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<p>Present study (2015–2017) provides the first species checklist report of macrobenthic polychaetes from the Dhamra estuarine region after the full operation of Dhamra Port. Benthos samples were collected from 12 locations revealed 26 species of marine benthic polychaetes, representing 20 genera, 12 families, and 7 orders. The order Phyllodocida was dominant, contributing 61% comprising of five polychaetes families. The predominance of indicator species such as <i>Capitella capitata</i>, <i>Cossura coasta</i>, and <i>Sigambra constricta</i> reflected organic enrichment in the study area, likely driven by riverine influx, untreated sewage, agricultural runoff, aquaculture discharge, and port-related activities. Comparative analysis for polychaetes species composition with adjacent ecosystems eg. Chandipur, Bhitarkanika, Mahanadi estuary reveals significant species overlap indicating strong ecological connectivity. Indeed present study enhances the polychaetes database for tropical Indian estuaries. It fills a critical knowledge gap by establishing baseline information on Dhamra estuary’s polychaetes diversity which seems useful for conservation &amp; management.</p>

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First Checklist of Macrobenthic Polychaetes from the Mangrove-Fringed Dhamra Estuary, East Coast of India

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Satyabrata Das Sharma,
  • Debasish Mahapatro,
  • Sangeeta Mishra,
  • Mitali Priyadarsini Pati,
  • L. Nayak,
  • C. R. Panda

摘要

Present study (2015–2017) provides the first species checklist report of macrobenthic polychaetes from the Dhamra estuarine region after the full operation of Dhamra Port. Benthos samples were collected from 12 locations revealed 26 species of marine benthic polychaetes, representing 20 genera, 12 families, and 7 orders. The order Phyllodocida was dominant, contributing 61% comprising of five polychaetes families. The predominance of indicator species such as Capitella capitata, Cossura coasta, and Sigambra constricta reflected organic enrichment in the study area, likely driven by riverine influx, untreated sewage, agricultural runoff, aquaculture discharge, and port-related activities. Comparative analysis for polychaetes species composition with adjacent ecosystems eg. Chandipur, Bhitarkanika, Mahanadi estuary reveals significant species overlap indicating strong ecological connectivity. Indeed present study enhances the polychaetes database for tropical Indian estuaries. It fills a critical knowledge gap by establishing baseline information on Dhamra estuary’s polychaetes diversity which seems useful for conservation & management.