A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seasonal trajectories of plant-pollinator interaction networks differ following phenological mismatches along an urbanization gradient
Highlights Plant-pollinator network structure changed along an urbanization gradient. Generalist species had central roles along the gradient throughout the season. Temporal trajectories of species and interaction diversity differed along the gradient. Network changes reflected mismatches in plant-pollinator phenology. We highlight practices to preserve diversity and functionality of plant-pollinator communities.
Abstract Urbanization may significantly alter the abundance, composition and phenology of natural communities of plants and pollinators. However, how such alterations eventually affect the structure of plant-pollinator interaction networks is still poorly known. Here, we investigate how the structure of plant-pollinator networks changes along an urbanization gradient, which coincides with a phenological mismatch between plants and pollinators. We examined changes in plant-pollinator network structure in 12 sites sown with standardized native flower mixes along an urbanization gradient in a metropolis in Northern France. We used network-level metrics in combination with more detailed methodologies to identify changes in network structure, species clustering, and species roles through urban classes and time. We also evaluated the temporal trajectories of α- and β-diversity of species and interactions along the gradient. Network-level metrics showed limited spatial–temporal variability in the connectance, distribution of interactions and network-level specialization. Finer-scale analyses showed that generalist plant and pollinator species with long phenology were the most central and played key roles in defining the composition of cohesive groups of interacting species in all networks. Network motifs and species positions showed higher temporal variability in less urbanized areas, and interactions were more dissimilar between urbanization classes earlier in the season. We showed evidence of alterations in plant-pollinator network structure across space and time along an urbanization gradient, likely driven by the significant advancement in flowering phenology observed in the more urbanized areas. Our results emphasize the importance of targeted measures to maintain functional plant-pollinator communities, especially early in the season in highly urbanized areas.
Seasonal trajectories of plant-pollinator interaction networks differ following phenological mismatches along an urbanization gradient
Highlights Plant-pollinator network structure changed along an urbanization gradient. Generalist species had central roles along the gradient throughout the season. Temporal trajectories of species and interaction diversity differed along the gradient. Network changes reflected mismatches in plant-pollinator phenology. We highlight practices to preserve diversity and functionality of plant-pollinator communities.
Abstract Urbanization may significantly alter the abundance, composition and phenology of natural communities of plants and pollinators. However, how such alterations eventually affect the structure of plant-pollinator interaction networks is still poorly known. Here, we investigate how the structure of plant-pollinator networks changes along an urbanization gradient, which coincides with a phenological mismatch between plants and pollinators. We examined changes in plant-pollinator network structure in 12 sites sown with standardized native flower mixes along an urbanization gradient in a metropolis in Northern France. We used network-level metrics in combination with more detailed methodologies to identify changes in network structure, species clustering, and species roles through urban classes and time. We also evaluated the temporal trajectories of α- and β-diversity of species and interactions along the gradient. Network-level metrics showed limited spatial–temporal variability in the connectance, distribution of interactions and network-level specialization. Finer-scale analyses showed that generalist plant and pollinator species with long phenology were the most central and played key roles in defining the composition of cohesive groups of interacting species in all networks. Network motifs and species positions showed higher temporal variability in less urbanized areas, and interactions were more dissimilar between urbanization classes earlier in the season. We showed evidence of alterations in plant-pollinator network structure across space and time along an urbanization gradient, likely driven by the significant advancement in flowering phenology observed in the more urbanized areas. Our results emphasize the importance of targeted measures to maintain functional plant-pollinator communities, especially early in the season in highly urbanized areas.
Seasonal trajectories of plant-pollinator interaction networks differ following phenological mismatches along an urbanization gradient
Fisogni, Alessandro (author) / Hautekèete, Nina (author) / Piquot, Yves (author) / Brun, Marion (author) / Vanappelghem, Cédric (author) / Ohlmann, Marc (author) / Franchomme, Magalie (author) / Hinnewinkel, Christelle (author) / Massol, François (author)
2022-07-08
Article (Journal)
Electronic Resource
English