Historical observations of algal blooms in Mazatlan Bay, Sinaloa, Mexico (1979-2014).
A 35-year record of algal blooms in Mazatlan Bay is reviewed in order to register bloom-forming species and their seasonal presence, duration, degree of toxicity and environmental impact. A total of 202 algal blooms have been recorded and 25 dominant species identified: 6 toxic, 5 harmful and 14 har...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2019-01-01
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| Series: | PLoS ONE |
| Online Access: | https://doi.org/10.1371/journal.pone.0210631 |
| _version_ | 1831761684890386432 |
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| author | Roberto Cortés-Altamirano Rosalba Alonso-Rodríguez David Alberto Salas-de-León |
| author_facet | Roberto Cortés-Altamirano Rosalba Alonso-Rodríguez David Alberto Salas-de-León |
| author_sort | Roberto Cortés-Altamirano |
| collection | DOAJ |
| description | A 35-year record of algal blooms in Mazatlan Bay is reviewed in order to register bloom-forming species and their seasonal presence, duration, degree of toxicity and environmental impact. A total of 202 algal blooms have been recorded and 25 dominant species identified: 6 toxic, 5 harmful and 14 harmless species. A harmless species, Myrionecta rubra, tended to decrease in frequency, while toxic species Gymnodinium catenatum and Margalefidinium polykrikoides showed a clear trend towards an increase in frequency. The number of discoloration days attributable to blooms was highly variable in each year, but a decadal analysis revealed a tendency to increase. The monthly distribution of algal blooms for decades showed two peaks of high frequency, the larger from February to May and the smaller from September to November. The duration of blooms varied from a few days to more than three months; the ephemeral blooms were the most frequent, but in the last decade, the frequency of the longer-lasting blooms has increased. An absence of blooms in 1983-4 and 1992-3 coincided with strong El Niño events, but this pattern was not consistent in subsequent El Niño years. Years with more or fewer discolorations days appear to be associated with cold or warm phases of the Pacific Decadal Oscillation. |
| first_indexed | 2024-12-22T04:53:19Z |
| format | Article |
| id | doaj.art-e1d812fc8da84fbb86dd4a26367a7613 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-22T04:53:19Z |
| publishDate | 2019-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-e1d812fc8da84fbb86dd4a26367a76132022-12-21T18:38:27ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01141e021063110.1371/journal.pone.0210631Historical observations of algal blooms in Mazatlan Bay, Sinaloa, Mexico (1979-2014).Roberto Cortés-AltamiranoRosalba Alonso-RodríguezDavid Alberto Salas-de-LeónA 35-year record of algal blooms in Mazatlan Bay is reviewed in order to register bloom-forming species and their seasonal presence, duration, degree of toxicity and environmental impact. A total of 202 algal blooms have been recorded and 25 dominant species identified: 6 toxic, 5 harmful and 14 harmless species. A harmless species, Myrionecta rubra, tended to decrease in frequency, while toxic species Gymnodinium catenatum and Margalefidinium polykrikoides showed a clear trend towards an increase in frequency. The number of discoloration days attributable to blooms was highly variable in each year, but a decadal analysis revealed a tendency to increase. The monthly distribution of algal blooms for decades showed two peaks of high frequency, the larger from February to May and the smaller from September to November. The duration of blooms varied from a few days to more than three months; the ephemeral blooms were the most frequent, but in the last decade, the frequency of the longer-lasting blooms has increased. An absence of blooms in 1983-4 and 1992-3 coincided with strong El Niño events, but this pattern was not consistent in subsequent El Niño years. Years with more or fewer discolorations days appear to be associated with cold or warm phases of the Pacific Decadal Oscillation.https://doi.org/10.1371/journal.pone.0210631 |
| spellingShingle | Roberto Cortés-Altamirano Rosalba Alonso-Rodríguez David Alberto Salas-de-León Historical observations of algal blooms in Mazatlan Bay, Sinaloa, Mexico (1979-2014). PLoS ONE |
| title | Historical observations of algal blooms in Mazatlan Bay, Sinaloa, Mexico (1979-2014). |
| title_full | Historical observations of algal blooms in Mazatlan Bay, Sinaloa, Mexico (1979-2014). |
| title_fullStr | Historical observations of algal blooms in Mazatlan Bay, Sinaloa, Mexico (1979-2014). |
| title_full_unstemmed | Historical observations of algal blooms in Mazatlan Bay, Sinaloa, Mexico (1979-2014). |
| title_short | Historical observations of algal blooms in Mazatlan Bay, Sinaloa, Mexico (1979-2014). |
| title_sort | historical observations of algal blooms in mazatlan bay sinaloa mexico 1979 2014 |
| url | https://doi.org/10.1371/journal.pone.0210631 |
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