Accretion patterns in Holocene tropical coral reefs: do massive coral reefs in deeper water with slowly growing corals accrete faster than shallower branched coral reefs with rapidly growing corals?

Gischler, Eberhard (2008) Accretion patterns in Holocene tropical coral reefs: do massive coral reefs in deeper water with slowly growing corals accrete faster than shallower branched coral reefs with rapidly growing corals? International Journal of Earth Sciences, 97 (4). pp. 851-859. ISSN 1437-3254

[img] PDF
Restricted to Full text available through external link

Download (478Kb)

    Abstract

    It is a widely held concept that tropical coral reefs in shallower water with branched acroporid corals should accrete faster than those in deeper water dominated by massive corals. Results from a study of Holocene development of the largest Atlantic reef system, including paleo-waterdepth data, challenge these concepts. In Belize barrier and atoll reefs, reef accretion-rates range from 0.46 to 7.50 m/kyr, and average 3.03 m/kyr, as measured along 33 dated reef sections. Interestingly, accretion-rates increase with increasing paleo-waterdepth, and sections dominated by massive corals accumulated even slightly faster than those with branched acroporids. Published data from some other reef locations reveal no significant trends when plotting reef accretion-rate versus paleo-waterdepth, also indicating that the above-mentioned concepts should be questioned. Massive corals apparently are more resistant and accrete in lower disturbance conditions in slightly deeper water (5–10 m) and higher accomodation (space available for sediment deposition) as compared to shallow water (0–5 m) branched acroporids, which repeatedly get broken and leveled out during tropical cyclones.

    Item Type: Peer-reviewed Journal Article
    Related URLs:
    Unique ID or DOI: 10.1007/s00531-007-0201-3
    Publisher: Springer Verlag
    Keywords: Holocene, Reef, Accretion, Belize, Carbonates
    Subjects: (C) Ecosystems > (CB) Marine > (CBA) Coral Reefs
    (Z) Other or Unspecified
    Publication Sources: (3) Other Source > (3D) Other or Unspecified
    Date Deposited: 09 Dec 2010 10:11
    Last Modified: 20 Jan 2011 14:29
    URI: http://eprints.uberibz.org/id/eprint/1103

    Actions (login required)

    View Item