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Spread and persistence of the invasive dinoflagellate Ceratium furcoides (Levander) Langhans through South America: watersheds in Rio Grande do Sul, Brazil

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Abstract

Ceratium furcoides is a dinoflagellate that exhibits invasive behavior in the aquatic ecosystems of South America and has been expanding its range in recent years. In this study, we monitored 151 municipalities in southern Brazil between 2012 and 2019 with the objective of detecting and recording the species’ occurrence and abundance in the state of Rio Grande do Sul, as well as to examine its expansion and persistence pattern. Ceratium furcoides was recorded in 84.1% of the monitored municipalities, in all three of the state’s hydrographic regions (HR). Spatially, the Guaiba HR showed the highest density for the species (10,912 cells mL−1); in temporal scales, 2014 and 2015 displayed density peaks, usually in the summer. The cumulative area invaded by C. furcoides gradually increased, reaching 266,625 km2 in 2018, corresponding to about 94% of the state; however, the highest expansion rate (3142 km year−1) and longest distance covered (40.4 km) occurred in 2012, during its introduction. The expansion varied over the studied years, initially heading toward HR Littoral and Guaiba (between 2012 and 2014), followed by a steady period (2015–2017), and subsequently a progression toward HR Uruguay (2018). The frequency analysis showed that persistence was short in most of the municipalities. The results indicate that local environmental characteristics, especially temperature and precipitation, could be key for the invasion and development of the species. Given its rapid expansion, statewide dispersibility, and extremely large bloom formation, Rio Grande do Sul looks to be C. furcoides’ second home.

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Data availability

The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request.

Abbreviations

CORSAN:

Companhia Riograndense de Saneamento

ETAs:

Water treatment stations

FEPAM:

Fundação Estadual de Proteção Ambiental

FO:

Frequency of occurrence

HB:

Hydrographic basins

HR:

Hydrographic regions

IBGE:

Instituto Brasileiro de Geografia e Estatística

IDW:

Inverse distance weighted

MCP:

Minimum convex polygon

MS:

Meteorological stations

RS:

Rio Grande do Sul

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Acknowledgements

We would like to thank FAPERGS (Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul) and UFRGS (Universidade Federal do Rio Grande do Sul) for the undergraduate fellowship granted to the first author; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior–Brasil (CAPES) for the postgraduate fellowship to the first author; and CORSAN (Companhia Riograndense de Saneamento), through Carla Cristine Müller, Karen Dornelles Scherer and Juliana Karl Frizzo, for providing the data to carry out this study. The English language review was done by Cary Collett. This study was financed, in part, by CAPES–Finance Code 001.

Funding

This work was supported by CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior–Brasil)–Finance Code 001 and funded by PROBIC (Programa Institucional de Bolsas de Iniciação Científica), FAPERGS (Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul), BIC (Bolsas de Iniciação Científica), and UFRGS (Universidade Federal do Rio Grande do Sul).

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Authors

Contributions

RDS: Conceptualization, Methodology, Validation, Formal analysis, Investigation, Data curation, Writing—Original draft, Writing—Review & editing, Visualization; LMR: Methodology, Resources, Data curation; LSC: Conceptualization, Methodology, Validation, Formal analysis, Investigation, Resources, Writing—Review & editing, Funding acquisition, Project administration, Supervision.

Corresponding author

Correspondence to Ruan Dutra da Silva.

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da Silva, R.D., da Rosa, L.M. & de Souza Cardoso, L. Spread and persistence of the invasive dinoflagellate Ceratium furcoides (Levander) Langhans through South America: watersheds in Rio Grande do Sul, Brazil. Aquat Sci 86, 28 (2024). https://doi.org/10.1007/s00027-024-01042-5

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