Search

Search Results

• 11. [Article] LCMP - Residence Time and Seasonal Movements of Juvenile Coho Salmon in the Ecotone and Lower Estuary of Winchester Creek, South Slough, Oregon

  Abstract -- The juvenile life history of coho salmon Oncorhynchus kisutch in the stream-estuary ecotone of Winchester Creek, South Slough, Oregon, was investigated in 1999–2001. Seines and a rotary screw ...

  Citation × Citation Citation Abstract Copy Title: LCMP - Residence Time and Seasonal Movements of Juvenile Coho Salmon in the Ecotone and Lower Estuary of Winchester Creek, South Slough, Oregon Abstract -- The juvenile life history of coho salmon Oncorhynchus kisutch in the stream-estuary ecotone of Winchester Creek, South Slough, Oregon, was investigated in 1999–2001. Seines and a rotary screw trap were used to capture fish for dye-marking, and residence time within the ecotone was determined for recaptured marked fish. In the lower estuary, ultrasonic transmitters were used to document residence time and patterns of movement for smolts migrating to the ocean. Nearly half of each brood year moved to the estuary as subyearlings. A portion of age-0 juveniles that moved downstream during spring lived in the ecotone through summer for up to 8 months, then most moved back upstream to overwinter. Fish that moved to the ecotone during fall and winter had mean minimum residence times of 48 d in 1999 and 64 d in 2000. Some of the fish that moved to the ecotone during fall and winter moved into an off-channel beaver pond and resided there for a mean of 49 d. Spring age-1 smolts had a mean minimum residence time in the ecotone of 18 d for both years and used recently restored salt marshes and other off-channel habitats. Smolts implanted with ultrasonic transmitters lived in the lower estuary for an average of 5.8 d, during which their direction of movement corresponded to the direction of tidal flow. Title: LCMP - Residence Time and Seasonal Movements of Juvenile Coho Salmon in the Ecotone and Lower Estuary of Winchester Creek, South Slough, Oregon Abstract -- The juvenile life history of coho salmon Oncorhynchus kisutch in the stream-estuary ecotone of Winchester Creek, South Slough, Oregon, was investigated in 1999–2001. Seines and a rotary screw trap were used to capture fish for dye-marking, and residence time within the ecotone was determined for recaptured marked fish. In the lower estuary, ultrasonic transmitters were used to document residence time and patterns of movement for smolts migrating to the ocean. Nearly half of each brood year moved to the estuary as subyearlings. A portion of age-0 juveniles that moved downstream during spring lived in the ecotone through summer for up to 8 months, then most moved back upstream to overwinter. Fish that moved to the ecotone during fall and winter had mean minimum residence times of 48 d in 1999 and 64 d in 2000. Some of the fish that moved to the ecotone during fall and winter moved into an off-channel beaver pond and resided there for a mean of 49 d. Spring age-1 smolts had a mean minimum residence time in the ecotone of 18 d for both years and used recently restored salt marshes and other off-channel habitats. Smolts implanted with ultrasonic transmitters lived in the lower estuary for an average of 5.8 d, during which their direction of movement corresponded to the direction of tidal flow. Close

• 12. [Article] CRTCP - Minimizing Risks and Mitigation of impacts to Bull Trout (Salvelinus confluentus) from Construction of Temperature Control Facilities at Cougar Reservoir, Oregon 2003

  Abstract -- Because drafting the reservoir may adversely affect bull trout, the Corps funded this study to minimize impacts of construction on bull trout. To protect this population, we need to more fully ...

