Patricia A Ortiz (Former Employee)
Science and Products
Renewables-Wildlife Solutions Initiative
The USGS is leading a multi-disciplinary team with members from government, academia, non-profits, and industry, to generate science to inform resolution of wildlife-related issues that can impede development and operations of wind and solar energy facilities.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Lead (Pb) in Bald and Golden Eagles from 38 United States, USA, 2010-2018 Lead (Pb) in Bald and Golden Eagles from 38 United States, USA, 2010-2018
We evaluated lead poisoning in bald and golden eagles during all seasons of the year and from states in each of the four major flyways throughout the continental USA.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Lead exposure of a fossorial rodent varies with the use of ammunition across the landscape Lead exposure of a fossorial rodent varies with the use of ammunition across the landscape
Exposure to heavy metals has been documented in a wide range of wildlife species, but infrequently in ground squirrels. This is despite their tendency to be targets of recreational shooters and the accumulation of lead ammunition in the soil environments they inhabit. We analyzed lead and copper concentrations in liver (nPb = 116, nCu = 101) and femur (nPb = 116, nCu = 116) of Piute...
Authors
Vincent Slabe, Kevin Warner, Zoe Duran, David S. Pilliod, Patricia Ortiz, Diane Schmidt, Shawn Szabo, Todd E. Katzner
The geographic extent of bird populations affected by renewable-energy development The geographic extent of bird populations affected by renewable-energy development
Bird populations are declining globally. Wind and solar energy can reduce emissions of fossil fuels that drive anthropogenic climate change, yet renewable-energy production represents a potential threat to bird species. Surveys to assess potential effects at renewable-energy facilities are exclusively local, and the geographic extent encompassed by birds killed at these facilities is...
Authors
Hannah Vander Zander, David Nelson, Tara Conkling, Taber Allison, James E. Diffendorfer, Thomas Dietsch, Amy L Fesnock, Scott Loss, Patricia Ortiz, Robin Paulmann, Krysta Rodgers, Peter Sanzenbacher, Todd E. Katzner
Demographic implications of lead poisoning for eagles across North America Demographic implications of lead poisoning for eagles across North America
Lead poisoning occurs worldwide in populations of predatory birds, but exposure rates and population impacts are known only from regional studies. We evaluated the lead exposure of 1210 bald and golden eagles from 38 US states across North America, including 620 live eagles. We detected unexpectedly high frequencies of lead poisoning of eagles, both chronic (46 to 47% of bald and golden...
Authors
Vincent Slabe, James Anderson, Brian Millsap, Jeffrey Cooper, Alan Harmata, Marco Restani, Ross Crandall, Barbara Bodenstein, Peter Bloom, Travis Booms, John Buchweitz, Renee Culver, Kim Dickerson, Robert Domenech, Ernesto Dominguez-Villegas, Daniel Driscoll, Brian Smith, Michael Lockhart, David McRuer, Tricia Miller, Patricia Ortiz, Krysta Rogers, Matt Schwarz, Natalie Turley, Brian Woodbridge, Myra Finkelstein, Christian Triana, Christopher DeSorbo, Todd E. Katzner
Illegal killing of nongame wildlife and recreational shooting in conservation areas Illegal killing of nongame wildlife and recreational shooting in conservation areas
Illegal killing of nongame wildlife is a global yet poorly documented problem. The prevalence and ecological consequences of illegal killing are often underestimated or completely unknown. We review the practice of legal recreational shooting and present data gathered from telemetry, surveys, and observations on its association with illegal killing of wildlife (birds and snakes) within
Authors
Todd E. Katzner, Jay Carlisle, Sharon Poessel, Eve Thomason, Benjamin Pauli, David Pilliod, James Belthoff, Julie Heath, Kristina Parker, Kevin Warner, Heather Hayes, Madeline Aberg, Patricia Ortiz, Sandra Amdor, Steven Alsup, Stephanie Coates, Tricia Miller, Zoe Duran
Feeding ecology drives lead exposure of facultative and obligate avian scavengers in the eastern United States Feeding ecology drives lead exposure of facultative and obligate avian scavengers in the eastern United States
Lead poisoning of scavenging birds is a global issue. However, the drivers of lead exposure of avian scavengers have been understood from the perspective of individual species, not cross‐taxa assemblages. We analyzed blood (n = 285) and liver (n = 226) lead concentrations of 5 facultative (American crows [Corvus brachyrhynchos], bald eagles [Haliaeetus leucocephalus], golden eagles...
