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<p>Species invasions are among the most significant ecological processes affecting aquatic systems worldwide. <i>Ceratium</i> Schrank 1793 is a genus of freshwater dinoflagellates that has reached a global distribution and is considered invasive in several aquatic environments. This study introduces a global database of <i>Ceratium</i> records, which comprises 677 occurrences published from 1881 to 2023, along with 42 new ones. These records represent a substantial portion of the published literature on the genus, first described in 1793, or under its basionym <i>Bursaria</i> in 1773. To visualize these records along with associated environmental data, we developed an interactive, updatable web platform named “<i>Ceratium</i> Tracker” (<Emphasis Type="Underline">Ceratium Tracker</Emphasis>). To assess potential spread, we modeled the global environmental suitability of the two most frequent species, <i>Ceratium furcoides</i> and <i>Ceratium hirundinella</i>, using all occurrence records available in the <i>Ceratium</i> Tracker database. Global models revealed high environmental suitability not only within their native European range but also in South America, consistent with the marked increase in records from the continent. We then modeled their potential distribution specifically across South America. Minimum temperature and soil moisture were the most influential variables determining the potential distribution of <i>C. furcoides</i>, while evapotranspiration was a key factor for <i>C. hirundinella</i>. The susceptibility areas for <i>C. furcoides</i> were concentrated along the Brazilian coast and neighboring countries, while those for <i>C. hirundinella</i> were located in western Argentina and Chile. Finally, we found that <i>C. hirundinella</i> began its expansion earlier in time but covered a smaller area than <i>C. furcoides</i>, which invaded approximately 70% of South America within a decade (2002–2012). Overall, this study provides the first comprehensive assessment of the global distribution and potential expansion of the genus <i>Ceratium</i> using species distribution models. In addition, it introduces an interactive, updatable web platform that enables users to visualize, explore, and continuously contribute new occurrence records of this genus worldwide.</p>

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Mapping the global distribution and predicting the potential expansion of Ceratium Schrank 1793 (Dinophyceae): development of an interactive platform

  • 期刊论文

  • 发表日期：

    2025年11月12日

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  • Victoria Accattatis,
  • Micaela Milano,
  • Ruan Dutra da Silva,
  • Paula Huber,
  • Sebastian Metz,
  • António J. Calado,
  • Sandra C. Craveiro,
  • Marina Forastier,
  • Claudia Piccini,
  • Luciana de Souza Cardoso,
  • Melina Devercelli

摘要

Species invasions are among the most significant ecological processes affecting aquatic systems worldwide. Ceratium Schrank 1793 is a genus of freshwater dinoflagellates that has reached a global distribution and is considered invasive in several aquatic environments. This study introduces a global database of Ceratium records, which comprises 677 occurrences published from 1881 to 2023, along with 42 new ones. These records represent a substantial portion of the published literature on the genus, first described in 1793, or under its basionym Bursaria in 1773. To visualize these records along with associated environmental data, we developed an interactive, updatable web platform named “Ceratium Tracker” (Ceratium Tracker). To assess potential spread, we modeled the global environmental suitability of the two most frequent species, Ceratium furcoides and Ceratium hirundinella, using all occurrence records available in the Ceratium Tracker database. Global models revealed high environmental suitability not only within their native European range but also in South America, consistent with the marked increase in records from the continent. We then modeled their potential distribution specifically across South America. Minimum temperature and soil moisture were the most influential variables determining the potential distribution of C. furcoides, while evapotranspiration was a key factor for C. hirundinella. The susceptibility areas for C. furcoides were concentrated along the Brazilian coast and neighboring countries, while those for C. hirundinella were located in western Argentina and Chile. Finally, we found that C. hirundinella began its expansion earlier in time but covered a smaller area than C. furcoides, which invaded approximately 70% of South America within a decade (2002–2012). Overall, this study provides the first comprehensive assessment of the global distribution and potential expansion of the genus Ceratium using species distribution models. In addition, it introduces an interactive, updatable web platform that enables users to visualize, explore, and continuously contribute new occurrence records of this genus worldwide.