Julie Yee (Former Employee)
Science and Products
Filter Total Items: 63
Egg laying sequence influences egg mercury concentrations and egg size in three bird species: Implications for contaminant monitoring programs Egg laying sequence influences egg mercury concentrations and egg size in three bird species: Implications for contaminant monitoring programs
Bird eggs are commonly used in contaminant monitoring programs and toxicological risk assessments, but intra-clutch variation and sampling methodology could influence interpretability. We examined the influence of egg laying sequence on egg mercury concentrations and burdens in American avocets, black-necked stilts, and Forster's terns. The average decline in mercury concentrations...
Authors
Joshua T. Ackerman, Collin A. Eagles-Smith, Mark P. Herzog, Julie L. Yee, C. Alex Hartman
Sampling to estimate population size and detect trends in Tricolored Blackbirds Sampling to estimate population size and detect trends in Tricolored Blackbirds
The Tricolored Blackbird (Agelaius tricolor) is a medium-sized passerine that nests in the largest colonies of any North American landbird since the extinction of the passenger pigeon (Ectopistes migratorius) over 100 years ago (Beedy and Hamilton 1999). The species has a restricted range that occurs almost exclusively within California, with only a few hundred birds scattered in small...
Authors
Robert Meese, Julie L. Yee, Marcel Holyoak
Experimental enhancement of pickleweed, Suisun Bay, California Experimental enhancement of pickleweed, Suisun Bay, California
As mitigation for habitat impacted by the expansion of a pier on Suisun Bay, California, two vehicle parking lots (0.36 ha and 0.13 ha) were restored by being excavated, graded, and contoured using dredged sediments to the topography or elevation of nearby wetlands. We asked if pickleweed (Sarcocornia pacifica L, [Amaranthaceae]) colonization could be enhanced by experimental...
Authors
A. Keith Miles, Dirk H. Van Vuren, Danika C. Tsao, Julie L. Yee
The precarious persistence of the endangered Sierra Madre yellow-legged frog Rana muscosa in southern California, USA The precarious persistence of the endangered Sierra Madre yellow-legged frog Rana muscosa in southern California, USA
We conducted surveys for the Endangered Sierra Madre yellow-legged frog Rana muscosa throughout southern California to evaluate the current distribution and status of the species. Surveys were conducted during 2000–2009 at 150 unique streams and lakes within the San Gabriel, San Bernardino, San Jacinto, and Palomar mountains of southern California. Only nine small, geographically...
Authors
Adam R. Backlin, Cynthia J. Hitchcock, Elizabeth A. Gallegos, Julie L. Yee, Robert N. Fisher
The critical role of islands for waterbird breeding and foraging habitat in managed ponds of the South Bay Salt Pond Restoration Project, South San Francisco Bay, California The critical role of islands for waterbird breeding and foraging habitat in managed ponds of the South Bay Salt Pond Restoration Project, South San Francisco Bay, California
The South Bay Salt Pond Restoration Project aims to restore 50–90 percent of former salt evaporation ponds into tidal marsh in South San Francisco Bay, California. However, large numbers of waterbirds use these ponds annually as nesting and foraging habitat. Islands within ponds are particularly important habitat for nesting, foraging, and roosting waterbirds. To maintain current...
Authors
Joshua T. Ackerman, C. Alex Hartman, Mark P. Herzog, Lacy M. Smith, Stacy M. Moskal, Susan E.W. De La Cruz, Julie L. Yee, John Y. Takekawa
Distance to human populations influences epidemiology of respiratory disease in desert tortoises Distance to human populations influences epidemiology of respiratory disease in desert tortoises
We explored variables likely to affect health of Agassiz's desert tortoises (Gopherus agassizii) in a 1,183-km2 study area in the central Mojave Desert of California between 2005 and 2008. We evaluated 1,004 tortoises for prevalence and spatial distribution of 2 pathogens, Mycoplasma agassizii and M. testudineum, that cause upper respiratory tract disease. We defined tortoises as test...
