Recurrent patterns of coral community and sediment facies development through successive phases of Holocene inner-shelf reef growth and decline
Recurrent patterns of coral community and sediment facies development through successive phases of Holocene inner-shelf reef growth and decline
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全新世内陆架礁生长和衰退的连续阶段中珊瑚群落和沉积相发育的循环模式
DOI：
10.1016/j.margeo.2011.09.012
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发表时间：
2011
期刊：
影响因子：
2.9
通讯作者：
Perry C
中科院分区：
文献类型：
--
作者：
Perry C
珊瑚群落的衰退以及由此产生的珊瑚礁增生潜力的“关闭”通常是许多珊瑚礁所经历的环境压力日益增加的结果。然而，一旦环境条件改善或有新的殖民基质出现，珊瑚礁群落重建的潜力尚不清楚。在这里，我们讨论来自澳大利亚大堡礁 (GBR) 内陆架高岛敦克岛 (Dunk Island) 岸礁的数据。尽管该礁石在空间上是连续的，但详细的取芯和测年表明它是在两个离散的时间阶段建造的。礁滩的内部首先形成于冰期后海侵的晚期——早期海平面高位（~6.9-4.5kcalyrB.P.），而外边缘则在全新世晚期海平面回归后发育，从~1.6kcalyrB.P.开始。呈现。两个珊瑚礁生长阶段之间间隔了近 3000 年。因此，来自该珊瑚礁的数据提供了关于时间连续性程度的同地点视角，在这种情况下，活跃生长的珊瑚礁在重新建立和再次生长之前会减慢并最终停止生长一段较长的时间，这种时间过渡相当于珊瑚礁“关闭”，然后重新“开启”珊瑚礁。两个阶段生物礁生长的沉积结构非常相似，相和珊瑚组合发育的模式也非常相似。这项研究表明，在珊瑚礁“开启”和“关闭”周期运行的时间尺度（百年到千年的时间尺度）内，珊瑚礁不仅可以成功地重建，而且重新生长的特征可能是建立几乎相同的造礁群落和发展几乎相同的沉积结构。因此，这些发现与正在进行的关于珊瑚礁群落是否以及以何种形式能够在增长受到抑制的时期（例如预计在不久的将来出现的时期）后重建的争论直接相关。
Coral community decline and resultant ‘turn-off’ of reef accretion potential are commonly predicted outcomes of the increasing environmental stresses experienced by many coral reefs. The potential for coral reef communities to re-establish once environmental conditions ameliorate or new substrates for colonisation become available are, however, less well understood. Here we discuss data from a fringing reef at Dunk Island, an inner-shelf high island on Australia's Great Barrier Reef (GBR). Although this reef is spatially contiguous, detailed coring and dating reveal it was constructed in two discrete temporal phases. The inner part of the reef flat formed first, during the late stages of the post-glacial marine transgression-early sea level highstand (~6.9–4.5kcalyrB.P.), whereas the outer fringe developed after the late-Holocene sea level regression, from ~1.6kcalyrB.P. to present. A hiatus of almost 3000years separates the two reef growth phases. Data from this reef thus provide a same-site perspective on the degree of temporal continuity that exists where an actively growing reef slows and eventually ceases to accrete for an extended period, before re-establishing and growing again—a temporal transition equivalent to reef ‘turn-off’ followed by renewed reef ‘turn-on’. The depositional architectures of the two phases of reef growth are very similar, as are patterns of facies and coral assemblage development. This study suggests that reefs, over the timescales at which cycles of reef ‘turn-on’ and ‘turn-off’ operate (the centennial to millennial timescale), can not only re-establish successfully, but also that regrowth may be characterised by the establishment of near identical reef-building communities and the development of near identical depositional structures. These findings thus have direct relevance to the on-going debate about whether, and in what form, reef communities will be able to re-establish themselves following periods of suppressed growth, such as those projected for the near-future.
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不同气候条件下更新世珊瑚礁的群落动态。
影响因子：
4.8
作者：
Danika Tager;J. Webster;D. Potts;W. Renema;J. Braga;J. Pandolfi
通讯作者：
J. Pandolfi
DOI：
--
发表时间：
1980
期刊：
影响因子：
--
作者：
J. Veron;M. Pichon
通讯作者：
M. Pichon
大堡礁泻湖的河流沉积物产量：空间格局和土地利用的影响
DOI：
--
发表时间：
1996
期刊：
影响因子：
--
作者：
Bofu Yu;D. Neil
通讯作者：
D. Neil
莫桑比克伊尼亚卡岛近岸浑浊环境中碎屑礁沉积物的结构和发育
DOI：
--
发表时间：
2005
期刊：
影响因子：
--
作者：
C. Perry
通讯作者：
C. Perry
全新世晚期海平面高位期间浑浊带珊瑚礁间歇性“开启”和“关闭”的证据
影响因子：
5.8
作者：
Perry C
通讯作者：
Perry C