Abstract
Community ecologists have made great advances in understanding how natural communities can be both diverse and stable by studying communities as interaction networks. However, focus has been on interaction networks aggregated over time, neglecting the consequences of the seasonal organization of interactions (hereafter 'seasonal structure') for community stability. Here, we extended previous theoretical findings on the topic in two ways: (i) by integrating empirical seasonal structure of 11 plant-hummingbird communities into dynamic models, and (ii) by tackling multiple facets of network stability together. We show that, in a competition context, seasonal structure enhances community stability by allowing diverse and resilient communities while preserving their robustness to species extinctions. The positive effects of empirical seasonal structure on network stability vanished when using randomized seasonal structures, suggesting that eco-evolutionary dynamics produce stabilizing seasonal structures. We also show that the effects of seasonal structure on community stability are mainly mediated by changes in network structure and productivity, suggesting that the seasonal structure of a community is an important and yet neglected aspect in the diversity-stability and diversity-productivity debates.
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Claims 6
Claim · model-written summary
Seasonal structure enhances community stability in a competition context.
Verbatim
e0“integrating empirical seasonal structure of 11 plant-hummingbird communities into dynamic models”
e1“in a competition context, seasonal structure enhances community stability by allowing diverse and resilient communities while preserving their robustness to species extinctions”
Claim · model-written summary
Seasonal structure preserves the robustness of communities to species extinctions.
Verbatim
e0“integrating empirical seasonal structure of 11 plant-hummingbird communities into dynamic models”
e1“in a competition context, seasonal structure enhances community stability by allowing diverse and resilient communities while preserving their robustness to species extinctions”
Claim · model-written summary
Seasonal structure allows diverse and resilient plant-hummingbird communities.
Verbatim
e0“integrating empirical seasonal structure of 11 plant-hummingbird communities into dynamic models”
e1“in a competition context, seasonal structure enhances community stability by allowing diverse and resilient communities while preserving their robustness to species extinctions”
Claim · model-written summary
Randomized seasonal structures remove the positive effect of empirical seasonal structure on network stability.
Verbatim
e0“integrating empirical seasonal structure of 11 plant-hummingbird communities into dynamic models”
e2“The positive effects of empirical seasonal structure on network stability vanished when using randomized seasonal structures”
Claim · model-written summary
Eco-evolutionary dynamics may produce stabilizing seasonal structures.
Verbatim
e0“integrating empirical seasonal structure of 11 plant-hummingbird communities into dynamic models”
e3“suggesting that eco-evolutionary dynamics produce stabilizing seasonal structures”
Claim · model-written summary
Effects of seasonal structure on community stability are mainly mediated by changes in network structure and productivity.
Verbatim
e0“integrating empirical seasonal structure of 11 plant-hummingbird communities into dynamic models”
e4“the effects of seasonal structure on community stability are mainly mediated by changes in network structure and productivity”