Connell Rainforest Plot Network: Rainforest Understorey Light Environment Data, Davies Creek Plot, Dinden National Park, Queensland, Australia, 2013

This data package comprises data from a series of hemispherical photographs taken in October 2013 at the Connell Rainforest Plot which is situated at Davies Creek, Dinden National Park, 25 km south west of Cairns, Queensland. The 1.7 ha plot consists of mapped and tagged trees in all size classes from tiny seedlings to large canopy trees. Rates of recruitment, growth and mortality have been measured at intervals of 1-6 years with records extending back to 1963. The primary determinant of growth rate in the understorey is light. Gaps created by the death of large canopy trees have been systematically surveyed many times over the decades until 2002, with the boundaries of the gaps being noted on hand drawn maps. These maps have never been digitized, and the originals are held at the University of California. Copies of some later maps are held by Green at La Trobe University. A digital camera with a fish-eye lens was used for the first time in 2013 to measure understorey light environments along the seedling transects. A synopsis of related data packages which have been collected as part of the Connell Rainforest Plot Network’s full program is provided at http://www.ltern.org.au/index.php/ltern-plot-networks/connell-rainforest.本数据包包含2013年10月于澳大利亚昆士兰州凯恩斯市西南25公里处的丹登国家公园戴维斯溪片区的康奈尔雨林样地（Connell Rainforest Plot）所拍摄的一系列半球影像（hemispherical photographs）数据。该1.7公顷样地内对所有径级的树木均完成了测绘与挂牌标记，涵盖从微型幼苗到大型冠层乔木的全部个体。该样地的树木更新、生长与死亡率监测周期为1至6年，完整监测记录可追溯至1963年。林下植物生长速率的核心影响因子为光照水平。大型冠层乔木枯死后形成的林隙，在2002年之前的数十年间已被多次系统性勘测，林隙边界均标注于手绘地图中。上述手绘地图从未进行数字化处理，原件现收藏于加利福尼亚大学。部分后期绘制的地图副本由格林（Green）保存于拉筹伯大学。2013年，研究团队首次使用搭载鱼眼镜头（fish-eye lens）的数码相机，沿幼苗样带开展林下光照环境的量化测量工作。作为康奈尔雨林样地网络（Connell Rainforest Plot Network）完整监测计划的一部分所收集的相关数据包概述，可通过以下链接查阅：http://www.ltern.org.au/index.php/ltern-plot-networks/connell-rainforest。