Dendrometers during drought 2013-2016 in the Luquillo Forest Dynamics Plot

96 trees of 25 species were fit with dendrometer bands in November 2012 and measured for 4 years, on average every 28 days. Initially sampling intensity was once every three months then increase to bi-weekly. The trees were located in the LFDP in 5 modified Gentry transects placed throughout (one in each corner and one in the center); tree tags are LFDP numbers corresponding with LFDP tree census data. Measurements ended in November 2016. Fine temporal-scale monitoring of tree growth using dendrometer bands in the LFDP ) (2013-2016) Support for this work was provided by grants BSR-8811902, DEB-9411973, DEB-9705814 , DEB-0080538, DEB-0218039 , DEB-0620910 , DEB-1239764, DEB-1546686, and DEB-1831952 from the National Science Foundation to the University of Puerto Rico as part of the Luquillo Long-Term Ecological Research Program. Additional support provided by the University of Puerto Rico and the International Institute of Tropical Forestry, USDA Forest Service.

2012年11月，研究人员为25个物种的96棵树木安装了测树带（dendrometer bands），并开展了为期4年的监测，平均每28天测量一次。初始采样频率为每三个月一次，随后提升至每两周一次。所有树木均位于LFDP区域内的5条改良型Gentry样带（Gentry transects）中，样带分布于整个研究区（四角各一条，中心一条）；树木标签采用LFDP编号，与LFDP树木普查数据一一对应。监测工作于2016年11月结束。LFDP内利用测树带进行树木生长的精细时间尺度监测（2013-2016）。本研究获得美国国家科学基金会（National Science Foundation）授予波多黎各大学的多项资助（编号BSR-8811902、DEB-9411973、DEB-9705814、DEB-0080538、DEB-0218039、DEB-0620910、DEB-1239764、DEB-1546686及DEB-1831952），这些资助属于卢基约长期生态研究计划（Luquillo Long-Term Ecological Research Program）的一部分。此外，波多黎各大学及美国农业部林务局（USDA Forest Service）下属的国际热带林业研究所也提供了额外支持。