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  <dataset>
    <shortName>relcprpr.dat</shortName>
    <title>Algae Primary Productivity in Reactivated Channel</title>
    <creator>
      <individualName>
        <givenName>Diane</givenName>
        <surName>McKnight</surName>
      </individualName>
      <electronicMailAddress>diane.mcknight@colorado.edu</electronicMailAddress>
      <userId directory="https://orcid.org">https://orcid.org/0000-0002-4171-1533</userId>
    </creator>
    <metadataProvider>
      <organizationName>McMurdo Dry Valleys LTER</organizationName>
      <onlineUrl>http://mcmlter.org/</onlineUrl>
    </metadataProvider>
    <pubDate>2015-01-20</pubDate>
    <language>English</language>
    <abstract>
      <section>
        <para>
          <literalLayout>As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, water was diverted to a relict stream channel in order to reactivate the streamflow. The purpose of this experiment was to quantify the time scales of response to the arrival of water after many years of dessication. This data set includes results from light and dark incubations of algae to calculate net and gross primary productivity of algal communities from the Relict Channel in the Fryxell basin.</literalLayout>
        </para>
      </section>
    </abstract>
    <keywordSet>
      <keyword>algae</keyword>
      <keyword>carbon</keyword>
      <keyword>stream</keyword>
      <keywordThesaurus>Station Keywords</keywordThesaurus>
    </keywordSet>
    <keywordSet>
      <keyword>primary production</keyword>
      <keywordThesaurus>LTER Core Areas</keywordThesaurus>
    </keywordSet>
    <intellectualRights>
      <section>
        <title>Data Policies</title>
        <para>
          <literalLayout>This data package is released under the Creative Commons Attribution 4.0 International License (CC BY 4.0; http://creativecommons.org/licenses/by/4.0/), which allows consumers (hereinafter referred to as “Data Users”) to freely reuse, redistribute, transform, or build on this work (even commercially) so long as appropriate credit is provided. Accordingly, Data Users are required to properly cite this data package in any publications or in the metadata of any derived products that result from its use (in whole or in part). A recommended citation is provided on the summary metadata page associated with this data package in the McMurdo Dry Valleys LTER Data Catalog (https://mcmlter.org/data), and a generic citation may be found on the summary metadata page in the repository where this data package was obtained. When these data contribute significantly to the contents of a publication, Data Users must also acknowledge that data were provided by the NSF-supported McMurdo Dry Valleys Long Term Ecological Research program (OPP-2224760). This data package has been released in the spirit of open scientific collaboration. Hence, Data Users are strongly encouraged to consider consultation, collaboration, and/or co-authorship (as appropriate) with the data package creator(s). Data Users should be aware these data may be actively used by others for ongoing research; thus, coordination may be necessary to prevent duplicate publication. Data Users should also recognize that misinterpretation of data may occur if they are used outside the context of the original study. Hence, Data Users are urged to contact the data package creator(s) if they have any questions regarding methodology or results. While substantial efforts are made to ensure the accuracy of this data package (with all its components), complete accuracy cannot be guaranteed. Periodic updates to this data package may occur, and it is the responsibility of Data Users to check for new versions. This data package is made available “as is” and comes with no warranty of accuracy or fitness for use. The creator(s) of this data package and the repository where these data were obtained shall not be liable for any damages resulting from misinterpretation, use, or misuse of these data. Finally, as a professional courtesy, we kindly request Data Users notify the primary contact referenced in the metadata when these data are used in the production of any derivative work or publication. Notification should include an explanation of how the data were used, along with a digital copy of the derived product(s). Thank you.</literalLayout>
        </para>
      </section>
    </intellectualRights>
    <distribution>
      <online>
        <url function="information">https://mcm.lternet.edu/content/algae-primary-productivity-reactivated-channel</url>
      </online>
    </distribution>
    <coverage>
      <geographicCoverage>
        <geographicDescription>Relict Channel at Site_2</geographicDescription>
        <boundingCoordinates>
          <westBoundingCoordinate>163.249588012695</westBoundingCoordinate>
          <eastBoundingCoordinate>163.249588012695</eastBoundingCoordinate>
          <northBoundingCoordinate>-77.622131347656</northBoundingCoordinate>
          <southBoundingCoordinate>-77.622131347656</southBoundingCoordinate>
        </boundingCoordinates>
      </geographicCoverage>
      <geographicCoverage>
