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Patterns in benthic coral reef communities at Pearl and Hermes Atoll along a wave exposure gradient Public Deposited

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  • This study compares percent cover of benthic organisms at the species level at Pearl and Hermes Atoll (PHA), the largest atoll in the Northwestern Hawaiian Islands, in order to determine 1) the degree of difference among sites, 2) whether wave exposure zones explain observed patterns in benthic community structure, and 3) whether species richness differs among wave exposure zones. Thirty-four sites representing four categorical wave exposure regimes were surveyed: high, intermediate-high, intermediate-low, and low. A two-way nested ANOSIM found there to be significant differences among sites and found that wave exposure explained some, but not all of this variation. High and low wave exposure zones were found to differ significantly from other zones. Low wave exposure sites exhibited the highest similarity to each other, and were dominated by the finger coral, Porites compressa (38% cover). High wave exposure sites were also similar to each other, and were dominated by crustose coralline red algae (37% cover). Sites within the intermediate-high zone exhibited substantial variability; however, the presence of the green alga Microdictyon setchellianum was a unifying characteristic among many sites in this zone. Finally, intermediate-low wave exposure sites exhibited the greatest degree of variability among sites, and also exhibited the greatest level of benthic species diversity including the presence of rarer species. Wave exposure proved a useful tool in describing the diverse assemblages of benthic communities at PHA, especially for sites experiencing extreme high and low wave exposure.
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  • Page-Albins, K., Vroom, P., Hoeke, R., Albins, M., & Smith, C. (2012). Patterns in benthic coral reef communities at pearl and hermes atoll along a wave-exposure gradient. Pacific Science, 66(4), 481-496. doi: 10.2984/66.4.6
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  • 66
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  • 4
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  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2013-02-13T18:18:51Z No. of bitstreams: 1 Page-AlbinsKimberlyNZoologyPatternsBenthicCoral.pdf: 987574 bytes, checksum: 55c46b4c7173029ae6ece887227b5a7b (MD5)
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-02-13T18:27:26Z (GMT) No. of bitstreams: 1 Page-AlbinsKimberlyNZoologyPatternsBenthicCoral.pdf: 987574 bytes, checksum: 55c46b4c7173029ae6ece887227b5a7b (MD5)
  • description.provenance : Made available in DSpace on 2013-02-13T18:27:26Z (GMT). No. of bitstreams: 1 Page-AlbinsKimberlyNZoologyPatternsBenthicCoral.pdf: 987574 bytes, checksum: 55c46b4c7173029ae6ece887227b5a7b (MD5) Previous issue date: 2012-10

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