Multivariate approach to evaluate the factors controlling the phytoplankton abundance and diversity along the coastal waters of Diu, northeastern Arabian Sea

Kumar, P. Sathish; Venkatnarayanan, S.; Pandey, Vikas; Ratnam, Krupa; Jha, Dilip Kumar; Rajaguru, S. N.; Dharani, G.; James, Rathinam Arthur; Atmanand, M. A.

doi:10.1016/j.oceano.2021.11.005

Cited by 13 publications

(5 citation statements)

References 22 publications

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“…Salinity ranged between 30.05 and 35.16 PSU with maximum mean salinity of 34.99 ± 0.32 PSU in PRM and a minimum of 30.15 ± 0.06 PSU in MON. The lowering of salinity values during the MON may be attributed to the influx of freshwater due to the high rainfall associated with this season (Kumar et al, 2022). A Kruskal-Wallis H test showed that there was a statistically significant difference in salinity between different seasons, c 2 = 17.853, p = 0.0001.…”

Section: Environmental Parametersmentioning

confidence: 92%

“…Similarly, dissolved oxygen, water temperature, and pH also followed the same trend, showing higher values during the PRM and lower values during the MON. The record of high DO (5.83 ± 0.05 mg/L) values during the PRM is associated with the photosynthetic activities of phytoplankton increasing the DO concentration of seawater (Kumar et al, 2022). In contrast, BOD was higher during the MON (1.12 ± 0.45 mg/L) and lower values were observed during the PRM (0.86 ± 0.06 mg/L).…”

Section: Environmental Parametersmentioning

confidence: 95%

“…Diu (20.71°N and 70.98°E), a union territory of India, is a small island with a geographical area of 40 Km 2 , situated in the northeastern Arabian Sea. The average annual rainfall is recorded 550 millimeters (https://diu.gov.in/about-diu.php), while the average annual ambient atmospheric temperature ranged between 15°C and 42°C (Jha et al, 2021;Kumar et al, 2022). The benthic sampling was carried out at seven predetermined stations (S-1,2,3,4,5,6, and 7) of Diu island in February, September, and November during the year 2018 covering pre-monsoon (PRM), monsoon (MON), and postmonsoon (POM) periods, respectively (Figure 1A).…”

Section: Methodsmentioning

confidence: 99%

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Seasonal variability and its impact on the sub-tidal macrobenthic fauna of Diu Island, north-eastern Arabian Sea: A multivariate approach

Pandey

Jha²,

Ratnam³

et al. 2022

Front. Mar. Sci.

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Section: Environmental Parametersmentioning

confidence: 92%

Section: Environmental Parametersmentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal variability and its impact on the sub-tidal macrobenthic fauna of Diu Island, north-eastern Arabian Sea: A multivariate approach

Pandey

Jha²,

Ratnam³

et al. 2022

Front. Mar. Sci.

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“…A significant increase in the content of suspended particulate matter (SM) reduces light penetration in water and worsens conditions for the development of phytoplankton (Su et al, 2015;Horemans et al, 2020;Kumar et al, 2022). In opposite, the decrease in amount of SM with a concomitant increase in the penetration of solar radiation may be one of the main causes for the development of phytoplankton blooms (Guinder et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Impact of the Construction of New Port Facilities on Primary Production of Plankton in the Neva Estuary (Baltic Sea)

Golubkov

Голубков²

2022

Front. Mar. Sci.

