Legacy habitat contamination as a limiting factor for Chinook salmon recovery in the Willamette Basin, Oregon, USA

Lundin, Jessica I.; Spromberg, Julann A.; Jorgensen, Jeffrey C.; Myers, James M.; Chittaro, Paul M.; Zabel, Richard W.; Johnson, Lyndal L.; Neely, Robert M.; Scholz, Nathaniel L.

doi:10.1371/journal.pone.0214399

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Legacy habitat contamination as a limiting factor for Chinook salmon recovery in the Willamette Basin, Oregon, USA

2019
By Lundin, Jessica I. ; Spromberg, Julann A. ; Jorgensen, Jeffrey C. ; ...
Source: PLoS ONE 14(3): e0214399

[PDF-1.96 MB]

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Journal Title:

PLoS ONE
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Lundin, Jessica I. ; Spromberg, Julann A. ; Jorgensen, Jeffrey C. ; Myers, James M. ; Chittaro, Paul M. ; ... More +

Lundin, Jessica I. ; Spromberg, Julann A. ; Jorgensen, Jeffrey C. ; Myers, James M. ; Chittaro, Paul M. ; Zabel, Richard W. ; Johnson, Lyndal L. ; Neely, Robert M. ; Scholz, Nathaniel L. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) ; NOS (National Ocean Service) ; ORR (Office of Response and Restoration)

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) ; NOS (National Ocean Service) ; ORR (Office of Response and Restoration) Less -
Description:

In the western United States, the long-term recovery of many Pacific salmon populations is inextricably linked to freshwater habitat quality. Industrial activities from the past century have left a legacy of pollutants that persist, particularly near working waterfronts. The adverse impacts of these contaminants on salmon health have been studied for decades, but the population-scale consequences of chemical exposure for salmonids are still poorly understood. We estimated acute and delayed mortality rates for seaward migrating juvenile Chinook salmon that feed and grow in a Superfund-designated area in the Lower Willamette River in Portland, Oregon. We combined previous, field-collected exposure data for juvenile Chinook salmon together with reduced growth and disease resistance data from earlier field and laboratory studies. Estimates of mortality were then incorporated into a life cycle model to explore chemical habitat-related fish loss. We found that 54% improved juvenile survival—potentially as a result of future remediation activities—could increase adult Chinook salmon population abundance by more than 20%. This study provides a framework for evaluating pollution remediation as a positive driver for species recovery.
Keywords:

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Chinook Salmon Effect Of Water Pollution On Habitat (Ecology) Wildlife Recovery
Source:

PLoS ONE 14(3): e0214399
DOI:

https://doi.org/10.1371/journal.pone.0214399
Pubmed Central ID:

PMC6430382
Document Type:

Journal Article
Place as Subject:

Willamette River Watershed (Or.)
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CC0 1.0
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PMC
Main Document Checksum:

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urn:sha256:bde9515cfadc305f3a45cfc96e48657992634fe61f3af8f733033edb941a1662
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https://repository.library.noaa.gov/view/noaa/31818/noaa_31818_DS1.pdf
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Legacy habitat contamination as a limiting factor for Chinook salmon recovery in the Willamette Basin, Oregon, USA

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