Abstract The abundance of the major coralline algal groups has been investigated and quantified in the coralline-rich facies of the Miocene shallow-water carbonates of the Eratosthenes Seamount (eastern Mediterranean, off-shore Cyprus). The analysis is based on the quantification of the most easily-recognizable groups of coralline algae in order to provide a user-friendly approach for palaeobathymetric reconstructions. Coralline algal distribution through the core suggests water depth estimates generally similar to those based on the composition of the skeletal assemblage and the benthic foraminiferal association in particular. The only noticeable difference occurs in the rhodolith and coral facies, where algal distribution suggests deeper waters than those indicated by benthic foraminifera. The distribution pattern of the major groups suggests that the ratio between Hapalidiales and Corallinales is the most reliable indicator of water-depth. The comparison with other models available in literature highlights a general zonation useful for the study of tropical, middle to late Miocene oligotrophic carbonates. Very shallow settings (0–20 m) are overwhelmingly dominated by Corallinales; in slightly deeper settings (20–40 m) Hapalidiales are more abundant, especially if the sea-floor is shaded (for example by a macrophyte canopy). Between 40 and 60 m, Hapalidiales dominate but Corallinales are still common, while below 60 m Corallinales are very rare. In non-oligotrophic environments this zonation is not reliable and, due to the reduced water clarity related to the high primary productivity, Hapalidiales clearly dominate even in very shallow settings.

中文翻译：

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珊瑚藻作为埃拉托色尼海山中新世碳酸盐岩中的深度指标（ODP Leg 160，Hole 966F）

摘要 在埃拉托色尼海山（地中海东部，塞浦路斯近海）的中新世浅水碳酸盐岩富含珊瑚的相中，主要珊瑚藻类群的丰度已被调查和量化。该分析基于对最容易识别的珊瑚藻群的量化，以便为古水深重建提供一种用户友好的方法。通过核心的珊瑚藻分布表明水深估计通常类似于基于骨骼组合的组成和特别是底栖有孔虫协会的水深估计。唯一显着的差异发生在红石相和珊瑚相中，其中藻类分布表明比底栖有孔虫表明的水域更深。主要群体的分布格局表明，Hapalidiales 和 Corallinales 之间的比率是最可靠的水深指标。与文献中可用的其他模型的比较突出了对研究热带、中新世至晚中新世贫营养碳酸盐岩有用的一般分带。非常浅的环境（0-20 m）以珊瑚目为主；在稍深的环境中（20-40 m），Hapalidiales 更丰富，特别是如果海底被遮蔽（例如被大型植物冠层）。在 40 到 60 m 之间，Hapalidiales 占主导地位，但珊瑚目仍然很常见，而低于 60 m 的珊瑚目则非常罕见。在非贫营养环境中，这种分区不可靠，并且由于与高初级生产力相关的水透明度降低，