Trace Metals in Phytoplankton: Requirements, Function, and Composition in Harmful Algal Blooms

Sustainability, Journal Year: 2024, Volume and Issue: 16(12), P. 4876 - 4876

Published: June 7, 2024

In a constantly changing environment brought about by the climate crisis and escalated anthropogenic perturbations driven growing population, harmful algal bloom dynamics their impacts are expected to shift, necessitating adaptive management strategies comprehensive research efforts. Similar primary productivity, HABs have been thought be primarily major nutrients such as N, P, Si. However, recent investigations on role importance of micronutrients limiting factors in aquatic environments highlighted. This paper provides review metal phytoplankton interactions, with specific emphasis pertinent information influence trace growth, toxin production, other underlying mechanisms related HABs. Low near-depleted levels essential nutrients, including Fe, Cu, Zn, Se, Mn, Co, Mo, negatively impact cell growth proliferation various marine freshwater HAB species. evidence shows that at elevated levels, these elements, along non-essential ones, could still cause toxic effects certain species manifested decreased photosynthetic activities, oxidative stress, ultrastructure damage, cyst formation. Interestingly, while metals mostly result increased Co (i.e., yessotoxins, gymnodimine, palytoxins) Mn isodomoic acid, okadaic diol esters) enrichments revealed otherwise. addition releasing dissolved organic matter (DOM), carbon (DOC) humic substances, was observed an adaptation strategy, since compounds proven chelate water column, thereby reducing metal-induced toxicity. Whilst current centers free toxicity elements Cu account how contribute metabolic processes under conditions reflective situ scenarios HAB-prone areas would yield new perspectives roles With demands global population for food security sustainability, substantial pressure is exerted agriculture aquaculture sector, highlighting need effective communication regarding interactions macro- improve existing policies practices.

Language: Английский

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Shelf-to-basin shuttle of highly fractionated chromium isotopes in the Arctic Ocean

Geochimica et Cosmochimica Acta, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

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Bioremediation approaches for chromium detoxification and transformation: Advanced strategies and future Perspectives

International Biodeterioration & Biodegradation, Journal Year: 2024, Volume and Issue: 196, P. 105951 - 105951

Published: Nov. 9, 2024

Language: Английский

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Fractionation of iron and chromium isotopes in hydrothermal plumes from the northern Mid-Atlantic Ridge

Earth and Planetary Science Letters, Journal Year: 2023, Volume and Issue: 624, P. 118468 - 118468

Published: Nov. 16, 2023

Hydrothermal venting impacts the global-scale biogeochemical cycles of many trace metals and their isotopes. Processes in hydrothermal plumes regulate dispersal vent-derived may vary response to differences geologic setting vent fields and/or geochemistry overlying ocean water. Here we present results analyses dissolved Fe Cr concentrations, isotope (δ56Fe) (δ53Cr) distributions, seawater samples collected from above TAG Rainbow sites on Mid-Atlantic Ridge during GEOTRACES GA13 cruise. We show that profiles isotopes through near-field are mirror image each other. Oxidation Fe(II) precipitation Fe-(oxyhydr)oxides account for low δ56Fe values Fe, as −1.83 ‰ at −6.94 Rainbow. Plume with associated elevated δ53Cr compared background (by up +0.14 +0.69 Rainbow, respectively), while particulate is characterised by relatively (−1.02 −1.22 ‰). This striking result suggests Cr(VI) reduced Cr(III) precipitates surface Fe(III) particles within plume. Reduction scavenging plume Fe-(oxyhydr)oxide mean high-temperature systems likely a net sink (and also TAG). As removal flux related rate oxidation plume, it (i) across global scale (ii) change over glacial-interglacial cycles.

Language: Английский

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Controls on the distribution of dissolved Cr in the upper water column of the Atlantic Basin

Geochimica et Cosmochimica Acta, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

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