National Status and Trends: Bioeffects Program - Kachemak Bay Database

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File Identifier: gov.noaa.nmfs.inport:38758

Metadata Language: English

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Resource Type: Dataset

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Organisation Name: National Centers for Coastal Ocean Science

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Position Name: NCCOS Scientific Data Coordinator

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E-Mail Address: NCCOS.data@noaa.gov

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Metadata Standard Name: ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data

Metadata Standard Version: ISO 19115-2:2009(E)

Abstract: 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.

Purpose: Specific objectives of the study were to: 1. Describe the concentrations and spatial distribution of contaminants in the Kachemak Bay estuary; 2. Characterize benthic macroinvertebrate community in terms of species richness, abundance, and characteristics of the benthic infaunal community in Kachemak Bay; 3. Describe the incidence, severity and spatial extent of toxicity in Kachemak Bay; 4. Describe the study results in relation to known or suspected sources of contamination; 5. Describe statistical relationships between levels of contaminants and adverse biological effects, and identify chemicals of concern in terms of regional environmental quality and adverse biological effects; 6. Compare environmental conditions within sub-areas of Kachemak Bay and compare estimates of toxicity in Kachemak Bay with those in other estuaries based on comparable data. The dataset objective is to report information about chemical residues in sediment, sediment toxicity, and benthic infauna characteristics of the system.

Language: eng; US

Citation:

Title: National Status and Trends: Bioeffects Program - Kachemak Bay Database

Alternate Title: KB1_metadata

Date:

Date: 2008-04-25

Date Type: Publication Date

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Individual Name: Piniak, Greg

Role: Principal Investigator

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E-Mail Address: greg.piniak@noaa.gov

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Online Resource: https://products.coastalscience.noaa.gov/collections/ltmonitoring/nsandt/default.aspx

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Online Resource: https://coastalscience.noaa.gov/projects/detail?key=235

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Position Name: NCCOS Scientific Data Coordinator

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E-Mail Address: NCCOS.data@noaa.gov

Position Name: NCCOS Scientific Data Coordinator

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E-Mail Address: NCCOS.data@noaa.gov

Topic Category: Biology and Ecology

Keyword Collection:

Keyword: Environmental Monitoring

Associated Thesaurus: NOS Data Explorer Topic Category

Keyword: amphipod

Keyword: analytes

Keyword: benthic

Keyword: bioassay

Keyword: butyltins

Keyword: chemical

Keyword: chemical

Keyword: contaminants

Keyword: date

Keyword: estuary

Keyword: infauna

Keyword: inorganic

Keyword: latitude

Keyword: location

Keyword: longitude

Keyword: NCCOS Research Data Type > Field Observation

Keyword: NCCOS Research Priority > Long-term Monitoring

Keyword: NCCOS Research Priority > Stressors

Keyword: Impacts

Keyword: Mitigation

Keyword: and Restoration (SIMR)

Keyword: NCCOS Research Topic > Bioeffects/Toxicity

Keyword: NCCOS Research Topic > Chemical Contaminants

Keyword: NCCOS Research Topic > Monitoring

Keyword: organic

Keyword: organochlorines

Keyword: PAH

Keyword: parameter

Keyword: PCB

Keyword: pesticides

Keyword: polychlorinated biphenyls

Keyword: polynuclear aromatic hydrocarbons

Keyword: region

Keyword: sediment

Keyword: sediment

Keyword: Site

Keyword: state

Keyword: station

Keyword: TBT

Keyword: toxicity

Keyword: Alaska

Keyword: Kachemak Bay

Keyword: NCCOS Research Location > Geographic Area > Coastal Ocean

Keyword: NCCOS Research Location > Region > Alaska

Keyword: NCCOS Research Location > U.S. States and Territories > Alaska

Keyword: DOC/NOAA/NOS/NCCOS > National Centers for Coastal Ocean Science, National Ocean Service, NOAA, U.S. Department of Commerce

Associated Thesaurus: Global Change Master Directory (GCMD) Data Center Keywords

Keyword: NSandT

Associated Thesaurus: InPort

Spatial Extent:

West Bounding Longitude: -151.4802

East Bounding Longitude: -150.9416

North Bounding Latitude: 59.9416

South Bounding Latitude: 59.6324

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