El Verde Grid invertebrate data

The data set consists of 13 files: (1) abundance data for the walking stick, Lamponius portoricensis, (2) estimates of abundance (Minimum Number Known Alive) for 17 species of terrestrial snails, and (3) 11 files containing data on size and mark-recapture estimates of population size for the snails Caracolus caracolla and Nenia tridens from Wet Season 1995 to Wet Season 2000. Note: MNKA estimates are not always identical to the number of individuals indicated in the Mark-Recapture data, because some individuals (e.g., those that were lost before being marked) had to be excluded from calculations for Mark-Recapture estimates of abundance.

本数据集共计包含13个文件：(1) 步行虫Lamponius portoricensis的种群多度数据；(2) 17种陆生蜗牛的种群多度估计值（最小存活个体数，Minimum Number Known Alive，简称MNKA）；(3) 11个文件，涵盖1995年湿季至2000年湿季期间，蜗牛Caracolus caracolla与Nenia tridens的体型数据，以及基于标记重捕法得到的种群大小估计值。
注：MNKA估计值与标记重捕数据中记录的个体数并不完全一致，这是因为部分个体（例如标记前便已失踪的个体）无法被纳入标记重捕法的多度估计计算流程。