Urban Roadway Runoff Is Lethal to Juvenile Coho, Steelhead, and Chinook Salmonids, But Not Congeneric Sockeye

French, B. F.; Baldwin, D. H.; Cameron, J.; Prat, J.; King, K.; Davis, J. W.; McIntyre, J. K.; Scholz, N. L.

doi:10.1021/acs.estlett.2c00467

i

Urban Roadway Runoff Is Lethal to Juvenile Coho, Steelhead, and Chinook Salmonids, But Not Congeneric Sockeye

Supporting Files

2022
By French, B. F. ; Baldwin, D. H. ; Cameron, J. ; ...

Details

Journal Title:

Environmental Science & Technology Letters
Personal Author:

French, B. F. ; Baldwin, D. H. ; Cameron, J. ; Prat, J. ; King, K. ; Davis, J. W. ; McIntyre, J. K. ; Scholz, N. L.
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) ; OPR (Office of Protected Resources)
Description:

We compared the sensitivity of closely related Pacific salmon and steelhead (Oncorhynchus spp.) to untreated urban stormwater runoff across three storm events. Juvenile coho, sockeye, steelhead, and Chinook were exposed for 24 h to untreated urban runoff and then transferred to clean water for 48 h. As anticipated from previous studies, coho were highly susceptible to runoff toxicity, with cumulative mortality rates ranging from 92%–100% across the three storms. By contrast, juvenile sockeye were unaffected (100% survival), and cumulative mortality rates were intermediate for steelhead (4%–42%) and Chinook (0%–13%). Furthermore, coho died rapidly following the onset of stormwater exposure (generally <4 h), whereas mortality in Chinook and steelhead was delayed by 1–2 days. Similar to previous findings for coho, steelhead and Chinook did not recover when transferred to clean water. Lastly, significant mortality occurred in coho even when roadway runoff was diluted by 95% in clean water. Our findings extend the urban runoff mortality syndrome in salmonids and point to a near-term need for sublethal studies in steelhead and Chinook to more precisely understand stormwater risks to threatened species recovery efforts in the western United States.
Keywords:

Microplastics Mortality Oncorhynchus Urban Runoff Urban Runoff 6PPD-quinone Ecology Endangered Species Environmental Chemistry Health, Toxicology And Mutagenesis Microplastics Pollution Stormwater Tire Wear Particles Urbanization Urban Runoff Mortality Syndrome Waste Management And Disposal Water Science And Technology
Source:

Environmental Science & Technology Letters, 9(9), 733-738
DOI:

https://doi.org/10.1021/acs.estlett.2c00467
Document Type:

Journal Article
Rights Information:

CC BY-NC-ND
Compliance:

Submitted
Main Document Checksum:

urn:sha256:ba5e5a82972d1430eb8219d78ae84fab694b14fc3a5853ac3de6d7c9ce74db29
Download URL:

https://repository.library.noaa.gov/view/noaa/46667/noaa_46667_DS1.pdf
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[PDF - 1.88 MB ]

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