<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>27424</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1194</pageFirst>
    <pageLast>1204</pageLast>
    <pageNumber/>
    <edition/>
    <issue>4</issue>
    <volume>27</volume>
    <type>articler</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>2021-05-06</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">The nitrogen cycle of tropical montane forest in Ecuador turns inorganic under environmental change</title>
    <abstract language="eng">[1] Water‐bound nitrogen (N) cycling in temperate terrestrial ecosystems of the Northern Hemisphere is today mainly inorganic because of anthropogenic release of reactive N to the environment. In little‐industrialized and remote areas, in contrast, a larger part of N cycling occurs as dissolved organic N (DON). In a north Andean tropical montane forest in Ecuador, the N cycle changed markedly during 1998–2010 along with increasing N deposition and reduced soil moisture. The DON concentrations and the fractional contribution of DON to total N significantly decreased in rainfall, throughfall, and soil solutions. This inorganic turn of the N cycle was most pronounced in rainfall and became weaker along the flow path of water through the system until it disappeared in stream water. Decreasing organic contributions to N cycling were caused not only by increasing inorganic N input but also by reduced DON production and/or enhanced DON decomposition. Accelerated DON decomposition might be attributable to less waterlogging and higher nutrient availability. Significantly increasing NO3‐N concentrations and NO3‐N/NH4‐N concentration ratios in throughfall and litter leachate below the thick organic layers indicated increasing nitrification. In mineral soil solutions, in contrast, NH4‐N concentrations increased and NO3‐N/NH4‐N concentration ratios decreased significantly, suggesting increasing net ammonification. Our results demonstrate that the remote tropical montane forests on the rim of the Amazon basin experienced a pronounced change of the N cycle in only one decade. This change likely parallels a similar change which followed industrialization in the temperate zone of the Northern Hemisphere more than a century ago.</abstract>
    <parentTitle language="eng">Global Biogeochemical Cycles</parentTitle>
    <identifier type="doi">10.1002/2012GB004471</identifier>
    <enrichment key="BTU">nicht an der BTU erstellt / not created at BTU</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <author>
      <firstName>Wolfgang</firstName>
      <lastName>Wilcke</lastName>
    </author>
    <submitter>
      <firstName>Kai</firstName>
      <lastName>Kaufmann</lastName>
    </submitter>
    <author>
      <firstName>Sophia</firstName>
      <lastName>Leimer</lastName>
    </author>
    <author>
      <firstName>Thorsten</firstName>
      <lastName>Peters</lastName>
    </author>
    <author>
      <firstName>Paul</firstName>
      <lastName>Emck</lastName>
    </author>
    <author>
      <firstName>Rütger</firstName>
      <lastName>Rollenbeck</lastName>
    </author>
    <author>
      <firstName>Katja</firstName>
      <lastName>Trachte</lastName>
    </author>
    <author>
      <firstName>Carlos</firstName>
      <lastName>Valarezo</lastName>
    </author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>nitrogen deposition</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>climate change</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>dissolved organic nitrogen</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>nitrogen turnover</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>ecosystem solutions</value>
    </subject>
    <collection role="institutes" number="2401">FG Atmosphärische Prozesse</collection>
  </doc>
</export-example>
