Leaf Pressure Volume Data in Caxiuana and Tapajos National Forest, Para, Brazil (2011)

This dataset contains pressure volume curve measurements on leaves of canopy trees from the from the Caxiuana and Tapajos National Forests, Para, Brazil. Tapajos samples were harvested from the km 67 forested area, which is adjacent to the decommissioned throughfall exclusion drought experimental plot. Caxiuana samples were harvested from trees growing in the throughfall exclusion plots. Data were collected in 2011. The attached zip file contains two CSV files, one from each site, with the following information: date of measurement, site ID, plot ID, tree ID (species, tree tag #), leaf area, fresh weight, relative weight, leaf water potential, and leaf water loss. P-V curve parameters (turgor loss point, osmotic potential, and bulk modulus of elasticity) can be found in Powell et al. (2017) Differences in xylem cavitation resistance and leaf hydraulic traits explain differences in drought tolerance among mature Amazon rainforest trees. Global Change Biology. This dataset was originally published on the NGEE Tropics Archive and is being mirrored on ESS-DIVE for long-term archival Acknowledgement: Collection of these data was made possible through the support of the Museu Paraense Emilio Goeldi, the LBA office in Santarém, the National Science Foundation Doctoral Dissertation Improvement Grant (NSF award # DEB-1110540), the National Science Foundation Partnership for International Research and Education in Amazon Climate Interactions grant (NSF award #OISE-0730305), the Andes-Amazon Initiative of The Gordon and Betty Moore Foundation, the Department of Organismic and Evolutionary Biology, Harvard University.本数据集包含巴西帕拉州卡舒埃纳（Caxiuana）和塔帕若斯（Tapajos）国家森林冠层树木叶片的压力-体积（Pressure-Volume, P-V）曲线测量数据。其中塔帕若斯站点的样本采自67公里林区，该区域毗邻已停用的穿透雨排除干旱试验样地；卡舒埃纳站点的样本采自穿透雨排除样地内生长的树木。数据采集工作于2011年完成。随附的压缩包包含两个CSV文件，分别对应两个研究站点，文件内含以下信息：测量日期、站点编号、样地编号、树木编号（含物种信息、树木标签号）、叶面积、鲜重、相对重量、叶水势以及叶片失水量。压力-体积曲线相关参数（膨压丧失点、渗透势、体积弹性模量）可参见Powell等人2017年发表于《全球变化生物学》（Global Change Biology）的研究论文《木质部抗空化特性与叶片水力性状差异解释亚马逊成熟雨林树木耐旱性的差异》。本数据集最初发布于NGEE热带地区档案馆（NGEE Tropics Archive），现由ESS-DIVE镜像存储以实现长期归档。致谢：本数据的采集工作得到了以下机构的支持：帕拉州埃米利奥·戈尔迪博物馆（Museu Paraense Emilio Goeldi）、圣塔伦的LBA项目办公室、美国国家科学基金会博士论文改进基金（NSF资助编号：DEB-1110540）、美国国家科学基金会亚马逊气候相互作用国际研究与教育合作项目基金（NSF资助编号：OISE-0730305）、戈登和贝蒂·摩尔基金会安第斯-亚马逊倡议项目，以及哈佛大学有机体与进化生物学系。