Beta Diversity Assessment of Odonata Communities in Amazonian Streams with Altered Environments
Author:
Silva Samantha Ribeiro1, de Lima Edgar Luiz2, Gonçalves Myckey Kenzy e Silva1, Oliveira-Junior José Max Barbosa3, Dias-Silva Karina4, Juen Leandro1, Brasil Leandro Schlemmer1
Affiliation:
1. Universidade Federal Do Pará/Museu Paraense Emilio Goeldi (UFPA/MPEG) 2. Universidade de Brasília 3. Programa de Pós-Graduação em Sociedade, Programa de Pós-Graduação em Sociedade, Ambiente e Qualidade de Vida (PPGSAQ), Universidade Federal do Oeste do Pará (UFOPA) 4. Universidade Federal do Pará (UFPA)
Abstract
Abstract
Beta diversity has been widely used in studies to understand the spatial distribution patterns of species and to assess the effects of anthropic impacts on aquatic environments. Dissimilarity indices, such as Sorensen and Jaccard, are widely used to calculate beta diversity, and show differences in their way of evaluating and valuing biodiversity components, which result in different patterns. Despite this variation, the efficiency and performance of beta diversity to measure environmental impacts in communities remains unexplored. In this study, we In this study, we evaluate changes in the composition of Odonata species adult in Amazonian streams using different beta diversity indices. The Odonata were sampling in 98 small streams in two regions of the eastern Amazon. We compared the beta diversity of preserved and altered streams in each region using the Sorensen and Jaccard indices. Our results show that all methods used are effective in detecting changes in Odonata species composition when comparing preserved and altered stream communities. However, the Sorensen index was more able to reflect these changes, possibly due to its lower sensitivity to rare species compared to the Jaccard index. Even with a subtle difference in detection power, we should consider it, especially when environmental changes are less pronounced, using methods with greater accuracy increases the probability of detecting the effects of human actions on natural communities.
Publisher
Research Square Platform LLC
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