Seasonality of macrobenthic assemblages and the biotic environmental quality of the largest monsoonal estuary along the west coast of India

Subramanian, Pandiya Rajan Rethinam; Jyothibabu, R.; Nagarathinam, Arunpandi; Jagadeesan, L.; SINGARAM, P; Chandrababu, Vishnu

doi:10.1007/s11356-021-13144-w

Cited by 9 publications

(4 citation statements)

References 56 publications

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“…Seasonally varied diversity indices are perceptible, with maximum abundance in the winter (Kundu et al, 2010). The findings of this study were consistent with other regional (Mulik et al, 2017;Dias et al, 2018;Rehitha et al, 2019;Sivadas et al, 2021;Subramanian et al, 2021;Kumar et al, 2022;Rehitha et al, 2022) and global (Abrogueña et al, 2021;Bravo et al, 2021;Dauvin et al, 2021;Salimi et al, 2021;Sańchez-Ovando et al, 2021;Kanhai, 2022) benthic evaluations.…”

Section: Macrobenthos Of Mahanadi Estuarysupporting

confidence: 92%

“…Furthermore, the distribution patterns of macrobenthos are susceptible to a wide range of anthropogenic interferences and show spatial and temporal shifts accordingly (Dash et al, 2021). Therefore, studies on the macrobenthic communities are increasingly adopted for assessing the health of the aquatic ecosystems (Mulik et al, 2017;Borja et al, 2019;Mulik et al, 2020a;Mulik et al, 2020b;Pandey et al, 2021;Dauvin et al, 2021;Subramanian et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Macrobenthic community of an anthropogenically influenced mangrove associated estuary on the East coast of India: An approach for ecological assessment

et al. 2022

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The Mahanadi Estuarine System (MES), with a complex network of freshwater channels, rivers, and mangroves, is a leading seaport in State Odisha on the east coast of India, but subjected to intense human activity in recent years. Such anthropic impingements are known to impact sediment-dwelling biota adversely. However, information on the macrobenthic community of the MES is not well documented yet. Therefore, the primary objectives of this study (February 2013-March 2017) were to address knowledge gaps on the macrobenthic community structure vis-à-vis local environmental conditions and to evaluate the extent of anthropogenic disturbances on macrobenthos. The results from 264 benthic grab samples (van Veen, 0.04 m2; 2 replicates × 12 GPS fixed locations × 3 seasons) revealed 73 taxa representing 64 genera and 48 families of macrobenthic fauna. The polychaetes (81.41%) and crustaceans (15.42%) were significant faunal groups that contributed mainly to the benthic population and diversity. Multivariate approaches using benthic community attributes and biotic indices (AMBI and M-AMBI) as proxy measures of environmental disturbances proved effective for appraisal. The correlations between the environmental parameters (temperature, pH, salinity) and community estimates were statistically significant. Hierarchical clustering analysis disclosed three major groups (Global R 0.70; p < 0.002) influenced by tolerant/opportunist species. The lower abundance, richness, diversity, and dominance of opportunistic species mark the signs of environmental stress. The community health status remained unbalanced, as indicated by AMBI scoring. M-AMBI analysis contributed best in differentiating areas exposed to diverse impacts and indicated polluted community health status with moderate ecological quality. Our results reiterate the effective use of macrobenthos as bioindicators for ecological status and monitoring. The findings could be utilized for future monitoring assessments, translated into valuable information, and designed into well-defined sustainable management strategies for the MES.

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Section: Macrobenthos Of Mahanadi Estuarysupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Macrobenthic community of an anthropogenically influenced mangrove associated estuary on the East coast of India: An approach for ecological assessment

et al. 2022

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“…A close relationship between salinity and abundance of macrobenthos exists (Rethinam Subramanian et al, 2021). Hangzhou Bay sediments primarily comprised silts with an admixture of sand and clay of 20-40 um size.…”

Section: Sample Collection and Processingmentioning

confidence: 96%

Spatial and temporal distribution of macrobenthos communities and their relationship with secondary front in Hangzhou Bay

Jia

Tang²,

Liu³

et al. 2022

Front. Mar. Sci.

