Heavy metal accumulation in zooplankton and impact of water quality on its community structure

El-Metwally, Mohamed E. A.; El-Regal, Mohamed A. Abu; Abdelkader, Ahmed I.; Sanad, Eman F.

doi:10.1007/s12517-021-09424-x

Cited by 11 publications

(5 citation statements)

References 46 publications

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“…As adults, seahorses feed mainly on small crustaceans, including mysids shrimp, amphibians and other benthic crustaceans. The different seahorse populations were contaminated with Cu and Cr, which corresponds with previous studies on zooplankton (El-Metwally et al, 2022) and phytoplankton (Szymańska-Walkiewicz et al, 2022). Consistent with the experiments of Sun et al (2019) in which the seahorse ingested heavy metals and MPs adsorbed by mysid shrimp, resulting in the accumulation of heavy metals and MPs in the seahorse and inhibition of growth.…”

Section: Discussionsupporting

confidence: 86%

“…Seahorses primarily inhabit shallow coastal areas and are often found in seagrass beds, benthic algae, coral reefs, and mangroves (Barboza et al, 2020). Foster and Vincent (2004) reported that the unique life history of seahorses, such as male-pregnancy reproduction and limited moving range, increase their vulnerability to environmental change, including habitat destruction, overfishing, and marine pollution. In particular, the shallow coastal areas inhabited by seahorses are usually more susceptible to different marine contaminants (Pojana et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Bioaccumulation of contaminants in wild seahorses collected from coastal China

et al. 2022

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Eighty-four wild seahorses, including three of China’s dominant species, were collected from seven coastal provinces to evaluate their common contaminant contents. Heavy metals (including Cu, Pb, Cd, Cr, and Hg), Benzo(a)pyrene (B[a]P), and microplastics were detected in the collected seahorses. The results indicate that considerable contamination variations are present in seahorses from different regions and species. Elevated concentrations of Cu and Cr, compared to other heavy metals, were observed in most sampled locations. In addition, B[a]P concentrations were far greater in Hippocampus mohnikei and H.trimaculatus compared with H.kelloggi (P < 0.05). Substantial changes in microplastic concentrations were also observed in seahorses from different locations, and significant differences were observed between sampled species (P < 0.05). Further, a correlation analysis obtained strong correlations among four heavy metals (Cu, Pb, Cd, and Cr), except Hg. A significant correlation was identified between B[a]P and microplastics (P < 0.01), suggesting potential synergistic effects between these two contaminants. In brief, this study indicates that wild seahorse populations are experiencing environmental pollution.

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Section: Discussionsupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of contaminants in wild seahorses collected from coastal China

et al. 2022

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“…Zooplankton groups such as amphipoda and decapoda showed the peak of its abundance where dissolved oxygen level was high (Granata et al 2020, Purushothaman et al 2021. The CCA also revealed the abundance of the remaining groups in habitats with high conductivity, TDS, alkalinity, hardness and salinity concentration, implying were able to tolerate habitats with such environmental conditions (Furst et al 2019, El-Metwally et al 2022. The obtained CCA results are very much similar to the indication of correlation coefficient results (Table 5).…”

Section: Fig 3 Canonical Correspondence Analysis Triplot With Zooplan...supporting

confidence: 56%

Effect of Water Quality on Zooplankton in Mangrove Areas of Munroe Island, Kerala

2022

IJE

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The present study was directed to evaluate the influence of water quality variables on selected zooplankton groups in the Munroe Island. Ten sampling stations were selected and zooplankton samples were collected with WP net (200 µm). Fourteen water quality parameters were considered for the analysis to recognize their influences on zooplankton community. The pH ranged from 6.90 to 7.53.The level of solids, conductivity, salinity, total alkalinity and total hardness was high in Pattamthuruthu when compared to other stations. Palliyanthuruthu registered a minimum DO.The BOD and COD varied from 0.17 to 0.876, 9 to 19 respectively. The Pezhumthuruthu shows maximum abundance of zooplankton (72745No/m ) and minimum at Kidapram I (8002No/m ). Among the zooplankton communities, 3 3 copepoda showed maximum abundance (32740No/m ) and chaetognatha minimum (3No/m ).The water quality variables such as total 3 3 hardness, total alkalinity, salinity, temperature, electrical conductivity and total dissolved solids tend to increase towards the sampling stations adjacent to the Ashtamudi estuary. The variation in zooplankton abundance and hydrological features clearly corroborate the influence of Ashtamudi estuary and similarly the influence of Kallada River on Villimangalam , Kidapram II and Kidapram I was also reflected during the study period. The zooplankton abundance in Munroe Island was significantly influenced by the variations in water quality due to various natural as well as anthropogenic stresses.

