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• 71. [Article] Necanicum Habitat Assessment Project: Juvenile Coho Winter Habitat Priorities for Large Wood Placement and Fish Passage Barriers

  Abstract -- ODFW Aquatic Inventory protocol was used to assess habitat in selected streams (57 km total) in the Necanicum River basin. Snorkel surveys were conducted to assess juvenile salmonid distribution ...

  Citation × Citation Citation Abstract Copy Title: Necanicum Habitat Assessment Project: Juvenile Coho Winter Habitat Priorities for Large Wood Placement and Fish Passage Barriers Abstract -- ODFW Aquatic Inventory protocol was used to assess habitat in selected streams (57 km total) in the Necanicum River basin. Snorkel surveys were conducted to assess juvenile salmonid distribution and abundance in these streams. Non-natural fish passage barriers were located. Locations where large wood placements would enhance fish habitat were identified. Title: Necanicum Habitat Assessment Project: Juvenile Coho Winter Habitat Priorities for Large Wood Placement and Fish Passage Barriers Abstract -- ODFW Aquatic Inventory protocol was used to assess habitat in selected streams (57 km total) in the Necanicum River basin. Snorkel surveys were conducted to assess juvenile salmonid distribution and abundance in these streams. Non-natural fish passage barriers were located. Locations where large wood placements would enhance fish habitat were identified. Close

• 72. [Article] Annual trends in abundance and frequency for juvenile coho in the Oregon Coast Coho ESU

  Abstract -- PDF Document with reference to North, Mid and Mid-South and Umpqua coastal streams. Snorkel years from 1998 to 2006 and shows information of the annual trend in abundance and frequency metrics ...

  Citation × Citation Citation Abstract Copy Title: Annual trends in abundance and frequency for juvenile coho in the Oregon Coast Coho ESU Abstract -- PDF Document with reference to North, Mid and Mid-South and Umpqua coastal streams. Snorkel years from 1998 to 2006 and shows information of the annual trend in abundance and frequency metrics for juvenile coho salmon in the Oregon Coast Coho ESU, based on snorkel surveys in 1st-3rd order stream reaches. Title: Annual trends in abundance and frequency for juvenile coho in the Oregon Coast Coho ESU Abstract -- PDF Document with reference to North, Mid and Mid-South and Umpqua coastal streams. Snorkel years from 1998 to 2006 and shows information of the annual trend in abundance and frequency metrics for juvenile coho salmon in the Oregon Coast Coho ESU, based on snorkel surveys in 1st-3rd order stream reaches. Close

• 73. [Article] Annual trends in abundance and frequency metrics for juvenile steelhead in the Oregon Coast Steelhead DPS

  Abstract -- PDF Document with reference to North, Mid and Mid-South and Umpqua coastal streams. Snorkel years from 2002 to 2006 and shows information from the annual trend in abundance and frequency metrics ...

  Citation × Citation Citation Abstract Copy Title: Annual trends in abundance and frequency metrics for juvenile steelhead in the Oregon Coast Steelhead DPS Abstract -- PDF Document with reference to North, Mid and Mid-South and Umpqua coastal streams. Snorkel years from 2002 to 2006 and shows information from the annual trend in abundance and frequency metrics for juvenile steelhead in the Oregon Coast Steelhead DPS, based on snorkel surveys in 1st-3rd order stream reaches. Title: Annual trends in abundance and frequency metrics for juvenile steelhead in the Oregon Coast Steelhead DPS Abstract -- PDF Document with reference to North, Mid and Mid-South and Umpqua coastal streams. Snorkel years from 2002 to 2006 and shows information from the annual trend in abundance and frequency metrics for juvenile steelhead in the Oregon Coast Steelhead DPS, based on snorkel surveys in 1st-3rd order stream reaches. Close

• 74. [Article] Status of Winter Rearing Habitat In Four Coho Population Units, 2007 Report Number: OPSW-ODFW-2008-7

  Abstract -- In a recent assessment of coastal coho salmon by the Oregon Department of Fish and Wildlife (2005), the authors concluded that productivity in 21 of 21 coastal coho populations was limited ...

