwest of the U.S. would be significant. The development of invasive mussel monitoring programs in the Pacific Northwest provides a unique opportunity to evaluate a regional invasive species detection effort early in its development. Although efforts are underway to monitor for the presence of...
Learn More

Composite relative risk indices for dreissenid mussel introductions in the Missouri River Basin: scripts and output Composite relative risk indices for dreissenid mussel introductions in the Missouri River Basin: scripts and output

This data product develops a composite relative risk index (CRR) for watersheds within the Missouri River Basin, a region in the U.S. on the front line of dreissenid spread. The CRR is developed using datasets in order to account for the direct and indirect damages from a potential infestation along with the risk of an infestation occurring with a HUC10 watershed. Included are indices...
By
Wetland and Aquatic Research Center
Map of Missouri River Basin showing risk of Dreissenid Mussel infestation
Mussel Infestation Risk for the Missouri River Basin
Mussel Infestation Risk for the Missouri River Basin
Map of Missouri River Basin showing risk of Dreissenid Mussel infestation

Mussel Infestation Risk for the Missouri River Basin

Mussel Infestation Risk for the Missouri River Basin

Example of model results for the Missouri River Basin, illustrating that the risk of infestation is not equal across a watershed. This reinforces the value of using these risk assessment models in places like the Columbia River basin so monitoring, control and mitigation actions can be targeted.

By
Western Fisheries Research Center
Map of Missouri River Basin showing risk of Dreissenid Mussel infestation

Mussel Infestation Risk for the Missouri River Basin

Mussel Infestation Risk for the Missouri River Basin

Example of model results for the Missouri River Basin, illustrating that the risk of infestation is not equal across a watershed. This reinforces the value of using these risk assessment models in places like the Columbia River basin so monitoring, control and mitigation actions can be targeted.

By
Western Fisheries Research Center
Filter Total Items: 59

The transition from resistance to acceptance: Managing a marine invasive species in a changing world The transition from resistance to acceptance: Managing a marine invasive species in a changing world

Marine invasive species can transform coastal ecosystems, yet mitigating their effects can be difficult, and even impractical. Often, marine invasive species are managed at poorly matched spatial scales, and at the same time, rates of spread and establishment are increasing under climate change and can outpace resources available for population suppression. These circumstances challenge
Authors
Abigail G. Keller, Timothy D. Counihan, Edwin D. Grosholz, Carl Boettiger
By
Ecosystems Mission Area, Western Fisheries Research Center

Can big data inform invasive dreissenid mussel risk assessments of habitat suitability? Can big data inform invasive dreissenid mussel risk assessments of habitat suitability?

Invasion risk assessments of habitat suitability provide insight on early detection effort allocation; however, sufficient data are rarely available to inform assessments. We explored tradeoffs of leveraging big data from the National Water Quality Portal (WQP), a standardized water quality database in the United States, to inform calcium- and pH-based risk assessments of invasive mussel
Authors
Adam Sepulveda, Joshua A. Gage, Timothy D. Counihan, Anthony F. Prisciandaro
By
Ecosystems Mission Area, Northern Rocky Mountain Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Don’t move a mussel: The role of key environmental drivers and management scale in assessing spatial variation in dreissenid spread risk in the Missouri River Basin Don’t move a mussel: The role of key environmental drivers and management scale in assessing spatial variation in dreissenid spread risk in the Missouri River Basin

The spread of non-native freshwater mussels in North America is a growing threat that has already resulted in substantial ecological and economic damage to infested areas. A primary vector by which invasive mussels spread is watercraft that are transported over land from an infested waterbody to an uninfested waterbody. Management efforts such as watercraft inspection and detection...
Authors
Joseph Raymond, Lucas Bair, Timothy D. Counihan, Wesley Daniel, Sofie Duntugan, Matthew Neilson, Michael R. Springborn
By
Ecosystems Mission Area, Southwest Biological Science Center

Vertebrates in trade that pose high invasion risk to the United States Vertebrates in trade that pose high invasion risk to the United States

