Mollusc population abundance monitoring: Fall 2002 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 2002 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-0412b2.

本数据集为2002年秋季对用于种群监测的GCE-LTER滨海湿地站点内底内栖与表栖软体动物丰度的估算结果。物种丰度的测定方式为：在所有站点的潮间带中部与溪岸带内，从已知面积的样方中手工采集所有底内栖与表栖软体动物，每个区域设置4个样方（n=4）。采集所得的软体动物被带回实验室，经福尔马林固定后转移至乙醇中保存，随后进行计数与测量（尺寸数据将单独报告）。计数结果被换算为每平方米的个体数量。腹足类物种位列首位，随后为双壳类物种。本次采集的尺寸分布数据可于GCE-LTER数据集INV-GCEM-0412b2中查阅。