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dc.contributor.authorHurmine, R.
dc.contributor.authorSukumaran, S.
dc.contributor.authorManikandan, B.
dc.contributor.authorThampan, A.K.
dc.date.accessioned2025-12-04
dc.date.accessioned2025-12-04T09:19:49Z
dc.date.available2025-10-27
dc.date.available2025-12-04T09:19:49Z
dc.date.issued2025
dc.identifier.citationOcean & Coastal Management, Vol.272;2025;article no:107981
dc.identifier.issn0964-5691
dc.identifier.otherhttps://www.sciencedirect.com/science/article/pii/S0964569125004442
dc.identifier.urihttps://doi.org/10.1016/j.ocecoaman.2025.107981
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9558
dc.descriptionIF2024=5.4
dc.description.abstractMarine Protected Areas (MPAs), despite their protected status, face growing threats from climate change and anthropogenic pressures, necessitating biodiversity assessment to evaluate their conservation effectiveness. This study employed macrobenthos to investigate beta (?) diversity, partitioned into Local Contributions to Beta Diversity (LCBD) and Species Contributions to Beta Diversity (SCBD), to identify ecologically critical sites and species within the moderately impacted Gulf of Kachchh (GoK) and the less impacted Gulf of Mannar (GoM) MPAs. This approach provided a more nuanced analysis than the classical Whittaker's ?-diversity index (?W). The GoM, characterized by stable environmental conditions, harboured more k-selected species than GoK, reflecting its high conservation value. Conversely, GoK showed higher LCBD and SCBD metrics than the GoM, reflecting ecological perturbations and the need for targeted restoration. ?-regression models revealed that LCBD was mainly driven by community metrics, particularly turnover with some influence from nestedness, in both MPAs. Environmental parameters such as suspended solids, sand, and total organic carbon in GoK, and sand and silt in GoM were strongly associated with LCBD. SCBD was primarily shaped by species occupancy and abundance, with occupancy emerging as the key driver in both MPAs. These findings highlight the value of expanding advanced ?-diversity metrics globally to strengthen marine conservation and ecosystem management.
dc.languageen
dc.publisherElsevier
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleAdvancing biodiversity assessment of marine protected areas by identifying ecologically critical sites and species
dc.affiliation.authorCSIR-National Institute of Oceanography, Mumbai, Maharastra, India


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