Abstract
A great challenge in ecology is to link patterns in nature with the factors that determine species coexistence and community structure. In general, these patterns have been associated with different environmental conditions and species traits. The coexistence of ant species could be affected by the availability of food and nesting resources, which depend on vegetation diversity and structural complexity. In this study, we attempt to reproduce, through null models, the properties of ant community structure in areas with different physiognomy of vegetation associated to different wildfire regimes. The null model construction considered ant traits such as occurrence frequency, body size, and nest type; and site characteristics such as vegetation height and extra-floral nectar availability, and their combinations. The null models were compared to observed species segregation and nestedness patterns. Ant species were more aggregated in space than expected by chance. Vegetation height and extra-floral nectar availability were included in the most successful models in predicting ant segregation and aggregation pattern. Furthermore, ants’ body size was enough to reproduce the nestedness of species distribution in sites. Our results suggest that under post-fire conditions, habitat complexity, resource availability and species traits such as body size may be the determinants of ant community structure.
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Abbreviations
- AIC:
-
Akaike Information Criterion
- B:
-
Body size
- CI:
-
Confidence Interval
- EFN:
-
Extra-Floral Nectar
- Eq:
-
Equiprobable
- Fr:
-
Frequency
- GLMM:
-
Generalized Linear Mixed Model
- N:
-
Nest type
- O:
-
Observed frequency matrix
- V:
-
Vegetation height
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Tavella, J., Alvarez Pringles, A.P. & Cagnolo, L. Determinants of ant species spatial distribution in habitats from central Argentina. COMMUNITY ECOLOGY 19, 300–310 (2018). https://doi.org/10.1556/168.2018.19.3.11
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DOI: https://doi.org/10.1556/168.2018.19.3.11