National Status and Trends: Bioeffects Program - Kachemak Bay Database
KB1_metadata
eng
Dataset
biota
environment
Environmental Monitoring
NCCOS Research Data Type > Field Observation
NCCOS Research Priority > Long-term Monitoring
NCCOS Research Priority > Stressors, Impacts, Mitigation, and Restoration (SIMR)
NCCOS Research Topic > Bioeffects/Toxicity
NCCOS Research Topic > Chemical Contaminants
NCCOS Research Topic > Monitoring
PAH
PCB
Site
TBT
amphipod
analytes
benthic
bioassay
butyltins
chemical
contaminants
date
estuary
infauna
inorganic
latitude
location
longitude
organic
organochlorines
parameter
pesticides
polychlorinated biphenyls
polynuclear aromatic hydrocarbons
region
sediment
state
station
toxicity
Alaska
Kachemak Bay
NCCOS Research Location > Geographic Area > Coastal Ocean
NCCOS Research Location > Region > Alaska
NCCOS Research Location > U.S. States and Territories > Alaska
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.
National Centers for Coastal Ocean Science
National Centers for Coastal Ocean Science
https://www.fisheries.noaa.gov/inport/item/38758
https://www.fisheries.noaa.gov/inport/item/37215
northlimit=59.9416;
eastlimit=-150.9416;
southlimit=59.6324;
westlimit=-151.4802;
2007
None
2008-04-25