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• 11. [Article] Cost-efficient management of aquatic invasive species : application to New Zealand mudsnails in the Pacific Northwest

  By affecting the ecological, pecuniary and aesthetic productivity of ecosystems, invasive species (IS) increase production and management costs to business, while straining public agencies' budgets with ...

  Citation × Citation Citation Abstract Copy Title: Cost-efficient management of aquatic invasive species : application to New Zealand mudsnails in the Pacific Northwest Author: Lim, Youngah By affecting the ecological, pecuniary and aesthetic productivity of ecosystems, invasive species (IS) increase production and management costs to business, while straining public agencies' budgets with monitoring, enforcement and management efforts. Understanding invasion pathways or vectors, and identifying costs and benefits of alternative management strategies are critical to public and private decision making in agriculture, natural resource and recreation industries. This study develops an integrated spatial framework to measure IS risk and cost-efficiency of alternative IS management strategies. For a given spatial unit, the framework weighs expected damages, based on measured IS risk, against the cost of alternative management strategies, i.e. spatial cost minimization. The study then applied the spatial cost minimization framework to the case of New Zealand mudsnails, Potamopyrgus antipodarum, (NZMS) in the Pacific Northwest (PNW) using data from a variety of sources. The first stage of the integrated framework is the measurement of NZMS establishment risk, which is estimated as a combination of anthropogenic introduction risk and habitat suitability risk. Since recreational boats are a main vector to disperse NZMS, the normalized boat flows in the PNW states—Idaho, Oregon, and Washington—are used as a proxy for the anthropogenic introduction risk. An environmental niche model then revealed the relationship between environmental features and NZMS presence, i.e. habitat suitability risk. Results suggest that distance, area size, water body concentration, and accessibility are major determinants of PNW recreational boat flows. Environmental characteristics such as elevation, geologic features, precipitation in January, March, and September, as well as the minimum temperature of June, July, and August, and the maximum temperature of June, August, and October are important determinants of PNW's habitat suitability for NZMS. Potential damages arising from NZMS include anglers' utility loss, which is caused by aquatic habitat degradation due to NZMS invasion, and biofouling influence on hydroelectricity plants, drinking water treatment plants, and boats. Because NZMS economic damages and related management cost are not yet fully identified in the literature, damages and management cost of zebra mussels serve as proxies for those of NZMS. Expected damages are then derived as the product of NZMS establishment risk from the first stage and potential damages noted above. Statewide management cost information is compiled from a phone survey of PNW invasive species field managers. Statewide and local management strategies are prevention, early detection and rapid response and its follow-up (EDRR plus) and ex-post management without EDRR. Local strategies additionally include boater decontamination and fish hatchery prevention efforts. Finally, the spatial cost minimization problem evaluates expected damages against the cost of each alternative management strategy (statewide and local). Solutions to this minimization problem, i.e. cost-efficient strategies, are derived for individual spatial units in each of the three PNW states. Reflecting uncertainty in the relationship between NZMS impacts and management, the spatial cost minimization is solved under different scenarios: unconstrained, NZMS damages are a fraction of those of zebra mussels, variation in the effectiveness of statewide and local management strategies, a budget constraint, and targeted NZMS risk level constraint. Results show that statewide prevention, local boater decontamination and fish hatchery prevention are the cost-efficient strategies for managing NZMS in the Pacific Northwest in most cases. Title: Cost-efficient management of aquatic invasive species : application to New Zealand mudsnails in the Pacific Northwest Author: Lim, Youngah By affecting the ecological, pecuniary and aesthetic productivity of ecosystems, invasive species (IS) increase production and management costs to business, while straining public agencies' budgets with monitoring, enforcement and management efforts. Understanding invasion pathways or vectors, and identifying costs and benefits of alternative management strategies are critical to public and private decision making in agriculture, natural resource and recreation industries. This study develops an integrated spatial framework to measure IS risk and cost-efficiency of alternative IS management strategies. For a given spatial unit, the framework weighs expected damages, based on measured IS risk, against the cost of alternative management strategies, i.e. spatial cost minimization. The study then applied the spatial cost minimization framework to the case of New Zealand mudsnails, Potamopyrgus antipodarum, (NZMS) in the Pacific Northwest (PNW) using data from a variety of sources. The first stage of the integrated framework is the measurement of NZMS establishment risk, which is estimated as a combination of anthropogenic introduction risk and habitat suitability risk. Since recreational boats are a main vector to disperse NZMS, the normalized boat flows in the PNW states—Idaho, Oregon, and Washington—are used as a proxy for the anthropogenic introduction risk. An environmental niche model then revealed the relationship between environmental features and NZMS presence, i.e. habitat suitability risk. Results suggest that distance, area size, water body concentration, and accessibility are major determinants of PNW recreational boat flows. Environmental characteristics such as elevation, geologic features, precipitation in January, March, and September, as well as the minimum temperature of June, July, and August, and the maximum temperature of June, August, and October are important determinants of PNW's habitat suitability for NZMS. Potential damages arising from NZMS include anglers' utility loss, which is caused by aquatic habitat degradation due to NZMS invasion, and biofouling influence on hydroelectricity plants, drinking water treatment plants, and boats. Because NZMS economic damages and related management cost are not yet fully identified in the literature, damages and management cost of zebra mussels serve as proxies for those of NZMS. Expected damages are then derived as the product of NZMS establishment risk from the first stage and potential damages noted above. Statewide management cost information is compiled from a phone survey of PNW invasive species field managers. Statewide and local management strategies are prevention, early detection and rapid response and its follow-up (EDRR plus) and ex-post management without EDRR. Local strategies additionally include boater decontamination and fish hatchery prevention efforts. Finally, the spatial cost minimization problem evaluates expected damages against the cost of each alternative management strategy (statewide and local). Solutions to this minimization problem, i.e. cost-efficient strategies, are derived for individual spatial units in each of the three PNW states. Reflecting uncertainty in the relationship between NZMS impacts and management, the spatial cost minimization is solved under different scenarios: unconstrained, NZMS damages are a fraction of those of zebra mussels, variation in the effectiveness of statewide and local management strategies, a budget constraint, and targeted NZMS risk level constraint. Results show that statewide prevention, local boater decontamination and fish hatchery prevention are the cost-efficient strategies for managing NZMS in the Pacific Northwest in most cases. Close

