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• 1. [Article] The Effectiveness of Vertebrate Passage and Prevention Structures: A Study of Boeckman Road in Wilsonville

  One of the most obvious impacts roads have on the natural world is direct mortality to individual animals that attempt to cross roads. A less obvious but likely more important impact of roads on many species ...

  Citation × Citation Citation Abstract Copy Title: The Effectiveness of Vertebrate Passage and Prevention Structures: A Study of Boeckman Road in Wilsonville Author: de Rivera, Catherine E., Bliss-Ketchum, Leslie L. Year: 2010 One of the most obvious impacts roads have on the natural world is direct mortality to individual animals that attempt to cross roads. A less obvious but likely more important impact of roads on many species is habitat fragmentation. The ability for individuals to travel between subpopulations is the key to genetic diversity as well as ultimately the survival of the species. Considering these impacts and management goals to increase habitat connectivity, increased attention has been given to creating road design that reduces wildlife collisions. Most studies, however, have been in other countries or regions and most focus on connectivity for just one or a few species and rarely in urban settings. This study examines the effectiveness of a variety of under-road passage structures for a community of animals in an urban wetland. Wildlife passage was taken into great consideration in the construction of the Boeckman Road Extension, the new road (2006) in Wilsonville, Oregon, examined in this study. As a result it includes a bridge, two box culverts and eleven round concrete culverts to facilitate wildlife passage as well as a mammal fence atop an amphibian/reptile wall. In order to monitor passage use we used a combination of sand-track monitoring and motion-detect cameras. We compared passage structure use to movement in the habitats surrounding the road by monitoring four habitat transects in addition to the passage structures (Road transect). We also conducted tag and release studies targeted to small mammals. Finally, camera data collected in passage structures were compared to camera monitoring at the end of the exclusionary fencing. A total of 26 species were detected in this study, 73% (19) of which were found to be using passage structures. 15% (4) of the identified species were detected on transects but not in passages and 11.5% (3) were detected in locations other than transects or passage structures. The bridge structure provided passage to the highest number of species (16), followed by the 24” and 18” culverts, which had a combined total of 11 species, and lastly the 9x4 culverts, which were flooded, with 2 species detected. Our results indicate that large and medium mammals overall did not use passages less than would be expected based on their local movement in habitats. In pit and Sherman traps sixteen of the 48 small mammals that were captured and tagged were re-caught, but only four of these moved from one transect to another, with two moving away from the road and the other two moving toward and under the road. Of the species detected with cameras at the passage structures and circumventing fencing, excluding small mammals, reptiles and amphibians (139), 19% (33) were found potentially crossing on the road surface. The proportion of deer detected using over-road crossings (23%) is of particular concern for driver safety. The bridge structure provided the greatest passage, in not only frequency of crossings but also species present. When maintenance factors, driver safety and species of greatest concern are included, the higher cost of the bridge structure would likely be even further balanced by the benefits. This study highlights the effectiveness and potential problems (and possible fixes) of some of the passage and prevention structures. Including passage and prevention structures such as these in road design is imperative for habitat connectivity and the need for this becomes even more apparent as Oregon’s native wildlife face an ever increasing urban landscape as well as the potential impacts of climate change. Title: The Effectiveness of Vertebrate Passage and Prevention Structures: A Study of Boeckman Road in Wilsonville Author: de Rivera, Catherine E., Bliss-Ketchum, Leslie L. Year: 2010 One of the most obvious impacts roads have on the natural world is direct mortality to individual animals that attempt to cross roads. A less obvious but likely more important impact of roads on many species is habitat fragmentation. The ability for individuals to travel between subpopulations is the key to genetic diversity as well as ultimately the survival of the species. Considering these impacts and management goals to increase habitat connectivity, increased attention has been given to creating road design that reduces wildlife collisions. Most studies, however, have been in other countries or regions and most focus on connectivity for just one or a few species and rarely in urban settings. This study examines the effectiveness of a variety of under-road passage structures for a community of animals in an urban wetland. Wildlife passage was taken into great consideration in the construction of the Boeckman Road Extension, the new road (2006) in Wilsonville, Oregon, examined in this study. As a result it includes a bridge, two box culverts and eleven round concrete culverts to facilitate wildlife passage as well as a mammal fence atop an amphibian/reptile wall. In order to monitor passage use we used a combination of sand-track monitoring and motion-detect cameras. We compared passage structure use to movement in the habitats surrounding the road by monitoring four habitat transects in addition to the passage structures (Road transect). We also conducted tag and release studies targeted to small mammals. Finally, camera data collected in passage structures were compared to camera monitoring at the end of the exclusionary fencing. A total of 26 species were detected in this study, 73% (19) of which were found to be using passage structures. 15% (4) of the identified species were detected on transects but not in passages and 11.5% (3) were detected in locations other than transects or passage structures. The bridge structure provided passage to the highest number of species (16), followed by the 24” and 18” culverts, which had a combined total of 11 species, and lastly the 9x4 culverts, which were flooded, with 2 species detected. Our results indicate that large and medium mammals overall did not use passages less than would be expected based on their local movement in habitats. In pit and Sherman traps sixteen of the 48 small mammals that were captured and tagged were re-caught, but only four of these moved from one transect to another, with two moving away from the road and the other two moving toward and under the road. Of the species detected with cameras at the passage structures and circumventing fencing, excluding small mammals, reptiles and amphibians (139), 19% (33) were found potentially crossing on the road surface. The proportion of deer detected using over-road crossings (23%) is of particular concern for driver safety. The bridge structure provided the greatest passage, in not only frequency of crossings but also species present. When maintenance factors, driver safety and species of greatest concern are included, the higher cost of the bridge structure would likely be even further balanced by the benefits. This study highlights the effectiveness and potential problems (and possible fixes) of some of the passage and prevention structures. Including passage and prevention structures such as these in road design is imperative for habitat connectivity and the need for this becomes even more apparent as Oregon’s native wildlife face an ever increasing urban landscape as well as the potential impacts of climate change. Close