  Citation × Citation Citation Abstract Copy Title: CRTCP - Minimizing Risks and Mitigation of impacts to Bull Trout (Salvelinus confluentus) from Construction of Temperature Control Facilities at Cougar Reservoir, Oregon 2003 Abstract -- Because drafting the reservoir may adversely affect bull trout, the Corps funded this study to minimize impacts of construction on bull trout. To protect this population, we need to more fully understand the movement and habitat use of bull trout in the South Fork McKenzie watershed, and to develop an emergency action plan should environmental conditions become detrimental to the overall health of the population. Recommendations from this project will be made to the Environmental Coordination Committee in the event that actions to protect bull trout become necessary. Title: CRTCP - Minimizing Risks and Mitigation of impacts to Bull Trout (Salvelinus confluentus) from Construction of Temperature Control Facilities at Cougar Reservoir, Oregon 2003 Abstract -- Because drafting the reservoir may adversely affect bull trout, the Corps funded this study to minimize impacts of construction on bull trout. To protect this population, we need to more fully understand the movement and habitat use of bull trout in the South Fork McKenzie watershed, and to develop an emergency action plan should environmental conditions become detrimental to the overall health of the population. Recommendations from this project will be made to the Environmental Coordination Committee in the event that actions to protect bull trout become necessary. Close

• 13. [Article] CRTCP - Monitoring of Downstream Fish Passage at Cougar Dam in the South Fork McKenzie River, Oregon 1998-00

  Abstract -- In 1993, Oregon Department of Fish and Wildlife (ODFW) began placing adult chinook salmon that were excess to hatchery operations at McKenzie and Willamette Hatchery above Cougar Dam in an ...

  Citation × Citation Citation Abstract Copy Title: CRTCP - Monitoring of Downstream Fish Passage at Cougar Dam in the South Fork McKenzie River, Oregon 1998-00 Abstract -- In 1993, Oregon Department of Fish and Wildlife (ODFW) began placing adult chinook salmon that were excess to hatchery operations at McKenzie and Willamette Hatchery above Cougar Dam in an attempt to restore some of the biological contributions salmon made to the ecology of the South Fork McKenzie River prior to Cougar Dam construction (Table 1). Contributions included increased nutrient input to the ecosystem and an additional food source for predators, including bull trout. In addition, the progeny of these adult salmon provided a landlocked chinook fishery in the reservoir and ODFW was able to discontinue annual releases of juvenile salmon reared in ODFW hatcheries (1996). ODFW assumed most of the salmon attempting to leave the reservoir would be killed by various means upon passage through the turbines or regulating outlet. Between 1994-97, ODFW field observations provided circumstantial evidence that some juvenile chinook were surviving passage through the dam. In 1998, we began monitoring juvenile chinook migration out of the reservoir to determine the number, size, age, and mortality rate of fish passing through the turbines and regulating outlet of Cougar Dam. Title: CRTCP - Monitoring of Downstream Fish Passage at Cougar Dam in the South Fork McKenzie River, Oregon 1998-00 Abstract -- In 1993, Oregon Department of Fish and Wildlife (ODFW) began placing adult chinook salmon that were excess to hatchery operations at McKenzie and Willamette Hatchery above Cougar Dam in an attempt to restore some of the biological contributions salmon made to the ecology of the South Fork McKenzie River prior to Cougar Dam construction (Table 1). Contributions included increased nutrient input to the ecosystem and an additional food source for predators, including bull trout. In addition, the progeny of these adult salmon provided a landlocked chinook fishery in the reservoir and ODFW was able to discontinue annual releases of juvenile salmon reared in ODFW hatcheries (1996). ODFW assumed most of the salmon attempting to leave the reservoir would be killed by various means upon passage through the turbines or regulating outlet. Between 1994-97, ODFW field observations provided circumstantial evidence that some juvenile chinook were surviving passage through the dam. In 1998, we began monitoring juvenile chinook migration out of the reservoir to determine the number, size, age, and mortality rate of fish passing through the turbines and regulating outlet of Cougar Dam. Close

• 14. [Image] Ecology of kokanee salmon and rainbow trout in Crater Lake, a deep ultraoligotrophic caldera lake (Oregon)

  	ill.; Thesis (M.S.)-Oregon State University, 1988; Includes bibliographical references (leaves 74-80)
  	Citation × Citation Citation Abstract Copy Title: Ecology of kokanee salmon and rainbow trout in Crater Lake, a deep ultraoligotrophic caldera lake (Oregon) Author: Buktenica, M. W., (Mark W.) Year: 1988, 2009 ill.; Thesis (M.S.)-Oregon State University, 1988; Includes bibliographical references (leaves 74-80) Title: Ecology of kokanee salmon and rainbow trout in Crater Lake, a deep ultraoligotrophic caldera lake (Oregon) Author: Buktenica, M. W., (Mark W.) Year: 1988, 2009 ill.; Thesis (M.S.)-Oregon State University, 1988; Includes bibliographical references (leaves 74-80) Close

