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            <gco:CharacterString>Cite this dataset as: Sorte, C., Bracken, M., Kroeker, K., Miller, L. P. (2021) Attributes of 36 tide pools measured in the light and dark at John Brown’s Beach, Sitka, Alaska, USA during 2018-2020. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-09-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.860506.1 [access date]</gco:CharacterString>
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        <gco:CharacterString>Tide pool attributes measured in the light and dark at John Brown’s Beach, Sitka, Alaska, USA Dataset Description:  Methods and Sampling: &amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Sampling and Analytical Procedures:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
This study was conducted on a set of tide pools on a rocky shoreline at John Brown's Beach (57.05 N, 135.37 W), near Sitka, Alaska, USA. We selected 36 tide pools for the light/dark incubation experiments during the first year of the experiment (2018), and sampled sets of those 36 pools in the following two years. The light/dark incubation trial method is separated into three phases: initial, dark, and recovery. We recorded the time that each measurement was taken throughout the experiment. Dates and times are recorded in local Alaska Standard / Alaska Daylight Time. Refer to the attached Supplemental File &amp;quot;&amp;lt;a href=&amp;quot;https://datadocs.bco-dmo.org/docs/305/Sitka_CO2_and_Temp_Expt/data_docs/Tide_Pool_Characteristics.csv&amp;quot; target=&amp;quot;_blank&amp;quot;&amp;gt;Tide_Pool_Characteristics.csv&amp;lt;/a&amp;gt;&amp;quot; for additional data characterizing each tide pool (e.g maximum depth, perimeter, volume, etc.)&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;We began each phase with a set of &amp;quot;ocean&amp;quot; measurements, which were collected from shallow (&amp;amp;lt;0.5m) water adjacent to the shoreline. We measured salinity, dissolved oxygen, temperature, pH, and light (just below the water's surface). During the remainder of the initial phase, we visited each tide pool and measured salinity, dissolved oxygen, temperature, pH, and light (just below the water's surface in the center of the pool). We then secured an opaque black plastic tarp over the tide pool for a duration of 30-45 minutes.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;We revisited each pool after this dark incubation period and repeated the salinity, dissolved oxygen, temperature, and pH measurements prior to removing the tarp. We then removed the tarp to measure light. We allowed each pool to recover, un-covered, for another 30-45 minute period before collecting a third round of measurements of salinity, dissolved oxygen, temperature, pH, and light.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Known Problems/Issues:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
There are small gaps in the data, primarily from light measurements which were not collected in the field during some sampling periods. These gaps in the data include the absence of light measurements for the ocean in the initial and dark phases on 7/1/18, the absence of light measurements from the dark phase on 1/18/19, the absence of any ocean measurements for the initial and dark phases on 8/5/19, and the absence of a recovery phase light measurement in pools 29-32 and the ocean on 6/27/20.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;There were also a pair of tide pools (22 and 23) in the original 36 which were connected, preventing accurate volume measurements from being taken.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Related References:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
The light/dark incubation method is also outlined in the methods of&amp;lt;em&amp;gt; Warming and Elevated CO2 Interact to Drive Rapid Shifts in Marine Community Production&amp;lt;/em&amp;gt; (Sorte and Bracken, 2015) and &amp;lt;em&amp;gt;Assessment of a field incubation method estimating primary productivity in rockpool communities&amp;lt;/em&amp;gt; (Noel et al., 2010).&amp;amp;nbsp;The multipoint calibration protocol used with the Hanna Instruments 9829 Multiparameter Meter is thoroughly described in SOP 6a in the &amp;lt;em&amp;gt;Guide to Best Practices for Ocean CO2 Measurements&amp;lt;/em&amp;gt; (Dickson, Sabine &amp;amp;amp; Christian, 2007).&amp;lt;/p&amp;gt;</gco:CharacterString>
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        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/752681.rdf" xlink:title="OCE-1756173" xlink:actuate="onRequest">Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756173 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756173</gmx:Anchor>
