ArticleFrontiers in microbiology2023
Testing the passive sampling hypothesis: The role of dispersal in shaping microbial species-area relationship.
Article in Frontiers in microbiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Proximity to forests, fire and plantation characteristics influence understory plant species richness more than phylogenetic diversity in African mahogany plantations.Scientific reports · 2025Article
- Founders Can Increase Determinism of Community Assembly.Ecology and evolution · 2025Article
- Interpreting Microbial Species-Area Relationships: Effects of Sequence Data Processing Algorithms and Fitting Models.Microorganisms · 2025Article
- Extinction drives a discontinuous temporal pattern of species-area relationships in a microbial microcosm system.Scientific reports · 2023Article
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4 authors.
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Abstract
Dispersal is one of the key processes determining biodiversity. The passive sampling hypothesis, which emphasizes dispersal processes, suggests that larger habitats receive more species from the species pool as the main mechanism leading to more species in larger habitats than in smaller habitats (i.e., species-area relationships). However, the specific mechanisms by which dispersion shapes biodiversity still need to be discovered due to the difficulties of quantifying dispersal and the influence of multiple factors. Solving the above problem with a designed experiment is necessary to test the passive sampling hypothesis. This study designed a passive sampling experiment using sterile filter paper to quantify the microbial diffusion process, excluding the effects of pure sampling effects, habitat heterogeneity, and extinction processes. The results of high-throughput sequencing showed that a larger filter paper could receive more colonists, and the passive sampling hypothesis of SAR was confirmed. Dispersal shaped SAR by increasing species richness, especially rare species, and increasing the species replacement rate between habitats. These two processes are the mechanisms by which dispersal shapes biodiversity patterns. Compared with the results of this study, the commonly used mathematical model of passive sampling was able to predict the richness of non-rare species accurately but underestimated the richness of rare species. Underestimating rare species by mathematical models of passive sampling is more severe in small habitats. These findings provide new insights into the study of dispersal processes and the mechanism of species-area relationships.
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