Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092113 |
Fossil reefs reveal temporally distinct late Holocene lagoonal reef shutdown episodes at Kiritimati Island, central Pacific | |
E.J. Ryan; K.M. Morgan; P.S. Kench; S.D. Owen; C.P. Carvajal; T. Turner | |
2021-04-11 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | An extremely rare example of well‐preserved emergent Holocene fossil reefs exists at Kiritimati Island, central Pacific. Fossil reefs are rich geological archives of palaeoenvironmental change. The first palaeoecological surveys of two fossil reefs are presented, revealing high coral cover (40‐50%) and low diversity (6 genera). Fossil coral ages suggest reefs exhibited disparity in the timing of reef development (4113 and 1915 cal yBP) and ecological surveys show different coral compositions (Acropora or Porites dominant), between reefs. Results constrain two discrete episodes of reef shutdown (at 2905 and 1705 cal yBP) as lagoonal reefs thrived, and subsequently died off, through the late Holocene. Shifts in physio‐chemical conditions associated with reduced lagoon flushing following storm‐driven changes in atoll rim morphology are argued as the driver for the staged reef die‐off. The findings have implications for interpreting past and future eco‐morphological change on atolls, given projected increases in storminess with climate change. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/322009 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | E.J. Ryan,K.M. Morgan,P.S. Kench,et al. Fossil reefs reveal temporally distinct late Holocene lagoonal reef shutdown episodes at Kiritimati Island, central Pacific[J]. Geophysical Research Letters,2021. |
APA | E.J. Ryan,K.M. Morgan,P.S. Kench,S.D. Owen,C.P. Carvajal,&T. Turner.(2021).Fossil reefs reveal temporally distinct late Holocene lagoonal reef shutdown episodes at Kiritimati Island, central Pacific.Geophysical Research Letters. |
MLA | E.J. Ryan,et al."Fossil reefs reveal temporally distinct late Holocene lagoonal reef shutdown episodes at Kiritimati Island, central Pacific".Geophysical Research Letters (2021). |
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