• 12. [Article] Native wildlife species (Pseudacris regilla) utilizing invasive-dominated habitat in a highly disturbed ecosystem

  The Pacific Treefrog (Pseudacris regilla) is commonly encountered throughout the Pacific Northwest and can be an indicator for ecosystem health. At each life stage P. regilla utilizes a different habitat ...

  Citation × Citation Citation Abstract Copy Title: Native wildlife species (Pseudacris regilla) utilizing invasive-dominated habitat in a highly disturbed ecosystem Author: Epperly, Haley K. The Pacific Treefrog (Pseudacris regilla) is commonly encountered throughout the Pacific Northwest and can be an indicator for ecosystem health. At each life stage P. regilla utilizes a different habitat and therefore it is important to understand habitat use at all life stages to properly manage the ecosystem, however, few studies have been conducted on the juvenile form. To determine juvenile P. regilla riparian habitat use, and thus create appropriate habitat management plans, field work must be conducted. Transect surveys were conducted at two highly disturbed ephemeral ponds with a variety of open and dense vegetative riparian habitats in the Willamette Valley, Oregon. P. regilla was found in the highest abundance in habitat shaded by a thin border of Oregon Ash around the pond perimeter, and was composed mainly of Himalayan blackberry (Rubus armeniacus). This habitat provided a moist region where P. regilla could avoid desiccation and possibly predation. Rubus armeniacus is non-native and often found in highly disturbed ecosystems. Pseudacris regilla’s use of R. armeniacus as habitat suggests that P. regilla is a generalist species capable of utilizing invasive plant species to its advantage. Future research is needed comparing P. regilla habitat use in invasive-dominated verse native-dominated ephemeral ponds. Title: Native wildlife species (Pseudacris regilla) utilizing invasive-dominated habitat in a highly disturbed ecosystem Author: Epperly, Haley K. The Pacific Treefrog (Pseudacris regilla) is commonly encountered throughout the Pacific Northwest and can be an indicator for ecosystem health. At each life stage P. regilla utilizes a different habitat and therefore it is important to understand habitat use at all life stages to properly manage the ecosystem, however, few studies have been conducted on the juvenile form. To determine juvenile P. regilla riparian habitat use, and thus create appropriate habitat management plans, field work must be conducted. Transect surveys were conducted at two highly disturbed ephemeral ponds with a variety of open and dense vegetative riparian habitats in the Willamette Valley, Oregon. P. regilla was found in the highest abundance in habitat shaded by a thin border of Oregon Ash around the pond perimeter, and was composed mainly of Himalayan blackberry (Rubus armeniacus). This habitat provided a moist region where P. regilla could avoid desiccation and possibly predation. Rubus armeniacus is non-native and often found in highly disturbed ecosystems. Pseudacris regilla’s use of R. armeniacus as habitat suggests that P. regilla is a generalist species capable of utilizing invasive plant species to its advantage. Future research is needed comparing P. regilla habitat use in invasive-dominated verse native-dominated ephemeral ponds. Close

• 13. [Article] Survey of Aquatic Plants in Corps of Engineers Reservoirs

  A survey of aquatic plants in a selected Corps of Engineers reservoirs in Oregon was conducted. Cottage Grove, Dorena, Fern Ridge, Dexter and Willow Creek Reservoirs contained abundant aquatic plants. ...

