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<p>Plant phenology encompasses the study of periodic events in the biological life cycles of plants and the influence of seasonal changes in weather and other environmental factors. In order to understand the role of the environment and changing climate on the life cycle of plants, long-term records are required to establish baselines against which significant future deviations can be discerned. This study aimed to analyze the spatial flowering pattern of the plant species <i>Bombax ceiba, Butea monosperma,</i> and <i>Cassia fistula</i> across India using publicly available images from citizen science portals and social media platforms. Citizen science is rapidly emerging as a reliable source of supplementary scientific information that can be effectively used to examine large-scale patterns of tree phenology. We found that for all three species, the flowering period is longer and begins earlier in the southern latitudes as compared with the northern latitudes. We conclude that publicly available images of flowering trees and citizen science data can serve as valuable resources to supplement existing information on tree phenology across India.</p>

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Latitudinal patterns of flowering phenology of three widespread tropical species from public media and data repositories

  • 期刊论文

  • 发表日期：

    2025年10月30日

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  • Bhavya Kriti,
  • Sidharth Mahesh,
  • Geetha Ramaswami

摘要

Plant phenology encompasses the study of periodic events in the biological life cycles of plants and the influence of seasonal changes in weather and other environmental factors. In order to understand the role of the environment and changing climate on the life cycle of plants, long-term records are required to establish baselines against which significant future deviations can be discerned. This study aimed to analyze the spatial flowering pattern of the plant species Bombax ceiba, Butea monosperma, and Cassia fistula across India using publicly available images from citizen science portals and social media platforms. Citizen science is rapidly emerging as a reliable source of supplementary scientific information that can be effectively used to examine large-scale patterns of tree phenology. We found that for all three species, the flowering period is longer and begins earlier in the southern latitudes as compared with the northern latitudes. We conclude that publicly available images of flowering trees and citizen science data can serve as valuable resources to supplement existing information on tree phenology across India.