J Plant Ecol ›› 2023, Vol. 16 ›› Issue (3): rtac094.DOI: 10.1093/jpe/rtac094

• Research Articles •    

Relative stable interannual variation in plant-plant pollen transfer rather than the plant-pollinator network of a subalpine meadow

Qiang Fang1,*, Shiyun Guo1, Tao Zhang1,2, Xiaoxin Tang3   

  1. 1College of Agriculture, Henan University of Science and Technology, Luoyang 471003, China;
    2Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China;
    3State Key Laboratory of Southwest Karst Mountain Biodiversity Conservation of National Forestry and Grassland Administration, College of Life Science, Guizhou Normal University, Guiyang 550001, China
  • Received:2022-06-06 Revised:2022-07-16 Accepted:2022-10-17 Online:2022-10-23 Published:2023-06-01
  • Contact: E-mail: fang0424@163.com


Abstract: Previous studies have shown that plant-pollinator mutualistic interactions experience highly interannual variation. Given that pollinators often move across multiple plant species, the plant-plant interactions that take place via heterospecific pollen (HP) transfer may also vary temporally, which could have important implications for floral evolution and community assembly. Here, we evaluated the interannual variation in plant-pollinator networks and plant-plant heterospecific pollen transfer (HPT) networks of a subalpine meadow community in Southwest China for three consecutive years. The interactions largely varied among years for both network types. The composition of donor-species HP deposited on the plants varied less than did the visit composition of the pollinators, suggesting that HP could be transferred from identical donor species to recipient species through different shared pollinators among years. The plant species were at more similar positions in the HPT network than they were in the plant-pollinator network across years. Moreover, the more generalized plant species in the plant-pollinator network tended to export their pollen grains and more strongly influence HPT. We evaluated the relatively stable structure of the HPT network compared with the plant-pollinator network, which represents an important step in the integration of plant-pollinator and plant-plant interactions.

Key words: plant-pollinator interaction, plant-plant interaction, pollination network, heterospecific pollen, temporal dynamic


关键词: 植物-传粉者互作, 植物-植物互作, 传粉网络, 异种花粉, 时间动态