Synchrony of alewife, Alosa pseudoharengus, year-class strength in the Great Lakes region

Warren, Les D.; Honsey, Andrew E.; Bunnell, David B.; Collingsworth, Paris D.; Hondorp, Darryl W.; Madenjian, Charles P.; Warner, David M.; Weidel, Brian C.; Hӧӧk, Tomas O.

doi:10.1139/cjfas-2023-0322

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

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Synchrony of alewife, Alosa pseudoharengus, year-class strength in the Great Lakes region

2024
By Warren, Les D. ; Honsey, Andrew E. ; Bunnell, David B. ; ...
Source: Canadian Journal of Fisheries and Aquatic Sciences, 81(10), 1456-1467

[PDF-1.67 MB]

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Journal Title:

Canadian Journal of Fisheries and Aquatic Sciences
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Warren, Les D. ; Honsey, Andrew E. ; Bunnell, David B. ; Collingsworth, Paris D. ; Hondorp, Darryl W. ; ... More +

Warren, Les D. ; Honsey, Andrew E. ; Bunnell, David B. ; Collingsworth, Paris D. ; Hondorp, Darryl W. ; Madenjian, Charles P. ; Warner, David M. ; Weidel, Brian C. ; Hӧӧk, Tomas O. Less -
NOAA Program & Office:

Sea Grant
Description:

Fish recruitment is interannually variable and challenging to predict. Annual recruitment is often regionally synchronized among populations and identifying drivers of such synchrony may help shed light on recruitment dynamics. We investigated interannual variation of alewife Alosa pseudoharengus recruitment by estimating year-class strength for populations from three of the Laurentian Great Lakes (lakes Huron, Michigan, and Ontario) using annual assessment survey data from 1968 to 2022. We first determined the age when year-class strength was set for each dataset. We then used a mixed-modeling approach incorporating age, year-class, and sampling year to estimate year-class strength for each study lake. Thereafter, we evaluated regional synchrony in year-class strength across the three lakes and evaluated potential climatic drivers of synchrony. Our results suggest that alewife year-class strength is set by age-1. Our model-derived indices of alewife year-class strength were synchronized among the three lakes, and we identified spring-summer degree-days as a potential regional driver of synchrony. This analysis highlights the potential for strong influence of climatic conditions on fish recruitment in large freshwater systems.
Source:

Canadian Journal of Fisheries and Aquatic Sciences, 81(10), 1456-1467
DOI:

https://doi.org/10.1139/cjfas-2023-0322
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0706-652X;1205-7533;
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pdf
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Canadian Science Publishing
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Journal Article
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urn:sha-512:a22f7437f1bfa00979b5355709dc9c36e08ad6dfcff399282b1bf43c3b36a384702f0fc233c2bbcad2a8fbdffe76ad8feda53960798c44ed8c75eeaf9bfb4bbf
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Synchrony of alewife, Alosa pseudoharengus, year-class strength in the Great Lakes region

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