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Cabled ocean observatory data reveal food supply mechanisms to a cold-water coral reef

van Engeland, Tom; Godø, Olav Rune; Johnsen, Espen; Duineveld, Gerard C. A.; van Oevelen, Dick


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  <identifier identifierType="URL">https://zenodo.org/record/2558111</identifier>
  <creators>
    <creator>
      <creatorName>van Engeland, Tom</creatorName>
      <givenName>Tom</givenName>
      <familyName>van Engeland</familyName>
      <affiliation>NIOZ Royal Netherlands Institute for Sea Research, Department of Estuarine and Delta Systems, and Utrecht University, Korringaweg 7, 4401NT Yerseke, The Netherlands</affiliation>
    </creator>
    <creator>
      <creatorName>Godø, Olav Rune</creatorName>
      <givenName>Olav Rune</givenName>
      <familyName>Godø</familyName>
      <affiliation>Institute of Marine Research, Norway</affiliation>
    </creator>
    <creator>
      <creatorName>Johnsen, Espen</creatorName>
      <givenName>Espen</givenName>
      <familyName>Johnsen</familyName>
      <affiliation>Institute of Marine Research, Norway</affiliation>
    </creator>
    <creator>
      <creatorName>Duineveld, Gerard C. A.</creatorName>
      <givenName>Gerard C. A.</givenName>
      <familyName>Duineveld</familyName>
      <affiliation>NIOZ Royal Netherlands Institute for Sea Research, Department of Ocean Systems, and Utrecht University, Landsdiep 4, 1797 SZ 't Horntje (Texel), The Netherlands</affiliation>
    </creator>
    <creator>
      <creatorName>van Oevelen, Dick</creatorName>
      <givenName>Dick</givenName>
      <familyName>van Oevelen</familyName>
      <affiliation>NIOZ Royal Netherlands Institute for Sea Research, Department of Estuarine and Delta Systems, and Utrecht University, Korringaweg 7, 4401NT Yerseke, The Netherlands</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Cabled ocean observatory data reveal food supply mechanisms to a cold-water coral reef</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2019</publicationYear>
  <dates>
    <date dateType="Issued">2019-02-06</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/2558111</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1016/j.pocean.2019.01.007</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/atlas</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Abstract&lt;br&gt;
We investigated food supply mechanisms to a cold-water coral (CWC) reef at 260 m depth on the&lt;br&gt;
Norwegian continental shelf using data from a cabled ocean observatory equipped with Acoustic&lt;br&gt;
Doppler Current Profilers (ADCPs), an echosounder, and sensors for chlorophyll, turbidity and&lt;br&gt;
hydrography in the benthic boundary layer (BBL). Tidal currents of up to tens of cm s-1 dominated&lt;br&gt;
BBL hydrodynamics while residual currents were weak (~10 cm s-1), emphasizing a supply and high&lt;br&gt;
retention of locally produced phytodetritus within the trough. A direct connection between the reefs&lt;br&gt;
and surface organic matter (OM) was established by turbulent mixing and passive particle settling, but&lt;br&gt;
relative contributions varied seasonally. Fresh OM from a spring-bloom was quickly mixed into the&lt;br&gt;
BBL, but temperature stratification in summer reduced the surface-to-bottom connectivity and reduced&lt;br&gt;
the phytodetritus supply. A qualitative comparison among acoustic backscatter in the ADCPs (600&lt;br&gt;
kHz, 190 kHz) and echosounder (70 kHz) suggests that vertically migrating zooplankton may present&lt;br&gt;
an alternative food source in summer. Nocturnal feeding by zooplankton in the upper water column&lt;br&gt;
sustains downward OM transport independent from water column mixing and may dominate as food&lt;br&gt;
supply pathway over sedimentation of the phytodetritus, especially during stratified conditions. In&lt;br&gt;
addition, it could present a concentrating mechanism for nutritional components as compensation for&lt;br&gt;
the deteriorating phytodetritus quality. Overall, the observed patterns suggest seasonal changes in the&lt;br&gt;
food supply pathways to the reef communities. The moderating role of temperature stratification in&lt;br&gt;
phytodetritus transport suggests stronger dependence of the cold-water corals on zooplankton for their&lt;br&gt;
dietary requirements with increased stratification under future climate scenarios. This study&lt;br&gt;
demonstrates the added value of permanent ocean observatories to research based on dedicated&lt;br&gt;
campaigns and regular monitoring.&lt;/p&gt;</description>
  </descriptions>
  <fundingReferences>
    <fundingReference>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/678760/">678760</awardNumber>
      <awardTitle>A Trans-AtLantic Assessment and deep-water ecosystem-based Spatial management plan for Europe</awardTitle>
    </fundingReference>
  </fundingReferences>
</resource>
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