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• 621. [Image] Anomalies of larval and juvenile shortnose and Lost River suckers in Upper Klamath Lake, Oregon

  	Abstract-Larval and juvenile shortnose {Chasmistes brevirostris) and Lost River (Deltistes luxatus) suckers from Upper Klamath Lake, OR, were examined to determine anomaly rates for fins, eyes, spinal ...
  	Citation × Citation Citation Abstract Copy Title: Anomalies of larval and juvenile shortnose and Lost River suckers in Upper Klamath Lake, Oregon Author: Plunkett, Steven R.; Snyder-Conn, Elaine Year: 2000, 2005 Abstract-Larval and juvenile shortnose {Chasmistes brevirostris) and Lost River (Deltistes luxatus) suckers from Upper Klamath Lake, OR, were examined to determine anomaly rates for fins, eyes, spinal column, vertebrae, and osteocranium, and their possible associations with water quality and pesticides. X-rays of 1,550 fish and 1,395 matching specimens, collected in 1993, were ranked on the severity of anomalies. One or more anomalies were observed in 15.9% of shortnose suckers and 8.2% of Lost River suckers. Anomaly rates exceeding 1.0%, greater than rates expected from high water quality systems, were observed for lordosis and scoliosis, and abnormalities of the vertebrae, opercula, and pectoral and pelvic fins in shortnose suckers, and abnormalities of vertebrae and opercula in Lost River suckers. The highest rates of anomalies were in vertebrae, pelvic fins, and opercula in shortnose suckers, and opercula and vertebrae in Lost River suckers. Shortnose suckers exhibited higher rates than Lost River suckers for almost all anomalies. Particular anomaly rates differed significantly among sites. There were also substantially more anomalies found in larvae and small juveniles than in larger juveniles. Based on the high anomaly rates observed in this study, it is possible that 0-aged sucker cohorts in Upper Klamath Lake are far more vulnerable to mortality. Title: Anomalies of larval and juvenile shortnose and Lost River suckers in Upper Klamath Lake, Oregon Author: Plunkett, Steven R.; Snyder-Conn, Elaine Year: 2000, 2005 Abstract-Larval and juvenile shortnose {Chasmistes brevirostris) and Lost River (Deltistes luxatus) suckers from Upper Klamath Lake, OR, were examined to determine anomaly rates for fins, eyes, spinal column, vertebrae, and osteocranium, and their possible associations with water quality and pesticides. X-rays of 1,550 fish and 1,395 matching specimens, collected in 1993, were ranked on the severity of anomalies. One or more anomalies were observed in 15.9% of shortnose suckers and 8.2% of Lost River suckers. Anomaly rates exceeding 1.0%, greater than rates expected from high water quality systems, were observed for lordosis and scoliosis, and abnormalities of the vertebrae, opercula, and pectoral and pelvic fins in shortnose suckers, and abnormalities of vertebrae and opercula in Lost River suckers. The highest rates of anomalies were in vertebrae, pelvic fins, and opercula in shortnose suckers, and opercula and vertebrae in Lost River suckers. Shortnose suckers exhibited higher rates than Lost River suckers for almost all anomalies. Particular anomaly rates differed significantly among sites. There were also substantially more anomalies found in larvae and small juveniles than in larger juveniles. Based on the high anomaly rates observed in this study, it is possible that 0-aged sucker cohorts in Upper Klamath Lake are far more vulnerable to mortality. Close

• 622. [Image] Water Symposium: Symposium before the Committee on Energy and Natural Resources, United States Senate, One Hundred Ninth Congress, First Session, on Water Issues, April 5, 2005

  	iii; 99p.; "Printed for the use of the Committee on Energy and Natural Resources"; Distributed to some depository libraries in microfiche
  	Citation × Citation Citation Abstract Copy Title: Water Symposium: Symposium before the Committee on Energy and Natural Resources, United States Senate, One Hundred Ninth Congress, First Session, on Water Issues, April 5, 2005 Author: Water Symposium (2005: Washington, D.C.) Year: 2005, 2006 iii; 99p.; "Printed for the use of the Committee on Energy and Natural Resources"; Distributed to some depository libraries in microfiche Title: Water Symposium: Symposium before the Committee on Energy and Natural Resources, United States Senate, One Hundred Ninth Congress, First Session, on Water Issues, April 5, 2005 Author: Water Symposium (2005: Washington, D.C.) Year: 2005, 2006 iii; 99p.; "Printed for the use of the Committee on Energy and Natural Resources"; Distributed to some depository libraries in microfiche Close