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Water quality in Hangzhou Bay is inferior (grade 5) because of discharged from Yangtze River and Qiantang River, and from factories around the bay. This study analyzed relationships between the environment and macrobenthic communities at 44 stations throughout Hangzhou Bay, based on samples collected in 2006, from 2016–2018, and in 2021. Long-term spatial and temporal changed in macrobenthos, and the influence of secondary water fronts on community composition, were discussed. Macrobenthos in Qiantang River Estuary was numerically, primarily dominated by crustaceans, and elsewhere by polychaetes. Species that differ most in abundance between four identified regions in the bay were the amphipod Corophium sinensis, clam Potamocorbula laevis, and polychaete Amaeana occidentalis. The abundance and biomass of macrobenthos in different regions differs significantly. Taxa were allocated to six feeding guilds: filter feeders and omnivores predominate in Qiantang River Estuary and south of Hangzhou Bay, while surface and subsurface deposit feeders predominate in sediments north of Hangzhou Bay and in the bay mouth area. Negative correlations were apparent between the abundances of polychaetes Nephtys polybranchia, Magelona japonica, Heterospio sinica, Sabella sp. and A. occidentalis and salinity and pH, while positive correlations were apparent between those of Sternaspis chinensis and Capitellidae indet. Fine-grained fraction (silt and clay) and mid-salinity were more suitable for macrobenthos. The numbers and biomasses of macrobenthic species in the Hangzhou Bay frontal area increased significantly relative to values in adjacent areas. The difference of each area near the front was more than 94%, and the main difference species were polychaetes and mollusks. Our baseline data for this region might ultimately contribute towards improved conservation of regional macrobenthos, and a better understanding of ecosystem health in this highly polluted bay.

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“…The lowdensity values of capitelids recorded at stations #1 and #2, also located on the river, can be attributed to low salinity. These stations were sampled upstream, and the Capitellidae family is composed of euryhaline species (Subramanian et al, 2021) generally distributed from the intertidal zone to the deep sea (González et al, 2021). The Camboriú River, as well as others located close to urban centers (Strokal et al, 2021), have the highest water quality close to the source, and it decreases dramatically towards the mouth as a reflection of low concentrations of dissolved oxygen and high concentrations of nutrients, mainly phosphate and ammonia (SDS, 2017).…”

Section: Abioticsmentioning

confidence: 99%

Composition and seasonal variation of capitellidae from Balneário Camboriú, Santa Catarina, Brazil

Beltrão,

Cunha,

Diehl

2023

RHE

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The objective of this study was to provide information about the structure and composition of the Capitellidae family in Balneário Camboriú, as well as evaluate its space-time variations. Four sampling campaigns were carried out at 16 stations, distributed in the Camboriú River and Balneário Camboriú Bay. A total of 1,769 ind.m² were collected and identified into five taxa: Capitella sp.; Capitella cf. nonatoi; Heteromastus sp., Heteromastus similis and Mediomastus cf. californiensis. The most abundant taxon was M. californiensis, showing the highest number of individuals during autumn, followed by Capitella cf. nonatoi in the summer. The distribution of M. californiensis was more related to the opportunistic habit of the species than to seasonality, while Capitella cf. nonatoi distribution was related to the high concentration of organic matter from the Camboriú River, which may be the result of residents and tourists visiting the city in the summer. These results denote the Capitellidae family bioindicator potential for anthropogenic disturbances.

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Seasonality of macrobenthic assemblages and the biotic environmental quality of the largest monsoonal estuary along the west coast of India

Cited by 9 publications

References 56 publications

Macrobenthic community of an anthropogenically influenced mangrove associated estuary on the East coast of India: An approach for ecological assessment

Macrobenthic community of an anthropogenically influenced mangrove associated estuary on the East coast of India: An approach for ecological assessment

Spatial and temporal distribution of macrobenthos communities and their relationship with secondary front in Hangzhou Bay

Composition and seasonal variation of capitellidae from Balneário Camboriú, Santa Catarina, Brazil

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