Abstract
The high diversity of fish species found in Brazilian streams has attracted scientific interest in recent years. However, it is not clear how studies have addressed biodiversity knowledge shortfalls. We conducted a scientometric analysis of stream fish studies in Brazil to identify trends and gaps in how objectives, spatial coverage, and biodiversity knowledge shortfalls have been studied. Our review covered 690 articles published between 1981 and 2019, and we found an increase in the number of publications, the spatial scale of studies, and the number of streams studied. We also found biases in the distribution of publications concerning regions, biomes, basins, and biodiversity knowledge shortfalls. The Southeast region, the Paraná River basin, the Atlantic Forest biome, and the Hutchinsonian shortfall contributed to a greater number of studies while the Northeast region, the Pantanal biome, Parnaíba basin, Western Northeast Atlantic basin, and the Prestonian shortfall were less represented. Therefore, to improve our knowledge about stream fish, we recommend new collection efforts in under-sampled regions and new studies focused on filling less-addressed biodiversity knowledge shortfalls. Moreover, we emphasize the importance of standardized sampling protocols, a complete sharing of data, and an increase in scientific collaboration.
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Acknowledgements
We would like to thank Fundação de Amparo à Pesquisa do Estado de Mato Grosso (FAPEMAT) for granting a Ph.D. Scholarship to the first author (FAPEMAT Notice 002/2015, Process 155509/2015). We are also grateful to Fabrícius Domingos, Vanesa Guimarães, Henrique Giacomini, Eddie Lenza, Edson Fontes, Fabiano Corrêa, and Jean Ortega for valuable suggestions that contributed to the improvement of the manuscript. L. B. Lima was partially financed by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES) Finance Code 001. P. De Marco Júnior and D. P. Lima-Junior are supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (308694/2015-5 and 305923/2020-0 grants, respectively). We acknowledge two anonymous reviewers and associate editor Fernando Mayer Pelicice for constructive criticisms to improved the manuscript.
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Lima, L.B., De Marco Júnior, P. & Lima-Junior, D.P. Trends and gaps in studies of stream-dwelling fish in Brazil. Hydrobiologia 848, 3955–3968 (2021). https://doi.org/10.1007/s10750-021-04616-8
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DOI: https://doi.org/10.1007/s10750-021-04616-8