The United States imports thousands of live vertebrate species annually as part of legal trade. Escapes and releases from captivity are major pathways of invasion, however, the risk posed by the thousands of imported vertebrate species has not been systematically assessed. We conducted a horizon scan that used a data-driven climate match to filter a list of nearly 15,000 taxa drawn from...
Authors
Wesley Daniel, Helen Sofaer, Catherine S. Jarnevich, Richard A. Erickson, Brett Alexander DeGregorio, Peder Scott Engelstad, Jonathan A. Freedman, Susan Canavan, Emily M. Dean, Michael J Adams, Charmayne L. Anderson, Mindy Barnett, Marybeth K. Brey, Kyle J. Brumm, Matthew S. Bunting, Emily Caffrey, Laura Cardador, Jacoby Carter, Phillip Cassey, Duane Chapman, Natalie M. Claunch, Timothy D. Counihan, Kristin P. Davis, Anant Deshwal, Andrew K. Douglas, Corey Garland Dunn, Chase Ehlo, Katie Everett, Jason M. Gleditsch, Andrew Grosse, Zoey Hendrickson, Steven C. Hess, Jeffrey E. Hill, Nick D. Holmes, Ana V. Longo, Julie L. Lockwood, Doran M. Mason, Ashley McDonald, Matthew Neilson, Kristen M. Reaver, Robert Reed, Caleb Powell Roberts, Jane S. Rogosch, Christina Romagosa, James C. Russell, Annie Simpson, Scott A. Smith, Jinelle Sperry, Quenton M. Tuckett, Kurt VerCauteren, J. Hardin Waddle, Christian Wanamaker, John D. Willson, Arden Williams, Deah Lieurance
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

How much trapping effort is needed for early detection of European green crab? How much trapping effort is needed for early detection of European green crab?

We present a case study using trapping data and species accumulation theory to assess the sampling effort needed to detect species that are rare in habitats sampled as part of the management of invasive European green crab Carcinus maenas on the coast of Washington State and Salish Sea shorelines, such as is desired for early detection of invasive species. In response to detections of...
Authors
Timothy D. Counihan, Theresa Thom
By
Ecosystems Mission Area, Western Fisheries Research Center

Zebra and Quagga mussels in the United States—Dreissenid mussel research by the U.S. Geological Survey Zebra and Quagga mussels in the United States—Dreissenid mussel research by the U.S. Geological Survey

The U.S. Geological Survey (USGS) delivers high-quality data, technologies, and decision-support tools to help managers both reduce existing populations and control the spread of dreissenid mussels. The USGS researches ecology, biology, risk assessment, and early detection and rapid response methods; provides decision support; and develops and tests control measures.
Authors
Cayla R. Morningstar, Patrick M. Kocovsky, Michael E. Colvin, Timothy D. Counihan, Wesley M. Daniel, Peter C. Esselman, Cathy A. Richter, Adam Sepulveda, Diane L. Waller
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Columbia Environmental Research Center, Great Lakes Science Center, Northern Rocky Mountain Science Center, Upper Midwest Environmental Sciences Center, Western Fisheries Research Center, Wetland and Aquatic Research Center

Broadscale distribution, abundance and habitat associations of the invasive Asian clam (Corbicula fluminea) in the lower Columbia River, USA Broadscale distribution, abundance and habitat associations of the invasive Asian clam (Corbicula fluminea) in the lower Columbia River, USA

The Asian clam, Corbicula fluminea, is an invasive freshwater bivalve that has established populations across the globe and is known to have deleterious effects on natural and human systems. Yet, despite being present in the Columbia River (CR) for nearly a century, little is known about this invader's basic biology and ecology in this large river system. Thus, we undertook a field study...
Authors
Salvador B. Robb-Chavez, Stephen M. Bollens, Gretchen Rollwagen-Bollens, Timothy D. Counihan
By
Ecosystems Mission Area, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Identifying research in support of the management and control of dreissenid mussels in the western United States Identifying research in support of the management and control of dreissenid mussels in the western United States

