Journalartikel

Jahr der Veröffentlichung: 2024

Zeitschrift: Proceedings of the Royal Society B: Biological Sciences

Bandnummer: 291

Heftnummer: 2023

ISSN: 0962-8452

eISSN: 1471-2954

Open Access Status: Hybrid

DOI Link: https://doi.org/10.1098/rspb.2023.2604

Verlag: The Royal Society

Abstract: 
Understanding the organization of mutualistic networks at multiple spatial scales is key to ensure biological conservation and functionality in human-modified ecosystems. Yet, how changing habitat and landscape features affect pollen-bee interaction networks is still poorly understood. Here, we analysed how bee-flower visitation and bee-pollen-transport interactions respond to habitat fragmentation at the local network and regional metanetwork scales, combining data from 29 fragments of calcareous grasslands, an endangered biodiversity hotspot in central Europe. We found that only 37% of the total unique pairwise species interactions occurred in both pollen-transport and flower visitation networks, whereas 28% and 35% were exclusive to pollen-transport and flower visitation networks, respectively. At local level, network specialization was higher in pollen-transport networks, and was negatively related to the diversity of land cover types in both network types. At metanetwork level, pollen transport data revealed that the proportion of single-fragment interactions increased with landscape diversity. Our results show that the specialization of calcareous grasslands' plant-pollinator networks decreases with landscape diversity, but network specialization is underestimated when only based on flower visitation information. Pollen transport data, more than flower visitation, and multi-scale analyses of metanetworks are fundamental for understanding plant-pollinator interactions in human-dominated landscapes.

Harvard-Zitierstil: Libran-Embid, F., Grass, I., Emer, C., Alarcon-Segura, V., Behling, H., Biagioni, S., et al. (2024) Flower-bee versus pollen-bee metanetworks in fragmented landscapes, Proceedings of the Royal Society B: Biological Sciences, 291(2023), Article 20232604. https://doi.org/10.1098/rspb.2023.2604

APA-Zitierstil: Libran-Embid, F., Grass, I., Emer, C., Alarcon-Segura, V., Behling, H., Biagioni, S., Ganuza, C., Herrera-Krings, C., Setyaningsih, C., & Tscharntke, T. (2024). Flower-bee versus pollen-bee metanetworks in fragmented landscapes. Proceedings of the Royal Society B: Biological Sciences. 291(2023), Article 20232604. https://doi.org/10.1098/rspb.2023.2604