Authors
Vincent Slabe, James Anderson, Jeff Cooper, Tricia Miller, Bracken Brown, Anna Wrona, Patricia Ortiz, John Buchweitz, David McRuer, Ernesto Dominguez-Villegas, Shannon Behmke, Todd E. Katzner
Lead exposure of red-shouldered hawks during the breeding season in the central Appalachians, USA Lead exposure of red-shouldered hawks during the breeding season in the central Appalachians, USA
Lead is toxic to humans and wildlife. Most studies of lead exposure of raptors focus on the winter, non-breeding season when they scavenge heavily. We evaluated blood lead concentrations (BLCs) of red-shouldered hawks (Buteo lineatus) during the non-scavenging season in the eastern United States. BLCs of 53 of 70 hawks were above the limit of detection ( x¯ = 9.25 µg/dL ± 19.81; ± SD)...
Authors
Todd E. Katzner
Lead in piscivorous raptors during breeding season in the Chesapeake Bay region of Maryland and Virginia, USA Lead in piscivorous raptors during breeding season in the Chesapeake Bay region of Maryland and Virginia, USA
Sources of lead exposure of many bird species are poorly understood. We analyzed blood lead concentrations from osprey (n = 244; Pandion haliaetus) and bald eagles (n = 68; Haliaeetus leucocephalus) and documented potential sources of lead they may encounter. Adult bald eagles had higher blood lead concentrations than did adult osprey. However, blood lead concentrations of nestlings were...
Authors
Vincent Slabe, James Anderson, Jeff Cooper, Bracken Brown, Patricia Ortiz, John Buchweitz, Dave McRuer, Todd E. Katzner
Science and Products
Renewables-Wildlife Solutions Initiative
The USGS is leading a multi-disciplinary team with members from government, academia, non-profits, and industry, to generate science to inform resolution of wildlife-related issues that can impede development and operations of wind and solar energy facilities.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Lead (Pb) in Bald and Golden Eagles from 38 United States, USA, 2010-2018 Lead (Pb) in Bald and Golden Eagles from 38 United States, USA, 2010-2018
We evaluated lead poisoning in bald and golden eagles during all seasons of the year and from states in each of the four major flyways throughout the continental USA.
If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.
Lead exposure of a fossorial rodent varies with the use of ammunition across the landscape Lead exposure of a fossorial rodent varies with the use of ammunition across the landscape
Exposure to heavy metals has been documented in a wide range of wildlife species, but infrequently in ground squirrels. This is despite their tendency to be targets of recreational shooters and the accumulation of lead ammunition in the soil environments they inhabit. We analyzed lead and copper concentrations in liver (nPb = 116, nCu = 101) and femur (nPb = 116, nCu = 116) of Piute...
Authors
Vincent Slabe, Kevin Warner, Zoe Duran, David S. Pilliod, Patricia Ortiz, Diane Schmidt, Shawn Szabo, Todd E. Katzner
The geographic extent of bird populations affected by renewable-energy development The geographic extent of bird populations affected by renewable-energy development
Bird populations are declining globally. Wind and solar energy can reduce emissions of fossil fuels that drive anthropogenic climate change, yet renewable-energy production represents a potential threat to bird species. Surveys to assess potential effects at renewable-energy facilities are exclusively local, and the geographic extent encompassed by birds killed at these facilities is...
