Parent Layer: Contaminant Data

Name: National Status and Trends 2008

Display Field: Study_Name

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Description: In 2008, five sites were sampled in the deeper mainstem of Kachemak Bay, in collaboration with CIRCAC Cook Inlet Environmental Monitoring and Assessment Program. Results of the Kachemak Bay deep sites survey are included in Addendum 6 of Hartwell et al. 2009, pp. 131-163. These results were part of a larger study of Cook Inlet (ICIEMAP 2010), and they supplement the sites sampled in 2007 on the north side of Kachemak Bay. All of the sites were deeper than 18 m, and separate samples were taken to assess the benthic invertebrate community and for analysis of a suite of organic and trace element contaminants. Metals concentrations were generally higher in deep portions of the Bay compared with shallow areas, but some of this may be due to finer sediment grain size at the deep sites. Some metals exceeded threshold sediment quality guidelines, but only nickel exceeded the median effects guideline. Organic contaminants were slightly elevated above concentrations observed in shallow areas, but were well below concentrations in Homer Harbor. The mixture of PAHs and alkanes indicated negligible anthropogenic sources. Pesticides and PCBs were present at very low levels. The benthic invertebrate community at the deep sites was highly diverse and abundant, dominated by polychaetes, and distinctly different from shallow areas. Methods and results are reported in Hartwell et al. 2009 - Addendum 6 (pp. 131-163), available for download as a pdf at https://repository.library.noaa.gov/view/noaa/2628.

Copyright Text: NOAA/NCCOS

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Fields:

• Study_Name ( type: esriFieldTypeString, alias: Study Name, length: 255 )
• StationID ( type: esriFieldTypeString, alias: Station ID, length: 255 )
• Sample_Year ( type: esriFieldTypeDouble, alias: Sample Year )
• LatDD ( type: esriFieldTypeDouble, alias: Latitude )
• LongDD ( type: esriFieldTypeDouble, alias: Longitude )
• General_Location ( type: esriFieldTypeString, alias: General Location, length: 255 )
• Depth_m ( type: esriFieldTypeDouble, alias: Depth (m) )
• Percent_silt_clay ( type: esriFieldTypeDouble, alias: Percent Silt Clay )
• Percent_TOC ( type: esriFieldTypeDouble, alias: Percent TOC )
• Surface_temp_C ( type: esriFieldTypeDouble, alias: Surface Temperature (C) )
• Surface_salinity_ppt ( type: esriFieldTypeDouble, alias: Surface Salinity (ppt) )
• Surface_DO_mg_L ( type: esriFieldTypeDouble, alias: Surface DO (mg\L) )
• Bottom_temp_C ( type: esriFieldTypeDouble, alias: Bottom Temerature (C) )
• Bottom_salinity_ppt ( type: esriFieldTypeDouble, alias: Bottom Salinity (ppt) )
• Bottom_DO_mg_L ( type: esriFieldTypeDouble, alias: Bottom DO (mg\L) )
• Water_clarity_secchi_feet ( type: esriFieldTypeDouble, alias: Water Clarity Secchi (ft) )
• Benthic_number_of_taxa ( type: esriFieldTypeDouble, alias: Benthic Number of Taxa )
• Benthic_density_num_m2 ( type: esriFieldTypeDouble, alias: Benthic Density (num/m2) )
• Benthic_Diversity_H_ ( type: esriFieldTypeDouble, alias: Benthic Diversity (H') )
• Sediment_Ag_ppm ( type: esriFieldTypeDouble, alias: Sediment Ag (ppm) )
• Sediment_As_ppm ( type: esriFieldTypeDouble, alias: Sediment As (ppm) )
• Sediment_Cd_ppm ( type: esriFieldTypeDouble, alias: Sediment Cd (ppm) )
• Sediment_Cr_ppm ( type: esriFieldTypeDouble, alias: Sediment Cr (ppm) )
• Sediment_Cu_ppm ( type: esriFieldTypeDouble, alias: Sediment Cu (ppm) )
• Sediment_Hg_ppm ( type: esriFieldTypeDouble, alias: Sediment Hg (ppm) )
• Sediment_Pb_ppm ( type: esriFieldTypeDouble, alias: Sediment Pb (ppm) )
• Sediment_Ni_ppm ( type: esriFieldTypeDouble, alias: Sediment Ni (ppm) )
• Sediment_Zn_ppm ( type: esriFieldTypeDouble, alias: Sediment Zn (ppm) )
• Metals_notes ( type: esriFieldTypeString, alias: Metals Notes, length: 255 )
• Total_DDT_ppb ( type: esriFieldTypeDouble, alias: Total DDT (ppb) )
• Total_PCBs_ppb ( type: esriFieldTypeDouble, alias: Total PCBs (ppb) )
• Total_PAHs_ppb ( type: esriFieldTypeDouble, alias: Total PAHs (ppb) )
• Organics_notes ( type: esriFieldTypeString, alias: Organics Notes, length: 255 )
• Total_alkanes_ppm ( type: esriFieldTypeDouble, alias: Total Alkanes (ppm) )
• Petroleum_hydrocarbons_ppm ( type: esriFieldTypeDouble, alias: Petroleum Hydrocarbons (ppm) )
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