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首页> 外文期刊>Coral reefs: journal of the International Society for Reef Studies >Community structure of stony and soft corals on vertical unplanned artificial reefs in Eilat (Red Sea): comparison to natural reefs
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Community structure of stony and soft corals on vertical unplanned artificial reefs in Eilat (Red Sea): comparison to natural reefs

机译：埃拉特（红海）垂直非计划人工礁石上的石质和软珊瑚群落结构：与天然礁石的比较

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摘要

In many reef ecosystems, artificial reefs (AR) have become permanent additions to the area, sustaining well-developed benthic communities. Long-term studies on the development of AR coral communities are scarce, and comparisons with their natural surroundings are limited. The present study describes the stony and soft coral community structure of unplanned vertical AR in Eilat (Red Sea) that have progressed beyond the initial successional phases, and compares these to the adjacent natural reefs (NR). Coral communities were characterized using belt transects, conducted on 34- and 14-year-old unplanned AR, and on two proximate NR. Stony corals were the major component in the NR, while soft corals, mainly Nephtheidae, accounted for up to 90% of the total living coverage in the AR. This was attributed to physical and biological features associated with the ARs vertical orientation, which was absent in the NR, and to the life history traits of these soft corals. Community differences between the two AR were related to structural stability and age. The results suggest that AR may increase local heterogeneity and space availability by adding novel habitats, increasing production and elevating species diversity in the surroundings.
机译：在许多珊瑚礁生态系统中，人工珊瑚礁（AR）已成为该地区的永久性附属物，维持了发达的底栖生物群落。缺乏关于AR珊瑚群落发育的长期研究，与它们的自然环境的比较是有限的。本研究描述了埃拉特（红海）未计划的垂直AR的石质和软珊瑚群落结构，这些结构已超过初始演替阶段，并将其与邻近的自然礁石（NR）进行了比较。使用带状样带对珊瑚群落进行特征化，分别在34岁和14岁的未计划AR和两个邻近的NR上进行。石质珊瑚是自然保护区的主要组成部分，而软珊瑚，主要是海eph科，则占到了AR生活总覆盖率的90％。这归因于NR中不存在的与ARs垂直取向有关的物理和生物学特征，以及这些软珊瑚的生活史特征。两个AR之间的社区差异与结构稳定性和年龄有关。结果表明，AR可以通过增加新的栖息地，增加产量并提高周围环境的物种多样性来增加局部异质性和空间可用性。

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