Abstract

The mass development of diatoms Dactyliosolen fragilissimus and Cerataulina pelagica, atypical algae for the southeastern Baltic Sea (SEB) water area, were registered along the Sambia peninsula coastline in the middle of October 2020. Both species were found in the coastal zone off the western and northern coast of the Sambia peninsula from the Baltic Strait to port Pionerskiy at depths reaching 32 m. In early November 2021, C. pelagica bloomed both in the shallow coastal zone of the northern coast of the Sambia peninsula and in the deepwater zone of the SEB. The biomass of this species reached 2.8 g/m³. Both diatom species were abundant within the entire Russian exclusive economic zone (EEZ). The prevailing hydrological situation during the study period probably facilitated the penetration of the species into the study area by surface transport from the Arkona Basin.

中文翻译：

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2020-2021年波罗的海东南部秋季浮游植物中Dactyliosolen fragilissimus和Cerataulina pelagica的空间分布

摘要

2020 年 10 月中旬，桑比亚半岛海岸线发现了波罗的海东南部 (SEB) 水域的非典型藻类Dactyliosolen fragilissimus和Cerataulina pelagica的大量繁殖。这两种物种均在西部和西部沿海地区发现。桑比亚半岛北部海岸，从波罗的海海峡到皮奥涅尔斯基港，深度达 32 m。2021年11月上旬，桑比亚半岛北部海岸的浅水区和SEB的深水区都出现了C. pelagica的开花。该物种的生物量达到2.8 g/m ³。这两种硅藻在整个俄罗斯专属经济区 (EEZ) 内都很丰富。研究期间普遍的水文状况可能促进了该物种通过阿科纳盆地的地面运输渗透到研究区域。