Biomass parameters and elemental composition of the non-indigenous hydromedusa Craspedacusta sowerbii in Canada and the USA@en

The freshwater hydrozoan Craspedacusta sowerbii has invaded exotic habitats around the world. This data set contains information on the water and organic content, as well as elemental composition (carbon, nitrogen, phosphorus) of jellyfish sampled in Canada and the USA in August and September 2021. Specimens (N = 1385) were collected from eight lakes in British Columbia and one lake in Virginia using dip net, cast net, and jars from near the surface (top 1 m). Jellyfish were sexed based on light microscopic observation of their gametes. Specimens collected from British Columbia were exclusively male, whereas specimens from Virginia were identified as females.淡水水螅虫类物种索氏桃花水母（Craspedacusta sowerbii）已在全球各地的外来生境中成功入侵。本数据集涵盖2021年8月至9月于加拿大与美国采集的该水母样本的水分、有机物含量，以及元素组成（碳、氮、磷）相关信息。本次采集共获得1385份样本，通过抄网、抛网及广口瓶，于近表层（1米以内水深）采集自不列颠哥伦比亚省的8处湖泊与弗吉尼亚州的1处湖泊。研究人员通过光学显微镜观察配子的方式对水母样本进行性别判定，其中不列颠哥伦比亚省采集的样本均为雄性，而弗吉尼亚州的样本均被鉴定为雌性。