  Citation × Citation Citation Abstract Copy Title: Status of Winter Rearing Habitat In Four Coho Population Units, 2007 Report Number: OPSW-ODFW-2008-7 Abstract -- In a recent assessment of coastal coho salmon by the Oregon Department of Fish and Wildlife (2005), the authors concluded that productivity in 21 of 21 coastal coho populations was limited primarily (13) or secondarily (8) by the complexity of stream habitat used by juvenile coho during their first winter of freshwater residence. The Oregon Coast Coho Conservation Plan (Nicholas 2006), written in response to the assessment, concluded that recovery of coho populations will depend largely on improvement of freshwater habitat. The Conservation Plan (Nicholas 2006) presents population specific goals for the amount and quality of winter habitat needed to achieve desired status of coho populations. Monitoring objectives in the Plan are 1) describe the status of freshwater habitat in each population unit with a focus on features important to overwinter survival of juvenile coho, 2) estimate carrying capacity in each population unit with + 30% confidence, and 3) measure progress towards meeting the habitat goals of the Conservation Plan. This report describes the first two monitoring objectives for winter habitat in four population units: the Coquille, South Umpqua, Siuslaw, and Nehalem. Winter habitat surveys are conducted to describe the freshwater habitat conditions that may limit the survival of juvenile coho during the season at which the conditions are limiting. The Habitat Limiting Factors Model (Nickelson et al. 1992a, Nickelson et al. 1992b, Nickelson 1998) estimates the capacity of streams to support juvenile salmon based on quantitative descriptions of summer and winter habitat. The model assigns value to the size, type and complexity of habitat units, giving highest value to slow water pools such as alcoves and beaver ponds, and pools with large wood. Because winter habitat limits the capacity of most coastal streams to support juvenile coho (Rodgers et al. 2005), accurate estimates of winter habitat are essential to life cycle modeling and to meet objectives of the Conservation Plan. Rodgers et al. (2005) estimated potential carrying capacity of stream habitat within each coastal coho population unit, but statistical confidence was limited by the source and manipulation of the data. Although the data set was extensive, most of the reaches were not randomly selected, and a regression model was used to extrapolate conditions from summer to winter (Rodgers et al. 2005). Summer surveys provide applicable information, but at low flow conditions. Summer weather and stream flows are predictable and conducive to field work; study sites are more accessible, work days are longer and warmer, lower water levels enable walking in the channel more easily, and water clarity is high. However, while more difficult logistically, winter surveys provide estimates during high flow conditions thought to be most important to juvenile coho survival. The winter surveys are conducted during “base flow” when off-channel habitats and secondary channels are inundated, but not over floodplain. The winter 2007 survey sites were selected using the Generalized Random Tessellation Stratified (GRTS) sample design (Stevens 2002) from a pool of sites previously surveyed during summer. This provided an opportunity to describe status within coho population units and refine the summer to winter conversion regression model. More sites are visited during summer than winter, and the sample pool will expand if we can use summer surveys to predict winter conditions. A thorough description of seasonal habitat variation will determine the appropriateness of using summer habitat data to assess habitat conditions during the winter. The objectives of this report are to provide the status of winter habitat surveyed in 2007 in four Oregon coastal coho salmon (Oncorhynchus kisutch) population units (Nehalem, Siuslaw, Coquille, South Umpqua), estimate the potential winter capacity of streams within those population units, and describe the differences observed in stream habitat between winter and summer with emphasis on slow water and secondary channel habitats. We also performed a sensitivity analysis to determine the number of survey sites necessary to represent each population unit within the desired confidence recommended in the Conservation Plan (Nicholas 2006). Title: Status of Winter Rearing Habitat In Four Coho Population Units, 2007 Report Number: OPSW-ODFW-2008-7 Abstract -- In a recent assessment of coastal coho salmon by the Oregon Department of Fish and Wildlife (2005), the authors concluded that productivity in 21 of 21 coastal coho populations was limited primarily (13) or secondarily (8) by the complexity of stream habitat used by juvenile coho during their first winter of freshwater residence. The Oregon Coast Coho Conservation Plan (Nicholas 2006), written in response to the assessment, concluded that recovery of coho populations will depend largely on improvement of freshwater habitat. The Conservation Plan (Nicholas 2006) presents population specific goals for the amount and quality of winter habitat needed to achieve desired status of coho populations. Monitoring objectives in the Plan are 1) describe the status of freshwater habitat in each population unit with a focus on features important to overwinter survival of juvenile coho, 2) estimate carrying capacity in each population unit with + 30% confidence, and 3) measure progress towards meeting the habitat goals of the Conservation Plan. This report describes the first two monitoring objectives for winter habitat in four population units: the Coquille, South Umpqua, Siuslaw, and Nehalem. Winter habitat surveys are conducted to describe the freshwater habitat conditions that may limit the survival of juvenile coho during the season at which the conditions are limiting. The Habitat Limiting Factors Model (Nickelson et al. 1992a, Nickelson et al. 1992b, Nickelson 1998) estimates the capacity of streams to support juvenile salmon based on quantitative descriptions of summer and winter habitat. The model assigns value to the size, type and complexity of habitat units, giving highest value to slow water pools such as alcoves and beaver ponds, and pools with large wood. Because winter habitat limits the capacity of most coastal streams to support juvenile coho (Rodgers et al. 2005), accurate estimates of winter habitat are essential to life cycle modeling and to meet objectives of the Conservation Plan. Rodgers et al. (2005) estimated potential carrying capacity of stream habitat within each coastal coho population unit, but statistical confidence was limited by the source and manipulation of the data. Although the data set was extensive, most of the reaches were not randomly selected, and a regression model was used to extrapolate conditions from summer to winter (Rodgers et al. 2005). Summer surveys provide applicable information, but at low flow conditions. Summer weather and stream flows are predictable and conducive to field work; study sites are more accessible, work days are longer and warmer, lower water levels enable walking in the channel more easily, and water clarity is high. However, while more difficult logistically, winter surveys provide estimates during high flow conditions thought to be most important to juvenile coho survival. The winter surveys are conducted during “base flow” when off-channel habitats and secondary channels are inundated, but not over floodplain. The winter 2007 survey sites were selected using the Generalized Random Tessellation Stratified (GRTS) sample design (Stevens 2002) from a pool of sites previously surveyed during summer. This provided an opportunity to describe status within coho population units and refine the summer to winter conversion regression model. More sites are visited during summer than winter, and the sample pool will expand if we can use summer surveys to predict winter conditions. A thorough description of seasonal habitat variation will determine the appropriateness of using summer habitat data to assess habitat conditions during the winter. The objectives of this report are to provide the status of winter habitat surveyed in 2007 in four Oregon coastal coho salmon (Oncorhynchus kisutch) population units (Nehalem, Siuslaw, Coquille, South Umpqua), estimate the potential winter capacity of streams within those population units, and describe the differences observed in stream habitat between winter and summer with emphasis on slow water and secondary channel habitats. We also performed a sensitivity analysis to determine the number of survey sites necessary to represent each population unit within the desired confidence recommended in the Conservation Plan (Nicholas 2006). Close

