Joshua T Ackerman

Summary

Affiliation: U.S. Geological Survey
Country: USA

Publications

  1. ncbi request reprint Methylmercury is the predominant form of mercury in bird eggs: a synthesis
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Dixon Field Station, 800 Business Park Drive, Suite D, Dixon, California 95620, USA
    Environ Sci Technol 47:2052-60. 2013
  2. doi request reprint Does mercury contamination reduce body condition of endangered California clapper rails?
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California, Davis, CA 95616, USA
    Environ Pollut 162:439-48. 2012
  3. ncbi request reprint Mercury concentrations and space use of pre-breeding American avocets and black-necked stilts in San Francisco Bay
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, CA 95616, USA
    Sci Total Environ 384:452-66. 2007
  4. doi request reprint Bird mercury concentrations change rapidly as chicks age: toxicological risk is highest at hatching and fledging
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California Davis, Davis, California 95616, USA
    Environ Sci Technol 45:5418-25. 2011
  5. doi request reprint Agricultural wetlands as potential hotspots for mercury bioaccumulation: experimental evidence using caged fish
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California, Davis, California 95616, USA
    Environ Sci Technol 44:1451-7. 2010
  6. doi request reprint Invertebrate mercury bioaccumulation in permanent, seasonal, and flooded rice wetlands within California's Central Valley
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, CA 95616, USA
    Sci Total Environ 408:666-71. 2010
  7. doi request reprint Selenium bioaccumulation and body condition in shorebirds and terns breeding in San Francisco Bay, California, USA
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, California 95616, USA
    Environ Toxicol Chem 28:2134-41. 2009
  8. ncbi request reprint Integrating toxicity risk in bird eggs and chicks: using chick down feathers to estimate mercury concentrations in eggs
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, California 95616, USA
    Environ Sci Technol 43:2166-72. 2009
  9. ncbi request reprint Mercury contamination and effects on survival of American avocet and black-necked stilt chicks in San Francisco Bay
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California, One Shields Avenue, Davis, CA 95616, USA
    Ecotoxicology 17:103-16. 2008
  10. doi request reprint Mercury concentrations in blood and feathers of prebreeding Forster's terns in relation to space use of San Francisco Bay, California, USA, habitats
    Joshua T Ackerman
    US Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, California 95616, USA
    Environ Toxicol Chem 27:897-908. 2008

