We evaluated the network of interactions of four different populations of the gracile mouse opossum (Gracilinanus agilis) in the Brazilian savanna (Cerrado), by directing testing for the relationship between nestedness and modularity with habitat strucutre and food resources availability. Our results showed that nestedness is related to habitat strucutre (spaced and thick trees), and modularity is related with diversity of arthropods and fruit abundance (which is higher during the warm-wet season). We propose that the relationship between nestedness and habitat structure is an outcome of individual variation in the vertical space and food resource use by G. agilis in sites with thick and spaced trees. Moreover, individual specialization in resource‐rich and population‐dense periods possibly increased the network modularity of G. agilis. Therefore, our study reveals that environment variability considering spatial and temporal components is important for shaping network structure of populations
Our study is now published in Ecology and Evolution, and can be accessed at: https://doi.org/10.1002/ece3.5024
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