Environmental & Analytical Toxicology

John P Giesy

Publications

• Research Article
  Toxicity of Metals Associated with Sediments from the Columbia River to Early Life Stages of White Sturgeon
  Author(s): David W Vardy, Jon A Doering, Robert Santore, Adam Ryan, John P Giesy and Markus HeckerDavid W Vardy, Jon A Doering, Robert Santore, Adam Ryan, John P Giesy and Markus Hecker
  
  In the Upper Columbia River (UCR) between Trail, BC, and Grand Coulee Dam, WA, it has been hypothesized that metals associated with sediments might be contributing to poor recruitment of white sturgeon. Accordingly, the present study employed laboratory flow-through tests to characterize chronic toxicity of UCR sediments to early life stages of white sturgeon (Acipenser transmontanus). Sediments were collected from areas of the UCR known to be sturgeon spawning- and/or nursing-grounds and contained a range of concentrations of metals of primary interest, including copper (Cu), cadmium (Cd), lead (Pb), and zinc (Zn). Early life stage white sturgeon were exposed for 60 days and survival and growth were related to concentrations of metals in bulk sediment, pore water, overlying water, and water at the sediment-water interface. Based on probable effect concentrations (PECs) and excess sim.. Read More»
  DOI: 10.4172/2161-0525.1000262

  Abstract PDF