• 2. [Article] Invasive Species Management Plan for Oswego Lake

  This Invasive Species Management Plan defines an overarching strategy for the Lake Oswego Corporation (LOC) to mitigate threats from invasive species to Oswego Lake. Invasive species pose a direct risk ...

  Citation × Citation Citation Abstract Copy Title: Invasive Species Management Plan for Oswego Lake Author: Warren, Daniel Year: 2009 This Invasive Species Management Plan defines an overarching strategy for the Lake Oswego Corporation (LOC) to mitigate threats from invasive species to Oswego Lake. Invasive species pose a direct risk to recreational and aesthetic uses of the lake, critical LOC infrastructure, and ecological communities within the lake. The Plan is particularly concerned with two bivalve mollusks in the genus Dreissena: the zebra mussel (Dreissena polymorpha) and the quagga mussel (Dreissena bugensis). These mussels grow in dense colonies that damage watercraft and underwater structures as well as displace native species. A recent scientific report found that an intense infestation of mussels in Oswego Lake is unlikely due to the water chemistry, but a low to moderate level of infestation is possible. Any level of infestation could be very serious and warrants proactive preventative measures and response plans should an invasion occur. In addition to the harmful mussels, this Plan identifies preventative and response measures for other species such as hydrilla (Hydrilla verticillata) that have the potential to harm Oswego Lake. Strategies outlined in this Plan are as follows: • Identification and prioritization of likely potential invasive species • Identification of vectors of establishment •Prevention strategies • Development of monitoring plans • Rapid response action plans and control measures if an invasion is detected Prevention is the top management priority for all invasive species as the cost and difficulty of controlling or eradicating an invasion increase significantly as an invasion spreads. This includes active measures to exclude species as well as the ongoing education and involvement of community members. Effective monitoring and rapid response action plans are the next priority to detect and eradicate an exotic species before it establishes and spreads. The integration of these strategies will help the LOC prevent significant deleterious effects from invasive species in Oswego Lake so that the basic operations of the LOC are facilitated and recreational and aesthetic opportunities are preserved. Title: Invasive Species Management Plan for Oswego Lake Author: Warren, Daniel Year: 2009 This Invasive Species Management Plan defines an overarching strategy for the Lake Oswego Corporation (LOC) to mitigate threats from invasive species to Oswego Lake. Invasive species pose a direct risk to recreational and aesthetic uses of the lake, critical LOC infrastructure, and ecological communities within the lake. The Plan is particularly concerned with two bivalve mollusks in the genus Dreissena: the zebra mussel (Dreissena polymorpha) and the quagga mussel (Dreissena bugensis). These mussels grow in dense colonies that damage watercraft and underwater structures as well as displace native species. A recent scientific report found that an intense infestation of mussels in Oswego Lake is unlikely due to the water chemistry, but a low to moderate level of infestation is possible. Any level of infestation could be very serious and warrants proactive preventative measures and response plans should an invasion occur. In addition to the harmful mussels, this Plan identifies preventative and response measures for other species such as hydrilla (Hydrilla verticillata) that have the potential to harm Oswego Lake. Strategies outlined in this Plan are as follows: • Identification and prioritization of likely potential invasive species • Identification of vectors of establishment •Prevention strategies • Development of monitoring plans • Rapid response action plans and control measures if an invasion is detected Prevention is the top management priority for all invasive species as the cost and difficulty of controlling or eradicating an invasion increase significantly as an invasion spreads. This includes active measures to exclude species as well as the ongoing education and involvement of community members. Effective monitoring and rapid response action plans are the next priority to detect and eradicate an exotic species before it establishes and spreads. The integration of these strategies will help the LOC prevent significant deleterious effects from invasive species in Oswego Lake so that the basic operations of the LOC are facilitated and recreational and aesthetic opportunities are preserved. Close