Detail Information

Publications27

  1. ncbi request reprint Methylmercury is the predominant form of mercury in bird eggs: a synthesis
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Dixon Field Station, 800 Business Park Drive, Suite D, Dixon, California 95620, USA
    Environ Sci Technol 47:2052-60. 2013
    ..Our results support the use of total mercury concentrations to estimate methylmercury concentrations in bird eggs...
  2. doi request reprint Does mercury contamination reduce body condition of endangered California clapper rails?
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California, Davis, CA 95616, USA
    Environ Pollut 162:439-48. 2012
    ..Our results indicate the potential for detrimental effects of mercury contamination on endangered California clapper rails in tidal marsh habitats...
  3. ncbi request reprint Mercury concentrations and space use of pre-breeding American avocets and black-necked stilts in San Francisco Bay
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, CA 95616, USA
    Sci Total Environ 384:452-66. 2007
    ....
  4. doi request reprint Bird mercury concentrations change rapidly as chicks age: toxicological risk is highest at hatching and fledging
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California Davis, Davis, California 95616, USA
    Environ Sci Technol 45:5418-25. 2011
    ....
  5. doi request reprint Agricultural wetlands as potential hotspots for mercury bioaccumulation: experimental evidence using caged fish
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California, Davis, California 95616, USA
    Environ Sci Technol 44:1451-7. 2010
    ..Our results indicate that shallowly flooded rice fields are potential hotspots for MeHg bioaccumulation and, due to their global prevalence, suggest that agricultural wetlands may be important contributors to MeHg contamination...
  6. doi request reprint Invertebrate mercury bioaccumulation in permanent, seasonal, and flooded rice wetlands within California's Central Valley
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, CA 95616, USA
    Sci Total Environ 408:666-71. 2010
    ....
  7. doi request reprint Selenium bioaccumulation and body condition in shorebirds and terns breeding in San Francisco Bay, California, USA
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, California 95616, USA
    Environ Toxicol Chem 28:2134-41. 2009
    ..These variable results illustrate the complexity of Se bioaccumulation and highlight the need to sample multiple species and examine several factors to assess the impact of Se on wildlife...
  8. ncbi request reprint Integrating toxicity risk in bird eggs and chicks: using chick down feathers to estimate mercury concentrations in eggs
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, California 95616, USA
    Environ Sci Technol 43:2166-72. 2009
    ....
  9. ncbi request reprint Mercury contamination and effects on survival of American avocet and black-necked stilt chicks in San Francisco Bay
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California, One Shields Avenue, Davis, CA 95616, USA
    Ecotoxicology 17:103-16. 2008
    ....
  10. doi request reprint Mercury concentrations in blood and feathers of prebreeding Forster's terns in relation to space use of San Francisco Bay, California, USA, habitats
    Joshua T Ackerman
    US Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, California 95616, USA
    Environ Toxicol Chem 27:897-908. 2008
    ..These data illustrate the importance of space use and tissue type in interpreting mercury concentrations in birds...
  11. doi request reprint Survival of postfledging Forster's terns in relation to mercury exposure in San Francisco Bay
    Joshua T Ackerman
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, University of California, One Shields Avenue, Davis, CA 95616, USA
    Ecotoxicology 17:789-801. 2008
    ..Our results indicate that colony site, hatching date, and age influenced mercury concentrations in fledgling Forster's terns, but that mercury did not influence postfledging survival...
  12. doi request reprint Migration strategy affects avian influenza dynamics in mallards (Anas platyrhynchos)
    Nichola J Hill
    US Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary Field Station, Vallejo, CA 94592, USA
    Mol Ecol 21:5986-99. 2012
    ..e. H5N2) at lower latitudes. This study supports a model of virus exchange in temperate regions driven by the convergence of wild birds with separate geographic origins and exposure histories...
  13. doi request reprint Landscape factors and hydrology influence mercury concentrations in wading birds breeding in the Florida Everglades, USA
    Garth Herring
    U S Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA
    Sci Total Environ 458:637-46. 2013
    ..Further, these results suggest that Hg exposure in wading birds is driven by complex relationships between wading bird behavior and life stage, landscape hydrologic patterns, and biogeochemical processes...
  14. doi request reprint Mercury correlations among six tissues for four waterbird species breeding in San Francisco Bay, California, USA
    Collin A Eagles-Smith
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, California 95616, USA
    Environ Toxicol Chem 27:2136-53. 2008
    ..Finally, our results suggest that blood is an excellent, nonlethal predictor of Hg concentrations in internal tissues but that feathers are relatively poor indicators of Hg concentrations in internal tissues...
  15. doi request reprint Mercury bioaccumulation and risk to three waterbird foraging guilds is influenced by foraging ecology and breeding stage
    Collin A Eagles-Smith
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, CA 95616, USA
