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rft.atitle The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures?
rft.epage 324
rft.genre article
rft.issn 0022-1376
1537-5269
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rft.jtitle The Journal of Geology
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rft.pub The University of Chicago Press
rft.date 2006-05-01
x.date 2006-05-01T00:00:00Z
rft.spage 313
rft.volume 114
abstract <label>Abstract</label> <p>The effects of time averaging on the fossil record of soft‐substrate marine faunas have been investigated in great detail, but the temporal resolution of epibiont assemblages has been inferred only from limited‐duration deployment experiments. Individually dated shells provide insight into the temporal resolution of epibiont assemblages and the taphonomic history of their hosts over decades to centuries. Epibiont abundance and richness were evaluated for 86 dated valves of the rhynchonelliform brachiopod<italic>Bouchardia rosea</italic>collected from the inner shelf. Maximum abundance occurred on shells less than 400 yr old, and maximum diversity was attained within a century. Taphonomic evidence does not support models of live‐host colonization, net accumulation, or erasure of epibionts over time. Encrustation appears to have occurred during a brief interval between host death and burial, with no evidence of significant recolonization of exhumed shells. Epibiont assemblages of individually dated shells preserve ecological snapshots, despite host‐shell time averaging, and may record long‐term ecological changes or anthropogenic environmental changes. Unless the ages of individual shells are directly estimated, however, pooling shells of different ages artificially reduces the temporal resolution of their encrusting assemblages to that of their hosts, an artifact of analytical time averaging.</p>
authors Array ( [rft.aulast] => Rodland [rft.aufirst] => David L. )
Array ( [rft.aulast] => Kowalewski [rft.aufirst] => Michał )
Array ( [rft.aulast] => Carroll [rft.aufirst] => Monica )
Array ( [rft.aulast] => Simões [rft.aufirst] => Marcello G. )
doi 10.1086/501221
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author Rodland, David L., Kowalewski, Michał, Carroll, Monica, Simões, Marcello G.
author_facet Rodland, David L., Kowalewski, Michał, Carroll, Monica, Simões, Marcello G., Rodland, David L., Kowalewski, Michał, Carroll, Monica, Simões, Marcello G.
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container_title The Journal of Geology
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description <label>Abstract</label> <p>The effects of time averaging on the fossil record of soft‐substrate marine faunas have been investigated in great detail, but the temporal resolution of epibiont assemblages has been inferred only from limited‐duration deployment experiments. Individually dated shells provide insight into the temporal resolution of epibiont assemblages and the taphonomic history of their hosts over decades to centuries. Epibiont abundance and richness were evaluated for 86 dated valves of the rhynchonelliform brachiopod<italic>Bouchardia rosea</italic>collected from the inner shelf. Maximum abundance occurred on shells less than 400 yr old, and maximum diversity was attained within a century. Taphonomic evidence does not support models of live‐host colonization, net accumulation, or erasure of epibionts over time. Encrustation appears to have occurred during a brief interval between host death and burial, with no evidence of significant recolonization of exhumed shells. Epibiont assemblages of individually dated shells preserve ecological snapshots, despite host‐shell time averaging, and may record long‐term ecological changes or anthropogenic environmental changes. Unless the ages of individual shells are directly estimated, however, pooling shells of different ages artificially reduces the temporal resolution of their encrusting assemblages to that of their hosts, an artifact of analytical time averaging.</p>
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spelling Rodland, David L. Kowalewski, Michał Carroll, Monica Simões, Marcello G. 0022-1376 1537-5269 The University of Chicago Press https://www.jstor.org/stable/10.1086/501221 <label>Abstract</label> <p>The effects of time averaging on the fossil record of soft‐substrate marine faunas have been investigated in great detail, but the temporal resolution of epibiont assemblages has been inferred only from limited‐duration deployment experiments. Individually dated shells provide insight into the temporal resolution of epibiont assemblages and the taphonomic history of their hosts over decades to centuries. Epibiont abundance and richness were evaluated for 86 dated valves of the rhynchonelliform brachiopod<italic>Bouchardia rosea</italic>collected from the inner shelf. Maximum abundance occurred on shells less than 400 yr old, and maximum diversity was attained within a century. Taphonomic evidence does not support models of live‐host colonization, net accumulation, or erasure of epibionts over time. Encrustation appears to have occurred during a brief interval between host death and burial, with no evidence of significant recolonization of exhumed shells. Epibiont assemblages of individually dated shells preserve ecological snapshots, despite host‐shell time averaging, and may record long‐term ecological changes or anthropogenic environmental changes. Unless the ages of individual shells are directly estimated, however, pooling shells of different ages artificially reduces the temporal resolution of their encrusting assemblages to that of their hosts, an artifact of analytical time averaging.</p> The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures? The Journal of Geology
spellingShingle Rodland, David L., Kowalewski, Michał, Carroll, Monica, Simões, Marcello G., The Journal of Geology, The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures?
title The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures?
title_full The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures?
title_fullStr The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures?
title_full_unstemmed The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures?
title_short The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures?
title_sort the temporal resolution of epibiont assemblages: are they ecological snapshots or overexposures?
title_unstemmed The Temporal Resolution of Epibiont Assemblages: Are They Ecological Snapshots or Overexposures?
url https://www.jstor.org/stable/10.1086/501221, https://doi.org/10.1086/501221