Authors
Hannah Vander Zander, David Nelson, Tara Conkling, Taber Allison, James E. Diffendorfer, Thomas Dietsch, Amy L Fesnock, Scott Loss, Patricia Ortiz, Robin Paulmann, Krysta Rodgers, Peter Sanzenbacher, Todd E. Katzner
Demographic implications of lead poisoning for eagles across North America Demographic implications of lead poisoning for eagles across North America
Lead poisoning occurs worldwide in populations of predatory birds, but exposure rates and population impacts are known only from regional studies. We evaluated the lead exposure of 1210 bald and golden eagles from 38 US states across North America, including 620 live eagles. We detected unexpectedly high frequencies of lead poisoning of eagles, both chronic (46 to 47% of bald and golden...
Authors
Vincent Slabe, James Anderson, Brian Millsap, Jeffrey Cooper, Alan Harmata, Marco Restani, Ross Crandall, Barbara Bodenstein, Peter Bloom, Travis Booms, John Buchweitz, Renee Culver, Kim Dickerson, Robert Domenech, Ernesto Dominguez-Villegas, Daniel Driscoll, Brian Smith, Michael Lockhart, David McRuer, Tricia Miller, Patricia Ortiz, Krysta Rogers, Matt Schwarz, Natalie Turley, Brian Woodbridge, Myra Finkelstein, Christian Triana, Christopher DeSorbo, Todd E. Katzner
Illegal killing of nongame wildlife and recreational shooting in conservation areas Illegal killing of nongame wildlife and recreational shooting in conservation areas
Illegal killing of nongame wildlife is a global yet poorly documented problem. The prevalence and ecological consequences of illegal killing are often underestimated or completely unknown. We review the practice of legal recreational shooting and present data gathered from telemetry, surveys, and observations on its association with illegal killing of wildlife (birds and snakes) within
Authors
Todd E. Katzner, Jay Carlisle, Sharon Poessel, Eve Thomason, Benjamin Pauli, David Pilliod, James Belthoff, Julie Heath, Kristina Parker, Kevin Warner, Heather Hayes, Madeline Aberg, Patricia Ortiz, Sandra Amdor, Steven Alsup, Stephanie Coates, Tricia Miller, Zoe Duran
Feeding ecology drives lead exposure of facultative and obligate avian scavengers in the eastern United States Feeding ecology drives lead exposure of facultative and obligate avian scavengers in the eastern United States
Lead poisoning of scavenging birds is a global issue. However, the drivers of lead exposure of avian scavengers have been understood from the perspective of individual species, not cross‐taxa assemblages. We analyzed blood (n = 285) and liver (n = 226) lead concentrations of 5 facultative (American crows [Corvus brachyrhynchos], bald eagles [Haliaeetus leucocephalus], golden eagles...
Authors
Vincent Slabe, James Anderson, Jeff Cooper, Tricia Miller, Bracken Brown, Anna Wrona, Patricia Ortiz, John Buchweitz, David McRuer, Ernesto Dominguez-Villegas, Shannon Behmke, Todd E. Katzner
Lead exposure of red-shouldered hawks during the breeding season in the central Appalachians, USA Lead exposure of red-shouldered hawks during the breeding season in the central Appalachians, USA
Lead is toxic to humans and wildlife. Most studies of lead exposure of raptors focus on the winter, non-breeding season when they scavenge heavily. We evaluated blood lead concentrations (BLCs) of red-shouldered hawks (Buteo lineatus) during the non-scavenging season in the eastern United States. BLCs of 53 of 70 hawks were above the limit of detection ( x¯ = 9.25 µg/dL ± 19.81; ± SD)...
Authors
Todd E. Katzner
Lead in piscivorous raptors during breeding season in the Chesapeake Bay region of Maryland and Virginia, USA Lead in piscivorous raptors during breeding season in the Chesapeake Bay region of Maryland and Virginia, USA
Sources of lead exposure of many bird species are poorly understood. We analyzed blood lead concentrations from osprey (n = 244; Pandion haliaetus) and bald eagles (n = 68; Haliaeetus leucocephalus) and documented potential sources of lead they may encounter. Adult bald eagles had higher blood lead concentrations than did adult osprey. However, blood lead concentrations of nestlings were...
Authors
Vincent Slabe, James Anderson, Jeff Cooper, Bracken Brown, Patricia Ortiz, John Buchweitz, Dave McRuer, Todd E. Katzner