• 75. [Article] MidCoast A - Rapid Bio-assessment 1998 Midcoast

  Abstract -- Snorkel surveys were conducted in five midcoast watersheds that included the Yachats, Alsea, Yaquina, Siletz, and Salmon Rivers. These surveys were commissioned by the Midcoast Watershed Council, ...

  Citation × Citation Citation Abstract Copy Title: MidCoast A - Rapid Bio-assessment 1998 Midcoast Abstract -- Snorkel surveys were conducted in five midcoast watersheds that included the Yachats, Alsea, Yaquina, Siletz, and Salmon Rivers. These surveys were commissioned by the Midcoast Watershed Council, using funds granted by GWEB. The intent of these surveys was to begin to develop a base line for monitoring trends in the distribution and abundance of juvenile Coho, Steelhead and Cutthroat in Midcoast watersheds. Adult Coho escapement for many of these basins has hovered near all time low levels for multiple brood cycles. These surveys intend to identify the core areas within these basins that, at low spawner densities, provide suitable spawning habitats. They also intend to identify areas important for juvenile salmonid rearing such that restoration activities can focus on recovering reaches that adult salmonids are returning to. Title: MidCoast A - Rapid Bio-assessment 1998 Midcoast Abstract -- Snorkel surveys were conducted in five midcoast watersheds that included the Yachats, Alsea, Yaquina, Siletz, and Salmon Rivers. These surveys were commissioned by the Midcoast Watershed Council, using funds granted by GWEB. The intent of these surveys was to begin to develop a base line for monitoring trends in the distribution and abundance of juvenile Coho, Steelhead and Cutthroat in Midcoast watersheds. Adult Coho escapement for many of these basins has hovered near all time low levels for multiple brood cycles. These surveys intend to identify the core areas within these basins that, at low spawner densities, provide suitable spawning habitats. They also intend to identify areas important for juvenile salmonid rearing such that restoration activities can focus on recovering reaches that adult salmonids are returning to. Close

• 76. [Article] 2004-2005 Hatchery Fish Carcass Placement in Oregon Streams

  Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement is commonly believed to replace some of the nutrients historically available to ...