  Citation × Citation Citation Abstract Copy Title: Survey of Aquatic Plants in Corps of Engineers Reservoirs Author: Walker, Kimberly D., Sytsma, Mark D. Year: 2000 A survey of aquatic plants in a selected Corps of Engineers reservoirs in Oregon was conducted. Cottage Grove, Dorena, Fern Ridge, Dexter and Willow Creek Reservoirs contained abundant aquatic plants. Potamogeton pectinatus and Potamogeton epihydrous were the most common native plant species. Myriophyllum aquaticum and Potamogeton crispus were the most widespread nonnative plants. Species richness in the reservoirs was correlated with trophic status and basin morphology. Shallow reservoirs that included extensive areas of nutrient-rich sediments that were historic flood plain soils supported the greatest biomass and number of species. Mesotrophic reservoirs had lower species diversity. Oligotrophic reservoirs with steep basin morphology, nutrient-poor sediments, and large water level fluctuation did not support aquatic vascular plant populations. An aquatic plant management program should be developed for the reservoirs. The program should focus on preventing introduction and spread of invasive aquatic plants and on rapid response procedures for new infestations. Those reservoirs that currently support aquatic macrophyte communities may be most susceptible to invasion and rapid spread of new introductions, however, even reservoirs that are currently free of aquatic plants may be invaded. Early detection is critical to effective implementation of rapid response procedures for invasive aquatic plant control. Annual survey of the most productive reservoirs is recommended to document introduction of new species. Plant community composition changes during the growing season, and multiple surveys during the growing season are preferred over one-time visits. Management of established populations of invasive species in the reservoirs will be difficult. Where invasive plant abundance is limited in area and number management activities may be implemented to slow dispersal and perhaps eradicate the plants. Integrated pest management procedures should be followed to ensure effective and economical aquatic plant control. Title: Survey of Aquatic Plants in Corps of Engineers Reservoirs Author: Walker, Kimberly D., Sytsma, Mark D. Year: 2000 A survey of aquatic plants in a selected Corps of Engineers reservoirs in Oregon was conducted. Cottage Grove, Dorena, Fern Ridge, Dexter and Willow Creek Reservoirs contained abundant aquatic plants. Potamogeton pectinatus and Potamogeton epihydrous were the most common native plant species. Myriophyllum aquaticum and Potamogeton crispus were the most widespread nonnative plants. Species richness in the reservoirs was correlated with trophic status and basin morphology. Shallow reservoirs that included extensive areas of nutrient-rich sediments that were historic flood plain soils supported the greatest biomass and number of species. Mesotrophic reservoirs had lower species diversity. Oligotrophic reservoirs with steep basin morphology, nutrient-poor sediments, and large water level fluctuation did not support aquatic vascular plant populations. An aquatic plant management program should be developed for the reservoirs. The program should focus on preventing introduction and spread of invasive aquatic plants and on rapid response procedures for new infestations. Those reservoirs that currently support aquatic macrophyte communities may be most susceptible to invasion and rapid spread of new introductions, however, even reservoirs that are currently free of aquatic plants may be invaded. Early detection is critical to effective implementation of rapid response procedures for invasive aquatic plant control. Annual survey of the most productive reservoirs is recommended to document introduction of new species. Plant community composition changes during the growing season, and multiple surveys during the growing season are preferred over one-time visits. Management of established populations of invasive species in the reservoirs will be difficult. Where invasive plant abundance is limited in area and number management activities may be implemented to slow dispersal and perhaps eradicate the plants. Integrated pest management procedures should be followed to ensure effective and economical aquatic plant control. Close