• 623. [Image] Resolving the Klamath

  	"October 1999"; Cover title
  	Citation × Citation Citation Abstract Copy Title: Resolving the Klamath Year: 1999, 2004 "October 1999"; Cover title Title: Resolving the Klamath Year: 1999, 2004 "October 1999"; Cover title Close

• 624. [Image] Range maps of terrestrial species in the interior Columbia River basin and Northern portions of the Klamath and Great Basins

  	Abstract Marcot, Bruce G.; Wales, Barbara C; Demmer, Rick. 2003. Range maps of terrestrial species in the interior Columbia River basin and northern portions of the Klamath and Great Basins. Gen. Tech. ...
  	Citation × Citation Citation Abstract Copy Title: Range maps of terrestrial species in the interior Columbia River basin and Northern portions of the Klamath and Great Basins Author: Marcot, Bruce G. Year: 2003, 2005, 2004 Abstract Marcot, Bruce G.; Wales, Barbara C; Demmer, Rick. 2003. Range maps of terrestrial species in the interior Columbia River basin and northern portions of the Klamath and Great Basins. Gen. Tech. Rep. PNW-GTR-583. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 304 p. Current range distribution maps are presented for 14 invertebrate, 26 amphibian, 26 reptile, 339 bird, and 125 mammal species and selected subspecies (530 total taxa) of the interior Columbia River basin and northern portions of the Klamath and Great Basins in the United States. Also presented are maps of historical ranges of 3 bird and 10 mammal species, and 6 maps of natural areas designated by federal agencies and other organizations. The species range maps were derived from a variety of publications and from expert review and unpublished data, and thus differ in degree of accuracy and resolution. The species maps are available in computer versions and are indexed herein by common and scientific names. Keywords: Maps, species range, species distribution, wildlife, invertebrates, arthropods, amphibians, reptiles, birds, mammals, bats, biodiversity, endemism, natural areas, interior Columbia River basin, Klamath Basin, Great Basin. Title: Range maps of terrestrial species in the interior Columbia River basin and Northern portions of the Klamath and Great Basins Author: Marcot, Bruce G. Year: 2003, 2005, 2004 Abstract Marcot, Bruce G.; Wales, Barbara C; Demmer, Rick. 2003. Range maps of terrestrial species in the interior Columbia River basin and northern portions of the Klamath and Great Basins. Gen. Tech. Rep. PNW-GTR-583. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 304 p. Current range distribution maps are presented for 14 invertebrate, 26 amphibian, 26 reptile, 339 bird, and 125 mammal species and selected subspecies (530 total taxa) of the interior Columbia River basin and northern portions of the Klamath and Great Basins in the United States. Also presented are maps of historical ranges of 3 bird and 10 mammal species, and 6 maps of natural areas designated by federal agencies and other organizations. The species range maps were derived from a variety of publications and from expert review and unpublished data, and thus differ in degree of accuracy and resolution. The species maps are available in computer versions and are indexed herein by common and scientific names. Keywords: Maps, species range, species distribution, wildlife, invertebrates, arthropods, amphibians, reptiles, birds, mammals, bats, biodiversity, endemism, natural areas, interior Columbia River basin, Klamath Basin, Great Basin. Close

• 625. [Image] Histopathological changes in gills of Lost River suckers (Deltistes luxatus) exposed to elevated ammonia and elevated pH