• 15. [Image] Environmental assessment for snowmobile rulemaking in Crater Lake National Park, January 2001

  	ill., maps; "00383.O1D-CRATER LAKE"; "NPSD-306 Jan 2001"; Includes bibliographical references
  	Citation × Citation Citation Abstract Copy Title: Environmental assessment for snowmobile rulemaking in Crater Lake National Park, January 2001 Author: Crater Lake National Park (Agency : U.S.) Year: 2001, 2010 ill., maps; "00383.O1D-CRATER LAKE"; "NPSD-306 Jan 2001"; Includes bibliographical references Title: Environmental assessment for snowmobile rulemaking in Crater Lake National Park, January 2001 Author: Crater Lake National Park (Agency : U.S.) Year: 2001, 2010 ill., maps; "00383.O1D-CRATER LAKE"; "NPSD-306 Jan 2001"; Includes bibliographical references Close

• 16. [Image] Geothermal Exploration of the Puga and Chumathang Geothermal Fields, Ladakh, India

  	Puga and Chumathang Geothermal fields are situated near the collided junction of the Indian and Asian Crystal plates and thermal activity in these fields is attributed to the widespread igneous activity ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Exploration of the Puga and Chumathang Geothermal Fields, Ladakh, India Author: Shanker, R. Puga and Chumathang Geothermal fields are situated near the collided junction of the Indian and Asian Crystal plates and thermal activity in these fields is attributed to the widespread igneous activity of Upper Cretaceous to late Tertiary age. A deep suture zone, recognised in between these two fields and the associated faults provide channels for the upward migration of the thermal fluids. High concentrations of Cl, F, Si02, B, Na, Li, Rb, Cs in thermal fluids signify contribution of magmatic bodies towards heat, and fluid supply. These fields are characterized by high heat flow conditions (13 HFU), abnormal shallow geothermal gradients (0.7 - 2.5 c/m) , high base temperature (220 - 270 C) as obtained by alkalia and Ne-K-Ca geothermometry and low resistivity values (2-20 ohm.m.). Low resistivity zones occupy on an area of three and one sq.km. and extend down to maximum depths of 300 m. and 130 m. at Puga and Chumathang respectively. Shallow drilling (28-130 m.) has established the existence of wet steam reservoirs under moderate pressure (2-4.5 kg/cm^2). Hot fluid (95-135 C) discharges from eight flowing wells ranged from 7.5 to 30 t/h. These thermal fluids are stored in the partly consolidated fluvioglacial deposits of Quarternary to Recent age. The occurrence of a limestone layer in the country rock at Puga brightens the prospects of getting good reservoir at depth. In both these fields two aquifers have been recognised, each having sizeable potential for retaining ground water. The ground water recharge is mainly through snow melt from glaciers in the case of Puga field and principally from Indus river in the case of Chumathangfield Title: Geothermal Exploration of the Puga and Chumathang Geothermal Fields, Ladakh, India Author: Shanker, R. Puga and Chumathang Geothermal fields are situated near the collided junction of the Indian and Asian Crystal plates and thermal activity in these fields is attributed to the widespread igneous activity of Upper Cretaceous to late Tertiary age. A deep suture zone, recognised in between these two fields and the associated faults provide channels for the upward migration of the thermal fluids. High concentrations of Cl, F, Si02, B, Na, Li, Rb, Cs in thermal fluids signify contribution of magmatic bodies towards heat, and fluid supply. These fields are characterized by high heat flow conditions (13 HFU), abnormal shallow geothermal gradients (0.7 - 2.5 c/m) , high base temperature (220 - 270 C) as obtained by alkalia and Ne-K-Ca geothermometry and low resistivity values (2-20 ohm.m.). Low resistivity zones occupy on an area of three and one sq.km. and extend down to maximum depths of 300 m. and 130 m. at Puga and Chumathang respectively. Shallow drilling (28-130 m.) has established the existence of wet steam reservoirs under moderate pressure (2-4.5 kg/cm^2). Hot fluid (95-135 C) discharges from eight flowing wells ranged from 7.5 to 30 t/h. These thermal fluids are stored in the partly consolidated fluvioglacial deposits of Quarternary to Recent age. The occurrence of a limestone layer in the country rock at Puga brightens the prospects of getting good reservoir at depth. In both these fields two aquifers have been recognised, each having sizeable potential for retaining ground water. The ground water recharge is mainly through snow melt from glaciers in the case of Puga field and principally from Indus river in the case of Chumathangfield Close

