Mollusc population size distribution monitoring: Fall 2007 mid-marsh and creekbank infaunal and epifaunal mollusc size distributions based on collections from GCE marsh monitoring sites 1-10

This data set is the Fall 2007 report of infaunal and epifaunal mollusc species' size distributions at the GCE-LTER marsh sites used for population monitoring. Infaunal and epifaunal molluscs were hand-collected from within quadrats of known area from mid-marsh and creekbank zones (n = 4 quadrats per zone) at all sites. The molluscs were returned to the lab, preserved in ethanol, measured and counted (count data is reported separately). Length of each measurable individual was determined using calipers or an ocular micrometer mounted in a stereomicroscope. Species abundance and density data for these collections may be found in the GCE-LTER data set INV-GCEM-0804a1. Numbers of individuals of each species in the abundance data file may not correspond exactly to the numbers of individuals in the size data file because some individuals may not have been measureable.本数据集为2007年秋季报告数据集，聚焦用于种群监测的GCE-LTER湿地样点处的内栖（infaunal）与表栖（epifaunal）软体动物物种体型分布特征。所有样点的潮间带中部与溪岸带区域内，研究人员采用手采方式，从已知面积的样方（每个区域设置4个样方，n=4）中采集内栖与表栖软体动物。采集得到的软体动物被带回实验室，以乙醇固定保存，随后开展体长测量与个体计数工作（个体计数数据将单独发布）。每只可测量个体的体长通过游标卡尺或安装于体视显微镜的目镜测微尺进行测定。本次采集的物种丰度与密度数据可于GCE-LTER数据集INV-GCEM-0804a1中获取。由于部分个体无法进行测量，丰度数据文件中各物种的个体数量与体型数据文件中的对应个体数量可能不完全一致。