• 14. [Article] The Ecology and Demography of the Invasive Ascidian Botrylloides violaceus in the Coos Estuary

  133 pages. A thesis presented to the Department of Biology and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring ...

  Citation × Citation Citation Abstract Copy Title: The Ecology and Demography of the Invasive Ascidian Botrylloides violaceus in the Coos Estuary Author: Dorning, Sandra Lynn Year: 2017 133 pages. A thesis presented to the Department of Biology and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring 2017 Title: The Ecology and Demography of the Invasive Ascidian Botrylloides violaceus in the Coos Estuary Author: Dorning, Sandra Lynn Year: 2017 133 pages. A thesis presented to the Department of Biology and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring 2017 Close

• 15. [Article] OSMB Final Report, Task 4: Oregon Lake Watch

  The Oregon Lake Watch (OLW) volunteer monitoring program was resurrected after over a decade in hibernation. The new program was designed to educate the public about threats of aquatic invasive species ...

  Citation × Citation Citation Abstract Copy Title: OSMB Final Report, Task 4: Oregon Lake Watch Author: Strecker, Angela L., Miller, Rich, Morgan, Vanessa Year: 2014 The Oregon Lake Watch (OLW) volunteer monitoring program was resurrected after over a decade in hibernation. The new program was designed to educate the public about threats of aquatic invasive species (AIS), provide early detection of AIS invasions, and provide long term water quality data for the better management of Oregon’s lakes and reservoirs. Protocols were created for citizen scientists to survey for AIS, collect temperature and water clarity data, and record the data through an online data entry portal. An OLW website was developed to educate about AIS and provide survey protocols and identification materials to volunteers. AIS surveys were focused on Watch List Species which are selected AIS that have a negative impact on the beneficial uses of our waterbodies. Eighteen volunteers were trained during five sessions conducted in western and central Oregon. Fourteen of the trained volunteers collected data from sixteen waterbodies. Six Watch List species and one other AIS species were observed in four of the waterbodies. The three Watch List Species observed in Salish Pond and one in Olallie Lake were new observations. Temperature measurements indicated a wide range of thermal profiles and Secchi transparency measurement indicated a range of trophic status from oligotrophic to eutrophic. Title: OSMB Final Report, Task 4: Oregon Lake Watch Author: Strecker, Angela L., Miller, Rich, Morgan, Vanessa Year: 2014 The Oregon Lake Watch (OLW) volunteer monitoring program was resurrected after over a decade in hibernation. The new program was designed to educate the public about threats of aquatic invasive species (AIS), provide early detection of AIS invasions, and provide long term water quality data for the better management of Oregon’s lakes and reservoirs. Protocols were created for citizen scientists to survey for AIS, collect temperature and water clarity data, and record the data through an online data entry portal. An OLW website was developed to educate about AIS and provide survey protocols and identification materials to volunteers. AIS surveys were focused on Watch List Species which are selected AIS that have a negative impact on the beneficial uses of our waterbodies. Eighteen volunteers were trained during five sessions conducted in western and central Oregon. Fourteen of the trained volunteers collected data from sixteen waterbodies. Six Watch List species and one other AIS species were observed in four of the waterbodies. The three Watch List Species observed in Salish Pond and one in Olallie Lake were new observations. Temperature measurements indicated a wide range of thermal profiles and Secchi transparency measurement indicated a range of trophic status from oligotrophic to eutrophic. Close

