DOI: 10.1016/j.palaeo.2015.07.044
论文题名: Biogeography of Holocene coral species in the western Indian Ocean
作者: Hongo C. ; Montaggioni L.F.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2015
卷: 438 起始页码: 51
结束页码: 69
语种: 英语
英文关键词: Biogeography
; Coral
; Holocene
; Indo-Pacific
; Paleoecology
英文摘要: Understanding the relationship between coral biogeography and reef development is a key topic in sedimentology and paleoecology. Although the knowledge of coral reef growth and internal facies patterns during the Holocene has increased since the 1970s, the biogeography of Holocene coral species in the Indo-Pacific regions remains poorly constrained. In this study, we examined quantitative records of coral species based on data from five cores retrieved from two Holocene reefs in the western Indian Ocean: La Pointe-au-Sable reef on Mauritius Island and Toliara reef on Madagascar. Our results indicate that the dominant reef-building corals on both reefs were Isopora palifera, Acropora robusta/abrotanoides complex. Some corals (e.g., the A. robusta/. abrotanoides complex and Acropora digitifera) from 6. ka were found in Mauritius, whereas these were not identified in the cores from Madagascar before 1.5-1. ka. This delay may have been controlled by ocean currents and/or the competency period of the coral larvae. A comparison of these coral assemblages with those in other regions (Seychelles, Mayotte, Ryukyu Islands, Palau Islands, Papua New Guinea, the Great Barrier Reef, New Caledonia, and Vanuatu) showed that I. palifera was common in all of the studied regions, whereas Goniastrea retiformis probably migrated recently to Mauritius and Madagascar in response to prevailing surface ocean currents, including the South Equatorial Current and the Agulhas Current. One explanation for the late arrival of G. retiformis to the study sites could be that the competency period of G. retiformis larvae is shorter than that of I. palifera. Moreover, our quantitative analysis suggests that a given population size during the Holocene may have contributed to the abundance of species in modern reefs. This study emphasizes the need for further quantitative research on Holocene coral species in other regions to better understand the temporal and spatial patterns of coral biogeography. © 2015 Elsevier B.V.. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68813
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Physics and Earth Sciences, University of the Ryukyus, 1 Senbaru, Nishihara. Okinawa, Japan; Centre Européen de Recherche et d'Enseignement en Geosciences de l'Environnement (CEREGE), Unité Mixte de Recherche-Centre National de la Recherche Scientifique (UMR-CNRS 7330), Aix-Marseille Université, Centre de Saint Charles, Marseille, France; Department of Chemistry, Biology, and Marine Science, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, Japan
Recommended Citation:
Hongo C.,Montaggioni L.F.. Biogeography of Holocene coral species in the western Indian Ocean[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2015-01-01,438