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NOAA initiated an area-wide survey of sediment toxicity in 1991 to provide internally-consistent data on the spatial extent and severity of the toxicity. The intent of this survey was to sample all of the major regions within the study area (Hudson-Raritan Estuary, 40 N and 73 - 74 W), collect surficial fine-grained sediments, and determine the degree of toxicity of the sediments to laboratory organisms. Three toxicity tests were performed: a 10-day, solid phase survival test with the amphipod ampelisca abdita, a 48-hour, elutriate/ liquid phase test of development/survival with the larvae of the clam mulinia lateralis, and a 15-minute organic extract test of bioluminescence with the bacterium photobacterium phosphoreum (microtox test). Data obtained from the study "magnitude and extent of sediment toxicity in the Hudson-Raritan Estuary" was submitted in spreadsheet format in Macintosh Excel. The documentation includes details of the stations, methodology, and summary of results. Additional information may be obtained by contacting: the National Status and Trends (NS&amp;T) Program which has monitored the concentrations of selected toxicants in sediments, oysters, and bottom-dwelling fish in Tampa Bay since 1986.

The observation of high concentrations of some chemicals has prompted the NS&amp;T Program to initiate an intensive survey of the biological effects of toxicants in the estuary. NOAA's assessment of the biological effects associated with toxicants in Tampa Bay was initiated with a research plan that involved analyses of three media: sediments, bivalve mollusks, and demersal fish. The sediment toxicity tests were intended to provide information based on laboratory tests in which "natural" factors would be controlled in assessing the significance of the toxicants, and to provide bioeffects information on a small spatial scale. Sediment samples for this study were collected in: Hills- borough Bay, all of Tampa Bay, Boca Ciega Bay, cockroach Bay, Terra Ceia Bay, Manatee River, Anna Maria Sound, St. Petersburg Harbor, Gulfport/Bear Creek, and Charlotte Harbor (i.e., between 27 N and 83 W).

NOAA initiated an area-wide survey of sediment toxicity in 1991 to provide internally-consistent data on the spatial extent and severity of the toxicity. The intent of this survey was to sample all of the major regions within the study area (Newark Bay, and Arthur Kill and Passaic and Hackensack Rivers, 40 N and 75 W), collect surficial fine-grained sediments, and determine the degree of toxicity of the sediments to laboratory organisms these data are the results of the amphipod bioassay (with the amphipod ampelisca abdita), expressed in terms of percent survival. The documentation includes details of the stations, methodology, and summary of results. Additional information may be obtained by contacting: NOAA/ORCA/ Bioeffects Assessment Branch 7600 Sand Point Way NE Seattle, WA 98115.</gco:CharacterString>
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          <gmd:keyword>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/75fab119-51a6-4b59-9711-f6c3cd3139db" xlink:actuate="onRequest">OCEAN &gt; ATLANTIC OCEAN &gt; NORTH ATLANTIC OCEAN &gt; GULF OF MEXICO</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
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            <gco:CharacterString>Cite as: Long, Edward R.; US DOC/NOAA/National Ocean Service - Rockville, MD (2021). Sediment toxicity data from stations in U.S. coastal waters from 1991-03-18 to 1993-03-03 (NCEI Accession 9400004). [indicate subset used]. NOAA National Centers for Environmental Information. Unpublished Dataset. https://www.ncei.noaa.gov/archive/accession/9400004. Accessed [date].</gco:CharacterString>
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            <gco:CharacterString>Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.</gco:CharacterString>
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          </gmd:accessConstraints>
          <gmd:otherConstraints>
            <gco:CharacterString>Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.</gco:CharacterString>
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        <gco:CharacterString>The data were submitted to NODC in MacIntosh Excel spreadsheet files.

Note: Metadata for this accession were extracted from a legacy database maintained by the U.S. National Oceanographic Data Center (NODC). The design of the database did not exactly reflect the FGDC Content Standard for Digital Geospatial Metadata (CSDGM).

Principal Investigator (PI) and organization contact information accurately represents all available information from the legacy database at the time that this description was created. However, proper attribution of a PI to a specific institution or the role (submitting or collecting) taken by an institution may not be correct due to inexact mapping between fields in the legacy database and the CSDGM. Due to this uncertainty, the contact information was initially recorded in the Supplemental Information element of the CSDGM description.

To develop more accurate metadata, NCEI reviews metadata for all accessions on an ongoing basis.

Points of contact for this data set include:
Contact info:
  Agency: US DOC; NOAA; NATIONAL OCEAN SERVICE - ROCKVILLE
  PI: Long, Dr. Edward
  Address:
    address: 6001 EXECUTIVE BLVD.
       city: ROCKVILLE
      state: MD
     postal: NOT AVAILABLE
    country: UNITED STATES</gco:CharacterString>
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                <gco:CharacterString>When requesting analog data from NCEI, the desired dataset should be referred to by the Accession Number listed in this metadata record. Because the contents of this archival information package are analog, you must contact NCEI for assistance in obtaining a copy of these data.</gco:CharacterString>
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                <gmd:CI_OnlineResource>
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                    <gco:CharacterString>HTTPS</gco:CharacterString>
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Generic name for water collection device; usually used to determine temperature, salinity and provide water aliquots for measurement of a wide range of parameters; often referred to by a specific type of water sampling bottle, such as a Nansen or Niskin bottle.</gco:CharacterString>
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