Species composition and distribution of Scleractinian corals discovered in the East Fujian waters

首次报道了闽东海域分布的3种石珊瑚,分别为造礁石珊瑚陀螺珊瑚(TurbInArIA SP.)、非造礁石珊瑚猩红筒星珊瑚(TubASTrEA COCCInEA lESSOn)和1个珊瑚待定种,其中陀螺珊瑚和1个珊瑚待定种为中国新记录.珊瑚分布面积约3.24 kM2,主要呈零星斑块状分布在岛礁周围水深2~25 M近岸岩礁区.2012年5~8月对闽东台山列岛和星仔列岛4 kM2范围内的55个岛礁近岸海域进行4个航次的调查表明,珊瑚的分布总体上南部的台山列岛海域分布数量多于北部的星仔列岛,海岛东部海域略多于西部.研究认为,闽东海域发现陀螺珊瑚说明其分布主要受台湾暖流的影响,揭示我国大陆沿岸造礁石珊瑚分布北缘可能扩展到台山列岛和星仔列岛.This paper reports the first time the distribution of 3 species of scleractinian corals in offshore waters of east Fujian.The species are Turbinaria sp.,Tubastrea coccinea Lesson and one unidentified.Among them,the two species,Turbinaria sp.and the one unidentified are new records in China.The corals scattered in near shore areas of 3.24 km2and depth of 2 ~ 25 m.Four surveys on 55 islands and reefs around Taishan and Xingzi Islands in an area of 4km2from May to August in 2012 discovered that the coral abundance was higher in the south around Taishan Islands than the north around Xingzi Islands and higher in the east waters of islands than the west.The distribution pattern of scleractinian corals has revealed the impacts of Taiwan warm waters to the Fujian eastern waters.Moreover,it also indicated that the possible extension of reef builders to its northernmost distribution boundary in waters of Taishan Islands in coastal China seas.福建省海洋与渔业厅科技计划资助项目(2012013

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^