• 3. [Article] Water Quality Assessment of Benthic Diatom Communities for Water Quality in the Subalpine Karstic Lakes of Jiuzhaigou, A World Heritage Site in China

  Jiuzhaigou, characterized by its magnificent waterscapes and subalpine karstic features, is both a World Heritage Site and a World Biosphere Reserve in southwestern China. In recent years, this unique ...

  Citation × Citation Citation Abstract Copy Title: Water Quality Assessment of Benthic Diatom Communities for Water Quality in the Subalpine Karstic Lakes of Jiuzhaigou, A World Heritage Site in China Author: Ouyang, Li-li, Pan, Yangdong, Huang, Cheng-min, Tang, Ya, Du, Jie, Xiao, Wei-yang Year: 2016 Jiuzhaigou, characterized by its magnificent waterscapes and subalpine karstic features, is both a World Heritage Site and a World Biosphere Reserve in southwestern China. In recent years, this unique ecosystem has shown signs of stress due to increasing tourism activities within the reserve. The various routine methods, which monitor physical and chemical properties, do not fully reflect water quality in the subalpine and alpine lakes, while the indicators using aquatic organisms to evaluate the water quality or status of the subalpine lakes are poorly reported. Title: Water Quality Assessment of Benthic Diatom Communities for Water Quality in the Subalpine Karstic Lakes of Jiuzhaigou, A World Heritage Site in China Author: Ouyang, Li-li, Pan, Yangdong, Huang, Cheng-min, Tang, Ya, Du, Jie, Xiao, Wei-yang Year: 2016 Jiuzhaigou, characterized by its magnificent waterscapes and subalpine karstic features, is both a World Heritage Site and a World Biosphere Reserve in southwestern China. In recent years, this unique ecosystem has shown signs of stress due to increasing tourism activities within the reserve. The various routine methods, which monitor physical and chemical properties, do not fully reflect water quality in the subalpine and alpine lakes, while the indicators using aquatic organisms to evaluate the water quality or status of the subalpine lakes are poorly reported. Close

• 4. [Article] Green Crab Control: A Removal Effort in a Shallow Central California Estuary

  Goal: To test the feasibility and effects of locally removing a well-established population of a marine organism with pelagic larvae. Removal of adult European green crabs (Carcinus maenas) from Bodega ...

  Citation × Citation Citation Abstract Copy Title: Green Crab Control: A Removal Effort in a Shallow Central California Estuary Author: Larson, Amy A., de Rivera, C. E., Ruiz, G. M., Grosholz, E. D., Sytsma, Mark D. Year: 2008 Goal: To test the feasibility and effects of locally removing a well-established population of a marine organism with pelagic larvae. Removal of adult European green crabs (Carcinus maenas) from Bodega Harbor as a model system to develop and inform management options for eradication, rapid response, and control of marine invaders. Title: Green Crab Control: A Removal Effort in a Shallow Central California Estuary Author: Larson, Amy A., de Rivera, C. E., Ruiz, G. M., Grosholz, E. D., Sytsma, Mark D. Year: 2008 Goal: To test the feasibility and effects of locally removing a well-established population of a marine organism with pelagic larvae. Removal of adult European green crabs (Carcinus maenas) from Bodega Harbor as a model system to develop and inform management options for eradication, rapid response, and control of marine invaders. Close

• 5. [Article] Mutual Benefits of Teacher/Scientist Partnerships

  University ecologists, science educators and natural resource agency scientists have been working with science teachers in a partnership called "Teachers in the Woods". Teachers work with field scientists ...