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        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/752692.rdf" xlink:title="OCE-1756208" xlink:actuate="onRequest">Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756208 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756208</gmx:Anchor>
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        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/752696.rdf" xlink:title="OCE-1756216" xlink:actuate="onRequest">Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1756216 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1756216</gmx:Anchor>
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        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/752699.rdf" xlink:title="OCE-1904185" xlink:actuate="onRequest">Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1904185 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1904185</gmx:Anchor>
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	Name: Pool_ID
	Units: unitless
	Description: &lt;p&gt;The number assigned to each tide pool.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860521.rdf
	Name: Latitude
	Units: degrees North
	Description: &lt;p&gt;The latitude of each tide pool.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860522.rdf
	Name: Longitude
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http://lod.bco-dmo.org/id/dataset-parameter/860523.rdf
	Name: Date
	Units: unitless
	Description: &lt;p&gt;The date when the data were collected (local Alaska Standard / Alaska Daylight Time). Format: YYYY-MM-DD&lt;/p&gt; 
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	Name: Initial_Light
	Units: micromoles per square meter per hour (umol/m2*hr)
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http://lod.bco-dmo.org/id/dataset-parameter/860525.rdf
	Name: Initial_Salinity
	Units: PSU
	Description: &lt;p&gt;Salinity (in Practical Salinity Units) measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860526.rdf
	Name: Initial_Dissolved_Oxygen
	Units: milligrams per liter (mg/L)
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http://lod.bco-dmo.org/id/dataset-parameter/860527.rdf
	Name: Initial_Temperature
	Units: degrees Celsius
	Description: &lt;p&gt;Temperature measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860528.rdf
	Name: Initial_pH
	Units: millivolts (mV)
	Description: &lt;p&gt;pH measured with a Hanna Instruments 9829 Multiparameter Meter (Hanna Instruments, Smithfield, Rhode Island, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860529.rdf
	Name: Initial_Time
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http://lod.bco-dmo.org/id/dataset-parameter/860530.rdf
	Name: Dark_Light
	Units: micromoles per square meter per hour (umol/m2*hr)
	Description: &lt;p&gt;Light measured with a MQ-210 Underwater Quantum Meter (Apogee, Logan, Utah, USA), measured in the center of the tide pool ~1cm below water surface.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860531.rdf
	Name: Dark_Salinity
	Units: PSU
	Description: &lt;p&gt;Salinity (in Practical Salinity Units) measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860532.rdf
	Name: Dark_Dissolved_Oxygen
	Units: milligrams per liter (mg/L)
	Description: &lt;p&gt;Dissolved oxygen measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860533.rdf
	Name: Dark_Temperature
	Units: degrees Celsius
	Description: &lt;p&gt;Temperature measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860534.rdf
	Name: Dark_pH
	Units: millivolts (mV)
	Description: &lt;p&gt;pH measured with a Hanna Instruments 9829 Multiparameter Meter (Hanna Instruments, Smithfield, Rhode Island, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860535.rdf
	Name: Dark_Time
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	Description: &lt;p&gt;The time when the data were collected (local Alaska Standard / Alaska Daylight Time). Format: hh:mm&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860536.rdf
	Name: Recovery_Light
	Units: micromoles per square meter per hour (umol/m2*hr)
	Description: &lt;p&gt;Light measured with a MQ-210 Underwater Quantum Meter (Apogee, Logan, Utah, USA), measured in the center of the tide pool ~1cm below water surface.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860537.rdf
	Name: Recovery_Salinity
	Units: PSU
	Description: &lt;p&gt;Salinity (in Practical Salinity Units) measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860538.rdf
	Name: Recovery_Dissolved_Oxygen
	Units: milligrams per liter (mg/L)
	Description: &lt;p&gt;Dissolved oxygen measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860539.rdf
	Name: Recovery_Temperature
	Units: degrees Celsius
