Hypoxia's impact on pelagic fish populations in Lake Erie: a tale of two planktivores

Stone, Joshua P.; Pangle, Kevin L.; Pothoven, Steven A.; Vanderploeg, Henry A.; Brandt, Stephen B.; Höök, Tomas O.; Johengen, Thomas H.; Ludsin, Stuart A.

doi:10.1139/cjfas-2019-0265

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Hypoxia's impact on pelagic fish populations in Lake Erie: a tale of two planktivores

2020
By Stone, Joshua P. ; Pangle, Kevin L. ; Pothoven, Steven A. ; ...
Source: Canadian Journal of Fisheries and Aquatic Sciences, 77(7) 1-18

[PDF-3.97 MB]

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Details:

Journal Title:

Canadian Journal of Fisheries and Aquatic Sciences
Personal Author:

Stone, Joshua P. ; Pangle, Kevin L. ; Pothoven, Steven A. ; Vanderploeg, Henry A. ; Brandt, Stephen B. ; ... More +

Stone, Joshua P. ; Pangle, Kevin L. ; Pothoven, Steven A. ; Vanderploeg, Henry A. ; Brandt, Stephen B. ; Höök, Tomas O. ; Johengen, Thomas H. ; Ludsin, Stuart A. Less -
NOAA Program & Office:

NOS (National Ocean Service) ; NCCOS (National Centers for Coastal Ocean Science) ; OAR (Oceanic and Atmospheric Research) ; GLERL (Great Lakes Environmental Research Laboratory) ; CIGLR (Cooperative Institute for Great Lakes Research)

NOS (National Ocean Service) ; NCCOS (National Centers for Coastal Ocean Science) ; OAR (Oceanic and Atmospheric Research) ; GLERL (Great Lakes Environmental Research Laboratory) ; CIGLR (Cooperative Institute for Great Lakes Research) Less -
Description:

Whether bottom hypoxia has long-lasting consequences for pelagic fish populations remains speculative for most ecosystems. We explored hypoxia’s influence on two pelagic zooplanktivores in Lake Erie that have different thermal preferences: cold-water rainbow smelt (Osmerus mordax) and warm-water emerald shiners (Notropis atherinoides). To assess acute effects, we combined predictive bioenergetics-based modeling with field collections made across the hypoxic season in central Lake Erie during 2005 and 2007. To assess chronic effects, we related fishery-independent and fishery-dependent catches with hypoxia severity and top predator (walleye, Sander vitreus) abundance during 1986–2014. As our modeling predicted, hypoxia altered rainbow smelt movement and distributions, leading to avoidance of cold, hypoxic bottom waters. In response, diets shifted from benthic to pelagic organisms, and consumption and energetic condition declined. These changes were lacking in emerald shiners. Our long-term analyses showed rainbow smelt abundance and hypoxia to be negatively related and suggested that hypoxia avoidance increases susceptibility to commercial fishing and walleye predation. Collectively, our findings indicate that hypoxia can negatively affect pelagic fish populations over the long term, especially those requiring cold water.
Keywords:

[+]

Mathematical Models Ocean Surface Topography Remote Sensing Salt Marsh Ecology
Source:

Canadian Journal of Fisheries and Aquatic Sciences, 77(7) 1-18
DOI:

https://doi.org/10.1139/cjfas-2019-0265
Document Type:

Journal Article
Funding:

Grant no. NA17OAR4320152 ; Grant no. NA07OAR432000 ; Grant no. NA16NOS4780202

Grant no. NA17OAR4320152 ; Grant no. NA07OAR432000 ; Grant no. NA16NOS4780202 Less -
Place as Subject:

Florida ; Mississippi ; Massachusetts ; United States

Florida ; Mississippi ; Massachusetts ; United States Less -
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:c21cc8dd1e92da197030c5b87d5fa9693a892ecb56c228cf7988dc364133d13b
Download URL:

https://repository.library.noaa.gov/view/noaa/28807/noaa_28807_DS1.pdf
File Type:

Supplemental text, media

htm

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