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• 1. [Article] Spatial Patterns of Sediment Transport in the Upper Willamette River, Oregon

  The Willamette is a gravel-bed river that drains ~28,800 square kilometers between the Coast Range and Cascade Range in northwestern Oregon before entering the Columbia River near Portland. In the last ...

  Citation × Citation Citation Abstract Copy Title: Spatial Patterns of Sediment Transport in the Upper Willamette River, Oregon Author: Langston, Trevor Year: 2015 The Willamette is a gravel-bed river that drains ~28,800 square kilometers between the Coast Range and Cascade Range in northwestern Oregon before entering the Columbia River near Portland. In the last 150 years, natural and anthropogenic drivers have altered the sediment transport regime, drastically reducing the geomorphic complexity of the river. The purpose of this research is to assess longitudinal trends in sediment transport within the modern flow regime. Sediment transport rates are highly discrete in space, exhibit similar longitudinal patters across flows and increase non-linearly with flow. The highest sediment transport rates are found where the channel is confined due to disconnection of the floodplain and the river runs against high resistance terraces. The spatial distributions of sediment transport rates and active gravel are tightly linked. Sediment sampling revealed slight downstream fining in the surface grain size. Sediment size did not correlate with stream power. Title: Spatial Patterns of Sediment Transport in the Upper Willamette River, Oregon Author: Langston, Trevor Year: 2015 The Willamette is a gravel-bed river that drains ~28,800 square kilometers between the Coast Range and Cascade Range in northwestern Oregon before entering the Columbia River near Portland. In the last 150 years, natural and anthropogenic drivers have altered the sediment transport regime, drastically reducing the geomorphic complexity of the river. The purpose of this research is to assess longitudinal trends in sediment transport within the modern flow regime. Sediment transport rates are highly discrete in space, exhibit similar longitudinal patters across flows and increase non-linearly with flow. The highest sediment transport rates are found where the channel is confined due to disconnection of the floodplain and the river runs against high resistance terraces. The spatial distributions of sediment transport rates and active gravel are tightly linked. Sediment sampling revealed slight downstream fining in the surface grain size. Sediment size did not correlate with stream power. Close

• 2. [Article] THE OLIGOCENE MARINE MOLLUSCAN FAUNA OF THE EUGENE FORMATION IN OREGON

  124 pages

  Citation × Citation Citation Abstract Copy Title: THE OLIGOCENE MARINE MOLLUSCAN FAUNA OF THE EUGENE FORMATION IN OREGON Author: STENTZ HICKMAN, CAROLE JEAN Year: 2016, 1969 124 pages Title: THE OLIGOCENE MARINE MOLLUSCAN FAUNA OF THE EUGENE FORMATION IN OREGON Author: STENTZ HICKMAN, CAROLE JEAN Year: 2016, 1969 124 pages Close

• 3. [Article] THE ARCHAEOLOGY OF A LATE PREHISTORIC VILLAGE IN NORTHWESTERN CALIFORNIA

  52 pages

  Citation × Citation Citation Abstract Copy Title: THE ARCHAEOLOGY OF A LATE PREHISTORIC VILLAGE IN NORTHWESTERN CALIFORNIA Author: Leonhardy, Frank Year: 2016, 1967 52 pages Title: THE ARCHAEOLOGY OF A LATE PREHISTORIC VILLAGE IN NORTHWESTERN CALIFORNIA Author: Leonhardy, Frank Year: 2016, 1967 52 pages Close

• 4. [Article] Reproductive Patterns of Cold-Seep Mussels in the Gulf of Mexico and Northwestern Atlantic

  Continuous or semi-continuous reproduction is the norm in deep-sea animals, with exceptions explained by seasonal pulses of surface-derived phytodetritus. Chemosynthesis-based ecosystems such as cold seeps ...

  Citation × Citation Citation Abstract Copy Title: Reproductive Patterns of Cold-Seep Mussels in the Gulf of Mexico and Northwestern Atlantic Author: Plowman, Caitlin Year: 2017 Continuous or semi-continuous reproduction is the norm in deep-sea animals, with exceptions explained by seasonal pulses of surface-derived phytodetritus. Chemosynthesis-based ecosystems such as cold seeps have an independent nutritional supply and are often thought of as decoupled from surface productivity. This thesis explores reproductive patterns of four bathymodiolin mussel species from 14 cold seeps (320 to 3300 m depth) in the Gulf of Mexico (2014) and the northwestern Atlantic (2015). Using paraffin histology, I determined maturity stages for male and oocyte sizes for female mussels. All species at all sites reproduced periodically and synchronously, with geographic synchrony among sites. This suggests that mussels rely on a site-independent cue such as seasonal phytodetrital flux to synchronize reproduction, providing evidence for a stronger coupling between surface productivity and chemosynthesis-based fauna than previously expected. Mature oocytes were of similar size for all species at all depths, suggesting that egg size is phylogenetically constrained. Title: Reproductive Patterns of Cold-Seep Mussels in the Gulf of Mexico and Northwestern Atlantic Author: Plowman, Caitlin Year: 2017 Continuous or semi-continuous reproduction is the norm in deep-sea animals, with exceptions explained by seasonal pulses of surface-derived phytodetritus. Chemosynthesis-based ecosystems such as cold seeps have an independent nutritional supply and are often thought of as decoupled from surface productivity. This thesis explores reproductive patterns of four bathymodiolin mussel species from 14 cold seeps (320 to 3300 m depth) in the Gulf of Mexico (2014) and the northwestern Atlantic (2015). Using paraffin histology, I determined maturity stages for male and oocyte sizes for female mussels. All species at all sites reproduced periodically and synchronously, with geographic synchrony among sites. This suggests that mussels rely on a site-independent cue such as seasonal phytodetrital flux to synchronize reproduction, providing evidence for a stronger coupling between surface productivity and chemosynthesis-based fauna than previously expected. Mature oocytes were of similar size for all species at all depths, suggesting that egg size is phylogenetically constrained. Close

• 5. [Article] Identifying Branding Techniques of PNW Art Musuems

  108 pages

  Citation × Citation Citation Abstract Copy Title: Identifying Branding Techniques of PNW Art Musuems Author: McCarthy, Stephanie Year: 2015 108 pages Title: Identifying Branding Techniques of PNW Art Musuems Author: McCarthy, Stephanie Year: 2015 108 pages Close

• 6. [Article] Potential Impacts of Climate Change on Hood Canal Hypoxia

  31 pages

  Citation × Citation Citation Abstract Copy Title: Potential Impacts of Climate Change on Hood Canal Hypoxia Author: Schandl, Maria Year: 2017, 2015 31 pages Title: Potential Impacts of Climate Change on Hood Canal Hypoxia Author: Schandl, Maria Year: 2017, 2015 31 pages Close