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Environmental Determinants of the Distribution of Halophila beccarii Ascherson in Hainan Island, China

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  • Xiaoxiao Geng

    (Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Ministry of Education, Sanya 572022, China
    Hainan Academy of Ocean and Fisheries Sciences, Haikou 570125, China)

  • Zefu Cai

    (Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Ministry of Education, Sanya 572022, China
    Hainan Academy of Ocean and Fisheries Sciences, Haikou 570125, China)

  • Shuwen Jia

    (Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Ministry of Education, Sanya 572022, China
    Hainan Academy of Ocean and Fisheries Sciences, Haikou 570125, China)

  • Jie Shen

    (Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Ministry of Education, Sanya 572022, China
    Hainan Academy of Ocean and Fisheries Sciences, Haikou 570125, China)

  • Di Tang

    (Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Ministry of Education, Sanya 572022, China
    Hainan Academy of Ocean and Fisheries Sciences, Haikou 570125, China)

  • Daoru Wang

    (Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Ministry of Education, Sanya 572022, China
    Hainan Academy of Ocean and Fisheries Sciences, Haikou 570125, China)

  • Shiquan Chen

    (Key Laboratory of Utilization and Conservation for Tropical Marine Bioresources, Hainan Tropical Ocean University, Ministry of Education, Sanya 572022, China
    Hainan Academy of Ocean and Fisheries Sciences, Haikou 570125, China)

Abstract

This study presents the first record of the overall distribution of the seagrass Halophila beccarii Ascherson on the island of Hainan. Statistical and ecological methods were used to analyze the distribution of the species and the influence of environmental factors. Halophila beccarii was mainly distributed in the northwest and southeast of Hainan, in lagoons with a total area of 20.981 km 2 , including the largest H. beccarii area in China covering approximately 9.58 km 2 in Xiaohai, Wanning; there were also 4.89 km 2 in Xinying Bay, Danzhou, approximately 2.20 km 2 in Huachang Bay, Chengmai, 1.88 km 2 in Dongzhai Port, Haikou, 0.95 km 2 in Xinying Port, Lingao, approximately 0.668 km 2 in Laoyehai, Wanning, approximately 0.363 km 2 in Hongpai, approximately 0.23 km 2 in Maniao, and approximately 0.22 km 2 in Huanglong Port, Lingao. The average coverage of H. beccarii measured at 7.08–56.33%, the density of stem and branch was 487.47–20,167.1 ind/m 2 , and the biomass measured at 1.57–112.94 gDW/m 2 . The growth distribution was mainly influenced by habitat type and, to a lesser extent, by tidal branching channels, heavy metal content (Cu, Pb, Cr, Zn) in the marine environment, and human activities in adjacent coastal areas.

Suggested Citation

  • Xiaoxiao Geng & Zefu Cai & Shuwen Jia & Jie Shen & Di Tang & Daoru Wang & Shiquan Chen, 2022. "Environmental Determinants of the Distribution of Halophila beccarii Ascherson in Hainan Island, China," Sustainability, MDPI, vol. 14(20), pages 1-15, October.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:20:p:13491-:d:946936
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