National Status and Trends: Bioeffects Program - Kachemak Bay Database

Description

This study was based on the sediment quality triad (SQT) approach. A stratified probabilistic sampling design was utilized to characterize the Kachemak Bay system in terms of chemical contamination, sediment toxicity and benthic infaunal community structure. The purpose was to define the extent and magnitude of toxicity and other biological effects associated with contaminants in the Kachemak Bay system. Five strata (Homer harbor, Western intertidal, Western subtidal, Eastern intertidal, and Eastern subtidal) were established in the shallow (less than 10 fathoms) northern area of the bay. Sediment samples were collected at multiple stations in each strata. A broad suite of sediment contaminants were analyzed at each station, including polynuclear aromatic hydrocarbons (PAHs), chlorinated pesticides including DDT and its metabolites, polychlorinated biphenyls (PCBs), trace elements, and butyl-tins Other parameters included grain size analysis, total organic/inorganic carbon (TOC/TIC), and percent solids. Characterization of infaunal assemblages and the abundance of organisms present in sediments provide additional information to help determine areas of degraded sediments. Whole sediment toxicity bioassays with two species of amphipod were conducted to test for overt contaminant toxicity. This project provides invaluable baseline data on sediment infauna species richness, chemical contamination and toxicity that is georeferenced and posted on the internet through the NOAA's National Status and Trends data portal.

Resources

Name Format Description Link
0 Live Data and Maps https://products.coastalscience.noaa.gov/collections/ltmonitoring/nsandt/default.aspx
33 NOAA Data Management Plan for this record on InPort. https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/nccos/dmp/pdf/38758.pdf
0 View the complete metadata record on InPort for more information about this dataset. https://www.fisheries.noaa.gov/inport/item/38758
0 Online Resource https://products.coastalscience.noaa.gov/collections/ltmonitoring/nsandt/default.aspx
0 Online Resource https://coastalscience.noaa.gov/projects/detail?key=235
0 Live Data and Maps https://products.coastalscience.noaa.gov/collections/ltmonitoring/nsandt/default.aspx
0 Global Change Master Directory (GCMD). 2024. GCMD Keywords, Version 19. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords

Tags

  • analytes
  • location
  • alaska
  • latitude
  • nccos research priority
  • nccos research location
  • nccos research topic
  • pcb
  • benthic
  • date
  • national ocean service
  • national centers for coastal ocean science
  • polynuclear aromatic hydrocarbons
  • longitude
  • and restoration (simr)
  • toxicity
  • station
  • environmental monitoring
  • geographic area
  • noaa
  • chemical
  • kachemak bay
  • bioassay
  • long-term monitoring
  • infauna
  • tbt
  • u.s. department of commerce
  • estuary
  • pah
  • monitoring
  • organic
  • nccos research data type
  • stressors
  • region
  • doc/noaa/nos/nccos
  • butyltins
  • sediment
  • pesticides
  • polychlorinated biphenyls
  • parameter
  • state
  • bioeffects/toxicity
  • site
  • u.s. states and territories
  • coastal ocean
  • organochlorines
  • chemical contaminants
  • nsandt
  • inorganic
  • field observation
  • impacts
  • mitigation
  • amphipod
  • contaminants

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