Abstract
Ecological assessments are currently being conducted by traditional morpho-taxonomical identification techniques that are time-consuming and often inaccurate. Biomonitoring programs are increasingly being complemented by the more rapid and efficient DNA barcoding approach. We compared the congruency of morpho-taxonomic (AMBI - AZTI's Marine Biotic Index) and genomic (gAMBI) benthic indices in ecological quality status (EcoQS) assignation in Mumbai harbour and Malvan Marine Protected area (MPA). The study, first of its kind to adopt the gAMBI tool in the selected milieu, contributed substantial number of macrobenthic cytochrome c oxidase subunit I gene (COI) sequences that were previously unavailable in the reference library, adding sufficient genetic resources for establishing ecostatus. AMBI and gAMBI values based on presence/absence data related significantly with those derived from abundance data matrices. Taxonomic and genomic indices derived ecostatus corresponded sufficiently well despite minor discrepancies, underscoring the viability of gAMBI as a superior alternative to AMBI in monitoring studies.
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