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“…These trace metals have the potential to accumulate in marine organisms over time (bioaccumulation effects), and their increased concentrations in the food chain can lead to adverse effects on the health and well-being of organisms at higher trophic levels (biomagnification effects). Previous research has shown the bioaccumulation of Ni on zooplankton (Villagran et al, 2019;El-Metwally et al, 2022), oyster (Chouvelon et al, 2022), molluscs (Andra Oros, 2010), and fish (Blewett and Wood, 2015); Mn in zooplankton (El-Metwally et al, 2022), Antarctic bivalve (Husmann et al, 2012(Husmann et al, ), clams (O'mara et al, 2019, and juvenile turbot (Van Bussel et al, 2014). However, other studies revealed no biomagnification of Ni or Mn in the marine food webs (Sun et al, 2020;Chouvelon et al, 2019;Campbell et al, 2005;Mathews and Fisher, 2008).…”

Section: Particulate Trace Metal Accumulation In Seawater and Its Env...mentioning

confidence: 97%

Influence of Ocean Alkalinity Enhancement with Olivine or Steel Slag on a Coastal Plankton Community in Tasmania

Guo,

Strzepek,

Swadling

et al. 2023

Preprint

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Abstract. Ocean alkalinity enhancement (OAE) aims to increase atmospheric CO2 sequestration in the oceans through the acceleration of chemical rock weathering. This could be achieved by grinding rocks containing alkaline minerals and adding the rock powder to the surface ocean where it dissolves and chemically locks CO2 in seawater as bicarbonate. However, CO2 sequestration during dissolution coincides with the release of potentially bio-active chemicals and may induce side effects. Here, we used 53 L microcosms to test how coastal plankton communities from Tasmania respond to OAE with olivine (mainly Mg2SiO4) or steel slag (mainly CaO and Ca(OH)2) as alkalinity sources. Three microcosms were left unperturbed and served as a control, three were enriched with olivine powder (1.9 g L−1), and three with steel slag powder (0.038 g L−1). Phytoplankton and zooplankton community responses as well as some biogeochemical parameters were monitored for 21 days. Olivine and steel slag additions increased total alkalinity by 29 µmol kg−1 and 361 µmol kg−1 respectively, which corresponds to a theoretical increase of 0.9 % and 14.8 % of the seawater storage capacity for atmospheric CO2. Olivine and steel slag released silicate nutrients into the water column, but steel slag released considerably more and also significant amounts of phosphate. Both minerals released dissolved aluminium (> 400 nmol L−1). The slag addition increased dissolved manganese concentrations (784 nmol L−1), while olivine increased dissolved nickel concentrations (38 nmol L−1). The slag treatment increased the total particulate manganese concentrations (22 nmol L−1), while olivine increased the total particulate nickel (5 nmol L−1), which was consistent with the increase in the dissolved concentrations of these trace metals in seawater. There was no significant difference in total chlorophyll a concentrations between the treatments and the control, likely due to nitrogen limitation of the phytoplankton community. However, flow cytometry results indicated an increase in the cellular abundance of several smaller (~<20 µm) phytoplankton groups in the olivine treatment compared to the slag treatment and the control. The abundance of larger phytoplankton (~>20 µm) decreased much more in the control than in the mineral addition treatments after day 10. Furthermore, the maximum quantum yields of photosystem II (Fv/Fm) were higher in slag and olivine treatments, suggesting that mineral additions increased photosynthetic performance. The zooplankton community composition was also affected with the most notable changes being observed in the dinoflagellate Noctiluca scintillans and the appendicularian Oikopleura sp. Overall, steel slag is much more efficient for CO2 removal with OAE than olivine and appears to be induce less changes in the plankton community when relating the CO2 removal potential to the level of environmental impact that was observed here.

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Heavy metal accumulation in zooplankton and impact of water quality on its community structure

Cited by 11 publications

References 46 publications

Bioaccumulation of contaminants in wild seahorses collected from coastal China

Bioaccumulation of contaminants in wild seahorses collected from coastal China

Effect of Water Quality on Zooplankton in Mangrove Areas of Munroe Island, Kerala

Influence of Ocean Alkalinity Enhancement with Olivine or Steel Slag on a Coastal Plankton Community in Tasmania

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