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  1. M200 国際本部
  2. M200a 雑誌掲載論文
  3. 学術雑誌

Late glacial to deglacial variation of coralgal assemblages in the Great Barrier Reef, Australia

http://hdl.handle.net/2237/00030595
http://hdl.handle.net/2237/00030595
5834fba2-1e58-4ffa-aca6-f596dc2c14fb
名前 / ファイル ライセンス アクション
Humblet_et_al_GPC_rev2.pdf Humblet_et_al_GPC_rev2 (5.6 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-08-09
タイトル
タイトル Late glacial to deglacial variation of coralgal assemblages in the Great Barrier Reef, Australia
言語 en
著者 Humblet, M.

× Humblet, M.

WEKO 92951

en Humblet, M.

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Potts, D.C.

× Potts, D.C.

WEKO 92952

en Potts, D.C.

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Webster, J.M.

× Webster, J.M.

WEKO 92953

en Webster, J.M.

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Braga, J.C.

× Braga, J.C.

WEKO 92954

en Braga, J.C.

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Iryu, Y.

× Iryu, Y.

WEKO 92955

en Iryu, Y.

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Yokoyama, Y.

× Yokoyama, Y.

WEKO 92956

en Yokoyama, Y.

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Bourillot, R.

× Bourillot, R.

WEKO 92957

en Bourillot, R.

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Séard, C.

× Séard, C.

WEKO 92958

en Séard, C.

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Droxler, A.

× Droxler, A.

WEKO 92959

en Droxler, A.

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Fujita, K.

× Fujita, K.

WEKO 92960

en Fujita, K.

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Gischler, E.

× Gischler, E.

WEKO 92961

en Gischler, E.

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Kan, H.

× Kan, H.

WEKO 92962

en Kan, H.

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 (c)2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
抄録
内容記述 Integrated Ocean Drilling Program (IODP) Expedition 325 cored submerged reefs along the shelf edge of the Great Barrier Reef (GBR) to study sea-level and environmental changes and their impacts on reef communities and reef growth since the Last Glacial Maximum (LGM). Previous work defined five reef sequences (Reef 1–5) that span the last 30,000 years. Here we examined the variation in coralgal assemblages and their paleoenvironmental settings in late glacial to deglacial sequences from 23 holes cored seaward of the modern GBR in water depths from 46 to 131 m along four transects at three localities: Hydrographers Passage (HYD-01C and HYD-02A), Noggin Pass (NOG-01B), and Ribbon Reef (RIB-02A). We identified three coralline algal assemblages and eight coral assemblages indicating a broad range of reef settings from the shallow reef crest (0–5 m) to the deep forereef slope (>20 m). We document in detail for the first time the distribution and composition of reef communities that grew in the GBR during the LGM from 22,000–19,000 years ago. They included coral taxa that are major reef builders today: Isopora, Acropora gr. humilis, Dipsastraea gr. pallida, Porites, and Montipora. Prior to the fall in sea level to the maximum extent of the LGM, late glacial reef communities developed more proximally (landward) to the modern GBR along the shelf edge. Their distribution and composition reflect influences of the older Pleistocene basement depth and possible terrigenous sediment inputs. Post-LGM deglacial reef growth was vigorous in proximal sites and characterized by the accretion of a very shallow high-energy coralgal assemblage composed of medium to robustly branching Acropora, including A. gr. humilis, and thick algal crusts of Porolithon gr. onkodes associated with vermetid gastropods. More distally, reef growth was variably impacted by terrigenous input following deglacial reflooding of antecedent reef terraces. The coralgal succession and sedimentary facies in Noggin Pass indicate that an early drowning trend was linked to increased turbidity that was likely controlled by shelf morphology (narrow shelf, steep slope) and/or proximity to a paleo-river mouth. The deglacial succession in Ribbon Reef lacks typical shallow-water indicators, which may reflect influences of the particularly steep slope of the northern GBR shelf edge on reef zonation. A major sea-level jump at the onset of the Younger Dryas displaced reef habitats further upslope, forming a barrier reef system mainly composed of robustly branching acroporids distinct from the more distal sites. Our results highlight the importance of sedimentation and shelf morphology in addition to relative sea-level changes in controlling variations in reef community over centennial to millennial timescales.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2021-03-01
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.gloplacha.2018.12.014
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0921-8181
書誌情報 en : Global and Planetary Change

巻 174, p. 70-91, 発行日 2019-03
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