TY - RPRT TI - The relationship between vessel traffic and noise levels received by killer whales ( Orcinus orca ) AU - Juliana Houghton AU - Marla M. Holt AU - Deborah A. Giles AU - M. Bradley Hanson AU - Candice K. Emmons AU - Jeffrey T. Hogan AU - Trevor A. Branch AU - Glenn R. VanBlaricom PY - 2015 DO - 10.1371/journal.pone.0140119 UR - https://pubs.usgs.gov/publication/70173493 ID - 70173493 ER -