	Description: &lt;p&gt;Temperature measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860540.rdf
	Name: Recovery_pH
	Units: millivolts (mV)
	Description: &lt;p&gt;pH measured with a Hanna Instruments 9829 Multiparameter Meter (Hanna Instruments, Smithfield, Rhode Island, USA).&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/860541.rdf
	Name: Recovery_Time
	Units: unitless
	Description: &lt;p&gt;The time when the data were collected (local Alaska Standard / Alaska Daylight Time). Format: hh:mm&lt;/p&gt; 
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                <gco:CharacterString>&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Sampling and Analytical Procedures:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
This study was conducted on a set of tide pools on a rocky shoreline at John Brown's Beach (57.05 N, 135.37 W), near Sitka, Alaska, USA. We selected 36 tide pools for the light/dark incubation experiments during the first year of the experiment (2018), and sampled sets of those 36 pools in the following two years. The light/dark incubation trial method is separated into three phases: initial, dark, and recovery. We recorded the time that each measurement was taken throughout the experiment. Dates and times are recorded in local Alaska Standard / Alaska Daylight Time. Refer to the attached Supplemental File &amp;quot;&amp;lt;a href=&amp;quot;https://datadocs.bco-dmo.org/docs/305/Sitka_CO2_and_Temp_Expt/data_docs/Tide_Pool_Characteristics.csv&amp;quot; target=&amp;quot;_blank&amp;quot;&amp;gt;Tide_Pool_Characteristics.csv&amp;lt;/a&amp;gt;&amp;quot; for additional data characterizing each tide pool (e.g maximum depth, perimeter, volume, etc.)&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;We began each phase with a set of &amp;quot;ocean&amp;quot; measurements, which were collected from shallow (&amp;amp;lt;0.5m) water adjacent to the shoreline. We measured salinity, dissolved oxygen, temperature, pH, and light (just below the water's surface). During the remainder of the initial phase, we visited each tide pool and measured salinity, dissolved oxygen, temperature, pH, and light (just below the water's surface in the center of the pool). We then secured an opaque black plastic tarp over the tide pool for a duration of 30-45 minutes.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;We revisited each pool after this dark incubation period and repeated the salinity, dissolved oxygen, temperature, and pH measurements prior to removing the tarp. We then removed the tarp to measure light. We allowed each pool to recover, un-covered, for another 30-45 minute period before collecting a third round of measurements of salinity, dissolved oxygen, temperature, pH, and light.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Known Problems/Issues:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
There are small gaps in the data, primarily from light measurements which were not collected in the field during some sampling periods. These gaps in the data include the absence of light measurements for the ocean in the initial and dark phases on 7/1/18, the absence of light measurements from the dark phase on 1/18/19, the absence of any ocean measurements for the initial and dark phases on 8/5/19, and the absence of a recovery phase light measurement in pools 29-32 and the ocean on 6/27/20.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;There were also a pair of tide pools (22 and 23) in the original 36 which were connected, preventing accurate volume measurements from being taken.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Related References:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
The light/dark incubation method is also outlined in the methods of&amp;lt;em&amp;gt; Warming and Elevated CO2 Interact to Drive Rapid Shifts in Marine Community Production&amp;lt;/em&amp;gt; (Sorte and Bracken, 2015) and &amp;lt;em&amp;gt;Assessment of a field incubation method estimating primary productivity in rockpool communities&amp;lt;/em&amp;gt; (Noel et al., 2010).&amp;amp;nbsp;The multipoint calibration protocol used with the Hanna Instruments 9829 Multiparameter Meter is thoroughly described in SOP 6a in the &amp;lt;em&amp;gt;Guide to Best Practices for Ocean CO2 Measurements&amp;lt;/em&amp;gt; (Dickson, Sabine &amp;amp;amp; Christian, 2007).&amp;lt;/p&amp;gt;</gco:CharacterString>
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                <gco:CharacterString>&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Data Processing:&amp;amp;nbsp;&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
