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<front>
<journal-meta>
<journal-id journal-id-type="publisher">BG</journal-id>
<journal-title-group>
<journal-title>Biogeosciences</journal-title>
<abbrev-journal-title abbrev-type="publisher">BG</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Biogeosciences</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1726-4189</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/bg-6-2709-2009</article-id>
<title-group>
<article-title>Mountain birch – potentially large source of sesquiterpenes into high latitude atmosphere</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Haapanala</surname>
<given-names>S.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Ekberg</surname>
<given-names>A.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hakola</surname>
<given-names>H.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Tarvainen</surname>
<given-names>V.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Rinne</surname>
<given-names>J.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hellén</surname>
<given-names>H.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Arneth</surname>
<given-names>A.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Department of Physics, University of Helsinki, Helsinki, Finland</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Department of Physical Geography and Ecosystems Analysis, Lund University, Lund, Sweden</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Air Quality Research, Finnish Meteorological Institute, Helsinki, Finland</addr-line>
</aff>
<pub-date pub-type="epub">
<day>27</day>
<month>11</month>
<year>2009</year>
</pub-date>
<volume>6</volume>
<issue>11</issue>
<fpage>2709</fpage>
<lpage>2718</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2009 S. Haapanala et al.</copyright-statement>
<copyright-year>2009</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/3.0/">https://creativecommons.org/licenses/by/3.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://bg.copernicus.org/articles/6/2709/2009/bg-6-2709-2009.html">This article is available from https://bg.copernicus.org/articles/6/2709/2009/bg-6-2709-2009.html</self-uri>
<self-uri xlink:href="https://bg.copernicus.org/articles/6/2709/2009/bg-6-2709-2009.pdf">The full text article is available as a PDF file from https://bg.copernicus.org/articles/6/2709/2009/bg-6-2709-2009.pdf</self-uri>
<abstract>
<p>Emissions of volatile organic compounds (VOCs) from mountain birches were
measured in Abisko, northern Sweden. Mountain birches make up the majority
of the tree biomass in Scandinavian high latitudes, a region subject to
significant climate warming. The measurements were carried out in two
growing seasons. The emissions of four branches, each from a different
individual tree, were measured in June–August 2006 and one of them again in
July 2007. The measurements were conducted using a dynamic flow through
chamber covered with Teflon film. The studied mountain birches were found to
emit substantial amounts of linalool, monoterpenes and sesquiterpenes. The
monoterpene emission was dominated by sabinene. The magnitude and
composition of the sesquiterpene emission changed dramatically between the
years. For example, the average &amp;alpha;-farnesene emission potential in
2006 was almost 2600 ng g&lt;sub&gt;dw&lt;/sub&gt;&lt;sup&gt;&amp;minus;1&lt;/sup&gt; h&lt;sup&gt;&amp;minus;1&lt;/sup&gt; (3.5 pmol g&lt;sub&gt;dw&lt;/sub&gt;&lt;sup&gt;&amp;minus;1&lt;/sup&gt; s&lt;sup&gt;&amp;minus;1&lt;/sup&gt;)
while in 2007 &amp;alpha;-farnesene was not detected at all. Also
the emissions of other sesquiterpenes decreased in 2007 to a fraction of
that in 2006. One possible explanation for the change in emissions is the
herbivory damage that occurred in the area in 2004. Herbivory is known to
enhance the emissions of sesquiterpenes, especially those of &amp;alpha;-farnesene, and the effect may last for several years.</p>
</abstract>
<counts><page-count count="10"/></counts>
</article-meta>
</front>
<body/>
<back>
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