Abstract
Interspecies interactions have a profound influence on spatial distribution of coexisting microbial species. We explored whether spatial variance of species distribution (SVSD) predicts the degree of interspecies interactions within a microbial metacommunity. Simulations were used to determine the relationships from random, lake, soil, and biofilm metacommunity datasets (1,000 times). All of the bacterial datasets showed a negative correlation between the habitat breadth (inverse to SVSD) and the numbers of total, positive, and negative interspecies interactions (P < 0.05); the only exception was the relationship between habitat breadth and negative interactions in the biofilm dataset. The random dataset had no significant relationships (P > 0.05). We repeated the simulations to determine the degree of correlation and reproducibility (100 times). Habitat breadth was negatively correlated with the total and positive interactions in all of the real datasets (P < 0.05), and the negative relationships persisted across repetitions. Despite variability in the slope of total interactions, the slope values of positive interactions were similar for the real datasets (− 19.9, − 19.2, and − 25.8 for lake, soil, and biofilm, respectively). In conclusion, our results demonstrate the patterns of species interaction–distribution and show that interspecies interactions are positively correlated with the SVSD.
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This study was supported by the Basic Science Research Program of the National Research Foundation of Korea, which is funded by the Ministry of Education (2018R1D1A1B07048872).
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Jeong, SY., Kim, T.G. Spatial Variance of Species Distribution Predicts the Interspecies Interactions within a Microbial Metacommunity. Microb Ecol 81, 549–552 (2021). https://doi.org/10.1007/s00248-020-01603-9
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DOI: https://doi.org/10.1007/s00248-020-01603-9