2020 journal article
Biomass of the Cyanobacterium Lyngbya wollei Alters Copper Algaecide Exposure and Risks to a Non-target Organism
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 104, 228–234.
author keywords: Copper; Cyanobacteria; Algaecide; Lyngbya wollei; Management
MeSH headings : Animals; Biodegradation, Environmental; Biomass; Copper / metabolism; Copper / toxicity; Cyanobacteria / metabolism; Daphnia / metabolism; Environmental Exposure / adverse effects; Environmental Exposure / prevention & control; Herbicides / metabolism; Herbicides / toxicity; Water Pollutants, Chemical / metabolism; Water Pollutants, Chemical / toxicity
TL;DR:
Risks associated with a commonly applied chelated copper algaecide to a sentinel non-target species and alteration of the exposure and toxicity when a nuisance mat-forming cyanobacterium, Lyngbya wollei, was present in exposures are evaluated.
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UN Sustainable Development Goal Categories
6. Clean Water and Sanitation
(Web of Science)
13. Climate Action
(Web of Science)
15. Life on Land
(Web of Science)
Source: Web Of Science
Added: December 9, 2019
Nuisance algal infestations are increasing globally in distribution and frequency. Copper-based algaecides are routinely applied to control these infestations, though there is an ever-present concern of risks to non-target species. This research evaluated risks associated with a commonly applied chelated copper algaecide (Captain® XTR; SePRO Corporation) to a sentinel non-target species (Daphnia magna) and further assessed alteration of the exposure and toxicity when a nuisance mat-forming cyanobacterium, Lyngbya wollei, was present in exposures. Aqueous copper concentrations in treatments with algae significantly decreased within 1 h after treatment and averaged 57.5% of nominal amended Cu through the experiment duration. The 48 h LC 50 values were 371 µg Cu/L with no algae present in exposures and increased significantly to 531 µg Cu/L when L. wollei was simultaneously exposed. This research provides information on the short-term fate of copper and hazard assessment by incorporating targeted binding ligands, as present in operational treatments.