On February 9–10, 2022, the Pacific States Marine Fisheries Commission, U.S. Fish and Wildlife Service, U.S. Geological Survey, and Washington State University hosted a workshop to establish research priorities that support the implementation of action items listed in a current invasive species management plan, the Quagga and Zebra Mussel Action Plan (QZAP) 2.0, that are intended to...
Authors
Timothy D. Counihan, Lisa DeBruyckere, Stephen M. Bollens, Stephen Phillips, Theresa Thom, Barak Shemai
By
Ecosystems Mission Area, Western Fisheries Research Center

Framework for the development of the Columbia River mainstem fish tissue and water quality monitoring program - Bonneville Dam to Canadian border Framework for the development of the Columbia River mainstem fish tissue and water quality monitoring program - Bonneville Dam to Canadian border

The Columbia River provides important cultural, economic, and ecological services to a significant portion of the United States. Anadromous and resident fish species and other wildlife are integrated into the cultural traditions of all Tribes in the Columbia River Basin. Salmon, lamprey, sturgeon, and resident fish are an integral part of Tribal religion, culture, and physical sustenance...
Authors
Timothy D. Counihan, Patrick W. Moran, Ian R. Waite, Sherrie Duncan, Laura Shira
By
Ecosystems Mission Area, Water Resources Mission Area, Oregon Water Science Center, Washington Water Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Identifying monitoring information needs that support the management of fish in large rivers Identifying monitoring information needs that support the management of fish in large rivers

Management actions intended to benefit fish in large rivers can directly or indirectly affect multiple ecosystem components. Without consideration of the effects of management on non-target ecosystem components, unintended consequences may limit management efficacy. Monitoring can help clarify the effects of management actions, including on non-target ecosystem components, but only if...
Authors
Timothy D. Counihan, Kristen L. Bouska, Shannon K. Brewer, R. B. Jacobson, Andrew F. Casper, Colin G. Chapman, Ian R. Waite, Kenneth R. Sheehan, Mark Pyron, Elise R. Irwin, Karen Riva-Murray, Alexa McKerrow, Jennifer M. Bayer
By
Ecosystems Mission Area, Water Resources Mission Area, Cooperative Research Units, Species Management Research Program, New York Water Science Center, Oregon Water Science Center, Upper Midwest Water Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

An experimental evaluation of the efficacy of imaging flow cytometry (FlowCam) for detecting invasive Dreissened and Corbiculid bivalve veligers An experimental evaluation of the efficacy of imaging flow cytometry (FlowCam) for detecting invasive Dreissened and Corbiculid bivalve veligers

Zebra (Dreissena polymorpha) and quagga (D. bugensis) mussels, first introduced from central Asia into the Great Lakes of North America in the late 1980s, have crossed the continental divide and more recently spread across western North America. At the same time, several new technologies have been developed for the early detection of dreissenids, including the FlowCam, a digital imaging...
Authors
Whitney Hassett, Julie Zimmerman, Gretchen Rollwagen-Bollens, Stephen M. Bollens, Timothy D. Counihan
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Calcium concentrations in the lower Columbia River, USA, are generally sufficient to support invasive bivalve spread Calcium concentrations in the lower Columbia River, USA, are generally sufficient to support invasive bivalve spread

Dissolved calcium concentration [Ca2+] is thought to be a major factor limiting the establishment and thus the spread of invasive bivalves such as zebra (Dreissena polymorpha) and quagga (Dreissena bugensis) mussels. We measured [Ca2+] in 168 water samples collected along ~100 river-km of the lower Columbia River, USA, between June 2018 and March 2020. We found [Ca2+] to range from 13 to...
Authors
Stephen M. Bollens, John A. Harrison, Marc G. Kramer, Gretchen Rollwagen-Bollens, Timothy D. Counihan, Salvador B. Robb-Chavez, Sean T. Nolan
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

webDR: Spatial exploration of invasion risk of dreissenid mussels in the Missouri River Basin at the HUC10 watershed scale webDR: Spatial exploration of invasion risk of dreissenid mussels in the Missouri River Basin at the HUC10 watershed scale

The spread of non-native dreissenid mussels across North America has resulted in significant ecological and economic damage. Management efforts implementing early detection efforts (including watercraft inspections) may help reduce potential spread and new introductions, but optimizing effective deployment of these efforts in a resource-constrained environment is challenging. Raymond et...
By
Wetland and Aquatic Research Center
The Secret Lives of Freshwater Mussels: Learning About the Distribution, Abundance, and Habitats of Native Mussels in the Pacific Northwest

The Secret Lives of Freshwater Mussels: Learning About the Distribution, Abundance, and Habitats of Native Mussels in the Pacific Northwest

Native mussels play an important role in both river and human communities. In rivers, native mussels filter water and recycle nutrients to support a...