  	Lease, Hilary M., Histopathological Changes in Gills of Lost River Suckers (Deltistes luxatus) Exposed to Elevated Ammonia and Elevated pH, M.S., Department of Zoology and Physiology, December, 2000. ...
  	Citation × Citation Citation Abstract Copy Title: Histopathological changes in gills of Lost River suckers (Deltistes luxatus) exposed to elevated ammonia and elevated pH Author: Lease, Hilary Marian Year: 2000, 2008, 2005 Lease, Hilary M., Histopathological Changes in Gills of Lost River Suckers (Deltistes luxatus) Exposed to Elevated Ammonia and Elevated pH, M.S., Department of Zoology and Physiology, December, 2000. The Lost River sucker {Deltistes luxatus) is a federally listed, endangered fish species endemic to Upper Klamath Lake?a large, shallow hypereutrophic lake in southern Oregon. Sucker population declines in the lake over the past few decades are thought to be partly attributable to extreme water quality conditions, including elevated ammonia concentrations and elevated pH, that occur during summer cyanobacterial blooms. I analyzed structural changes in gills of larval Lost River suckers after they were exposed to elevated pH and elevated ammonia concentrations in chronic toxicity tests conducted in the laboratory. Histopathological changes in sucker lamellae were observed at ammonia concentrations that did not significantly decrease survival, growth, whole-body ion content, or swimming performance. Structural changes that I evaluated included O2 diffusion distance, lamellar thickness, hyperplasic and hypertrophic mucous cells, and infiltration of white blood cells into the lymphatic space. The increases in diffusion distance and lamellar thickness were statistically significant (P < 0.05). These gill changes are indicative of potentially compromised respiratory and ionoregulatory capacity. Because in this species gill structural changes appear to be a more sensitive indicator of stress in eutrophic water quality conditions than are the more traditional sublethal indices, gill histopathology might be useful for monitoring the health of Lost River suckers in Upper Klamath Lake. Title: Histopathological changes in gills of Lost River suckers (Deltistes luxatus) exposed to elevated ammonia and elevated pH Author: Lease, Hilary Marian Year: 2000, 2008, 2005 Lease, Hilary M., Histopathological Changes in Gills of Lost River Suckers (Deltistes luxatus) Exposed to Elevated Ammonia and Elevated pH, M.S., Department of Zoology and Physiology, December, 2000. The Lost River sucker {Deltistes luxatus) is a federally listed, endangered fish species endemic to Upper Klamath Lake?a large, shallow hypereutrophic lake in southern Oregon. Sucker population declines in the lake over the past few decades are thought to be partly attributable to extreme water quality conditions, including elevated ammonia concentrations and elevated pH, that occur during summer cyanobacterial blooms. I analyzed structural changes in gills of larval Lost River suckers after they were exposed to elevated pH and elevated ammonia concentrations in chronic toxicity tests conducted in the laboratory. Histopathological changes in sucker lamellae were observed at ammonia concentrations that did not significantly decrease survival, growth, whole-body ion content, or swimming performance. Structural changes that I evaluated included O2 diffusion distance, lamellar thickness, hyperplasic and hypertrophic mucous cells, and infiltration of white blood cells into the lymphatic space. The increases in diffusion distance and lamellar thickness were statistically significant (P < 0.05). These gill changes are indicative of potentially compromised respiratory and ionoregulatory capacity. Because in this species gill structural changes appear to be a more sensitive indicator of stress in eutrophic water quality conditions than are the more traditional sublethal indices, gill histopathology might be useful for monitoring the health of Lost River suckers in Upper Klamath Lake. Close

• 626. [Image] Nitrogen and phosphorus loading from drained wetlands adjacent to Upper Klamath and Agency Lakes, Oregon

  	Two maps digitized separately; Includes bibliographical references (p. 44-49)
  	Citation × Citation Citation Abstract Copy Title: Nitrogen and phosphorus loading from drained wetlands adjacent to Upper Klamath and Agency Lakes, Oregon Author: Snyder, Daniel T. Year: 1997, 2005, 2004 Two maps digitized separately; Includes bibliographical references (p. 44-49) Title: Nitrogen and phosphorus loading from drained wetlands adjacent to Upper Klamath and Agency Lakes, Oregon Author: Snyder, Daniel T. Year: 1997, 2005, 2004 Two maps digitized separately; Includes bibliographical references (p. 44-49) Close

• 627. [Image] School-based Klamath River restoration project, phases V, VI & VII, 319h Clean Water Act

