MCR LTER: Coral Reef: Community Dynamics: Juvenile Coral Density from 2005, ongoing

These data describe the density (colonies per quadrat of 0.5 x 0.5 m size) of juvenile corals on the fringing reefs and outer reef (10 m depth) of Moorea. Beginning in 2005, surveys are completed annually at LTER 1 and 2 in the austral autumn (April-May). Addition event-motivated sampling began in 2011 with additional sites from the other two shores of Moorea surveyed and surveys at LTER 1 and 2 repeated in August; these surveys will likely continue for 1-2 years but will not become a maintained component of the annual sampling. The focus is on juvenile corals defined as individuals less than or equal to 40 mm diameter. These data include juvenile scleractinian corals and juvenile Millepora spp. (Class: Hydrozoa; Order Hydroida, Sub Order Anthomedusae, Family Milleporidae). These transects are co-located with annual photographic surveys and, therefore, broad community descriptors are also available.

本数据集记录了莫雷阿岛（Moorea）岸礁与外礁（水深10米）区域幼体珊瑚的种群密度（单位：0.5×0.5平方米样方内的菌落数）。自2005年起，研究人员于每年南秋季（4-5月）在长期生态研究站点（Long-Term Ecological Research, LTER）1号与2号样地开展年度调查。2011年起增设专项补充采样工作：新增莫雷阿岛另外两侧海岸的调查样点，并于8月重复开展LTER 1号与LTER 2号样地的调查。此类补充调查预计持续1-2年，不会纳入年度常规采样体系。本数据集聚焦直径≤40毫米的幼体珊瑚，涵盖幼体石珊瑚（scleractinian corals）以及幼体千孔珊瑚属（Millepora spp.）物种，其分类学归属为：水螅虫纲（Hydrozoa）、水螅目（Hydroida）、花水母亚目（Anthomedusae）、千孔珊瑚科（Milleporidae）。上述样带与年度摄影调查点位同址布设，因此可同步获取群落整体的生态学特征数据。