Impact of Hurricane Ian (2022) on Karenia brevis Bloom on the West Florida Shelf
Abstract Blooms of toxigenic Karenia brevis are a major concern to public health and marine ecosystems on the West Florida Shelf. Hurricanes and tropical storms can discharge huge amounts of terrestrial nutrients into coastal oceans over a short time and have been linked to large plankton blooms, bu...
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Wiley
2025-03-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL113500 |
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| author | Yuren Chen Ming Li |
| author_facet | Yuren Chen Ming Li |
| author_sort | Yuren Chen |
| collection | DOAJ |
| description | Abstract Blooms of toxigenic Karenia brevis are a major concern to public health and marine ecosystems on the West Florida Shelf. Hurricanes and tropical storms can discharge huge amounts of terrestrial nutrients into coastal oceans over a short time and have been linked to large plankton blooms, but the underlying mechanisms for the bloom generation are not well understood. In 2022, Hurricane Ian generated extensive river plumes laden with nutrients, followed by a large K. brevis bloom that lasted for six months. Analysis using a coupled hydrodynamic‐biogeochemical model showed that Hurricane Ian drove the bloom in two ways. First, northerly winds on the western half of Ian generated coastal upwelling and onshore bottom currents that transported subsurface K. brevis cells toward the coast. Second, a substantial amount of the riverine nutrients remained after the initial diatom bloom and were dispersed widely, creating a favorable condition for the slow‐growing K. brevis. |
| format | Article |
| id | doaj-art-a7d430b5aa9d4e5381253d8f9c3a5419 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-a7d430b5aa9d4e5381253d8f9c3a54192025-08-20T03:10:57ZengWileyGeophysical Research Letters0094-82761944-80072025-03-01526n/an/a10.1029/2024GL113500Impact of Hurricane Ian (2022) on Karenia brevis Bloom on the West Florida ShelfYuren Chen0Ming Li1Horn Point Laboratory University of Maryland Center for Environment Science Cambridge MD USAHorn Point Laboratory University of Maryland Center for Environment Science Cambridge MD USAAbstract Blooms of toxigenic Karenia brevis are a major concern to public health and marine ecosystems on the West Florida Shelf. Hurricanes and tropical storms can discharge huge amounts of terrestrial nutrients into coastal oceans over a short time and have been linked to large plankton blooms, but the underlying mechanisms for the bloom generation are not well understood. In 2022, Hurricane Ian generated extensive river plumes laden with nutrients, followed by a large K. brevis bloom that lasted for six months. Analysis using a coupled hydrodynamic‐biogeochemical model showed that Hurricane Ian drove the bloom in two ways. First, northerly winds on the western half of Ian generated coastal upwelling and onshore bottom currents that transported subsurface K. brevis cells toward the coast. Second, a substantial amount of the riverine nutrients remained after the initial diatom bloom and were dispersed widely, creating a favorable condition for the slow‐growing K. brevis.https://doi.org/10.1029/2024GL113500hurricanesharmful algal bloomsnutrient pulseKarenia brevisupwellingcoastal ocean |
| spellingShingle | Yuren Chen Ming Li Impact of Hurricane Ian (2022) on Karenia brevis Bloom on the West Florida Shelf Geophysical Research Letters hurricanes harmful algal blooms nutrient pulse Karenia brevis upwelling coastal ocean |
| title | Impact of Hurricane Ian (2022) on Karenia brevis Bloom on the West Florida Shelf |
| title_full | Impact of Hurricane Ian (2022) on Karenia brevis Bloom on the West Florida Shelf |
| title_fullStr | Impact of Hurricane Ian (2022) on Karenia brevis Bloom on the West Florida Shelf |
| title_full_unstemmed | Impact of Hurricane Ian (2022) on Karenia brevis Bloom on the West Florida Shelf |
| title_short | Impact of Hurricane Ian (2022) on Karenia brevis Bloom on the West Florida Shelf |
| title_sort | impact of hurricane ian 2022 on karenia brevis bloom on the west florida shelf |
| topic | hurricanes harmful algal blooms nutrient pulse Karenia brevis upwelling coastal ocean |
| url | https://doi.org/10.1029/2024GL113500 |
| work_keys_str_mv | AT yurenchen impactofhurricaneian2022onkareniabrevisbloomonthewestfloridashelf AT mingli impactofhurricaneian2022onkareniabrevisbloomonthewestfloridashelf |