Alexandrium catenella planktonic cell distribution in the Alaskan Arctic (2018-2019)

During a time of unprecedented ecological change in the Arctic, harmful algal blooms have become an issue of increasing concern. Alexandrium catenella (A. catenella) is a dinoflagellate phytoplankton species which produces toxins known to cause paralytic shellfish poisoning (PSP), inducing sickness in people and marine animals that consume contaminated fish or shellfish. This species is found globally, but the extent and timing of A. catenella blooms in Arctic waters is still being described. This dataset (Alexandrium_AlaskanArctic_WholeCell_2018_2019.csv) includes measurements of Alexandrium catenella cell abundance in water sampled during shipboard surveys in the Northern Bering Sea and Chukchi Sea in late summer of 2018 and 2019 (see methods section for survey details). Water was collected through conductivity, temperature, and depth (CTD) casts as well as from shipboard underway seawater systems, and cell abundances have been paired with concurrent temperature and salinity measurements.

在北极地区正经历前所未有的生态变化之际，有害藻华已成为日益受到关注的环境问题。链状亚历山大藻（Alexandrium catenella，缩写为A. catenella）是一种甲藻浮游植物，其产生的毒素可引发麻痹性贝类中毒（paralytic shellfish poisoning, PSP），会导致误食受污染鱼类或贝类的人类与海洋动物出现中毒症状。该物种在全球范围内均有分布，但北极海域内链状亚历山大藻藻华的发生范围与时间节点仍有待进一步明确。本数据集（Alexandrium_AlaskanArctic_WholeCell_2018_2019.csv）收录了2018年与2019年夏末，在北白令海与楚科奇海开展船基调查期间采集的水样中链状亚历山大藻的细胞丰度数据，调查细节参见方法部分。水样通过温盐深（conductivity, temperature, and depth, CTD）剖面采水以及船载连续海水采样系统获取，细胞丰度数据已与同步测得的温度与盐度数据完成匹配关联。