• 16. [Article] Salinity adaptation of the invasive New Zealand mud snail (Potamopyrgus antipodarum) in the Columbia River estuary (Pacific Northwest, USA): physiological and molecular studies

  This is the publisher’s final pdf. The published article is copyrighted by Springer and can be found at: http://www.springerlink.com/content/1386-2588/. To the best of our knowledge, one or more authors ...

  Citation × Citation Citation Abstract Copy Title: Salinity adaptation of the invasive New Zealand mud snail (Potamopyrgus antipodarum) in the Columbia River estuary (Pacific Northwest, USA): physiological and molecular studies Author: Hoy, Marshal, Reusser, Deborah, Taylor, Louise, Rodriguez, Rusty, Boese, Bruce L. This is the publisher’s final pdf. The published article is copyrighted by Springer and can be found at: http://www.springerlink.com/content/1386-2588/. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. Title: Salinity adaptation of the invasive New Zealand mud snail (Potamopyrgus antipodarum) in the Columbia River estuary (Pacific Northwest, USA): physiological and molecular studies Author: Hoy, Marshal, Reusser, Deborah, Taylor, Louise, Rodriguez, Rusty, Boese, Bruce L. This is the publisher’s final pdf. The published article is copyrighted by Springer and can be found at: http://www.springerlink.com/content/1386-2588/. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. Close

• 17. [Article] Can parasites halt the invader? Mermithid nematodes parasitizing the yellow-legged Asian hornet in France

  The French version of this article is available at: https://peerj.com/articles/947/#supplemental-information

  Citation × Citation Citation Abstract Copy Title: Can parasites halt the invader? Mermithid nematodes parasitizing the yellow-legged Asian hornet in France Author: Justine, Jean-Lou, Rome, Quentin, Villemant, Claire, Zuccon, Dario, Muller, Franck, Poinar, George O. Jr. The French version of this article is available at: https://peerj.com/articles/947/#supplemental-information Title: Can parasites halt the invader? Mermithid nematodes parasitizing the yellow-legged Asian hornet in France Author: Justine, Jean-Lou, Rome, Quentin, Villemant, Claire, Zuccon, Dario, Muller, Franck, Poinar, George O. Jr. The French version of this article is available at: https://peerj.com/articles/947/#supplemental-information Close

• 18. [Article] Re-examining the relationship between invasive lionfish and native grouper in the Caribbean

  This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by PeerJ. The published article can be found at: https://peerj.com/.

  Citation × Citation Citation Abstract Copy Title: Re-examining the relationship between invasive lionfish and native grouper in the Caribbean Author: Hackerott, Serena, Valdivia, Abel, Bruno, John F., Cox, Courtney E., Green, Stephanie J. This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by PeerJ. The published article can be found at: https://peerj.com/. Title: Re-examining the relationship between invasive lionfish and native grouper in the Caribbean Author: Hackerott, Serena, Valdivia, Abel, Bruno, John F., Cox, Courtney E., Green, Stephanie J. This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by PeerJ. The published article can be found at: https://peerj.com/. Close

• 19. [Article] Aquatic Plant Surveys in the Bureau of Land Management, Medford District, 2010-2011

  The introduction of invasive aquatic plant species (IAPS) can cause significant ecological and economic harm. IAPS can displace native aquatic plant species, impair recreation, and degrade water quality. ...