Authors
Kristin H. Berry, no longer USGS Ashley A. Coble, Julie L. Yee, Jeremy S. Mack, William M. Perry, Kemp M. Anderson, Mary B. Brown
Science and Products
Filter Total Items: 63
Egg laying sequence influences egg mercury concentrations and egg size in three bird species: Implications for contaminant monitoring programs Egg laying sequence influences egg mercury concentrations and egg size in three bird species: Implications for contaminant monitoring programs
Bird eggs are commonly used in contaminant monitoring programs and toxicological risk assessments, but intra-clutch variation and sampling methodology could influence interpretability. We examined the influence of egg laying sequence on egg mercury concentrations and burdens in American avocets, black-necked stilts, and Forster's terns. The average decline in mercury concentrations...
Authors
Joshua T. Ackerman, Collin A. Eagles-Smith, Mark P. Herzog, Julie L. Yee, C. Alex Hartman
Sampling to estimate population size and detect trends in Tricolored Blackbirds Sampling to estimate population size and detect trends in Tricolored Blackbirds
The Tricolored Blackbird (Agelaius tricolor) is a medium-sized passerine that nests in the largest colonies of any North American landbird since the extinction of the passenger pigeon (Ectopistes migratorius) over 100 years ago (Beedy and Hamilton 1999). The species has a restricted range that occurs almost exclusively within California, with only a few hundred birds scattered in small...
Authors
Robert Meese, Julie L. Yee, Marcel Holyoak
Experimental enhancement of pickleweed, Suisun Bay, California Experimental enhancement of pickleweed, Suisun Bay, California
As mitigation for habitat impacted by the expansion of a pier on Suisun Bay, California, two vehicle parking lots (0.36 ha and 0.13 ha) were restored by being excavated, graded, and contoured using dredged sediments to the topography or elevation of nearby wetlands. We asked if pickleweed (Sarcocornia pacifica L, [Amaranthaceae]) colonization could be enhanced by experimental...
Authors
A. Keith Miles, Dirk H. Van Vuren, Danika C. Tsao, Julie L. Yee
The precarious persistence of the endangered Sierra Madre yellow-legged frog Rana muscosa in southern California, USA The precarious persistence of the endangered Sierra Madre yellow-legged frog Rana muscosa in southern California, USA
We conducted surveys for the Endangered Sierra Madre yellow-legged frog Rana muscosa throughout southern California to evaluate the current distribution and status of the species. Surveys were conducted during 2000–2009 at 150 unique streams and lakes within the San Gabriel, San Bernardino, San Jacinto, and Palomar mountains of southern California. Only nine small, geographically...
Authors
Adam R. Backlin, Cynthia J. Hitchcock, Elizabeth A. Gallegos, Julie L. Yee, Robert N. Fisher
The critical role of islands for waterbird breeding and foraging habitat in managed ponds of the South Bay Salt Pond Restoration Project, South San Francisco Bay, California The critical role of islands for waterbird breeding and foraging habitat in managed ponds of the South Bay Salt Pond Restoration Project, South San Francisco Bay, California
The South Bay Salt Pond Restoration Project aims to restore 50–90 percent of former salt evaporation ponds into tidal marsh in South San Francisco Bay, California. However, large numbers of waterbirds use these ponds annually as nesting and foraging habitat. Islands within ponds are particularly important habitat for nesting, foraging, and roosting waterbirds. To maintain current...
Authors
Joshua T. Ackerman, C. Alex Hartman, Mark P. Herzog, Lacy M. Smith, Stacy M. Moskal, Susan E.W. De La Cruz, Julie L. Yee, John Y. Takekawa
Distance to human populations influences epidemiology of respiratory disease in desert tortoises Distance to human populations influences epidemiology of respiratory disease in desert tortoises
We explored variables likely to affect health of Agassiz's desert tortoises (Gopherus agassizii) in a 1,183-km2 study area in the central Mojave Desert of California between 2005 and 2008. We evaluated 1,004 tortoises for prevalence and spatial distribution of 2 pathogens, Mycoplasma agassizii and M. testudineum, that cause upper respiratory tract disease. We defined tortoises as test...
Authors
Kristin H. Berry, no longer USGS Ashley A. Coble, Julie L. Yee, Jeremy S. Mack, William M. Perry, Kemp M. Anderson, Mary B. Brown