福建东山海域柳珊瑚种类空间分布与多样性

调查并分析了福建东山珊瑚省级自然保护区内柳珊瑚的种类多样性及其空间分布,结果表明：（1）共发现柳珊瑚15种,分别属于6科11属,其中新记录属和新记录种各2个,分别为Gua-iagorgia anas和星柳珊瑚（Astrogorgia dumbea）.结合2005年7月和本次对东山柳珊瑚的采样调查,共发现柳珊瑚19种,全部为不含共生藻的种类.（2）东山柳珊瑚优势种为小月柳珊瑚（Menella sp.）、刺柳珊瑚（Echinogorgia sp.）和小尖柳珊瑚（Muricella sp.）.（3）东山柳珊瑚主要分布在实验区,如塔屿东面、铁钉屿南面和龙屿南面,而在缓冲区和核心区也有柳珊瑚分布较为丰富的站位.在靠近主要污染源的站位,未见到或者很少见到柳珊瑚的分布.东山珊瑚保护区内柳珊瑚的空间分布与食物的丰富程度、海流以及陆源输入等都有较大的关系.

Diversity and spatial distribution of gorgonian coral in Dongshan coastal waters in Fujian, China

The gorgonian species diversity and spatial distribution were analyzed based on data obtained during a survey of the Dongshan Coral Reserve.A total of 15 species of gorgonian corals,belonging to 11 genera of 6 families,were identified.2 new recorded genera and 2 novel recorded species were found,Guaiagorgia anas and Astrogorgia dumbea.There were a total of 19 gorgonian species recorded during two recent field investigations.The dominant gorgonian corals were Menella sp.,Echinogorgia sp.and Muricella sp.Gorgonian corals were primarily distributed in the experimental areas of the Dongshan Coral Reserve,including the water east of Ta Islet,south of Tieding Islet,and south of Long Islet.In the core region and the buffer area,there was also a relatively abundant distribution of gorgonian corals.In the stations near the pollution source,few gorgonian corals were recorded.The spatial distribution of gorgonian corals in Dongshan Coral Reserve are closely related to food concentration,current speed and terrestrial input.