Survey of adult and juvenile periwinkle snail (Littoraria irrorata) density in mid-marsh and creekbank plots at GCE LTER study sites in October 2022.

To characterize spatial variation in the adult and juvenile density of periwinkle snails, Littoraria irrorata, within two zones in the salt marsh, the mid-marsh and creekbank, and across a gradient in salinity and distance to ocean, we surveyed snail density in October 2022. In each marsh zone at each GCE LTER permanent monitoring site, we counted the number of adult and juvenile snails in 8 creekbank and 12 mid-marsh replicate quadrats.

为表征盐沼内两个生境带（盐沼中带与溪岸带）以及沿盐度、距海距离梯度分布时，细纹滨螺（Littoraria irrorata）成体与幼体的密度空间变异特征，本研究于2022年10月开展了滨螺密度调查。在各GCE LTER永久监测站点的每个盐沼生境带中，研究人员分别对8个溪岸带重复样方与12个盐沼中带重复样方内的成体及幼体滨螺数量进行了计数。