• 17. [Image] Geothermal Potential of the West Boise Area

  	With increased use being placed on natural gas, electricity, petroleum, and coal, alternative forms of energy have been sought to help release the pressures being placed on these resources. Geothermal ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Potential of the West Boise Area Author: Mink, L.L. Year: 1977 With increased use being placed on natural gas, electricity, petroleum, and coal, alternative forms of energy have been sought to help release the pressures being placed on these resources. Geothermal energy is one of the major alternative forms. In portions of Boise, geothermal resources have been utilized for many years for heating of homes and several state office buildings. Recent investigations in the Boise area have shown that hot water is abundant all along the Boise Foothills. This report discusses two areas showing good potential for future geothermal development. These areas are the Dry Creek Valley and the area between Pierce Gulch and Polecat Gulch. Both areas have water temperatures exceeding 37.8°C. In the Boise area it is found that zones of hot water are associated with some type of structural control. The hot water zones associated with the Dry Creek Valley and the Pierce-Polecat area were found to be located at or near the intersection of major linears mapped along the Boise Foothills. These linears reflect a zone of weakness at depth in the rock allowing warm water to migrate upward from the granitic rock of the Idaho batholith below. By mapping all known fault and linear patterns in the area, it is possible to correlate these zones of weakness with areas of hot water. At the intersection of two or more linears, where fracturing is greatest, the majority of geothermal water has been located Title: Geothermal Potential of the West Boise Area Author: Mink, L.L. Year: 1977 With increased use being placed on natural gas, electricity, petroleum, and coal, alternative forms of energy have been sought to help release the pressures being placed on these resources. Geothermal energy is one of the major alternative forms. In portions of Boise, geothermal resources have been utilized for many years for heating of homes and several state office buildings. Recent investigations in the Boise area have shown that hot water is abundant all along the Boise Foothills. This report discusses two areas showing good potential for future geothermal development. These areas are the Dry Creek Valley and the area between Pierce Gulch and Polecat Gulch. Both areas have water temperatures exceeding 37.8°C. In the Boise area it is found that zones of hot water are associated with some type of structural control. The hot water zones associated with the Dry Creek Valley and the Pierce-Polecat area were found to be located at or near the intersection of major linears mapped along the Boise Foothills. These linears reflect a zone of weakness at depth in the rock allowing warm water to migrate upward from the granitic rock of the Idaho batholith below. By mapping all known fault and linear patterns in the area, it is possible to correlate these zones of weakness with areas of hot water. At the intersection of two or more linears, where fracturing is greatest, the majority of geothermal water has been located Close

