Tracking a large-scale and highly toxic Arctic algal bloom: rapid detection and risk communication.

ABSTRACT: In recent years, blooms of the neurotoxic dinoflagellate Alexandrium catenella have been documented in Pacific Arctic waters, and the paralytic shellfish toxins (PSTs) that this species produces have been detected throughout the food web. These observations have raised significant concerns about the role that harmful algal blooms (HABs) will play in a rapidly changing Arctic. During a research cruise in summer 2022, a massive bloom of A. catenella was detected in real time as it was advected through the Bering Strait region. The bloom was exceptional in both spatial scale and density, extending >600 km latitudinally, reaching concentrations >174,000 cells L^-1, and producing high-potency PST congeners. Throughout the event, coastal stakeholders in the region were en

SUBMITTER: Fachon E 

PROVIDER: S-EPMC11801174 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature