Spatio-temporal variability in macrobenthic communities and trophic structure of a tropical estuary and its adjacent coastal waters

Rehitha, T.V.; Madhu, N.V.; Vineetha, G.; Vipindas, Puthiya Veettil; Resmi, P.; Revichandran, C.

doi:10.1007/s10661-019-7460-x

Cited by 14 publications

(8 citation statements)

References 51 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%

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%

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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“…P. cristata is considered an opportunistic species (Ji et al, 2022). In coastal waters along the Arabian Sea, Cossura coasta, the dominant species during the pre-monsoon period, was replaced by the surface deposit feeder P. pinnata during the monsoon and postmonsoon periods (Rehitha et al, 2019). Paraprionospio pinnata is only located in low-oxygen habitats in the Humboldt upwelling ecosystem (Fajardo et al, 2018) and it is the dominant species of the macrobenthic community in winter in the cage culture area of Daya Bay (Huang et al, 2005).…”

Section: Effect Of Environmental Factors On Three Species Of Polychaetesmentioning

confidence: 99%

Spatial and seasonal distributions of ten species of benthic macrofauna and twelve water environmental factors in a subtidal zone near the Daya Bay nuclear power plant

Cai

Rao²,

Zhao³

et al. 2023

Front. Mar. Sci.

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In this study, we analyzed the spatial and seasonal distributions of ten species of benthic macrofauna and 12 water environmental parameters at thirty-six sampling stations in the subtidal zone near the Daya Bay Nuclear Power Plant. The results showed that there were four types of distribution characteristics for 10 species of macrobenthic animals and 12 water environmental factors near the Daya Bay nuclear power plant: (1) three species of benthic macrofauna, namely Apionsoma (Apionsoma) trichocephalus, Amphioplus (Lymanella) laevis, and P. bidentata, and six water environmental parameters, including water depth, salinity, dissolved oxygen, suspended solids, chromium, and lead increased from inside the bay to outside the bay. (2) Three species of benthic macrofauna, P. cristata, T. lata, and T. scabra, and four water environmental parameters, including oils, arsenic, total phosphorus, and silicate, decreased from inside to outside the bay. (3) Two species of benthic macrofauna, A. dibranchis, and P. undulatus and one water environmental parameter, pH, were higher in the central bay than inside and outside the bay. (4) One species of benthic macrofauna, Sigambra hanaokai, and one water environmental parameter, total nitrogen, were lower in the central bay than inside and outside the bay. Correlation and BIO-ENV analyses confirmed that water depth was the main environmental factor affecting the ten species of benthic macrofauna. Understanding the distributions of the dominant benthic macrofauna could help protect nuclear cold source systems from benthic macrofaunal blockage and explore marine ecosystem connectivity.

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“…Species identification of the macrobenthic taxa having a high numerical density in the benthic samples, such as Polychaeta and Amphipoda was carried out using standard identification manuals and keys (Day, 1967;Fauchald, 1977;WoRMS, 2020). For understanding the trophic ecology and feeding preferences of the macrobenthic community, relevant literature was used and was categorised accordingly as Carnivorous (CVR), Suspension feeders (SF), Surface Deposit Feeders (SDF), and Subsurface Deposit Feeders (SSDF) (Fauchald and Jumars, 1979;Jumars et al, 2015;Jayachandran et al, 2019;Rehitha et al, 2019). values (av.…”

Section: Macrobenthic Communitymentioning

confidence: 99%

Seasonal variability in the water quality, sediment characteristics and macrobenthic community structure in the vicinity of finfish cage culture sites in a tropical estuary along the south-west coast of India

Vineetha,

Kripa,

Vineetha

et al. 2023

J. Mar. Biol. Ass. India

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Cage culture in estuaries and backwater systems is augmented as an additional source of income among the coastal population. However, the growing popularity of cage culture has resulted in its expansion to a greater level. Hence the present study was carried out to identify the impacts associated with cage culture on the water quality, sediment characteristics, macrobenthic abundance, and the community structure of the fishing island Pizhala on the southwest coast of India on a seasonal scale. The sample was taken from six stations near the cage (<1m) and two reference stations (200-300 m away). The study revealed significant variation in the water quality between the seasons. The DO concentration during pre-monsoon (PRM) had considerable variation between the cage sites and reference sites (RF). The sediment organic carbon in cage sites was consistently higher than the RF irrespective of the season. The RF sites had higher species diversity than the cage sites contributed mainly by sensitive organisms like amphipods. The feeding guild analysis revealed a higher abundance of sub-surface deposit feeders (SSDF) and surface deposit feeders in the cage sites corresponding to an increase in the sediment organic carbon concentration.

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Spatio-temporal variability in macrobenthic communities and trophic structure of a tropical estuary and its adjacent coastal waters

Cited by 14 publications

References 51 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 seasonal distributions of ten species of benthic macrofauna and twelve water environmental factors in a subtidal zone near the Daya Bay nuclear power plant

Seasonal variability in the water quality, sediment characteristics and macrobenthic community structure in the vicinity of finfish cage culture sites in a tropical estuary along the south-west coast of India

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