• 18. [Image] Geology of the Cove Fort-Sulphurdale KGRA

  	The Cove Fort-Sulphurdale Known Geothermal Resource Area (KGRA) is located on the northwestern margin of the Marysvale volcanic field in southwestern Utah. The geology of the KGRA is dominated by lava ...
  	Citation × Citation Citation Abstract Copy Title: Geology of the Cove Fort-Sulphurdale KGRA Author: Moore, J.N. Year: 1979 The Cove Fort-Sulphurdale Known Geothermal Resource Area (KGRA) is located on the northwestern margin of the Marysvale volcanic field in southwestern Utah. The geology of the KGRA is dominated by lava flows and ash-flow tuffs of late Oligocene to mid-Miocene age that were deposited on faulted sedimentary rocks of Paleozoic to Mesozoic age. The geothermal system of the Cove Fort-Sulphurdale KGRA is structurally controlled by normal faults. High-angle faults control fluid flow within the geothermal reservoir, while the gravitational glide blocks provide an impermeable cap for the geothermal system in the central part of the field. Surficial activity occurring to the north and south of the glide blocks is characterized by the evolution of hydrogen sulfide and deposition of native sulphur. Intense acid alteration of the aluvium, resulting from downward migration of sulphuric acid, has left porous siliceous residues that retain many of the original sedimentary structures. Detailed logs of Union Oil Company drill holes Forminco No. 1, Utah State 42-7, and Utah State 31-33 are included Title: Geology of the Cove Fort-Sulphurdale KGRA Author: Moore, J.N. Year: 1979 The Cove Fort-Sulphurdale Known Geothermal Resource Area (KGRA) is located on the northwestern margin of the Marysvale volcanic field in southwestern Utah. The geology of the KGRA is dominated by lava flows and ash-flow tuffs of late Oligocene to mid-Miocene age that were deposited on faulted sedimentary rocks of Paleozoic to Mesozoic age. The geothermal system of the Cove Fort-Sulphurdale KGRA is structurally controlled by normal faults. High-angle faults control fluid flow within the geothermal reservoir, while the gravitational glide blocks provide an impermeable cap for the geothermal system in the central part of the field. Surficial activity occurring to the north and south of the glide blocks is characterized by the evolution of hydrogen sulfide and deposition of native sulphur. Intense acid alteration of the aluvium, resulting from downward migration of sulphuric acid, has left porous siliceous residues that retain many of the original sedimentary structures. Detailed logs of Union Oil Company drill holes Forminco No. 1, Utah State 42-7, and Utah State 31-33 are included Close

• 19. [Image] Population dynamics of selected zooplankton in three oligotrophic Oregon lakes

  	ill., maps; Typescript (photocopy); Thesis (M.S.)--Oregon State University, 1971; Includes bibliographical references
  	Citation × Citation Citation Abstract Copy Title: Population dynamics of selected zooplankton in three oligotrophic Oregon lakes Author: Malick, James G. Year: 1971, 2008 ill., maps; Typescript (photocopy); Thesis (M.S.)--Oregon State University, 1971; Includes bibliographical references Title: Population dynamics of selected zooplankton in three oligotrophic Oregon lakes Author: Malick, James G. Year: 1971, 2008 ill., maps; Typescript (photocopy); Thesis (M.S.)--Oregon State University, 1971; Includes bibliographical references Close

• 20. [Image] Evolution and dynamics of hybridization in Penstemon subgenus Dasanthera (Scrophulariaceae S.L.)

  	ill.; Thesis (Ph. D.)--Ohio State University, 2001; Includes bibliographical references (leaves 100-114); Advisor: Andrea Wolfe, Evolution, Ecology and Organismal Biology Program
  	Citation × Citation Citation Abstract Copy Title: Evolution and dynamics of hybridization in Penstemon subgenus Dasanthera (Scrophulariaceae S.L.) Author: Datwyler, Shannon Lynn ; 1973- Year: 2001, 2008 ill.; Thesis (Ph. D.)--Ohio State University, 2001; Includes bibliographical references (leaves 100-114); Advisor: Andrea Wolfe, Evolution, Ecology and Organismal Biology Program Title: Evolution and dynamics of hybridization in Penstemon subgenus Dasanthera (Scrophulariaceae S.L.) Author: Datwyler, Shannon Lynn ; 1973- Year: 2001, 2008 ill.; Thesis (Ph. D.)--Ohio State University, 2001; Includes bibliographical references (leaves 100-114); Advisor: Andrea Wolfe, Evolution, Ecology and Organismal Biology Program Close