Mollusc population abundance monitoring: Fall 2003 mid-marsh and creekbank infaunal and epifaunal mollusc abundance based on collections from GCE marsh, monitoring sites 1-10

This data set is the Fall 2003 estimate of infaunal and epifaunal mollusc abundance at the GCE-LTER marsh sites used for population monitoring. Species abundance was determined by hand-collecting all the infaunal and epifaunal molluscs from within quadrats of known area in 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, counted and measured (size data is reported separately). The counts were converted to number per square meter. Gastropod species are listed first, followed by bivalve species. Size distribution data for these collections may be found in the GCE-LTER data set INV-GCEM-0502a2.

本数据集为2003年秋季针对用于种群监测的GCE-LTER湿地样点的底内与底表软体动物丰度估算结果。于所有样点的中潮滩及溪岸带区域（每个区域设置4个已知面积的样方）内，通过人工采集获取全部底内、底表软体动物，以此确定物种丰度。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，之后完成计数与测量（尺寸数据将单独发布）。计数结果已转换为每平方米的个体数量。数据集先列出腹足类（Gastropod）物种，随后为双壳类（Bivalve）物种。本次采集的尺寸分布数据可在GCE-LTER数据集INV-GCEM-0502a2中查阅。