Color orthomosaics of the 50-ha plot on Barro Colorado Island, Panama, for 2014-2019

3-7 cm resolution color (RGB, red-green-blue) orthomosaics of the 50-ha Smithsonian ForestGEO plot on Barro Colorado Island, Panama, for 47 dates from 2 October 2014 to 28 November 2019. Orthomosaics were produced from photogrammetry processing of drone-acquired imagery using Agisoft Metashape (previously Agisoft Photoscan) software. Orthomosaics were horizontally aligned to the first set (2 October 2014) using the centers of Attalea palms and other tree crowns as manual control points.<br>These data are licensed under CC BY, meaning use of the data is allowed so long as attribution is given via citation. These data should be cited either as an individual dataset or as part of the larger collection: Garcia, Milton, Jonathan P. Dandois, Raquel F. Araujo, Samuel Grubinger, and Helene C. Muller-Landau. 2021. Color orthomosaics of the 50-ha plot on Barro Colorado Island, Panama, for 2014-2019. Smithsonian Figshare DOI: 10.25573/data.16869259orAraujo, Raquel F., Samuel Grubinger, Milton Garcia, Jonathan P. Dandois, and Helene C. Muller-Landau. 2021. Collection of datasets: Strong temporal variation in treefall and branchfall rates in a tropical forest is related to extreme rainfall: results from 5 years of monthly drone data for a 50-ha plot. Smithsonian Figshare. DOI: 10.25573/data.c.5389043<br>These datasets were used in the following peer-reviewed journal article:Araujo, R. F., S. Grubinger, C. H. S. Celes, R. I. Negrón-Juárez, M. Garcia, J. P. Dandois, and H. C. Muller-Landau. 2021. Strong temporal variation in treefall and branchfall rates in a tropical forest is related to extreme rainfall: results from 5 years of monthly drone data for a 50-ha plot. Biogeosciences.<br>The code used to analyze these data for this article are available in GitHub, at https://github.com/Raquel-Araujo/gap_dynamics_BCI50ha<br><br>Author contribution for datasets for 2014-2015: Helene C. Muller-Landau conceived the research, wrote the grant proposal that funded the research, and designed data collection. Jonathan Dandois constructed the drones, led drone data collection, performed photogrammetry processing, and did preliminary horizontal alignment. Samuel Grubinger finalized horizontal and vertical alignment and identified canopy disturbances. Raquel F. Araujo revised canopy disturbances and classified them as branchfalls, treefalls, or standing dead trees. Author contribution for datasets for 2016-2019: Helene C. Muller-Landau conceived the research and designed the data collection. Milton Garcia led drone data collection and processed drone imagery. Raquel F. Araujo performed horizontal and vertical alignment, identified canopy disturbances, and classified disturbances as branchfalls, treefalls, or standing dead trees. Acknowledgments: We thank Marino Ramirez, Pablo Ramos, Paulino Villareal and others for assistance with drone data collection; and Milton Solano for assistance with data processing and organization. We gratefully acknowledge the financial support of the Smithsonian Institution Competitive Grants Program for Science; the Next Generation Ecosystem Experiments-Tropics, funded by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research; and the Smithsonian Tropical Research Institute fellowship program. Kristina Anderson-Teixeira, Stephanie Bolman, Richard Condit, Stuart Davies, Matteo Detto, Jefferson Hall, Patrick Jansen, Stefan Schnitzer, Edmund Tanner, and S. Joseph Wright were co-PIs on the original Smithsonian proposal, and we thank them for their contributions to the proposal and input on the research.<br>

巴拿马巴罗科罗拉多岛史密森尼ForestGEO 50公顷样地的3-7厘米分辨率彩色（RGB，红-绿-蓝）正射影像镶嵌图（orthomosaics），涵盖2014年10月2日至2019年11月28日期间的47个日期。正射影像镶嵌图通过Agisoft Metashape（原Agisoft Photoscan）软件对无人机获取的影像进行摄影测量（photogrammetry）处理生成。正射影像镶嵌图以2014年10月2日的第一组数据为基准进行水平对齐，使用Attalea棕榈树和其他树冠的中心作为手动控制点。

这些数据采用CC BY许可证授权，即允许使用数据，但需通过引用注明出处。这些数据可作为独立数据集或更大集合的一部分引用：Garcia, Milton, Jonathan P. Dandois, Raquel F. Araujo, Samuel Grubinger, and Helene C. Muller-Landau. 2021. Color orthomosaics of the 50-ha plot on Barro Colorado Island, Panama, for 2014-2019. Smithsonian Figshare DOI: 10.25573/data.16869259；或Araujo, Raquel F., Samuel Grubinger, Milton Garcia, Jonathan P. Dandois, and Helene C. Muller-Landau. 2021. Collection of datasets: Strong temporal variation in treefall and branchfall rates in a tropical forest is related to extreme rainfall: results from 5 years of monthly drone data for a 50-ha plot. Smithsonian Figshare. DOI: 10.25573/data.c.5389043

这些数据集已用于以下同行评审期刊文章：Araujo, R. F., S. Grubinger, C. H. S. Celes, R. I. Negrón-Juárez, M. Garcia, J. P. Dandois, and H. C. Muller-Landau. 2021. 热带森林中树木倒伏和枝条折断率的强烈时间变化与极端降雨相关：基于50公顷样地5年月度无人机数据的结果。Biogeosciences.

本文用于分析这些数据的代码可在GitHub获取，地址为https://github.com/Raquel-Araujo/gap_dynamics_BCI50ha

2014-2015年数据集作者贡献：Helene C. Muller-Landau构思研究、撰写资助本研究的科研项目申请书并设计数据采集方案；Jonathan Dandois组装无人机、主导无人机数据采集、进行摄影测量处理及初步水平对齐；Samuel Grubinger完成水平和垂直对齐并识别冠层干扰；Raquel F. Araujo修订冠层干扰并将其分类为枝条折断、树木倒伏或枯立木。2016-2019年数据集作者贡献：Helene C. Muller-Landau构思研究并设计数据采集方案；Milton Garcia主导无人机数据采集并处理无人机影像；Raquel F. Araujo进行水平和垂直对齐、识别冠层干扰并将其分类为枝条折断、树木倒伏或枯立木。

致谢：感谢Marino Ramirez、Pablo Ramos、Paulino Villareal及其他人员协助无人机数据采集；感谢Milton Solano协助数据处理与组织。衷心感谢史密森尼学会科学竞争资助项目、由美国能源部科学办公室生物与环境研究办公室资助的下一代生态系统实验-热带项目，以及史密森尼热带研究所奖学金项目的资金支持。Kristina Anderson-Teixeira、Stephanie Bolman、Richard Condit、Stuart Davies、Matteo Detto、Jefferson Hall、Patrick Jansen、Stefan Schnitzer、Edmund Tanner和S. Joseph Wright是史密森尼原始提案的共同PI，感谢他们对提案的贡献及对研究的投入。