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Ecology and Evolution

D-Index
50
Citations
7996
World Ranking
3901
National Ranking
1360

Overview

Todd M. O'Hara is affiliated with the University of Alaska Fairbanks in the United States. Their research primarily focuses on environmental science, with a strong emphasis on health, toxicology, and mutagenesis. Their work also spans ecology, nature and landscape conservation, oceanography, and atmospheric science.

Their research interests cover several specific topics, including:

  • Mercury impact and mitigation studies
  • Marine animal studies overview
  • Isotope analysis in ecology
  • Ichthyology and marine biology
  • Heavy metal exposure and toxicity
  • Ocean acidification effects and responses
  • Toxic organic pollutants impact

O'Hara has published extensively in journals such as The Science of The Total Environment, Marine Pollution Bulletin, and The Journal of Cetacean Research and Management (Special Issue). Other venues include the SSRN Electronic Journal and Environmental Toxicology and Chemistry.

Some of their recent publications include:

  • "Methyl mercury (MeHg) in vitro exposure alters mitogen-induced lymphocyte proliferation and cytokine expression in Steller sea lion (Eumetopias jubatus) pups" (2020, The Science of The Total Environment)
  • "Regional variations and drivers of mercury and selenium concentrations in Steller sea lions" (2020, The Science of The Total Environment)
  • "Contributions and perspectives of Indigenous Peoples to the study of mercury in the Arctic" (2022, The Science of The Total Environment)
  • "Sexual maturation in male bowhead whales (Balaena mysticetus) of the Bering-Chukchi-Beaufort Seas stock" (2023, The Journal of Cetacean Research and Management, Special Issue)
  • "Assessment of clinical outcomes associated with mercury concentrations in harbor seal pups (Phoca vitulina richardii) in central California" (2020, The Science of The Total Environment)

Frequent co-authors in their research include:

  • Lorrie D. Rea
  • J. Margaret Castellini
  • Brian S. Fadely
  • Daniela A. Murillo-Cisneros
  • Stephanie G. Crawford

Best Publications

  • What are the toxicological effects of mercury in Arctic biota

    Rune Dietz;Christian Sonne;Niladri Basu;Birgit Braune

  • Age and growth estimates of bowhead whales (Balaena mysticetus) via aspartic acid racemization

    John C George;Jeffrey Bada;Judith Zeh;Laura Scott

  • Effects of climate change on Arctic marine mammal health.

    Kathy A. Burek;Frances M. D. Gulland;Todd M. O'Hara

  • Trophic transfer of persistent organochlorine contaminants (OCs) within an Arctic marine food web from the southern Beaufort-Chukchi Seas.

    P.F. Hoekstra;T.M. O'Hara;A.T. Fisk;K. Borgå

  • Trophic relationships in an Arctic food web and implications for trace metal transfer

    Larissa-A. Dehn;Erich H. Follmann;Dana L. Thomas

  • Feeding ecology of phocid seals and some walrus in the Alaskan and Canadian Arctic as determined by stomach contents and stable isotope analysis

    Larissa-A. Dehn;Erich H. Follmann;Lawrence K. Duffy

  • Variation in winter diet of southern Beaufort Sea polar bears inferred from stable isotope analysis

    T.W. Bentzen;Erich H. Follmann;Steven C. Amstrup;G.S. York

  • The potential impact of climate change on infectious diseases of Arctic fauna

    Michael J. Bradley;Susan J. Kutz;Emily Jenkins;Todd M. O’Hara

  • Persistent organochlorine pollutants in ringed seals and polar bears collected from northern Alaska.

    John R Kucklick;William D.J Struntz;Paul R Becker;Geoff W York

  • Concentrations and interactions of selected essential and non-essential elements in bowhead and beluga whales of arctic Alaska.

    Victoria M. Woshner;Todd M. O'Hara;Gerald R. Bratton;Robert S. Suydam

  • Organochlorine contaminant exposure and associations with hematological and humoral immune functional assays with dam age as a factor in free-ranging northern fur seal pups (Callorhinus ursinus).

    Kimberlee B. Beckmen;John E. Blake;Gina M. Ylitalo;Jeffrey L. Stott

  • Trophic ecology of bowhead whales (Balaena mysticetus) compared with that of other arctic marine biota as interpreted from carbon-, nitrogen-, and sulfur-isotope signatures

    P. F. Hoekstra;L. A. Dehn;J. C. George;K. R. Solomon

  • Trace elements in tissues of phocid seals harvested in the Alaskan and Canadian Arctic: influence of age and feeding ecology

    Larissa-A Dehn;Erich H Follmann;Lawrence K Duffy

  • Factors affecting organochlorine contaminant concentrations in milk and blood of northern fur seal (Callorhinus ursinus) dams and pups from St. George Island, Alaska

    Kimberlee B. Beckmen;Gina M. Ylitalo;Rodney G. Towell;Margaret M. Krahn

  • Mercury, selenium and fish oils in marine food webs and implications for human health.

    Matthew O. Gribble;Roxanne Karimi;Beth J. Feingold;Jennifer F. Nyland

  • Morbillivirus and Toxoplasma exposure and association with hematological parameters for southern Beaufort Sea polar bears: potential response to infectious agents in a sentinel species.

    Cassandra M. Kirk;Steven C. Amstrup;Rhonda Swor;Darce Holcomb

  • Stable isotope and trace element status of subsistence-hunted bowhead and beluga whales in Alaska and gray whales in Chukotka

    Larissa-A. Dehn;Erich H. Follmann;Cheryl Rosa;Lawrence K. Duffy

  • Oxidative stress indicators and trace elements in the blue shark (Prionace glauca) off the east coast of the Mexican Pacific Ocean.

    Angélica Barrera-García;Todd O'Hara;Felipe Galván-Magaña;Lía C. Méndez-Rodríguez

  • Mercury and Selenium in Blood and Epidermis of Bottlenose Dolphins (Tursiops truncatus) from Sarasota Bay, FL: Interaction and Relevance to Life History and Hematologic Parameters

    Victoria Woshner;Katrina Knott;Randall Wells;Carla Willetto

  • Concentrations and interactions of selected essential and non-essential elements in ringed seals and polar bears of arctic Alaska.

    Victoria M. Woshner;Todd M. O'Hara;Gerald R. Bratton;Val R. Beasley

  • Trace element concentrations in the Pacific harbor seal (Phoca vitulina richardii) in central and northern California

    Tiffini J. Brookens;James T. Harvey;Todd M. O'Hara

Frequent Co-Authors

Derek C. G. Muir
Derek C. G. Muir Environment and Climate Change Canada
Felipe Galván-Magaña
Felipe Galván-Magaña Instituto Politécnico Nacional
Keith R. Solomon
Keith R. Solomon University of Guelph
Gina M. Ylitalo
Gina M. Ylitalo National Oceanic and Atmospheric Administration
Frances M. D. Gulland
Frances M. D. Gulland University of California, Davis
Steven C. Amstrup
Steven C. Amstrup United States Geological Survey
Randall S. Wells
Randall S. Wells Chicago Zoological Society
Sean Backus
Sean Backus Environment and Climate Change Canada
Margaret M. Krahn
Margaret M. Krahn National Oceanic and Atmospheric Administration
Matthew J. Wooller
Matthew J. Wooller University of Alaska Fairbanks

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