Reservoir and Riverine Sources of Cyanotoxins in Oregon’s Cascade Range Rivers Tapped for Drinking Water Supply DOI Creative Commons
Kurt D. Carpenter, Barry H. Rosen,

David Donahue

et al.

Phycology, Journal Year: 2025, Volume and Issue: 5(2), P. 16 - 16

Published: April 30, 2025

Reservoirs and downstream rivers draining Oregon’s Cascade Range provide critical water supplies for over 1.5 million residents in dozens of communities. These waters also support planktonic benthic cyanobacteria that produce cyanotoxins may degrade quality drinking, recreation, aquatic life, other beneficial uses. This 2016–2020 survey examined the sources transport four cyanotoxins—microcystins, cylindrospermopsins, anatoxins, saxitoxins—in six river systems feeding 18 drinking treatment plants (DWTPs) northwestern Oregon. Benthic cyanobacteria, plankton net tows, (or) Solid-Phase Adsorption Toxin Tracking (SPATT) samples were collected from 65 sites, including tributaries, reservoirs, main stems, sites at or upstream DWTPs. Concentrated extracts (320 samples) analyzed with enzyme-linked immuno-sorbent assays (ELISA), resulting >90% detection. (n = 80) mostly Nostoc, Phormidium, Microcoleus, Oscillatoria, yielded microcystins (76% detection), cylindrospermopsins (41%), anatoxins (45%), saxitoxins (39%). Plankton tow tributaries stems 94) contained (84%), (77%), (25%), (22%), revealing their seston. SPATT sampler 146) (81%), (66%), (37%), (32%), indicating presence dissolved water. Reservoir 15), most often containing Dolichospermum, (87%), (73%), (47%), but no saxitoxins. The high detection frequencies DWTP intakes, popular where salmon steelhead continue to exist, highlight need additional study on these factors promote production cyanotoxins, minimize effects humans, ecosystems, economies.

Language: Английский

Reservoir and Riverine Sources of Cyanotoxins in Oregon’s Cascade Range Rivers Tapped for Drinking Water Supply DOI Creative Commons
Kurt D. Carpenter, Barry H. Rosen,

David Donahue

et al.

Phycology, Journal Year: 2025, Volume and Issue: 5(2), P. 16 - 16

Published: April 30, 2025

Reservoirs and downstream rivers draining Oregon’s Cascade Range provide critical water supplies for over 1.5 million residents in dozens of communities. These waters also support planktonic benthic cyanobacteria that produce cyanotoxins may degrade quality drinking, recreation, aquatic life, other beneficial uses. This 2016–2020 survey examined the sources transport four cyanotoxins—microcystins, cylindrospermopsins, anatoxins, saxitoxins—in six river systems feeding 18 drinking treatment plants (DWTPs) northwestern Oregon. Benthic cyanobacteria, plankton net tows, (or) Solid-Phase Adsorption Toxin Tracking (SPATT) samples were collected from 65 sites, including tributaries, reservoirs, main stems, sites at or upstream DWTPs. Concentrated extracts (320 samples) analyzed with enzyme-linked immuno-sorbent assays (ELISA), resulting >90% detection. (n = 80) mostly Nostoc, Phormidium, Microcoleus, Oscillatoria, yielded microcystins (76% detection), cylindrospermopsins (41%), anatoxins (45%), saxitoxins (39%). Plankton tow tributaries stems 94) contained (84%), (77%), (25%), (22%), revealing their seston. SPATT sampler 146) (81%), (66%), (37%), (32%), indicating presence dissolved water. Reservoir 15), most often containing Dolichospermum, (87%), (73%), (47%), but no saxitoxins. The high detection frequencies DWTP intakes, popular where salmon steelhead continue to exist, highlight need additional study on these factors promote production cyanotoxins, minimize effects humans, ecosystems, economies.

Language: Английский

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