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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>Shruti Khanna</dc:contributor>
  <dc:contributor>Jessica R. Lacy</dc:contributor>
  <dc:creator>Judith Z. Drexler</dc:creator>
  <dc:date>2020</dc:date>
  <dc:description>&lt;div id="ab0005" class="abstract author" lang="en"&gt;&lt;div id="as0005"&gt;&lt;p id="sp0045"&gt;Invasive plants have long been recognized for altering ecosystem properties, but their long-term impacts on ecosystem&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;processes&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;remain largely unknown. In this study, we determined the impact of&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;Egeria densa&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;Planch, a globally invasive freshwater macrophyte, on sedimentation processes in a large tidal freshwater region. We measured carbon accumulation (CARs) and inorganic sedimentation rates in submerged aquatic vegetation SAV dominated by&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;E. densa&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;and compared these rates to those of adjacent tidal freshwater marshes. Study sites were chosen along a range of hydrodynamic conditions in the Sacramento-San Joaquin Delta of California, USA, where&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;E. densa&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;has been widespread since 1990. Cores were analyzed for bulk density, % inorganic matter, % organic carbon,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;210&lt;/sup&gt;Pb, and&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;sup&gt;137&lt;/sup&gt;Cs. Our results show that&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;E. densa&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;patches constitute sinks for both “blue carbon” and inorganic sediment. Compared to marshes,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;E. densa&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;patches have greater inorganic sedimentation rates (&lt;i&gt;E. densa&lt;/i&gt;: 1103–5989 g m&lt;sup&gt;−2&lt;/sup&gt; yr&lt;sup&gt;−1&lt;/sup&gt;, marsh: 393–1001 g m&lt;sup&gt;−2&lt;/sup&gt; yr&lt;sup&gt;−1&lt;/sup&gt;,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;p&lt;/i&gt; &amp;lt; 0.01) and vertical accretion rates (&lt;i&gt;E. densa&lt;/i&gt;: 0.4–1.3 cm yr&lt;sup&gt;−1&lt;/sup&gt;, marsh: 0.3–0.5 cm yr&lt;sup&gt;−1&lt;/sup&gt;,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;p&lt;/i&gt; &amp;lt; 0.05), but similar CARs (&lt;i&gt;E. densa&lt;/i&gt;: 59–242 g C m&lt;sup&gt;−2&lt;/sup&gt; yr&lt;sup&gt;−1&lt;/sup&gt;, marsh: 109–169 g C m&lt;sup&gt;−2&lt;/sup&gt; yr&lt;sup&gt;−1&lt;/sup&gt;,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;p&lt;/i&gt; &amp;gt; 0.05). Sediment stored by&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;E. densa&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;likely reduces the resilience of adjacent marshes by depleting the sediment available for marsh-building. Because of its harmful traits,&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;E. densa&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;is not a suitable candidate for mitigating carbon pollution; however, currently invaded habitats may already contain a meaningful component of regional carbon budgets. Our results strongly suggest that&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;i&gt;E. densa&lt;/i&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;patches are sinks for carbon and inorganic sediment throughout its global range, raising questions about how invasive SAV is altering biogeochemical cycling and sediment dynamics across freshwater ecosystems.&lt;/p&gt;&lt;/div&gt;&lt;/div&gt;&lt;div id="ab0010" class="abstract graphical" lang="en"&gt;&lt;br&gt;&lt;/div&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/j.scitotenv.2020.142602</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Carbon storage and sediment trapping by Egeria densa Planch., a globally invasive, freshwater macrophyte</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>