    Environ Pollut 157:1993-2002. 2009
    ..Our results highlight the importance of habitat and exposure timing, in addition to trophic position, on waterbird Hg bioaccumulation and risk...
  16. pmc Cross-seasonal patterns of avian influenza virus in breeding and wintering migratory birds: a flyway perspective
    Nichola J Hill
    Western Ecological Research Center, San Francisco Bay Estuary Field Station, U S Geological Survey, Vallejo, California, USA
    Vector Borne Zoonotic Dis 12:243-53. 2012
    ..Our findings shed light on how the dynamics of AIV infection of wild bird populations can vary between the two ends of a migratory flyway...
  17. doi request reprint Oxidative stress response of Forster's terns (Sterna forsteri) and Caspian terns (Hydroprogne caspia) to mercury and selenium bioaccumulation in liver, kidney, and brain
    David J Hoffman
    U S Geological Survey, Patuxent Wildlife Research Center, Beltsville, Maryland, USA
    Environ Toxicol Chem 30:920-9. 2011
    ..Our results indicate that THg concentrations induced oxidative stress in terns, and suggest that histopathological, immunological, and behavioral effects may occur in terns as reported in other species...
  18. ncbi request reprint Mercury exposure may suppress baseline corticosterone levels in juvenile birds
    Garth Herring
    U S Geological Survey, Davis Field Station, Western Ecological Research Center, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
    Environ Sci Technol 46:6339-46. 2012
    ....
  19. doi request reprint Rapid changes in small fish mercury concentrations in estuarine wetlands: implications for wildlife risk and monitoring programs
    Collin A Eagles-Smith
    U S Geological Survey, Western Ecological Research Center, Davis Field Station, One Shields Avenue, University of California, Davis, California 95616, USA
    Environ Sci Technol 43:8658-64. 2009
    ..These results illustrate the importance of short-term temporal variation in small fish Hg concentrations for both Hg monitoring programs and assessing wildlife risk...
  20. ncbi request reprint Embryo malposition as a potential mechanism for mercury-induced hatching failure in bird eggs
    Garth Herring
    U S Geological Survey, Davis Field Station, University of California, Davis, One Shields Avenue, Davis, California 95616, USA
    Environ Toxicol Chem 29:1788-94. 2010
    ..We hypothesize that malpositioning of avian embryos may be one reason for mercury-related hatching failure that occurs late in incubation, but further research is needed to elucidate this potential mechanism...
  21. doi request reprint Mercury demethylation in waterbird livers: dose-response thresholds and differences among species
    Collin A Eagles-Smith
    Davis Field Station, Western Ecological Research Center, US Geological Survey, University of California, Davis, California 956161, USA
    Environ Toxicol Chem 28:568-77. 2009
    ..Further, we provide strong evidence for a threshold of approximately 8.5 microg/g dry weight of THg in the liver where demethylation is initiated...
  22. ncbi request reprint Organochlorine and PBDE concentrations in relation to cytochrome P450 activity in livers of Forster's terns (Sterna forsteri) and Caspian terns (Hydroprogne caspia), in San Francisco Bay, California
    Garth Herring
    US Geological Survey, Davis Field Station, Western Ecological Research Center, University of California, One Shields Ave, Davis, CA 95616, USA
    Arch Environ Contam Toxicol 58:863-73. 2010
    ..P450 protein activity was higher in adult Forster's terns than Caspian terns, higher in Central South Bay than in Lower South Bay, and higher in adult Forster's terns than in chicks...
  23. doi request reprint Marsh wrens as bioindicators of mercury in wetlands of Great Salt Lake: do blood and feathers reflect site-specific exposure risk to bird reproduction?
    C Alex Hartman
    US Geological Survey, Western Ecological Research Center, Dixon Field Station, 800 Business Park Drive, Suite D, Dixon, California 95620, United States
    Environ Sci Technol 47:6597-605. 2013
    ....
  24. doi request reprint A nonlethal microsampling technique to monitor the effects of mercury on wild bird eggs
    Katherine R Stebbins
    Patuxent Wildlife Research Center, US Geological Survey, BARC East, Beltsville, Maryland 20705, USA
    Environ Toxicol Chem 28:465-70. 2009
    ....
  25. doi request reprint Density-dependent nest predation in waterfowl: the relative importance of nest density versus nest dispersion
    Kevin M Ringelman
    Department of Wildlife, Fish, and Conservation Biology, University of California, One Shields Ave, Davis, CA 95616, USA
    Oecologia 169:695-702. 2012
    ..We suggest that local nest dispersion, rather than larger-scale measures of nest density per se, may play a more important role in density-dependent nest predation...
  26. ncbi request reprint Waterfowl ecology and avian influenza in California: do host traits inform us about viral occurrence?
    Nichola J Hill
    U S Geological Survey, Western Ecological Research Center, San Francisco Bay Estuary Field Station, Vallejo, CA 94592, USA
    Avian Dis 54:426-32. 2010
    ....
  27. doi request reprint California gull chicks raised near colony edges have elevated stress levels
    Garth Herring
    US Geological Survey, Western Ecological Research Center, Davis Field Station, University of California, Davis, CA 95616, USA
    Gen Comp Endocrinol 173:72-7. 2011
    ..Our results suggest that similarly aged California gull chicks raised near colony edges may be more physiologically stressed, as indicated by corticosterone metabolites, than chicks raised near colony centers...