Diversity and Biogeography of the Scleractinian Coral Fauna of Easter Island (Rapa Nui).

Date
2007-01
Authors
Glynn, Peter W.
Wellington, Gerard M.
Riegl, Bernhard
Olson, Donald B.
Borneman, Eric
Wieters, Evie A.
Contributor
Advisor
Department
Instructor
Depositor
Speaker
Researcher
Consultant
Interviewer
Annotator
Journal Title
Journal ISSN
Volume Title
Publisher
Honolulu, University of Hawaii Press
Volume
Number/Issue
Starting Page
Ending Page
Alternative Title
Abstract
Three surveys at Easter Island (Rapa Nui) spanning the period 1999– 2005, and examination of private and museum collections, have revealed a depauperate zooxanthellate scleractinian fauna. Collections were all made off island shelf exposures, from tide pools to 70 m with scuba, and by dredging to 100 m. With synonymies, reassignments, and two new records in the families Pocilloporidae and Faviidae, the Easter Island coral fauna now comprises 13 species. Pocilloporid and poritid coral abundances were generally high on all island shelves protected from southern swells. A cluster analysis of the coral fauna relationships of 19 south, central, and far-eastern Pacific sites indicates a strong affinity between those of Easter Island and the far-eastern Pacific equatorial region (e.g., Colombia, Ecuador, Panama´, and the Gala´pagos Islands). The precipitous drop in coral species richness from the Pitcairn Island group (61 species) to Easter Island suggests the presence of a dispersal barrier between these two remote southeastern Pacific areas, separated by @1,800 km of deep ocean waters. Consideration of the surface circulation based on satellite-tracked surface drifters confirms this conclusion. Surface currents are from east to west along the topography on which Easter and Sala-y-Go´mez Islands sit, suggesting a substantial barrier to recruitment from the west.
Description
v. ill. 23 cm.
Quarterly
Keywords
Natural history--Periodicals., Science--Periodicals, Natural history--Pacific Area--Periodicals.
Citation
Glynn PW,.Wellington GM, Riegl B, Olson DB, Borneman E, Wieters EA. Diversity and Biogeography of the Scleractinian Coral Fauna of Easter Island (Rapa Nui). Pac Sci 61(1): 67-90.
Extent
24 p.
Format
Geographic Location
Time Period
Related To
Table of Contents
Rights
Rights Holder
Local Contexts
Email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.