  Citation × Citation Citation Abstract Copy Title: 2004-2005 Hatchery Fish Carcass Placement in Oregon Streams Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement is commonly believed to replace some of the nutrients historically available to fish from decaying carcasses no longer present in large numbers. Nutrients provided by these carcasses are cycled through the food chain and become available to salmonids primarily through insects, consumed by salmonids as food. Title: 2004-2005 Hatchery Fish Carcass Placement in Oregon Streams Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement is commonly believed to replace some of the nutrients historically available to fish from decaying carcasses no longer present in large numbers. Nutrients provided by these carcasses are cycled through the food chain and become available to salmonids primarily through insects, consumed by salmonids as food. Close

• 77. [Article] 2005-2006 Hatchery Fish Carcass Placement in Oregon Streams

  Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement replaces some of the nutrients historically available to fish from decaying carcasses ...

  Citation × Citation Citation Abstract Copy Title: 2005-2006 Hatchery Fish Carcass Placement in Oregon Streams Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement replaces some of the nutrients historically available to fish from decaying carcasses no longer present in large numbers. Nutrients provided by these carcasses are cycled through the food chain and become available to salmonids primarily through insects, consumed by salmonids as food. Information gathered from this analysis will help determine whether to continue, modify, or discontinue the carcass placement program. The monitoring and evaluation component of this project will investigate food web responses, along with other important factors Title: 2005-2006 Hatchery Fish Carcass Placement in Oregon Streams Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement replaces some of the nutrients historically available to fish from decaying carcasses no longer present in large numbers. Nutrients provided by these carcasses are cycled through the food chain and become available to salmonids primarily through insects, consumed by salmonids as food. Information gathered from this analysis will help determine whether to continue, modify, or discontinue the carcass placement program. The monitoring and evaluation component of this project will investigate food web responses, along with other important factors Close

• 78. [Article] 2006-2007 Hatchery Fish Carcass Placement in Oregon Streams

  Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement replaces some of the nutrients historically available to fish from decaying carcasses ...

  Citation × Citation Citation Abstract Copy Title: 2006-2007 Hatchery Fish Carcass Placement in Oregon Streams Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement replaces some of the nutrients historically available to fish from decaying carcasses no longer present in large numbers. Nutrients provided by these carcasses are cycled through the food chain and become available to salmonids primarily through insects, consumed by salmonids as food. Title: 2006-2007 Hatchery Fish Carcass Placement in Oregon Streams Abstract -- The purpose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement replaces some of the nutrients historically available to fish from decaying carcasses no longer present in large numbers. Nutrients provided by these carcasses are cycled through the food chain and become available to salmonids primarily through insects, consumed by salmonids as food. Close

• 79. [Article] 2008-2009 Hatchery Fish Carcass Placement in Oregon Streams

  Abstract -- The pupose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement is commonly believed to replace some of the nutrients historically available to ...

  Citation × Citation Citation Abstract Copy Title: 2008-2009 Hatchery Fish Carcass Placement in Oregon Streams Abstract -- The pupose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement is commonly believed to replace some of the nutrients historically available to fish from decaying carcasses no longer present in large numbers. Nutrients provided by these carcasses are cycled through the food chain and become available to salmonids primarily through insects consumed by salmonds as food. Title: 2008-2009 Hatchery Fish Carcass Placement in Oregon Streams Abstract -- The pupose of this document is to track the placement of salmon carcasses in streams. Fish carcass placement is commonly believed to replace some of the nutrients historically available to fish from decaying carcasses no longer present in large numbers. Nutrients provided by these carcasses are cycled through the food chain and become available to salmonids primarily through insects consumed by salmonds as food. Close

• 80. [Article] Summary Report: Bald Mountain Creek-Bear Creek (Elk River) Juvenile Snorkel Survey, August 2011

  Abstract -- A rapid bio-assessment juvenile snorkel survey of Bald Mtn occurred in Augutst 2011 on approximately 0.67 miles of stream, and pools were snorkeled on Bear Creek to determine presence/absence. ...

  Citation × Citation Citation Abstract Copy Title: Summary Report: Bald Mountain Creek-Bear Creek (Elk River) Juvenile Snorkel Survey, August 2011 Abstract -- A rapid bio-assessment juvenile snorkel survey of Bald Mtn occurred in Augutst 2011 on approximately 0.67 miles of stream, and pools were snorkeled on Bear Creek to determine presence/absence. Title: Summary Report: Bald Mountain Creek-Bear Creek (Elk River) Juvenile Snorkel Survey, August 2011 Abstract -- A rapid bio-assessment juvenile snorkel survey of Bald Mtn occurred in Augutst 2011 on approximately 0.67 miles of stream, and pools were snorkeled on Bear Creek to determine presence/absence. Close