Supplement 1. R and WinBUGS code for the mixture model.

File List Rscript.r (md5: d73ea6d5356773558ec3152dad6d5517) Posteriors.csv (md5: 8c2fec2da85cfaed5a6bee8a6e8703ef) Description Rscript.r is a text file that contains R and WinBUGS code for the δ15N(‰) mixture model. Posteriors.csv consists of posterior estimates for number of 15N-labelled seeds in batches of dispersed seeds mapped within the 10-m radius or collected within the 10 to 20-m quarters. Column id holds the id number for each sample with G indicating group and Q identifying the four cardinal quarters, plant is the identity of the focal plant, and Delta is the isotopic delta. The posterior estimates are the mean, sd and percentiles. Rhat and n.eff correspond to Gelman and Rubin's convergence diagnosis (Rhat = 1 at convergence), and the effective sample size for the posteriors (Gelman and Hill 2007).

文件清单：
Rscript.r（MD5值：d73ea6d5356773558ec3152dad6d5517）、Posteriors.csv（MD5值：8c2fec2da85cfaed5a6bee8a6e8703ef）

相关说明：
Rscript.r为文本文件，内含用于δ¹⁵N(‰)混合模型的R语言与WinBUGS代码。
Posteriors.csv包含扩散种子批次中氮15标记种子数量的后验估计值，这些种子要么被绘制于10米半径范围内，要么采集自10至20米的四个象限区域。该文件的id列存储各样本的编号，其中G代表组别，Q用于标识四个基本象限；plant列为目标植株的标识，Delta列为同位素δ值。后验估计值涵盖均值、标准差（standard deviation，缩写sd）与百分位数。Rhat与n.eff分别对应Gelman-Rubin收敛诊断指标（收敛时Rhat=1）以及后验分布的有效样本量，相关方法引自Gelman与Hill 2007。