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A significant increase in the human population on marine coast and steady growth of maritime water transport causes the construction of port infrastructure and the creation of new lands, which affects the ecosystems of coastal waters. Despite the widespread occurrence of such large-scale engineering projects in coastal areas, their impact on various components of aquatic ecosystems, including phytoplankton, is still poorly understood. The aim of the study was to assess the effect of the construction of ports and the alluvium of new lands in the Neva Estuary in 2000s on the productivity of phytoplankton. Digging and dredging of bottom sediments results in one order of magnitude elevation of suspended particulate matter (SM), which mostly consisted of sand and clayed deposits and in significant decrease water transparency, as compared to the average long-term values. Concentrations of total phosphorus in the estuarine waters during the works significantly positively correlated with the concentrations of SM. However, the multiple increase in nutrients was less important for phytoplankton development than expected. Analysis of variance and stepwise multiple regression analyses showed that the main predictor of the primary production of plankton in the periods of construction was water transparency. Gross primary production decreased significantly. In contrast to short-term effects caused by wind-induced events, which often stimulated phytoplankton development, long-term construction works of new port facilities negatively influenced phytoplankton productivity. Apart from pristine conditions when the phosphorus concentration was the main factor limiting the primary production in the estuary, the main limiting factor during long-term engineering projects became water transparency. Taking into account plans for further development of ports in coastal areas around the world, the influence of the large-scale engineering projects on the conditions for the development of phytoplankton may provide a new aspect of long-term regulation of algal blooms and ecosystem functioning in the coastal and estuarine zones.

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“…toxicity, benthos, microorganisms, ocean acidification, micro-plastic, and sediment quality are important variables that need be monitored (Dheenan et al, 2014;Pandey et al, 2021;Kumar et al, 2022;Pandey et al, 2022). The research is further extended to look at modelling approaches, newly created statistical tools, or a combination of techniques or biotic index in the coastal and marine environment, concentrating on interactions between land and seawater.…”

mentioning

confidence: 99%

Editorial: Coastal and marine environmental quality assessments

Jha

Wu²,

Thiruchitrambalam³

et al. 2023

Front. Mar. Sci.

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Editorial on the Research TopicCoastal and marine environmental quality assessments Seawater quality has a considerable impact on the biological productivity and ecological viability of coastal and marine environments (Dheenan et al., 2016;Yuvaraj et al., 2018;. Anthropogenic pressure has continuously grown due to population expansion and industrialisation in coastal areas, which has led to a decline in seawater quality along the coast. The environment and ecology have been severely damaged owing to the release of large amounts of pollutants through anthropogenic and natural catastrophes into the coastal and marine ecosystems. As a result, coastal pollution has grown to be a global problem that has to be addressed by using monitoring programs and a mitigation management system.The physical, chemical, and biological components of coastal and marine ecosystems have a significant role in their productivity and sustainability. These ecosystems have been and continue to be significantly impacted by anthropogenic pollutants. More than 80% of all marine pollutants come from land-based sources, the bulk of which are commercial, agricultural, and urban in nature. Coastal and marine pollution is increased by human activities including offshore gas, oil extraction, and transportation.Preventing and controlling coastal and marine pollution as well as developing better monitoring techniques and systems are essential for a better understanding of the spatial and temporal variations in seawater quality (Jha et al., 2015). Analyzing real-time data and its effects on the marine ecosystem requires the use of data buoys, remote sensing, and other cutting-edge technological advancements in coastal and marine water quality monitoring.To analyse physicochemical and biological variables and other environmental issues including harmful algal blooms (HABs), heavy metal pollution, bioaccumulation, and eutrophication, it is necessary to create techniques for analysing long-term ecological data from the coastal and marine environments. The surveillance program provides huge datasets that are extremely useful for determining the health of the marine ecosystem. The approach for analysing environmental factors must be improved in light of current technological breakthroughs to meet the scientific demands for large dataset analysis and understanding. The physicochemical properties of water, phytoplankton, zooplankton, nutrients, metal Frontiers in Marine Science frontiersin.org 01

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Multivariate approach to evaluate the factors controlling the phytoplankton abundance and diversity along the coastal waters of Diu, northeastern Arabian Sea

Cited by 13 publications

References 22 publications

Seasonal variability and its impact on the sub-tidal macrobenthic fauna of Diu Island, north-eastern Arabian Sea: A multivariate approach

Seasonal variability and its impact on the sub-tidal macrobenthic fauna of Diu Island, north-eastern Arabian Sea: A multivariate approach

Impact of the Construction of New Port Facilities on Primary Production of Plankton in the Neva Estuary (Baltic Sea)

Editorial: Coastal and marine environmental quality assessments

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