Negligible microbial heterotrophic quantitative contribution onto trace metals remobilization during marine sediment resuspension - insights from a Mediterranean urbanized bay

Abstract

Marine sediments are a sink for trace metals but also a potential source during sediment resuspension events. Understanding the factor that regulates this uptake or release of contaminant is of prime importance. While the impact of abiotic processes has been widely studied, the quantitative influence of microbial activities on metal cycling during sediment resuspension events is still largely unknown. This study was designed to quantify such microbial contributions on the cycling of a suite of metals (Al,

Desert dust deposition supplies essential bioelements to Red Sea corals

“…It was then filtered on 0.22 µm minisart filter and kept in tightly closed 50 ml tubes. The concentration of trace elements in these seawater samples (and in control water samples, without dust addition) was measured using high resolution inductively coupled plasma mass spectrometry (HR ICP-MS; Element 2, Thermo Finnigan; see Layglon et al, 2021 for detailed analysis). Quantification was performed by using external matrix matching calibration.…”