Read Article
Western Fisheries Science News, March 2017 | Issue 5.3

Western Fisheries Science News, March 2017 | Issue 5.3

Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

Read Article

Science and Products

european green crab

Development and Refinement of Methods for Early Detection of European Green Crab

European green crabs are one of the most widespread marine invasive species on the planet. Where they are abundant, green crabs compete with other crabs and disturb sediment which can lead to loss of eelgrass and associated habitat essential for commercial, cultural, and ecologically important fish and invertebrate species. Green crab also are a major predator of clams, mussels, and oysters.
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Development and Refinement of Methods for Early Detection of European Green Crab

Development and Refinement of Methods for Early Detection of European Green Crab

European green crabs are one of the most widespread marine invasive species on the planet. Where they are abundant, green crabs compete with other crabs and disturb sediment which can lead to loss of eelgrass and associated habitat essential for commercial, cultural, and ecologically important fish and invertebrate species. Green crab also are a major predator of clams, mussels, and oysters.
Learn More
Coastal bluff near the Elwha River, Washington, showing variation in elevation and vegetative cover

Native and Invasive Bivalves in the Pacific Northwest: Co-occurrence, Habitat Associations and Potential Competition in the Face of Climate Change

Native mussels are in precipitous decline across North America. As part of the Confederated Tribes of the Umatilla Indian Reservation’s (CTUIR) First Foods management framework that places significant value on the cultural importance of traditional food resources, they have been identified as a top conservation priority in the Pacific Northwest. Freshwater mussels are a vital component...
By
Climate Adaptation Science Centers
Native and Invasive Bivalves in the Pacific Northwest: Co-occurrence, Habitat Associations and Potential Competition in the Face of Climate Change

Native and Invasive Bivalves in the Pacific Northwest: Co-occurrence, Habitat Associations and Potential Competition in the Face of Climate Change

Native mussels are in precipitous decline across North America. As part of the Confederated Tribes of the Umatilla Indian Reservation’s (CTUIR) First Foods management framework that places significant value on the cultural importance of traditional food resources, they have been identified as a top conservation priority in the Pacific Northwest. Freshwater mussels are a vital component of river
Learn More
Map of study area

Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

The ecological and economic costs of an invasive quagga or zebra mussel infestation in the Pacific Northwest of the U.S. would be significant. The development of invasive mussel monitoring programs in the Pacific Northwest provides a unique opportunity to evaluate a regional invasive species detection effort early in its development. Although efforts are underway to monitor for the presence of...
By
Ecosystems Mission Area, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

The ecological and economic costs of an invasive quagga or zebra mussel infestation in the Pacific Northwest of the U.S. would be significant. The development of invasive mussel monitoring programs in the Pacific Northwest provides a unique opportunity to evaluate a regional invasive species detection effort early in its development. Although efforts are underway to monitor for the presence of...
Learn More

Composite relative risk indices for dreissenid mussel introductions in the Missouri River Basin: scripts and output Composite relative risk indices for dreissenid mussel introductions in the Missouri River Basin: scripts and output

This data product develops a composite relative risk index (CRR) for watersheds within the Missouri River Basin, a region in the U.S. on the front line of dreissenid spread. The CRR is developed using datasets in order to account for the direct and indirect damages from a potential infestation along with the risk of an infestation occurring with a HUC10 watershed. Included are indices...
By
Wetland and Aquatic Research Center
Map of Missouri River Basin showing risk of Dreissenid Mussel infestation
Mussel Infestation Risk for the Missouri River Basin
Mussel Infestation Risk for the Missouri River Basin
Map of Missouri River Basin showing risk of Dreissenid Mussel infestation

Mussel Infestation Risk for the Missouri River Basin

Mussel Infestation Risk for the Missouri River Basin

Example of model results for the Missouri River Basin, illustrating that the risk of infestation is not equal across a watershed. This reinforces the value of using these risk assessment models in places like the Columbia River basin so monitoring, control and mitigation actions can be targeted.