  Citation × Citation Citation Abstract Copy Title: Mutual Benefits of Teacher/Scientist Partnerships Author: Dresner, Marion, Starvel, Erin Year: 2004 University ecologists, science educators and natural resource agency scientists have been working with science teachers in a partnership called "Teachers in the Woods". Teachers work with field scientists to implement a variety of ecological research and monitoring projects on federal agency land. Scientists and teachers were interviewed to obtain insights into the benefits of this partnership. These partnerships generated greater teacher knowledge of local ecological communities and processes and fostered a mutual respect for the work of both classroom teachers and scientists. Title: Mutual Benefits of Teacher/Scientist Partnerships Author: Dresner, Marion, Starvel, Erin Year: 2004 University ecologists, science educators and natural resource agency scientists have been working with science teachers in a partnership called "Teachers in the Woods". Teachers work with field scientists to implement a variety of ecological research and monitoring projects on federal agency land. Scientists and teachers were interviewed to obtain insights into the benefits of this partnership. These partnerships generated greater teacher knowledge of local ecological communities and processes and fostered a mutual respect for the work of both classroom teachers and scientists. Close

• 6. [Article] How Will Climate Change and Bioenergy Harvest Affect Carbon Storage in the Oregon Coast Range

  This poster shows how the researchers used a simulation model to explore the impacts of varying scenarios of climate change and forest management on the ecosystem carbon.

  Citation × Citation Citation Abstract Copy Title: How Will Climate Change and Bioenergy Harvest Affect Carbon Storage in the Oregon Coast Range Author: Creutzburg, Megan K., Scheller, Robert M., Lucash, Melissa S., LeDuc, Stephen D., Evers, Louisa B., Johnson, Mark G. Year: 2014 This poster shows how the researchers used a simulation model to explore the impacts of varying scenarios of climate change and forest management on the ecosystem carbon. Title: How Will Climate Change and Bioenergy Harvest Affect Carbon Storage in the Oregon Coast Range Author: Creutzburg, Megan K., Scheller, Robert M., Lucash, Melissa S., LeDuc, Stephen D., Evers, Louisa B., Johnson, Mark G. Year: 2014 This poster shows how the researchers used a simulation model to explore the impacts of varying scenarios of climate change and forest management on the ecosystem carbon. Close

• 7. [Article] The Biological Sediment Tolerance Index: Assessing fine sediments conditions in Oregon streams using macroinvertebrates

  Fine sediments in excess of natural background conditions are one of most globally common causes of stream degradation, with well documented impacts on aquatic communities. The lack of agreement on methods ...

  Citation × Citation Citation Abstract Copy Title: The Biological Sediment Tolerance Index: Assessing fine sediments conditions in Oregon streams using macroinvertebrates Author: Hubler, Shannon, Huff, David, Edwards, Patrick, Pan, Yangdong Year: 2016 Fine sediments in excess of natural background conditions are one of most globally common causes of stream degradation, with well documented impacts on aquatic communities. The lack of agreement on methods for monitoring fine sediments makes it difficult to share data, limiting assessments of stream conditions across jurisdictions. We present a model that circumvents these limitations by inferring fine sediments in Oregon streams through sampling of macroinvertebrates. Tolerances to fine sediments ( Title: The Biological Sediment Tolerance Index: Assessing fine sediments conditions in Oregon streams using macroinvertebrates Author: Hubler, Shannon, Huff, David, Edwards, Patrick, Pan, Yangdong Year: 2016 Fine sediments in excess of natural background conditions are one of most globally common causes of stream degradation, with well documented impacts on aquatic communities. The lack of agreement on methods for monitoring fine sediments makes it difficult to share data, limiting assessments of stream conditions across jurisdictions. We present a model that circumvents these limitations by inferring fine sediments in Oregon streams through sampling of macroinvertebrates. Tolerances to fine sediments ( Close

• 8. [Article] Local and Traditional Knowledge and the Historical Ecology of Pacific Herring in Alaska

  The article focuses on the historical ecology of the Pacific herring, a marine food web resource, in the Gulf of Alaska. It states the hearing conducted by the Alaska Legislature's House special committee ...

