Chronic oiling of marine birds in California by natural petroleum seeps, shipwrecks, and other sources

Henkel, L. A., Nevins, H., Martin, M., Sugarman, S., Harvey, J. T., & Ziccardi, M. H. (2014). Chronic oiling of marine birds in California by natural petroleum seeps, shipwrecks, and other sources. Marine Pollution Bulletin.
Metadata
TitleChronic oiling of marine birds in California by natural petroleum seeps, shipwrecks, and other sources
AuthorsL. Henkel, H. Nevins, M. Martin, S. Sugarman, J. Harvey, M. Ziccardi
AbstractWe assessed temporal and spatial patterns of chronic oiling of seabirds in California during 2005-2010, using data on: (1) live oiled birds reported to the Oiled Wildlife Care Network (OWCN) from throughout the state, and (2) dead oiled birds found during systematic monthly beached-bird surveys in central California. A mean of 245 (±141 SD) live miscellaneous oiled birds (not associated with known oil spills) were reported to the OWCN per year, and 0.1 oiled dead birds km-1 per month were found on beach surveys in central California. Chemical fingerprinting of oiled feathers from a subset of these birds (n = 101) indicated that 89% of samples tested were likely from natural petroleum seeps off southern and central California. There was a pronounced peak during late winter in the number of oiled birds reported in southern California, which we theorize may be related to large storm waves disturbing underwater seeps. © 2013.
JournalMarine Pollution Bulletin
Date2014
SubjectsMonterey Formation, Oil fingerprinting, Seabirds
NoteMarine Mammals, Birds & Turtles, Article in Press

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