The combination of highly equipped smartphones, with the increased use of social media, has offered a wide database. Given this, citizen science can be used to record and monitor non‐native fish fauna, target new samples and collaborate with monitoring occurrences in new areas. We aimed to demonstrate the efficiency of social media in citizen science as a tool to cooperate with monitoring studies of non‐native species. Consequently, we determined the occurrence points of S. brasiliensis in the Iguaçu River basin, indicating sites of greatest occurrence and analyzing the impact of the invasion on the native fauna of the basin. Files and information available on the YouTube® and Facebook® media platforms were used as data, was carried out from April 2019 to April 2020. The results were 40 records, 22 videos obtained from Youtube, and seven videos and 11 photos from Facebook, the oldest record was from April 2013, while the largest number of posts was in 2016. Fish records available from online platforms can reveal the occurrence and progressive dispersion of species, in the context of biological invasions, these tools can be of great value in studies that aim to follow the progress of introduced species, contributing by helping to direct new sampling programs and corroborating the occurrence of species in new areas in conjunction with standard monitoring programs. Based on citizen science records, it was possible to update the range of occurrence of the non‐native S. brasiliensis in the Iguaçu River basin, cooperating with scientific knowledge. Innovative monitoring and control measures are necessary to deal with invasive species, with citizen science proving to be competent for determining the occurrence of species and showing promise in the entire field of ichthyology.
Although animal vectors facilitate algal dispersal, the specific role of individual vectors in the temporal dynamics of algal community establishment remains unclear. In this study, we investigated the effects of wind and animal vectors, specifically amphibians and odonates, on temporal variation in algal composition and abundance. We conducted a 33-day field experiment in 2018 with four treatments that included different propagule additives. We identified 74 algal species from 11 taxonomic groups, with Chlorophyceae being the most abundant. Species richness and density varied significantly after day 12. Similarity in species composition and density increased over time in all treatments, with more species added at the beginning of the experiment and more species lost at the end. Our results suggest that different vectors had different effects on the local beta-temporal diversity of algal communities. The influence of morphological differences among vectors and the number of dispersal vectors on the variation of beta diversity and community characteristics was observed. We found that dissimilarity changed more rapidly when there were multiple vectors capable of dispersing more individuals and species. The effectiveness of algal dispersal by different animal vectors and its influence on the temporal dynamics of algal communities can vary in different environments and over longer periods of time. Overall, our study highlights the importance of understanding dispersal control and its relationship to the temporal dynamics of algal communities
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