Comparative analysis of nutrient concentrations in generalist and specialist tree species and soils, Manaus, Brazil

This dataset was collected near Manaus, Brazil, at ZF-2 site, inside the North-South transect plots from 20221011 to 20221020. Measurements were made on specialists and generalist tree species along topographic gradient (in upland high-clay content soils of plateaus and high sandy content and partially flooded soils of valleys). We selected nine species (with four replicates each, totaling 35 individuals) occurring in different topographic positions: three plateau specialists, three valley specialists, and three generalists, where leaf and trunk samples were collected from each individual, and soil samples for carbon and nutrient analysis and quantification. Three soil pits were opened around each sample tree, about one meter apart (total of 105 soil pits each 60-cm deep), where soil samples were collected at four depths: 0-5, 5-10, 10-30 and 30-50 cm. In each of the three pits around each tree, one single sample was taken at each depth and combined to obtain a composite sample per depth per individual tree (35 trees × 4 depths = 140 soil samples). The files “Plant_Nutrient_Concentrations_NS_Transect_Manaus.csv” and “Soil_Nutrient_Concentrations_NS_Transect_Manaus.csv” contain the nutrient concentration data from plant and soil material, respectively. Additionally, the file “Sample_Info.csv” contains details about each variable including units and data type. The file “Species_Info.csv” includes information about each sampled individual, such as species, family, diameter at the breast height (DBH), and more. The dataset is ready to be used in any programming language like python or R. This dataset was originally published on the NGEE Tropics Archive and is being mirrored on ESS-DIVE for long-term archival Acknowledgement: Funding for NGEE-Tropics data resources was provided by the U.S. Department of Energy Office of Science, Office of Biological and Environmental Research.

本数据集于2022年10月11日至2022年10月20日在巴西马瑙斯附近的ZF-2站点、南北样带（North-South transect）样地内采集。沿地形梯度（包括高原地带高黏土含量的旱地土壤，以及河谷地带高砂质含量且部分淹水的土壤）对特有树种和广适性树种进行了测量。我们选取了9个分布于不同地形位置的树种（每个树种4个重复，共35个个体）：3种高原特有树种、3种河谷特有树种和3种广适性树种；从每个个体采集叶片和树干样本，并采集土壤样本用于碳和养分的分析与定量。在每棵样树周围开挖3个间距约1米的土壤剖面坑（共105个，每个深度60厘米），并在4个深度层（0-5厘米、5-10厘米、10-30厘米和30-50厘米）采集土壤样本。文件"Plant_Nutrient_Concentrations_NS_Transect_Manaus.csv"和"Soil_Nutrient_Concentrations_NS_Transect_Manaus.csv"分别包含植物和土壤材料的养分浓度数据。此外，文件"Sample_Info.csv"包含各变量的详细信息，包括单位和数据类型。文件"Species_Info.csv"包含每个采样个体的信息，例如树种、科属、胸径（diameter at the breast height，DBH）等。本数据集可直接用于Python、R等任意编程语言。本数据集最初发布于NGEE Tropics Archive，并在ESS-DIVE上进行镜像以长期存档。致谢：NGEE-Tropics数据资源的资金由美国能源部科学办公室生物与环境研究局提供。