By
Western Fisheries Research Center
Map of Missouri River Basin showing risk of Dreissenid Mussel infestation

Mussel Infestation Risk for the Missouri River Basin

Mussel Infestation Risk for the Missouri River Basin

Example of model results for the Missouri River Basin, illustrating that the risk of infestation is not equal across a watershed. This reinforces the value of using these risk assessment models in places like the Columbia River basin so monitoring, control and mitigation actions can be targeted.

By
Western Fisheries Research Center
Filter Total Items: 59

The transition from resistance to acceptance: Managing a marine invasive species in a changing world The transition from resistance to acceptance: Managing a marine invasive species in a changing world

Marine invasive species can transform coastal ecosystems, yet mitigating their effects can be difficult, and even impractical. Often, marine invasive species are managed at poorly matched spatial scales, and at the same time, rates of spread and establishment are increasing under climate change and can outpace resources available for population suppression. These circumstances challenge
Authors
Abigail G. Keller, Timothy D. Counihan, Edwin D. Grosholz, Carl Boettiger
By
Ecosystems Mission Area, Western Fisheries Research Center

Can big data inform invasive dreissenid mussel risk assessments of habitat suitability? Can big data inform invasive dreissenid mussel risk assessments of habitat suitability?

Invasion risk assessments of habitat suitability provide insight on early detection effort allocation; however, sufficient data are rarely available to inform assessments. We explored tradeoffs of leveraging big data from the National Water Quality Portal (WQP), a standardized water quality database in the United States, to inform calcium- and pH-based risk assessments of invasive mussel
Authors
Adam Sepulveda, Joshua A. Gage, Timothy D. Counihan, Anthony F. Prisciandaro
By
Ecosystems Mission Area, Northern Rocky Mountain Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Don’t move a mussel: The role of key environmental drivers and management scale in assessing spatial variation in dreissenid spread risk in the Missouri River Basin Don’t move a mussel: The role of key environmental drivers and management scale in assessing spatial variation in dreissenid spread risk in the Missouri River Basin

The spread of non-native freshwater mussels in North America is a growing threat that has already resulted in substantial ecological and economic damage to infested areas. A primary vector by which invasive mussels spread is watercraft that are transported over land from an infested waterbody to an uninfested waterbody. Management efforts such as watercraft inspection and detection...
Authors
Joseph Raymond, Lucas Bair, Timothy D. Counihan, Wesley Daniel, Sofie Duntugan, Matthew Neilson, Michael R. Springborn
By
Ecosystems Mission Area, Southwest Biological Science Center

Vertebrates in trade that pose high invasion risk to the United States Vertebrates in trade that pose high invasion risk to the United States

The United States imports thousands of live vertebrate species annually as part of legal trade. Escapes and releases from captivity are major pathways of invasion, however, the risk posed by the thousands of imported vertebrate species has not been systematically assessed. We conducted a horizon scan that used a data-driven climate match to filter a list of nearly 15,000 taxa drawn from...
Authors
Wesley Daniel, Helen Sofaer, Catherine S. Jarnevich, Richard A. Erickson, Brett Alexander DeGregorio, Peder Scott Engelstad, Jonathan A. Freedman, Susan Canavan, Emily M. Dean, Michael J Adams, Charmayne L. Anderson, Mindy Barnett, Marybeth K. Brey, Kyle J. Brumm, Matthew S. Bunting, Emily Caffrey, Laura Cardador, Jacoby Carter, Phillip Cassey, Duane Chapman, Natalie M. Claunch, Timothy D. Counihan, Kristin P. Davis, Anant Deshwal, Andrew K. Douglas, Corey Garland Dunn, Chase Ehlo, Katie Everett, Jason M. Gleditsch, Andrew Grosse, Zoey Hendrickson, Steven C. Hess, Jeffrey E. Hill, Nick D. Holmes, Ana V. Longo, Julie L. Lockwood, Doran M. Mason, Ashley McDonald, Matthew Neilson, Kristen M. Reaver, Robert Reed, Caleb Powell Roberts, Jane S. Rogosch, Christina Romagosa, James C. Russell, Annie Simpson, Scott A. Smith, Jinelle Sperry, Quenton M. Tuckett, Kurt VerCauteren, J. Hardin Waddle, Christian Wanamaker, John D. Willson, Arden Williams, Deah Lieurance
By
Ecosystems Mission Area, Wetland and Aquatic Research Center

