<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Jennifer A. Flannery</dc:contributor>
  <dc:contributor>Christopher R. Maupin</dc:contributor>
  <dc:contributor>Richard Z. Poore</dc:contributor>
  <dc:contributor>Terrence M. Quinn</dc:contributor>
  <dc:creator>Kristine L. DeLong</dc:creator>
  <dc:date>2011</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;This study examined the variations in the ratio of strontium-to-calcium (Sr/Ca) for two Atlantic corals (&lt;/span&gt;&lt;i&gt;Montastraea faveolata&lt;/i&gt;&lt;span&gt;&amp;nbsp;and&amp;nbsp;&lt;/span&gt;&lt;i&gt;Siderastrea siderea&lt;/i&gt;&lt;span&gt;) from the Dry Tortugas National Park (centered on 24.7&amp;deg;N, 82.8&amp;deg;W) in the Gulf of Mexico. Cores from coral colonies in close proximity (10s of meters) and with the same environmental conditions (i.e., depth and water chemistry) were micro-sampled with approximately monthly resolution and the resulting Sr/Ca variations were calibrated with local sea surface temperature (SST) records. Replication tests for coral Sr/Ca variations found high agreement between intra-colony variations and between individual colonies of&amp;nbsp;&lt;/span&gt;&lt;i&gt;S. siderea&amp;nbsp;&lt;/i&gt;&lt;span&gt;(a single&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. faveolata&lt;/i&gt;&lt;span&gt;&amp;nbsp;colony was sampled). Regression analysis of monthly variations in coral Sr/Ca and local SST revealed significant correlation on monthly and inter-annual timescales. Verification of the calibration on different timescales found coral Sr/Ca&amp;ndash;SST reconstructions in&amp;nbsp;&lt;/span&gt;&lt;i&gt;S. siderea&lt;/i&gt;&lt;span&gt;&amp;nbsp;were more accurate than those from&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. faveolata,&amp;nbsp;&lt;/i&gt;&lt;span&gt;especially on inter-annual timescales. Sr/Ca&amp;ndash;SST calibration equations for the two species are significantly different (cf., Sr/Ca&amp;nbsp;= -0.042 SST&amp;nbsp;+&amp;nbsp;10.070,&amp;nbsp;&lt;/span&gt;&lt;i&gt;S. siderea&lt;/i&gt;&lt;span&gt;; Sr/Ca&amp;nbsp;= -0.027 SST&amp;nbsp;+&amp;nbsp;9.893,&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. faveolata&lt;/i&gt;&lt;span&gt;). Mean linear extension for&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. faveolata&lt;/i&gt;&lt;span&gt;&amp;nbsp;is approximately twice that of&amp;nbsp;&lt;/span&gt;&lt;i&gt;S. siderea&lt;/i&gt;&lt;span&gt;&amp;nbsp;(4.63, 4.31, and 8.31&amp;nbsp;mm&amp;nbsp;year&lt;/span&gt;&lt;sup&gt;&amp;minus;1&lt;/sup&gt;&lt;span&gt;, A1, F1, and B3, respectively); however, seasonal Sr/Ca variability in&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. faveolata&lt;/i&gt;&lt;span&gt;&amp;nbsp;is less than&amp;nbsp;&lt;/span&gt;&lt;i&gt;S. siderea&amp;nbsp;&lt;/i&gt;&lt;span&gt;(0.323, 0.353, and 0.254&amp;nbsp;mmol&amp;nbsp;mol&lt;/span&gt;&lt;sup&gt;&amp;minus;1&lt;/sup&gt;&lt;span&gt;, A1, F1, and B3, respectively). The reduced slope for&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. faveolata&lt;/i&gt;&lt;span&gt;&amp;nbsp;is attributed to physical sampling issues associated with complex time-skeletal structure of&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. faveolata,&lt;/i&gt;&lt;span&gt;&amp;nbsp;i.e., a sampling effect, and not a growth effect since the faster growing&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. faveolata&lt;/i&gt;&lt;span&gt;&amp;nbsp;has the reduced Sr/Ca variability.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/j.palaeo.2011.05.005</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>A coral Sr/Ca calibration and replication study of two massive corals from the Gulf of Mexico</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>