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Biodiversity and Ecology of Bryozoans from the Bay of Bengal, East coast of India

  • Original Article
  • Published:
Journal of the Geological Society of India

Abstract

The ecological record of bryozoans from the continental shelf-slope region of the southwestern Bay of Bengal is very sparse, prompting this investigation. Forty-five sea-floor sediment samples were collected along eight transects during the cruise on R/V Sagar Paschimi from the offshore region between Chennai and Cuddalore in the southwestern Bay of Bengal. The distribution of bryozoans was assessed based on the fragments of bryozoan colonies from these samples, which were collected at depths ranging from 6–308m. The goal was to determine the relationship between environmental parameters measured from the study area and the abundances of various bryozoan species. Results revealed the presence of 29 species of recent bryozoans in 24 genera pertaining to eight morphotypes. It is evident from the present investigation that the major control on the spatial distribution of bryozoan colonies is the type of substrate available, as sample sites dominated by coarse sediments showed high species richness though other factors such as ocean dynamics and rate of sedimentation also seem to regulate their abundance.

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Acknowledgements

The authors thank University Grants Commission, New Delhi for the financial support during research work and National Institute of Ocean Technology, Chennai (Ministry of Earth Sciences, Government of India) for sample collection. Special thanks are extended to Mr. D. Rajashekar (Vessel management cell Head), crew members and scientists who accompanied on board. Many thanks are due to the SEM facility available at Pondicherry University and the anonymous reviewer who helped to improve the manuscript.

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  1. Department of Earth Sciences, Pondicherry University, Puducherry, 605 014, India

    Tabita Symphonia & Senthil Nathan

  2. Department of Earth Sciences, Eritrea Institute of Technology, Asmara, 12676, Eritrea

    Tabita Symphonia

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  1. Tabita Symphonia
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  2. Senthil Nathan
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Correspondence to Tabita Symphonia.

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Symphonia, T., Nathan, S. Biodiversity and Ecology of Bryozoans from the Bay of Bengal, East coast of India. J Geol Soc India 98, 831–842 (2022). https://doi.org/10.1007/s12594-022-2074-2

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