How much trapping effort is needed for early detection of European green crab? How much trapping effort is needed for early detection of European green crab?

We present a case study using trapping data and species accumulation theory to assess the sampling effort needed to detect species that are rare in habitats sampled as part of the management of invasive European green crab Carcinus maenas on the coast of Washington State and Salish Sea shorelines, such as is desired for early detection of invasive species. In response to detections of...
Authors
Timothy D. Counihan, Theresa Thom
By
Ecosystems Mission Area, Western Fisheries Research Center

Zebra and Quagga mussels in the United States—Dreissenid mussel research by the U.S. Geological Survey Zebra and Quagga mussels in the United States—Dreissenid mussel research by the U.S. Geological Survey

The U.S. Geological Survey (USGS) delivers high-quality data, technologies, and decision-support tools to help managers both reduce existing populations and control the spread of dreissenid mussels. The USGS researches ecology, biology, risk assessment, and early detection and rapid response methods; provides decision support; and develops and tests control measures.
Authors
Cayla R. Morningstar, Patrick M. Kocovsky, Michael E. Colvin, Timothy D. Counihan, Wesley M. Daniel, Peter C. Esselman, Cathy A. Richter, Adam Sepulveda, Diane L. Waller
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Columbia Environmental Research Center, Great Lakes Science Center, Northern Rocky Mountain Science Center, Upper Midwest Environmental Sciences Center, Western Fisheries Research Center, Wetland and Aquatic Research Center

Broadscale distribution, abundance and habitat associations of the invasive Asian clam (Corbicula fluminea) in the lower Columbia River, USA Broadscale distribution, abundance and habitat associations of the invasive Asian clam (Corbicula fluminea) in the lower Columbia River, USA

The Asian clam, Corbicula fluminea, is an invasive freshwater bivalve that has established populations across the globe and is known to have deleterious effects on natural and human systems. Yet, despite being present in the Columbia River (CR) for nearly a century, little is known about this invader's basic biology and ecology in this large river system. Thus, we undertook a field study...
Authors
Salvador B. Robb-Chavez, Stephen M. Bollens, Gretchen Rollwagen-Bollens, Timothy D. Counihan
By
Ecosystems Mission Area, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Identifying research in support of the management and control of dreissenid mussels in the western United States Identifying research in support of the management and control of dreissenid mussels in the western United States

On February 9–10, 2022, the Pacific States Marine Fisheries Commission, U.S. Fish and Wildlife Service, U.S. Geological Survey, and Washington State University hosted a workshop to establish research priorities that support the implementation of action items listed in a current invasive species management plan, the Quagga and Zebra Mussel Action Plan (QZAP) 2.0, that are intended to...
Authors
Timothy D. Counihan, Lisa DeBruyckere, Stephen M. Bollens, Stephen Phillips, Theresa Thom, Barak Shemai
By
Ecosystems Mission Area, Western Fisheries Research Center

Framework for the development of the Columbia River mainstem fish tissue and water quality monitoring program - Bonneville Dam to Canadian border Framework for the development of the Columbia River mainstem fish tissue and water quality monitoring program - Bonneville Dam to Canadian border

