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        <gco:CharacterString>Physical environmental data. Dataset Description: &amp;lt;p&amp;gt;Physical environmental data from Little Lagoon, Alabama.&amp;lt;/p&amp;gt; Methods and Sampling: &amp;lt;p&amp;gt;Little Lagoon is a shallow coastal lagoon that is tidally connected to the Gulf of Mexico but has no riverine inputs. The water in the lagoon is replenished solely from precipitation and groundwater inputs primarily on the East end (Su et al. 2012). Because of the rapid development in Baldwin County, a large amount of NO3- enters the Little Lagoon system through SGD (Murgulet &amp;amp;amp; Tick 2008). In this region, there can be rapid changes in the depth to groundwater (Fig. 4.1 inset) and episodic SGD inputs to the lagoon (Su et al.2013). Within the lagoon, three sites were selected (East, Mouth, and West) to represent the gradient that exists across the lagoon from the input of groundwater. Sites were sampled on a near-monthly basis from February 2012 to February 2013.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Abiotic Parameters&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;At each site, point measurements of temperature, salinity, pH, and dissolved oxygen (DO) were recorded with a YSI 556 Multiparameter Meter. Triplicate sediment porewater samples were collected with a modified coring device (2.7 cm ID), sectioned at 10 mm intervals to 60 mm, and extracted in 10 mL of 1 M NaCl (Smith &amp;amp;amp; Caffrey 2009) prior to filtering and freezing. The filtered (GF/F, 0.7 micron) supernatant was analyzed for DIN (NO2 -, NO3 -, NH4 +) and phosphate (PO4 3-), and represents total extractable porewater nutrients. Standard wet chemical techniques modified for the Skalar SAN+ Autoanalyzer (Pennock &amp;amp;amp; Cowan 2001) were performed for all nutrient concentration analysis. Water column and sediment chlorophyll-α content were determined fluorometrically (Welschmeyer 1994) after cold extraction in 90% acetone from filters and in triplicate, respectively.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Additional methodology can be found in:&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Bernard, Rebecca &amp;amp;amp; Mortazavi, Behzad &amp;amp;amp; A. Kleinhuizen, Alice. (2015). Dissimilatory nitrate reduction to ammonium (DNRA) seasonally dominates NO3− reduction pathways in an anthropogenically impacted sub-tropical coastal lagoon. Biogeochemistry. 125. 47-64.&amp;amp;nbsp;&amp;lt;a href=&amp;quot;https://link.springer.com/article/10.1007%2Fs10533-015-0111-6&amp;quot; target=&amp;quot;_blank&amp;quot;&amp;gt;10.1007/s10533-015-0111-6&amp;lt;/a&amp;gt;.&amp;amp;nbsp;&amp;lt;/p&amp;gt;</gco:CharacterString>
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        <gmx:Anchor xlink:href="http://lod.bco-dmo.org/id/award/497637.rdf" xlink:title="OCE-0962008" xlink:actuate="onRequest">Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0962008 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0962008</gmx:Anchor>
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	Name: Year
	Units: unitless
	Description: &lt;p&gt;Year ID that samples were taken&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724300.rdf
	Name: Date
	Units: unitless
	Description: &lt;p&gt;Month and day that samples were taken; MMM-DD&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724301.rdf
	Name: avg_sediment_chla
	Units: miligrams per m-2
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http://lod.bco-dmo.org/id/dataset-parameter/724302.rdf
	Name: avg_sediment_chla_SE
	Units: miligrams per m-2
	Description: &lt;p&gt;Standard error of average sediment chlorophyll-a content&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724303.rdf
	Name: avg_waterColumn_chla
	Units: ug L-1
	Description: &lt;p&gt;Average water column cholorphyll-a content from all sites&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724304.rdf
	Name: avg_waterColumn_chla_SE
	Units: ug L-1
	Description: &lt;p&gt;Standard error of average water column chlorophyll-a content&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724305.rdf
	Name: avg_temperature
	Units: Celsius
	Description: &lt;p&gt;Average temperature across sites&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724306.rdf
	Name: avg_temperature_SE
	Units: Celsius
	Description: &lt;p&gt;Standard error of average temperatures across sites&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724307.rdf
	Name: avg_salinity
	Units: PSU
	Description: &lt;p&gt;Average salinity across sites&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724308.rdf
	Name: avg_salinity_SE
	Units: PSU
	Description: &lt;p&gt;Standard error of average salinity across sites&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724309.rdf
	Name: avg_waterColumn_Nox
	Units: micromoles
	Description: &lt;p&gt;Average water column values for nitrate plus nitrite&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724310.rdf
	Name: avg_waterColumn_Nox_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of average water column values for nitrate plus nitrite&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724311.rdf
	Name: avg_waterColumn_NH4
	Units: micromoles
	Description: &lt;p&gt;Average water column values for ammonium&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724312.rdf
	Name: avg_waterColumn_NH4_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of average water column values for ammonium&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724313.rdf
	Name: avg_waterColumn_PO4
	Units: micromoles