Data were collected on data sheets in the field and entered into an Excel spreadsheet, where the data were later double-checked against the original data sheets to ensure transfer accuracy.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;BCO-DMO Processing:&amp;lt;/strong&amp;gt;&amp;lt;br /&amp;gt;
- joined the Latitude and Longitude columns to the Productivity data from the &amp;quot;Pool_Characteristics&amp;quot; sheet in the original Exel file, matching on Pool_ID field;&amp;lt;br /&amp;gt;
- converted date to YYYY-MM-DD format;&amp;lt;br /&amp;gt;
- exported the &amp;quot;Pool_Characteristics&amp;quot; sheet as a .csv file.&amp;lt;/p&amp;gt;</gco:CharacterString>
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				    <gco:CharacterString>Woods Hole</gco:CharacterString>
				  </gmd:city>
				  <gmd:administrativeArea>
				    <gco:CharacterString>MA</gco:CharacterString>
				  </gmd:administrativeArea>
				  <gmd:postalCode>
				    <gco:CharacterString>02543</gco:CharacterString>
				  </gmd:postalCode>
				  <gmd:country>
				    <gco:CharacterString>USA</gco:CharacterString>
				  </gmd:country>
				  <gmd:electronicMailAddress>
				    <gco:CharacterString>info@bco-dmo.org</gco:CharacterString>
				  </gmd:electronicMailAddress>
		    </gmd:CI_Address>
		  </gmd:address>
      <gmd:onlineResource>
          <gmd:CI_OnlineResource>
            <gmd:linkage>
              <gmd:URL>http://www.bco-dmo.org</gmd:URL>
            </gmd:linkage>
          </gmd:CI_OnlineResource>
        </gmd:onlineResource>
		  <gmd:hoursOfService>
        <gco:CharacterString>Monday - Friday 8:00am - 5:00pm</gco:CharacterString>
      </gmd:hoursOfService>
		  <gmd:contactInstructions>
		    <gco:CharacterString>For questions regarding this resource, please contact BCO-DMO via the email address provided.</gco:CharacterString>
		  </gmd:contactInstructions>
		</gmd:CI_Contact>
  </gmd:contactInfo>
  <gmd:role>
    <gmd:CI_RoleCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="pointOfContact"  codeSpace="007">pointOfContact</gmd:CI_RoleCode>
  </gmd:role>
</gmd:CI_ResponsibleParty>
      </gmd:contact>
    </gmd:MD_MaintenanceInformation>
  </gmd:metadataMaintenance>
  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation>
    <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/703.rdf" xlink:title="Light Meter" xlink:actuate="onRequest">MQ-210 Underwater Quantum Meter</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>MQ-210 Underwater Quantum Meter</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: MQ-210 Underwater Quantum Meter PI Supplied Instrument Description:Light measurements were taken with a MQ-210 Underwater Quantum Meter (Apogee, Logan, Utah, USA). Instrument Name: Light Meter Instrument Short Name:Light Meter   Instrument Description: Light meters are instruments that measure light intensity. Common units of measure for light intensity are umol/m2/s or uE/m2/s (micromoles per meter squared per second or microEinsteins per meter squared per second). (example: LI-COR 250A)</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/678.rdf" xlink:title="Water Quality Multiprobe" xlink:actuate="onRequest">ProDSS Multiparameter Water Quality Meter</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>ProDSS Multiparameter Water Quality Meter</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: ProDSS Multiparameter Water Quality Meter PI Supplied Instrument Description:Salinity, dissolved Oxygen, and temperature were measured with a ProDSS Multiparameter Water Quality Meter (YSI, Yellow Springs, Ohio, USA). Instrument Name: Water Quality Multiprobe Instrument Short Name:Water Quality Multiprobe   Instrument Description: An instrument which measures multiple water quality parameters based on the sensor configuration.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument>
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/instrument/678.rdf" xlink:title="Water Quality Multiprobe" xlink:actuate="onRequest">Hanna Instruments 9829 Multiparameter Meter</gmx:Anchor>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>Hanna Instruments 9829 Multiparameter Meter</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>PI Supplied Instrument Name: Hanna Instruments 9829 Multiparameter Meter PI Supplied Instrument Description:pH was measured with a Hanna Instruments 9829 Multiparameter Meter (Hanna Instruments, Smithfield, Rhode Island, USA), which was calibrated with a multipoint calibration to a Tris standard (Marine Physical Laboratory, Scripps Institution of Oceanography, La Jolla, California, USA). Instrument Name: Water Quality Multiprobe Instrument Short Name:Water Quality Multiprobe   Instrument Description: An instrument which measures multiple water quality parameters based on the sensor configuration.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>