  Citation × Citation Citation Abstract Copy Title: Local and Traditional Knowledge and the Historical Ecology of Pacific Herring in Alaska Author: Thornton, Thomas F., Moss, Madonna L., Butler, Virginia L., Hebert, Jamie, Funk, Fritz Year: 2010 The article focuses on the historical ecology of the Pacific herring, a marine food web resource, in the Gulf of Alaska. It states the hearing conducted by the Alaska Legislature's House special committee on fisheries on the status and management of herring in Southeast Alaska during which Tlingit fisherman Clarence Jackson of Kake notes the disappearance of herring in his lifetime. Information on herring ecology based from Native and non-Native individuals from Southeast communities and archaeological site reports reveal that non-Natives in Southeast Alaska have exploited herring with the development of a herring reduction plant. It underscores the need for conservative management of herring populations, monitoring of herring spawning areas, and conducting otolith and ancient DNA studies. Title: Local and Traditional Knowledge and the Historical Ecology of Pacific Herring in Alaska Author: Thornton, Thomas F., Moss, Madonna L., Butler, Virginia L., Hebert, Jamie, Funk, Fritz Year: 2010 The article focuses on the historical ecology of the Pacific herring, a marine food web resource, in the Gulf of Alaska. It states the hearing conducted by the Alaska Legislature's House special committee on fisheries on the status and management of herring in Southeast Alaska during which Tlingit fisherman Clarence Jackson of Kake notes the disappearance of herring in his lifetime. Information on herring ecology based from Native and non-Native individuals from Southeast communities and archaeological site reports reveal that non-Natives in Southeast Alaska have exploited herring with the development of a herring reduction plant. It underscores the need for conservative management of herring populations, monitoring of herring spawning areas, and conducting otolith and ancient DNA studies. Close

• 9. [Article] Rare Plant Associations, Oregon Dunes National Recreation Area, Sutton Recreation Area, and Heceta Sand Dunes ACEC/ONA

  Nine of the ten rare plant associations identified in the dunes in 1993 are recommended for continued inclusion in conservation planning. Large-patch associations are currently in good condition, but small-patch ...

  Citation × Citation Citation Abstract Copy Title: Rare Plant Associations, Oregon Dunes National Recreation Area, Sutton Recreation Area, and Heceta Sand Dunes ACEC/ONA Author: Christy, John A. Year: 2013 Nine of the ten rare plant associations identified in the dunes in 1993 are recommended for continued inclusion in conservation planning. Large-patch associations are currently in good condition, but small-patch associations are being infilled by a combination of plant succession and invasive species. Repeat photography using aerial and ground-based imagery is recommended as a way to gauge the rate of change in dune communities. Prescribed fire is recommended to monitor rejuvenation effects on two shore pine woodland associations that are most at risk of infilling. Vegetation mapping based on remote sensing will enable more accurate assessment of vegetation features, and facilitate modeling of management scenarios and effects of seal level rise, earthquakes, and tsunamis. Title: Rare Plant Associations, Oregon Dunes National Recreation Area, Sutton Recreation Area, and Heceta Sand Dunes ACEC/ONA Author: Christy, John A. Year: 2013 Nine of the ten rare plant associations identified in the dunes in 1993 are recommended for continued inclusion in conservation planning. Large-patch associations are currently in good condition, but small-patch associations are being infilled by a combination of plant succession and invasive species. Repeat photography using aerial and ground-based imagery is recommended as a way to gauge the rate of change in dune communities. Prescribed fire is recommended to monitor rejuvenation effects on two shore pine woodland associations that are most at risk of infilling. Vegetation mapping based on remote sensing will enable more accurate assessment of vegetation features, and facilitate modeling of management scenarios and effects of seal level rise, earthquakes, and tsunamis. Close

• 10. [Article] Green Crab Management: Reduction of a Marine Invasive Population

  The overall goal of this study is to develop and demonstrate the capacity for local eradication of adult Carcinus maenas, European green crabs. This represents a conceptual shift in development of management ...

  Citation × Citation Citation Abstract Copy Title: Green Crab Management: Reduction of a Marine Invasive Population Author: de Rivera, Catherine E., Grosholz, Edwin D., Ruiz, Greg, Larson, Amy A., Kordas, Rebecca L., Sytsma, Mark Year: 2007 The overall goal of this study is to develop and demonstrate the capacity for local eradication of adult Carcinus maenas, European green crabs. This represents a conceptual shift in development of management options to address established invasions in marine systems, extending and exploring the application of terrestrial successes in this area. Specifically, this project tests the effects of removing green crabs from Bodega Harbor on the green crab population and on native shore crabs eaten by green crabs. Title: Green Crab Management: Reduction of a Marine Invasive Population Author: de Rivera, Catherine E., Grosholz, Edwin D., Ruiz, Greg, Larson, Amy A., Kordas, Rebecca L., Sytsma, Mark Year: 2007 The overall goal of this study is to develop and demonstrate the capacity for local eradication of adult Carcinus maenas, European green crabs. This represents a conceptual shift in development of management options to address established invasions in marine systems, extending and exploring the application of terrestrial successes in this area. Specifically, this project tests the effects of removing green crabs from Bodega Harbor on the green crab population and on native shore crabs eaten by green crabs. Close