        <geographicDescription>On the Stream team data page</geographicDescription>
        <boundingCoordinates>
          <westBoundingCoordinate>163.302963256836</westBoundingCoordinate>
          <eastBoundingCoordinate>163.302963256836</eastBoundingCoordinate>
          <northBoundingCoordinate>-77.632797241211</northBoundingCoordinate>
          <southBoundingCoordinate>-77.632797241211</southBoundingCoordinate>
        </boundingCoordinates>
      </geographicCoverage>
      <geographicCoverage>
        <geographicDescription>Relict Channel at Site_3</geographicDescription>
        <boundingCoordinates>
          <westBoundingCoordinate>163.249588012695</westBoundingCoordinate>
          <eastBoundingCoordinate>163.249588012695</eastBoundingCoordinate>
          <northBoundingCoordinate>-77.615768432617</northBoundingCoordinate>
          <southBoundingCoordinate>-77.615768432617</southBoundingCoordinate>
        </boundingCoordinates>
      </geographicCoverage>
      <temporalCoverage>
        <rangeOfDates>
          <beginDate>
            <calendarDate>1996-01-11</calendarDate>
          </beginDate>
          <endDate>
            <calendarDate>1997-01-15</calendarDate>
          </endDate>
        </rangeOfDates>
      </temporalCoverage>
    </coverage>
    <maintenance>
      <description>
        <para>
          <literalLayout>Data and metadata moved to DEIMS in 2015, to enhance LTER services Data from this table was initially included in the raw data files specified under the variable for 'file name'. These are Microsoft Excel version 6.0 files and can be found in the McMurdo LTER data manager's home directory on INSTAAR's Unix system. Once submitted to INSTAAR, the data manager combined all of the Relict Channel files that included information on primary production, and removed any variables that had no direct influence on the primary productivity of a given algal / incubation type. The resulting file is represented in the "relcprpr.dat" file used on the web page.</literalLayout>
        </para>
      </description>
    </maintenance>
    <contact>
      <organizationName>McMurdo Dry Valleys LTER</organizationName>
      <onlineUrl>http://mcmlter.org/</onlineUrl>
    </contact>
    <publisher>
      <organizationName>McMurdo Dry Valleys LTER</organizationName>
      <onlineUrl>http://mcmlter.org/</onlineUrl>
    </publisher>
    <pubPlace>McMurdo Dry Valleys LTER</pubPlace>
    <methods>
      <methodStep>
        <description>
          <section>
            <para>
              <literalLayout>Within each transect, algal mats were visually identified as either orange, red, black, or green. Not all types of algal mats were found within every transect. Algal samples were collected using a cork borer, placed in either light or dark vials, and incubated in the stream for 3 to 8 hours during sunny conditions. Primary productivity was measured as the change in oxygen concentration in the vial using an oxygen electrode. Net primary productivity (NPP, light bottles) and community respiration (CR, dark bottles) were calculated as follows: NPP or CR (ug C/cm2/hr)=((change in mg O2/L x v) x 0.375 C/O2 x 1000 ug/mg)/area/hours incubated, where O2/L = change in oxygen concentration, v = volume of vial (liters), C/O2 = atom/atom conversion of oxygen to carbon, area = area of cork borer (cm2).</literalLayout>
            </para>
          </section>
        </description>
      </methodStep>
    </methods>
    <dataTable>
      <entityName>relcprpr</entityName>
      <physical>
        <objectName>relcprpr.csv</objectName>
        <size>18113</size>
        <dataFormat>
          <textFormat>
            <numHeaderLines>1</numHeaderLines>
            <numFooterLines>0</numFooterLines>
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            <attributeOrientation>column</attributeOrientation>
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              <quoteCharacter>"</quoteCharacter>
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        <distribution>
          <online>
            <url>https://mcm.lternet.edu/sites/default/files/relcprpr.csv</url>
          </online>
        </distribution>
      </physical>
      <attributeList>
        <attribute>
          <attributeName>Dataset code</attributeName>
          <attributeLabel>Dataset code</attributeLabel>
          <attributeDefinition>Code representing Relict Channel experiment locations dataset</attributeDefinition>
          <storageType>string</storageType>
          <measurementScale>
            <nominal>
              <nonNumericDomain>
                <textDomain>
                  <definition>Code representing Relict Channel experiment locations dataset</definition>
                </textDomain>
              </nonNumericDomain>
            </nominal>
          </measurementScale>
        </attribute>
        <attribute>
          <attributeName>Location Code</attributeName>
          <attributeLabel>Location Code</attributeLabel>
          <attributeDefinition>Abbreviated Location</attributeDefinition>
          <storageType>string</storageType>
          <measurementScale>
            <nominal>
              <nonNumericDomain>
                <textDomain>
