Abstract：
A bloom of Karenia papilionacea that occurred along the Delaware coast in late summer of 2007 was the first Karenia bloom reported on the Delmarva Peninsula (Delaware, Maryland, and Virginia, USA). Limited spatial and temporal monitoring conducted by state agencies and citizen science groups since 2007 have documented that several Karenia species are an annual component of the coastal phytoplankton community along the Delmarva Peninsula, often present at background to low concentrations (100 to 10,000 cells L-1). Blooms of Karenia (> 105 cells L-1) occurred in 2010, 2016, 2018, and 2019 in different areas along the Delmarva Peninsula coast. In late summer and early autumn of 2017, the lower Chesapeake Bay experienced a K. papilionacea bloom, the first recorded in Bay waters. Blooms typically occurred summer into autumn but were not monospecific; rather, they were dominated by either K. mikimotoi or K. papilionacea, with K. selliformis, K. brevis-like cells, and an undescribed Karenia species also present. Cell concentrations during these mid-Atlantic Karenia spp. blooms equalled concentrations reported for other Karenia blooms. However, the negative impacts to environmental and human health often associated with Karenia red tides were not observed. The data compiled here report on the presence of multiple Karenia species in coastal waters of the Delmarva Peninsula detected through routine monitoring and opportunistic sampling conducted between 2007 and 2022, as well as findings from research cruises undertaken in 2018 and 2019. These data should be used as a baseline for future phytoplankton community analyses supporting coastal HAB monitoring programs.
摘要：
2007年夏末在特拉华州海岸发生的卡列尼亚花花是在德尔马瓦半岛报道的第一次卡列尼亚花（特拉华州，马里兰,和弗吉尼亚,美国）。自2007年以来，国家机构和公民科学团体进行的有限的时空监测表明，几种卡列尼亚物种是德尔马瓦半岛沿岸浮游植物群落的年度组成部分，通常以低浓度（100至10,000个细胞L-1）的背景存在。2010年，2016年，2018年和2019年在德尔马瓦半岛沿岸的不同地区发生了卡列尼亚（>105个细胞L-1）的绽放。在2017年夏末和初秋，切萨皮克湾下游经历了K.papilionacea开花，第一个记录在海湾水域。开花通常发生在夏天到秋天，但不是单一的；相反，它们以K.mikimootoi或K.papilionacea为主，与K.selliformis，K.短肌样细胞，还有一种未描述的卡列尼亚种。这些大西洋中部卡列尼亚种的细胞浓度。花朵的浓度等于其他卡列尼亚花朵的报告浓度。然而,未观察到通常与卡伦尼亚赤潮相关的对环境和人类健康的负面影响。这里收集的数据报告了通过2007年至2022年进行的常规监测和机会采样以及2018年和2019年进行的研究航行发现的德尔马瓦半岛沿海水域中存在多种卡列尼亚物种。这些数据应用作未来浮游植物群落分析的基线，以支持沿海HAB监测计划。
