Expanded Home Range of Pollinator Birds Facilitates Greater Pollen Flow of Camellia japonica in a Forest Heavily Damaged by Volcanic Activity

  • Harue Abe
  • Saneyoshi Ueno
  • Yoshihiko Tsumura
  • Masami Hasegawa
Part of the Ecological Research Monographs book series (ECOLOGICAL)


Single-pollen genotyping enables us to track pollen flow that is mediated by animal vectors. By applying this innovative technique to a Camellia japonica and pollinator bird system on Miyake-jima, a volcanic island of the Izu Islands, Japan, we evaluated pollen flow mediated by the pollinator Zosterops japonica under different C. japonica flower densities. These flower densities were affected by a volcanic eruption in 2000 and subsequent large emissions of volcanic gases. The genetic diversity of pollen grains adhering to pollinators in areas with low flower density was greater than in an area with high flower density. This result was consistent with bird pollinator movement elucidated by radio tracking. In areas with low flower density, resulting from volcanic activity, pollinator birds ranged over larger areas to satisfy their energy demands rather than moving to areas with higher flower density. These results indicate that the C. japonica and pollinator bird system can ensure reproductive success even though external environmental factors, such as volcanic activity, have decreased flower density.


Home Range Size Flower Density Pollen Flow Radio Tracking Pollen Pool 
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Copyright information

© Springer 2011

Authors and Affiliations

  • Harue Abe
    • 1
  • Saneyoshi Ueno
    • 2
  • Yoshihiko Tsumura
    • 2
  • Masami Hasegawa
    • 3
  1. 1.Graduate School of Agricultural ScienceTohoku UniversityOsakiJapan
  2. 2.Tree Genetics Laboratory, Department of Forest GeneticsForestry and Forest Products Research InstituteTsukubaJapan
  3. 3.Laboratory of Geographical EcologyToho UniversityFunabashiJapan

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