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Sediment quality triad assessment in Kachemak Bay : characterization of soft bottom benthic habitats and contaminant bioeffects assessment
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2009
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[PDF-6.46 MB]
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Description:"A baseline environmental characterization of the inner Kachemak Bay, Alaska was conducted using the sediment quality triad approach based on sediment chemistry, sediment toxicity, and benthic invertebrate community structure. The study area was subdivided into 5 strata based on geophysical and hydrodynamic patterns in the bay (eastern and western intertidal mud flats, eastern and western subtidal, and Homer Harbor). Three to seven locations were synoptically sampled within each stratum using a stratified random statistical design approach. Three sites near the village of Port Graham and two sites in the footprint of a proposed Homer Harbor expansion were also collected for comparison. Concentrations of over 120 organic and metallic contaminants were analyzed. Ambient toxicity was assessed using two amphipod bioassays. A detailed benthic community condition assessment was performed. Habitat parameters (depth, salinity, temperature, dissolved oxygen, sediment grain size, and organic carbon content) that influence species and contaminant distribution were also measured at each sampling site"--Executive summary.
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Content Notes:S. Ian Hartwell, A. Dennis Apeti, W. Larry Claflin, W. Edward Johnson, and L. Kimani Kimbrough.
"October, 2009."
System requirements: Adobe Acrobat Reader,
Includes bibliographical references (pages 124-130).
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Rights Information:Public Domain
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