  	ABSTRACT Phase VI of the School-Based Klamath Restoration Project (319h) is a collaborative effort between seven Siskiyou County schools, the Siskiyou County Office of Education (SCOE), and the United ...
  	Citation × Citation Citation Abstract Copy Title: School-based Klamath River restoration project, phases V, VI & VII, 319h Clean Water Act Author: Rilling, Trudy S. Year: 2000, 2005 ABSTRACT Phase VI of the School-Based Klamath Restoration Project (319h) is a collaborative effort between seven Siskiyou County schools, the Siskiyou County Office of Education (SCOE), and the United States Fish and Wildlife Service (USFWS). The objectives of the project include: ? Expanding hands-on field science watershed education. ? Encouraging a sense of resource stewardship among students at all grade levels. ? Collecting quality data for inclusion in the 319h data base. ? Teaching applications of the scientific method. ? Providing on-going inservice training for teachers to increase the effectiveness of the project. Project tasks that were completed include acquisition and analysis of Klamath River Watershed Data, including river water temperatures, river cross sectional profiles and spawning ground surveys. Descriptions of methodology are included in the report. Many other watershed-related projects were undertaken by schools. In some cases the field data was collected and compiled by agency personnel. The spawning ground survey data collected by student volunteers was part of a project conducted by the California Department of Fish and Game and the U.S. Forest Service. Although a substantial amount of excellent work has been accomplished by the schools, the opportunity exists to improve the program at all levels. Increased field and technical support is needed to successfully integrate the goals of the project. Computer training for teachers and students is an essential component of the project, which would allow analysis of data and creation of web sites within classrooms. Data analysis and reporting is the critical component of the project that would provide students with a complete understanding of scientific research methodology. Providing a forum for communication between the 319h participants is another important area of the project that needs to be expanded. Travel time, mountainous topography, and intense winter storms can be barriers to travel in Siskiyou County. Communication helps to increase the level of standardization of data collection and transfer and gives teachers a chance to share successful ideas. Communication also sustains the positive momentum of the project, reinforcing the idea of working as a team towards establishing common goals for watershed education. Title: School-based Klamath River restoration project, phases V, VI & VII, 319h Clean Water Act Author: Rilling, Trudy S. Year: 2000, 2005 ABSTRACT Phase VI of the School-Based Klamath Restoration Project (319h) is a collaborative effort between seven Siskiyou County schools, the Siskiyou County Office of Education (SCOE), and the United States Fish and Wildlife Service (USFWS). The objectives of the project include: ? Expanding hands-on field science watershed education. ? Encouraging a sense of resource stewardship among students at all grade levels. ? Collecting quality data for inclusion in the 319h data base. ? Teaching applications of the scientific method. ? Providing on-going inservice training for teachers to increase the effectiveness of the project. Project tasks that were completed include acquisition and analysis of Klamath River Watershed Data, including river water temperatures, river cross sectional profiles and spawning ground surveys. Descriptions of methodology are included in the report. Many other watershed-related projects were undertaken by schools. In some cases the field data was collected and compiled by agency personnel. The spawning ground survey data collected by student volunteers was part of a project conducted by the California Department of Fish and Game and the U.S. Forest Service. Although a substantial amount of excellent work has been accomplished by the schools, the opportunity exists to improve the program at all levels. Increased field and technical support is needed to successfully integrate the goals of the project. Computer training for teachers and students is an essential component of the project, which would allow analysis of data and creation of web sites within classrooms. Data analysis and reporting is the critical component of the project that would provide students with a complete understanding of scientific research methodology. Providing a forum for communication between the 319h participants is another important area of the project that needs to be expanded. Travel time, mountainous topography, and intense winter storms can be barriers to travel in Siskiyou County. Communication helps to increase the level of standardization of data collection and transfer and gives teachers a chance to share successful ideas. Communication also sustains the positive momentum of the project, reinforcing the idea of working as a team towards establishing common goals for watershed education. Close

• 628. [Image] Water management and endangered species issues in the Klamath Basin : oversight field hearing before the Committee on Resources, U.S. House of Representatives, One Hundred Seventh Congress, first session, June 16, 2001 in Klamath Falls, Oregon

  	"Serial no. 107-39."
  	Citation × Citation Citation Abstract Copy Title: Water management and endangered species issues in the Klamath Basin : oversight field hearing before the Committee on Resources, U.S. House of Representatives, One Hundred Seventh Congress, first session, June 16, 2001 in Klamath Falls, Oregon Author: United States. Congress. House. Committee on Resources Year: 2002, 2005, 2004 "Serial no. 107-39." Title: Water management and endangered species issues in the Klamath Basin : oversight field hearing before the Committee on Resources, U.S. House of Representatives, One Hundred Seventh Congress, first session, June 16, 2001 in Klamath Falls, Oregon Author: United States. Congress. House. Committee on Resources Year: 2002, 2005, 2004 "Serial no. 107-39." Close