ArticleOecologia2022
Direct and indirect effects of geographic and environmental factors on ant beta diversity across Amazon basin.
Article in Oecologia, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed.
- Saving the Mahachai Betta: Genetic Erosion and Conservation Priorities Under Urbanization Pressure.Animals : an open access journal from MDPI · 2025Article
- Habitat fragmentation increases specialization of multi-trophic interactions by high species turnover.Proceedings. Biological sciences · 2023Article
- Induced drought strongly affects richness and composition of ground-dwelling ants in the eastern Amazon.Oecologia · 2023Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
Understanding the direct and indirect effects of niche and neutral processes in structuring species diversity is particularly challenging because environmental factors are often geographically structured. Here, we used Structural Equation Modeling to quantify direct and indirect effects of geographic distance, the Amazon River's opposite margins, and environmental differences in temperature, precipitation, and vegetation density (Normalized Difference Vegetation Index-NDVI) on ant beta diversity (Jaccard's dissimilarity) across Amazon basin. We used a comprehensive survey of ground-dwelling ant species from 126 plots distributed across eight sampling sites along a broad environmental gradient. We found that geographic distance and NDVI differences were the major direct predictors of ant composition dissimilarity. The major indirect effect was that of temperature through NDVI, whereas precipitation neither had direct or indirect detectable effects on beta diversity. Thus, ant compositional dissimilarity seems to be mainly driven by a combination of isolation by distance (through dispersal limitation) and selection imposed by vegetation density, and indirectly, by temperature. Our results suggest that neutral and niche processes have been similarly crucial in driving the current beta diversity patterns of Amazonian ground-dwelling ants.
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Registered trials
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