Species-diverse coral communities on an artificial substrate at a tuna farm in Amami, Japan
Species-diverse coral communities on an artificial substrate at a tuna farm in Amami, Japan
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日本奄美金枪鱼养殖场人工基质上的物种多样化珊瑚群落
DOI：
10.1016/j.marenvres.2012.12.009
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发表时间：
2013
影响因子：
3.3
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
Hiroki Hata;et al.
金枪鱼养殖在世界范围内不断扩大，因此有必要监测/管理其对自然环境的影响。在日本，金枪鱼养殖是在因大规模白化事件和棘冠海星（COTS）爆发而受损的珊瑚礁上进行的。本研究以金枪鱼养殖场人工基质上的珊瑚群落为研究对象，探讨金枪鱼养殖场对自然环境可能产生的影响。在日本南部奄美群岛的农场里，悬挂在绳子上的珊瑚繁盛。这些船停泊在海平面以下3米处50米深的水中。分析了绳索上的珊瑚群落，并将其与相邻的两个cots破坏珊瑚礁的自然基质上的珊瑚群落和受保护珊瑚礁的珊瑚群落进行了比较。珊瑚被监测了整整一年。60种珊瑚生长在绳索上，相当于在奄美已知的220种珊瑚中的27.3%。珊瑚群落是独特的，主要是巨大的faviid珊瑚。在观察期间，绳索上的水温很少超过30.0°C，绳索上的珊瑚没有严重漂白或被沉积覆盖。金枪鱼养殖场的基础设施为珊瑚提供了适宜的栖息地，并建立了物种丰富的珊瑚群落。这些珊瑚群落是连接金枪鱼养殖场和自然环境的重要节点。
Tuna-farming is expanding worldwide, necessitating the monitoring/managing of its effects on the natural environment. In Japan, tuna-farming is conducted on coral reefs that have been damaged by mass-bleaching events and crown-of-thorns starfish (COTS) outbreaks. This study focused on the coral community on an artificial substrate of tuna-farm to reveal the possible effects of tuna-farming on the natural environment. Corals flourished on ropes suspended in the farm in the Amami Islands, southern Japan. These were moored 3 m below the sea-surface in 50-m-deep water. The coral community on the rope was analyzed and compared with those on natural substrata on two adjacent COTS-damaged reefs and with that in a protected reef. Corals were monitored throughout a year. Sixty coral species grew on the ropes, that corresponds to 27.3% of the 220 species known from Amami. The coral community was unique, dominated by massive faviid corals. On the ropes, the water temperature rarely exceeded 30.0 °C and no corals on the rope were severely bleached or covered by sedimentation during the observations. The tuna-farm infrastructure provided corals with a suitable habitat, and species-rich coral communities were established. These coral communities are an important node connecting tuna-farms and the natural environment.