	Description: &lt;p&gt;Average water column values for PO4 3-&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724314.rdf
	Name: avg_waterColumn_PO4_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of average water column values for PO4 3-&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724315.rdf
	Name: Mouth_Temperature
	Units: Celsius
	Description: &lt;p&gt;Temperature sampled at the site Mouth; location of site is 30.243683, -87.738407&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724316.rdf
	Name: East_Temperature
	Units: Celsius
	Description: &lt;p&gt;Temperature sampled at the site East; location of site is 30.253347, -87.724729&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724317.rdf
	Name: West_Temperature
	Units: Celsius
	Description: &lt;p&gt;Temperature sampled at the site West; location of site is 30.247181, -87.767856&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724318.rdf
	Name: Mouth_Salinity
	Units: PSU
	Description: &lt;p&gt;Salinity at the site Mouth; location of site is 30.243683, -87.738407&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724319.rdf
	Name: East_Salinity
	Units: PSU
	Description: &lt;p&gt;Salinity at the site East; location of site is 30.253347, -87.724729&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724320.rdf
	Name: West_Salinity
	Units: PSU
	Description: &lt;p&gt;Salinity at the site West; location of site is 30.247181, -87.767856&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724321.rdf
	Name: Mouth_sediment_chla
	Units: miligrams per m-2
	Description: &lt;p&gt;Sediment chlorophyll-a content from the site Mouth; location of site is 30.243683, -87.738407&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724322.rdf
	Name: Mouth_sediment_chla_SE
	Units: miligrams per m-3
	Description: &lt;p&gt;Standard error of sediment chlorophyll-a content.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724323.rdf
	Name: East_sediment_chla
	Units: miligrams per m-2
	Description: &lt;p&gt;Sediment chlorophyll-a content from the site East location of site is 30.253347, -87.724729&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724324.rdf
	Name: East_sediment_chla_SE
	Units: miligrams per m-3
	Description: &lt;p&gt;Standard error of sediment chlorophyll-a content.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724325.rdf
	Name: West_sediment_chla
	Units: miligrams per m-2
	Description: &lt;p&gt;Sediment chlorophyll-a content from the site West location of site is 30.247181, -87.767856&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724326.rdf
	Name: West_sediment_chla_SE
	Units: miligrams per m-3
	Description: &lt;p&gt;Standard error of sediment chlorophyll-a content.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724327.rdf
	Name: Mouth_waterColumn_NH4
	Units: micromoles
	Description: &lt;p&gt;NH4+ concentration in the water column of site Mouth; location of site is 30.243683, -87.738407&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724328.rdf
	Name: Mouth_waterColumn_NH4_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of NH4+ concentration in the water column.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724329.rdf
	Name: East_waterColumn_NH4
	Units: micromoles
	Description: &lt;p&gt;NH4- concentration in the water column of site East; location of site is 30.253347, -87.724729&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724330.rdf
	Name: East_waterColumn_NH4_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of NH4+ concentration in the water column.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724331.rdf
	Name: West_waterColumn_NH4
	Units: micromoles
	Description: &lt;p&gt;NH4+ concentration in the water column of site West; location of site is 30.247181, -87.767856&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724332.rdf
	Name: West_waterColumn_NH4_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of NH4+ concentration in the water column.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724333.rdf
	Name: Mouth_waterColumn_NO3
	Units: micromoles
	Description: &lt;p&gt;NO3- concentration in the water column of site Mouth; location of site is 30.243683, -87.738407&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724334.rdf
	Name: Mouth_waterColumn_NO3_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of NO3- concentration in the water column.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724335.rdf
	Name: East_waterColumn_NO3
	Units: micromoles
	Description: &lt;p&gt;NO3- concentration in the water column of site East; location of site is 30.253347, -87.724729&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724336.rdf
	Name: East_waterColumn_NO3_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of NO3- concentration in the water column.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724337.rdf
	Name: West_waterColumn_NO3
	Units: micromoles
	Description: &lt;p&gt;NO3- concentration in the water column of site West; location of site is 30.247181, -87.767856&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724338.rdf
	Name: West_waterColumn_NO3_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of NO3- concentration in the water column.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724339.rdf
	Name: Mouth_waterColumn_PO4
	Units: micromoles
	Description: &lt;p&gt;PO4 3- concentration in the water column of site Mouth; location of site is 30.243683, -87.738407&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724340.rdf
	Name: Mouth_waterColumn_PO4_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of PO4 3- concentration in the water column.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724341.rdf
