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<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>Mark M. Dornblaser</dc:contributor>
  <dc:contributor>Emily H. Stanley</dc:contributor>
  <dc:contributor>David W. Clow</dc:contributor>
  <dc:contributor>Robert G. Striegl</dc:contributor>
  <dc:creator>John T. Crawford</dc:creator>
  <dc:date>2015</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Inland waters are an important component of the global carbon cycle through transport, storage, and direct emissions of CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt; and CH&lt;/span&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt; to the atmosphere. Despite predictions of high physical gas exchange rates due to turbulent flows and ubiquitous supersaturation of CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;—and perhaps also CH&lt;/span&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt;—patterns of gas emissions are essentially undocumented for high mountain ecosystems. Much like other headwater networks around the globe, we found that high-elevation streams in Rocky Mountain National Park, USA, were supersaturated with CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt; during the growing season and were net sources to the atmosphere. CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;concentrations in lakes, on the other hand, tended to be less than atmospheric equilibrium during the open water season. CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt; and CH&lt;/span&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt; emissions from the aquatic conduit were relatively small compared to many parts of the globe. Irrespective of the physical template for high gas exchange (high &lt;/span&gt;&lt;i&gt;k&lt;/i&gt;&lt;span&gt;), we found evidence of CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt; source limitation to mountain streams during the growing season, which limits overall CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt;emissions. Our results suggest a reduced importance of aquatic ecosystems for carbon cycling in high-elevation landscapes having limited soil development and high CO&lt;/span&gt;&lt;sub&gt;2&lt;/sub&gt;&lt;span&gt; consumption via mineral weathering.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1002/2014JG002861</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>AGU Publications</dc:publisher>
  <dc:title>Source limitation of carbon gas emissions in high-elevation mountain streams and lakes</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>