The Lago Enriquillo fringing reef (Dominican Republic): a unique window into Holocene coral reef ecosystems of the Caribbean Sea
The Lago Enriquillo fringing reef (Dominican Republic): a unique window into Holocene coral reef ecosystems of the Caribbean Sea
复制标题
恩里基洛湖岸礁(多米尼加共和国):了解加勒比海全新世珊瑚礁生态系统的独特窗口
DOI:
10.1007/s00531-013-0869-5
复制
发表时间:
2013
影响因子:
2.3
通讯作者:
Lohmann
中科院分区:
文献类型:
--
作者:
Reuter;Böcker;Lohmann
The Enriquillo Valley in the southwestern Dominican Republic comprises spectacular outcrops in an extremely well-preserved fringing coral reef that thrived ca. 9.0–5.0 ka BP during the final stage of post-glacial rise of sea level (Mann et al. 1984). The relatively young age and dry climate have favored an excellent preservation of the reef biota (Greer et al. 2009)(Fig. 1). Over hundreds of meters of continuous transect through the reefs are exposed in several erosional gullies along the shore of Lago Enriquillo. These exposures reveal a distinct ecological zonation comprised of a shallow water branching coral zone (Fig. 1) and a deeper water mixed-coral zone with massive and platy growth forms that is typical for living Caribbean reefs with moderate wave exposure (Stemann and Johnson 1992; Lescinsky et al. 2012). The most impressive coral formations are enormous piles of Acropora cervicornis rubble representing the shallowest reef zone (Greer et al. 2009).Arid conditions prevailed after catastrophic closure of the marine seaway connecting the present-day lake with the Caribbean Sea resulting in evaporative drawdown of Lago Enriquillo to its present position at 42 m below sea level and subaerial exposure of the buildup as a whole (Mann et al. 1984). It provides the unusual opportunity of studying a tectonically undeformed Holocene reef with geological field methods and without the limitations of a scuba diver. The peculiar, geochemically pristine preservation and special geodynamic and climatic setting render the Enriquillo Valley to a unique GeoSite to examine all scales of environmental changes and related ecological gradients in a fossil reef ecosystem. The high abundance of sediment-tolerant coral species and their tendency to form almost monospecific stands and dome-cones with ragged margins (Fig. 1) indicate a high-sedimentation environment (Cuevas et al. 2008). Stable isotope data from Montastraea and Siderastrea have revealed decadal cyclicity in precipitation (storm frequency). 18O/16O ratios of the coral skeletons seem to be essentially controlled by freshwater
登录
查看更多内容
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
D. Cuevas;C. Sherman;W. Ramírez;D. Hubbard
通讯作者:
D. Hubbard
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
P. Mann;F. Taylor;K. Burke;R. Kulstad
通讯作者:
R. Kulstad
影响因子:
--
作者:
L. Greer;P. Swart
通讯作者:
P. Swart
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
T. Stemann;K. Johnson
通讯作者:
K. Johnson