Data for: High site-fidelity and low mortality of juvenile Atlantic cod (Gadus morhua) in subarctic coastal Newfoundland during their first winter

This dataset contains capture-mark-recapture data of juvenile Atlantic cod (Gadus morhua) in subarctic coastal Newfoundland during their first winter. We evaluated size-structured overwinter mortality and movement using mark-recapture and condition metrics by marking 226 cod in two batches one week...

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Bibliographic Details
Main Authors: Geissinger, Emilie A., Gregory, Robert S., Laurel, Benjamin J., Snelgrove, Paul V. R.
Format: Dataset
Language:unknown
Published: Scholars Portal Dataverse 2021
Subjects:
Aldrich
atlantic cod
Gadus morhua
Newfoundland
Subarctic
Online Access:https://dx.doi.org/10.5683/sp3/npqslv
https://dataverse.scholarsportal.info/citation?persistentId=doi:10.5683/SP3/NPQSLV
Description
Summary:This dataset contains capture-mark-recapture data of juvenile Atlantic cod (Gadus morhua) in subarctic coastal Newfoundland during their first winter. We evaluated size-structured overwinter mortality and movement using mark-recapture and condition metrics by marking 226 cod in two batches one week apart, in October 2016. We estimated fall and overwinter mortality, and documented movement of fish recaptured in May 2017 using Cormack-Jolly-Seber models. We applied fluorochrome markers – calcein (Sigma-Aldrich: C0875-25G) or alizarin red S (Sigma-Aldrich: A5533-25G) – to batch mark otoliths (Schmitt, 1982; Vigliola, 1997). A subsample of 60 otoliths from May 2017 recaptures was used for trace element analysis using secondary ion mass spectrometry (SIMS). See the ReadMe file for more information on the method of data collection. All R code is available at CHONe-1.2.1 GitHub repository.

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