                  <definition>Abbreviated Location</definition>
                </textDomain>
              </nonNumericDomain>
            </nominal>
          </measurementScale>
        </attribute>
        <attribute>
          <attributeName>DATE_TIME</attributeName>
          <attributeLabel>DATE_TIME</attributeLabel>
          <attributeDefinition>Date of sample</attributeDefinition>
          <storageType>date</storageType>
          <measurementScale>
            <dateTime>
              <formatString>mm/dd/YYYY</formatString>
            </dateTime>
          </measurementScale>
          <missingValueCode>
            <code>Required entry</code>
            <codeExplanation>None given</codeExplanation>
          </missingValueCode>
        </attribute>
        <attribute>
          <attributeName>Algae Type</attributeName>
          <attributeLabel>Algae Type</attributeLabel>
          <attributeDefinition>The type of algae species that is associated with the sample (red, black, green or orange)</attributeDefinition>
          <storageType>string</storageType>
          <measurementScale>
            <nominal>
              <nonNumericDomain>
                <textDomain>
                  <definition>The type of algae species that is associated with the sample (red, black, green or orange)</definition>
                </textDomain>
              </nonNumericDomain>
            </nominal>
          </measurementScale>
        </attribute>
        <attribute>
          <attributeName>Incubation Type</attributeName>
          <attributeLabel>Incubation Type</attributeLabel>
          <attributeDefinition>Light vs. dark incubation</attributeDefinition>
          <storageType>string</storageType>
          <measurementScale>
            <nominal>
              <nonNumericDomain>
                <textDomain>
                  <definition>Light vs. dark incubation</definition>
                </textDomain>
              </nonNumericDomain>
            </nominal>
          </measurementScale>
        </attribute>
        <attribute>
          <attributeName>REPLICATE #</attributeName>
          <attributeLabel>Replicate Number</attributeLabel>
          <attributeDefinition>Replication number of sample</attributeDefinition>
          <storageType>string</storageType>
          <measurementScale>
            <nominal>
              <nonNumericDomain>
                <textDomain>
                  <definition>Replication number of sample</definition>
                </textDomain>
              </nonNumericDomain>
            </nominal>
          </measurementScale>
        </attribute>
        <attribute>
          <attributeName>Change CO2 Over Time</attributeName>
          <attributeLabel>Change in CO2 over time</attributeLabel>
          <attributeDefinition>CO2 change (mg/cm2/hrCO2) in a given hour</attributeDefinition>
          <measurementScale>
            <ratio>
              <unit>
                <customUnit>mg/cm2/hr</customUnit>
              </unit>
              <numericDomain>
                <numberType>real</numberType>
              </numericDomain>
            </ratio>
          </measurementScale>
        </attribute>
        <attribute>
          <attributeName>Change CO2 Per AFDM</attributeName>
          <attributeLabel>Change in CO2 per AFDM</attributeLabel>
          <attributeDefinition>Change in level of CO2 per gram of ash free dry mass in a given hour</attributeDefinition>
          <measurementScale>
            <ratio>
              <unit>
                <customUnit>mgC/gAFDM/hr</customUnit>
              </unit>
              <numericDomain>
                <numberType>real</numberType>
              </numericDomain>
            </ratio>
          </measurementScale>
        </attribute>
        <attribute>
          <attributeName>Change CO2 Per CHL-A</attributeName>
          <attributeLabel>Change in CO2 per Chl a</attributeLabel>
          <attributeDefinition>Change in level of CO2 per mg of chlorophyll a in a given hour</attributeDefinition>
          <measurementScale>
            <ratio>
              <unit>
                <customUnit>mgC/mgchla/hr</customUnit>
              </unit>
              <numericDomain>
                <numberType>real</numberType>
              </numericDomain>
            </ratio>
          </measurementScale>
          <missingValueCode>
            <code>n/a</code>
            <codeExplanation>None given</codeExplanation>
          </missingValueCode>
        </attribute>
        <attribute>
          <attributeName>File Name</attributeName>
          <attributeLabel>File Name</attributeLabel>
          <attributeDefinition>Raw data file containing information</attributeDefinition>
          <storageType>string</storageType>
          <measurementScale>
            <nominal>
              <nonNumericDomain>
                <textDomain>
                  <definition>Raw data file containing information</definition>
                </textDomain>
              </nonNumericDomain>
            </nominal>
          </measurementScale>
        </attribute>
      </attributeList>
    </dataTable>
  </dataset>
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