Overwinter survival of juvenile Atlantic cod (Gadus morhua) in a costal ecosystem ...
Acknowledging poor understanding of natural mortality in juvenile fish, especially throughout first winter, I synthesized past studies that suggest that physiological and metabolic stress in the first winter result in a critical survival period that determines cohort strength. Juvenile Atlantic cod...
Main Author: | |
---|---|
Format: | Text |
Language: | English |
Published: |
Memorial University of Newfoundland
2022
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48336/kqwv-fj98 https://research.library.mun.ca/15804/ |
id |
ftdatacite:10.48336/kqwv-fj98 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48336/kqwv-fj98 2023-05-15T15:27:03+02:00 Overwinter survival of juvenile Atlantic cod (Gadus morhua) in a costal ecosystem ... Geissinger, Emilie A. 2022 https://dx.doi.org/10.48336/kqwv-fj98 https://research.library.mun.ca/15804/ en eng Memorial University of Newfoundland Text ScholarlyArticle article-journal 2022 ftdatacite https://doi.org/10.48336/kqwv-fj98 2023-04-03T17:39:52Z Acknowledging poor understanding of natural mortality in juvenile fish, especially throughout first winter, I synthesized past studies that suggest that physiological and metabolic stress in the first winter result in a critical survival period that determines cohort strength. Juvenile Atlantic cod (Gadus morhua) in coastal Newfoundland settle in nearshore habitats in 3-6 pulsed events each year, creating a broad size-structured age-0 year-class with potentially different survival trajectories entering their first winter. To assess size-specific survival across winter, I classified age-0 and age-1 pulse structure using finite mixture distribution models. I evaluated juvenile cod survey data and archived juvenile cod samples with winter temperature records to determine effects of winter duration, body condition, and settlement time on overwinter survival. Higher condition entering winter and smaller size combined with earlier fall settlement all improved overwinter survival among pulses. Increased body ... Text atlantic cod Gadus morhua Newfoundland DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
Acknowledging poor understanding of natural mortality in juvenile fish, especially throughout first winter, I synthesized past studies that suggest that physiological and metabolic stress in the first winter result in a critical survival period that determines cohort strength. Juvenile Atlantic cod (Gadus morhua) in coastal Newfoundland settle in nearshore habitats in 3-6 pulsed events each year, creating a broad size-structured age-0 year-class with potentially different survival trajectories entering their first winter. To assess size-specific survival across winter, I classified age-0 and age-1 pulse structure using finite mixture distribution models. I evaluated juvenile cod survey data and archived juvenile cod samples with winter temperature records to determine effects of winter duration, body condition, and settlement time on overwinter survival. Higher condition entering winter and smaller size combined with earlier fall settlement all improved overwinter survival among pulses. Increased body ... |
format |
Text |
author |
Geissinger, Emilie A. |
spellingShingle |
Geissinger, Emilie A. Overwinter survival of juvenile Atlantic cod (Gadus morhua) in a costal ecosystem ... |
author_facet |
Geissinger, Emilie A. |
author_sort |
Geissinger, Emilie A. |
title |
Overwinter survival of juvenile Atlantic cod (Gadus morhua) in a costal ecosystem ... |
title_short |
Overwinter survival of juvenile Atlantic cod (Gadus morhua) in a costal ecosystem ... |
title_full |
Overwinter survival of juvenile Atlantic cod (Gadus morhua) in a costal ecosystem ... |
title_fullStr |
Overwinter survival of juvenile Atlantic cod (Gadus morhua) in a costal ecosystem ... |
title_full_unstemmed |
Overwinter survival of juvenile Atlantic cod (Gadus morhua) in a costal ecosystem ... |
title_sort |
overwinter survival of juvenile atlantic cod (gadus morhua) in a costal ecosystem ... |
publisher |
Memorial University of Newfoundland |
publishDate |
2022 |
url |
https://dx.doi.org/10.48336/kqwv-fj98 https://research.library.mun.ca/15804/ |
genre |
atlantic cod Gadus morhua Newfoundland |
genre_facet |
atlantic cod Gadus morhua Newfoundland |
op_doi |
https://doi.org/10.48336/kqwv-fj98 |
_version_ |
1766357509582356480 |