  Citation × Citation Citation Abstract Copy Title: Aquatic Plant Surveys in the Bureau of Land Management, Medford District, 2010-2011 Author: Sytsma, Mark D., Miller, Rich, Morgan, Vanessa Year: 2011 The introduction of invasive aquatic plant species (IAPS) can cause significant ecological and economic harm. IAPS can displace native aquatic plant species, impair recreation, and degrade water quality. Early detection of new invasions can improve chances for successful eradication or containment to reduce the risk of IAPS spread. The Oregon Department of Agriculture (ODA) lists the most egregious offenders as “Noxious Weeds” which are defined as plants classified by the Oregon State Weed Board that are injurious to public health, agriculture, recreation, wildlife, or any public or private property (ODA 2011). Several IAPS classified as noxious have been detected within the Medford District of the Bureau of Land Management (BLM) in Southern Oregon including yellow floating heart (Nymphoides peltata) and yellow flag iris (Iris pseudacorus). During the summers of 2010 and 2011, IAPS surveys were conducted at selected reservoirs, lakes, and river boat launches within the Medford District to determine the extent of IAPS infestations as well as the distributions of native aquatic plant species. This report summarizes results of the surveys and provides recommendations for management of IAPS within the Medford District. Observations of any invasive aquatic animal species such as New Zealand mudsnails (Potamopyrgus antipodarum) are also reported. Title: Aquatic Plant Surveys in the Bureau of Land Management, Medford District, 2010-2011 Author: Sytsma, Mark D., Miller, Rich, Morgan, Vanessa Year: 2011 The introduction of invasive aquatic plant species (IAPS) can cause significant ecological and economic harm. IAPS can displace native aquatic plant species, impair recreation, and degrade water quality. Early detection of new invasions can improve chances for successful eradication or containment to reduce the risk of IAPS spread. The Oregon Department of Agriculture (ODA) lists the most egregious offenders as “Noxious Weeds” which are defined as plants classified by the Oregon State Weed Board that are injurious to public health, agriculture, recreation, wildlife, or any public or private property (ODA 2011). Several IAPS classified as noxious have been detected within the Medford District of the Bureau of Land Management (BLM) in Southern Oregon including yellow floating heart (Nymphoides peltata) and yellow flag iris (Iris pseudacorus). During the summers of 2010 and 2011, IAPS surveys were conducted at selected reservoirs, lakes, and river boat launches within the Medford District to determine the extent of IAPS infestations as well as the distributions of native aquatic plant species. This report summarizes results of the surveys and provides recommendations for management of IAPS within the Medford District. Observations of any invasive aquatic animal species such as New Zealand mudsnails (Potamopyrgus antipodarum) are also reported. Close

• 20. [Article] Sequencing and De Novo Transcriptome Assembly of Brachypodium sylvaticum (Poaceae)

  This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by the Botanical Society of America. The published article can be found at: http://www.bioone.org/...

  Citation × Citation Citation Abstract Copy Title: Sequencing and De Novo Transcriptome Assembly of Brachypodium sylvaticum (Poaceae) Author: Kimbrel, Jeffrey A., Marchini, Gina L., Fox, Samuel E., Youens-Clark, Ken, Preece, Justin, Sage, Abigail, Cruzan, Mitchell B., Jaiswal, Pankaj This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by the Botanical Society of America. The published article can be found at: http://www.bioone.org/loi/apps. Title: Sequencing and De Novo Transcriptome Assembly of Brachypodium sylvaticum (Poaceae) Author: Kimbrel, Jeffrey A., Marchini, Gina L., Fox, Samuel E., Youens-Clark, Ken, Preece, Justin, Sage, Abigail, Cruzan, Mitchell B., Jaiswal, Pankaj This is the publisher’s final pdf. The published article is copyrighted by the author(s) and published by the Botanical Society of America. The published article can be found at: http://www.bioone.org/loi/apps. Close