The Columbia River provides important cultural, economic, and ecological services to a significant portion of the United States. Anadromous and resident fish species and other wildlife are integrated into the cultural traditions of all Tribes in the Columbia River Basin. Salmon, lamprey, sturgeon, and resident fish are an integral part of Tribal religion, culture, and physical sustenance...
Authors
Timothy D. Counihan, Patrick W. Moran, Ian R. Waite, Sherrie Duncan, Laura Shira
By
Ecosystems Mission Area, Water Resources Mission Area, Oregon Water Science Center, Washington Water Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Identifying monitoring information needs that support the management of fish in large rivers Identifying monitoring information needs that support the management of fish in large rivers

Management actions intended to benefit fish in large rivers can directly or indirectly affect multiple ecosystem components. Without consideration of the effects of management on non-target ecosystem components, unintended consequences may limit management efficacy. Monitoring can help clarify the effects of management actions, including on non-target ecosystem components, but only if...
Authors
Timothy D. Counihan, Kristen L. Bouska, Shannon K. Brewer, R. B. Jacobson, Andrew F. Casper, Colin G. Chapman, Ian R. Waite, Kenneth R. Sheehan, Mark Pyron, Elise R. Irwin, Karen Riva-Murray, Alexa McKerrow, Jennifer M. Bayer
By
Ecosystems Mission Area, Water Resources Mission Area, Cooperative Research Units, Species Management Research Program, New York Water Science Center, Oregon Water Science Center, Upper Midwest Water Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

An experimental evaluation of the efficacy of imaging flow cytometry (FlowCam) for detecting invasive Dreissened and Corbiculid bivalve veligers An experimental evaluation of the efficacy of imaging flow cytometry (FlowCam) for detecting invasive Dreissened and Corbiculid bivalve veligers

Zebra (Dreissena polymorpha) and quagga (D. bugensis) mussels, first introduced from central Asia into the Great Lakes of North America in the late 1980s, have crossed the continental divide and more recently spread across western North America. At the same time, several new technologies have been developed for the early detection of dreissenids, including the FlowCam, a digital imaging...
Authors
Whitney Hassett, Julie Zimmerman, Gretchen Rollwagen-Bollens, Stephen M. Bollens, Timothy D. Counihan
By
Ecosystems Mission Area, Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

Calcium concentrations in the lower Columbia River, USA, are generally sufficient to support invasive bivalve spread Calcium concentrations in the lower Columbia River, USA, are generally sufficient to support invasive bivalve spread

Dissolved calcium concentration [Ca2+] is thought to be a major factor limiting the establishment and thus the spread of invasive bivalves such as zebra (Dreissena polymorpha) and quagga (Dreissena bugensis) mussels. We measured [Ca2+] in 168 water samples collected along ~100 river-km of the lower Columbia River, USA, between June 2018 and March 2020. We found [Ca2+] to range from 13 to...
Authors
Stephen M. Bollens, John A. Harrison, Marc G. Kramer, Gretchen Rollwagen-Bollens, Timothy D. Counihan, Salvador B. Robb-Chavez, Sean T. Nolan
By
Ecosystems Mission Area, Biological Threats and Invasive Species Research Program, Species Management Research Program, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)

webDR: Spatial exploration of invasion risk of dreissenid mussels in the Missouri River Basin at the HUC10 watershed scale webDR: Spatial exploration of invasion risk of dreissenid mussels in the Missouri River Basin at the HUC10 watershed scale

The spread of non-native dreissenid mussels across North America has resulted in significant ecological and economic damage. Management efforts implementing early detection efforts (including watercraft inspections) may help reduce potential spread and new introductions, but optimizing effective deployment of these efforts in a resource-constrained environment is challenging. Raymond et...
By
Wetland and Aquatic Research Center
The Secret Lives of Freshwater Mussels: Learning About the Distribution, Abundance, and Habitats of Native Mussels in the Pacific Northwest

The Secret Lives of Freshwater Mussels: Learning About the Distribution, Abundance, and Habitats of Native Mussels in the Pacific Northwest

Native mussels play an important role in both river and human communities. In rivers, native mussels filter water and recycle nutrients to support a...

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Western Fisheries Science News, March 2017 | Issue 5.3

Western Fisheries Science News, March 2017 | Issue 5.3

Early Detection Monitoring May Not Be Sufficient for Invasive Mussels in the Columbia River Basin

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