Here, we report on the raw and coassembled metatranscriptomes of 39 Lake Erie surface (1.0 m) water samples collected over a 2-day diel period encompassing episodic weather and bloom events. Preliminary taxonomic annotations and read mappings revealed that spp.
View Article and Find Full Text PDFEnviron Sci Process Impacts
November 2022
In Lake Erie, toxin-forming harmful algal blooms (HABs) occur following high concentrations of hydrogen peroxide (HO). Correlation between HO concentrations and HABs revealed knowledge gaps on the controls of HO production in Lake Erie. One way HO is produced is upon absorption of sunlight by the chromophoric fraction of dissolved organic matter (CDOM).
View Article and Find Full Text PDFIn the oligotrophic oceans, key autotrophs depend on "helper" bacteria to reduce oxidative stress from hydrogen peroxide (HO) in the extracellular environment. HO is also a ubiquitous stressor in freshwaters, but the effects of HO on autotrophs and their interactions with bacteria are less well understood in freshwaters. Naturally occurring HO in freshwater systems is proposed to impact the proportion of microcystin-producing (toxic) and non-microcystin-producing (nontoxic) in blooms, which influences toxin concentrations and human health impacts.
View Article and Find Full Text PDFMembrane fouling by dissolved organic matter (DOM), especially microbially-derived DOM, is a major challenge for ultrafiltration (UF) membranes in water purification. Fouling may be mitigated by pretreating feed waters; however, there are no comprehensive studies that compare the fouling reduction efficacies across different pretreatment processes. Further, there is a limited understanding of the relationship between fouling reduction efficacy and microbially-derived DOM removal from source waters.
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