	Name: East_waterColumn_PO4
	Units: micromoles
	Description: &lt;p&gt;PO4 3- concentration in the water column of site East; location of site is 30.253347, -87.724729&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724342.rdf
	Name: East_waterColumn_PO4_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of PO4 3- concentration in the water column.&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724343.rdf
	Name: West_waterColumn_PO4
	Units: micromoles
	Description: &lt;p&gt;PO4 3- concentration in the water column of site West; location of site is 30.247181, -87.767856&lt;/p&gt; 
http://lod.bco-dmo.org/id/dataset-parameter/724344.rdf
	Name: West_waterColumn_PO4_SE
	Units: micromoles
	Description: &lt;p&gt;Standard error of PO4 3- concentration in the water column.&lt;/p&gt; 
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                <gco:CharacterString>&amp;lt;p&amp;gt;Little Lagoon is a shallow coastal lagoon that is tidally connected to the Gulf of Mexico but has no riverine inputs. The water in the lagoon is replenished solely from precipitation and groundwater inputs primarily on the East end (Su et al. 2012). Because of the rapid development in Baldwin County, a large amount of NO3- enters the Little Lagoon system through SGD (Murgulet &amp;amp;amp; Tick 2008). In this region, there can be rapid changes in the depth to groundwater (Fig. 4.1 inset) and episodic SGD inputs to the lagoon (Su et al.2013). Within the lagoon, three sites were selected (East, Mouth, and West) to represent the gradient that exists across the lagoon from the input of groundwater. Sites were sampled on a near-monthly basis from February 2012 to February 2013.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Abiotic Parameters&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;At each site, point measurements of temperature, salinity, pH, and dissolved oxygen (DO) were recorded with a YSI 556 Multiparameter Meter. Triplicate sediment porewater samples were collected with a modified coring device (2.7 cm ID), sectioned at 10 mm intervals to 60 mm, and extracted in 10 mL of 1 M NaCl (Smith &amp;amp;amp; Caffrey 2009) prior to filtering and freezing. The filtered (GF/F, 0.7 micron) supernatant was analyzed for DIN (NO2 -, NO3 -, NH4 +) and phosphate (PO4 3-), and represents total extractable porewater nutrients. Standard wet chemical techniques modified for the Skalar SAN+ Autoanalyzer (Pennock &amp;amp;amp; Cowan 2001) were performed for all nutrient concentration analysis. Water column and sediment chlorophyll-α content were determined fluorometrically (Welschmeyer 1994) after cold extraction in 90% acetone from filters and in triplicate, respectively.&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Additional methodology can be found in:&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Bernard, Rebecca &amp;amp;amp; Mortazavi, Behzad &amp;amp;amp; A. Kleinhuizen, Alice. (2015). Dissimilatory nitrate reduction to ammonium (DNRA) seasonally dominates NO3− reduction pathways in an anthropogenically impacted sub-tropical coastal lagoon. Biogeochemistry. 125. 47-64.&amp;amp;nbsp;&amp;lt;a href=&amp;quot;https://link.springer.com/article/10.1007%2Fs10533-015-0111-6&amp;quot; target=&amp;quot;_blank&amp;quot;&amp;gt;10.1007/s10533-015-0111-6&amp;lt;/a&amp;gt;.&amp;amp;nbsp;&amp;lt;/p&amp;gt;</gco:CharacterString>
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                <gco:CharacterString>&amp;lt;p&amp;gt;Data were flagged as below detection limits if no measurable rates were returned after calculations. See equations in methodology section of:&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;Bernard, Rebecca &amp;amp;amp; Mortazavi, Behzad &amp;amp;amp; A. Kleinhuizen, Alice. (2015). Dissimilatory nitrate reduction to ammonium (DNRA) seasonally dominates NO3− reduction pathways in an anthropogenically impacted sub-tropical coastal lagoon. Biogeochemistry. 125. 47-64.&amp;amp;nbsp;&amp;lt;a href=&amp;quot;https://link.springer.com/article/10.1007%2Fs10533-015-0111-6&amp;quot; target=&amp;quot;_blank&amp;quot;&amp;gt;10.1007/s10533-015-0111-6&amp;lt;/a&amp;gt;.&amp;amp;nbsp;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;Statistical Analysis&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;To test the seasonal flux variability between sites in Little Lagoon, two-way ANOVAs with site and date as independent variables were performed. When data could not be transformed to meet ANOVA assumptions, Wilcoxon/Kruskal-Wallis nonparametric tests were used. When significant differences occurred, Tukey HSD or Steel-Dwass post hoc tests were used to determine significant interactions. A Principal component analysis (PCA) was conducted on all biogeochemical parameters to identify underlying multivariate components that may be influencing N fluxes. Spearman’s rho correlation analysis was used to examine the relationship between the principal components and fluxes. Statistical significance of the data set was determined at α=0.05 and error is reported as standard error. All statistical analyses were performed in SAS JMP 10 (SAS Institute Inc.).&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;BCO-DMO Data Processing Notes:&amp;lt;/strong&amp;gt;&amp;lt;/p&amp;gt;

&amp;lt;p&amp;gt;- Data reorganized into one table under one set of column names from both original files&amp;lt;br /&amp;gt;
- Units removed from column names&amp;lt;br /&amp;gt;
- Column names reformatted to meet BCO-DMO standards&amp;lt;br /&amp;gt;
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