Mollusc population size distribution monitoring: Fall 2006 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 2006 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, fixed in fomalin, transferred to and preserved in ethanol, measured and counted (count data is reported separately). Length of each measurable individual was determined using calipers or small etched rulers under a stereomicroscope. Species abundance and density data for these collections may be found in the GCE-LTER data set INV-GCEM-0705c1. 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2006年秋季的调查报告，针对用于种群监测的GCE-LTER盐沼湿地站点中的底内与底上软体动物物种的体型分布展开研究。研究人员在所有站点的盐沼中部与潮沟岸带区域，使用已知面积的样方（每个区域设置4个样方）手工采集底内及底上软体动物。采集得到的软体动物被带回实验室，先用福尔马林固定，随后转移至乙醇中保存，之后对其进行测量与计数（计数数据将单独发布）。在体式显微镜下，使用游标卡尺或带有刻度的小型蚀刻直尺，对每只可测量个体的体长进行测定。本次采集的物种丰度与密度数据可从GCE-LTER数据集INV-GCEM-0705c1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个体数量可能不完全一致。