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Spatial Heterogeneity Regulates Plant-Pollinator Networks across Multiple Landscape Scales

Author

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  • Eduardo Freitas Moreira
  • Danilo Boscolo
  • Blandina Felipe Viana

Abstract

Mutualistic plant-pollinator interactions play a key role in biodiversity conservation and ecosystem functioning. In a community, the combination of these interactions can generate emergent properties, e.g., robustness and resilience to disturbances such as fluctuations in populations and extinctions. Given that these systems are hierarchical and complex, environmental changes must have multiple levels of influence. In addition, changes in habitat quality and in the landscape structure are important threats to plants, pollinators and their interactions. However, despite the importance of these phenomena for the understanding of biological systems, as well as for conservation and management strategies, few studies have empirically evaluated these effects at the network level. Therefore, the objective of this study was to investigate the influence of local conditions and landscape structure at multiple scales on the characteristics of plant-pollinator networks. This study was conducted in agri-natural lands in Chapada Diamantina, Bahia, Brazil. Pollinators were collected in 27 sampling units distributed orthogonally along a gradient of proportion of agriculture and landscape diversity. The Akaike information criterion was used to select models that best fit the metrics for network characteristics, comparing four hypotheses represented by a set of a priori candidate models with specific combinations of the proportion of agriculture, the average shape of the landscape elements, the diversity of the landscape and the structure of local vegetation. The results indicate that a reduction of habitat quality and landscape heterogeneity can cause species loss and decrease of networks nestedness. These structural changes can reduce robustness and resilience of plant-pollinator networks what compromises the reproductive success of plants, the maintenance of biodiversity and the pollination service stability. We also discuss the possible explanations for these relationships and the implications for landscape planning in agricultural areas.

Suggested Citation

  • Eduardo Freitas Moreira & Danilo Boscolo & Blandina Felipe Viana, 2015. "Spatial Heterogeneity Regulates Plant-Pollinator Networks across Multiple Landscape Scales," PLOS ONE, Public Library of Science, vol. 10(4), pages 1-19, April.
    • Handle: RePEc:plo:pone00:0123628
    DOI: 10.1371/journal.pone.0123628
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    References listed on IDEAS

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    1. Ugo Bastolla & Miguel A. Fortuna & Alberto Pascual-García & Antonio Ferrera & Bartolo Luque & Jordi Bascompte, 2009. "The architecture of mutualistic networks minimizes competition and increases biodiversity," Nature, Nature, vol. 458(7241), pages 1018-1020, April.
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    1. Gabriella L. Pardee & Kimberly M. Ballare & John L. Neff & Lauren Q. Do & DianaJoyce Ojeda & Elisa J. Bienenstock & Berry J. Brosi & Tony H. Grubesic & Jennifer A. Miller & Daoqin Tong & Shalene Jha, 2023. "Local and Landscape Factors Influence Plant-Pollinator Networks and Bee Foraging Behavior across an Urban Corridor," Land, MDPI, vol. 12(2), pages 1-13, January.
    2. Supratim Laha & Soumik Chatterjee & Amlan Das & Barbara Smith & Parthiba Basu, 2022. "Selection of Non-Crop Plant Mixes Informed by Arthropod-Plant Network Analyses for Multiple Ecosystem Services Delivery Towards Ecological Intensification of Agriculture," Sustainability, MDPI, vol. 14(3), pages 1-13, February.

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