Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes
The boreal Atlantic cod (Gadus morhua) is entering the Arctic in response to rising water temperatures, likely increasing predation pressure on the endemic key species Polar cod (Boreogadus saida). In this thesis, I investigated the whole-animal performance of both fish species after long-term accli...
Main Author: | |
---|---|
Format: | Thesis |
Language: | unknown |
Published: |
Universitätsbibliothek Bremen
2019
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/51496/ https://epic.awi.de/id/eprint/51496/1/DissertationKKunz.pdf https://hdl.handle.net/10013/epic.a8663d71-1b49-4029-85bf-27ab3e1cb71d https://hdl.handle.net/ |
id |
ftawi:oai:epic.awi.de:51496 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:51496 2023-05-15T14:25:03+02:00 Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes Kunz, Kristina 2019-07-02 application/pdf https://epic.awi.de/id/eprint/51496/ https://epic.awi.de/id/eprint/51496/1/DissertationKKunz.pdf https://hdl.handle.net/10013/epic.a8663d71-1b49-4029-85bf-27ab3e1cb71d https://hdl.handle.net/ unknown Universitätsbibliothek Bremen https://epic.awi.de/id/eprint/51496/1/DissertationKKunz.pdf https://hdl.handle.net/ Kunz, K. orcid:0000-0002-5524-0103 (2019) Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes , PhD thesis, hdl:10013/epic.a8663d71-1b49-4029-85bf-27ab3e1cb71d EPIC3Universitätsbibliothek Bremen, 235 p. Thesis notRev 2019 ftawi 2021-12-24T15:45:22Z The boreal Atlantic cod (Gadus morhua) is entering the Arctic in response to rising water temperatures, likely increasing predation pressure on the endemic key species Polar cod (Boreogadus saida). In this thesis, I investigated the whole-animal performance of both fish species after long-term acclimation to future ocean acidification and warming conditions in order to estimate their future competitive strength. More precisely, I focused on aerobic performance such as baseline and maximum metabolism, as well as energetic investment into growth and swimming as indicators for fitness capacity under future ocean conditions. While G. morhua was thriving under conditions projected for the year 2100, the competitive strength of B. saida likely decreases. F.i., the growth performance of B. saida decreased at temperatures above 6 degree Celsius and the swimming performance was impaired under elevated PCO2 levels, potentially resulting in a higher vulnerability to predation and reduced foraging success. Thesis Arctic Arctic atlantic cod Boreogadus saida Gadus morhua Ocean acidification polar cod Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The boreal Atlantic cod (Gadus morhua) is entering the Arctic in response to rising water temperatures, likely increasing predation pressure on the endemic key species Polar cod (Boreogadus saida). In this thesis, I investigated the whole-animal performance of both fish species after long-term acclimation to future ocean acidification and warming conditions in order to estimate their future competitive strength. More precisely, I focused on aerobic performance such as baseline and maximum metabolism, as well as energetic investment into growth and swimming as indicators for fitness capacity under future ocean conditions. While G. morhua was thriving under conditions projected for the year 2100, the competitive strength of B. saida likely decreases. F.i., the growth performance of B. saida decreased at temperatures above 6 degree Celsius and the swimming performance was impaired under elevated PCO2 levels, potentially resulting in a higher vulnerability to predation and reduced foraging success. |
format |
Thesis |
author |
Kunz, Kristina |
spellingShingle |
Kunz, Kristina Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes |
author_facet |
Kunz, Kristina |
author_sort |
Kunz, Kristina |
title |
Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes |
title_short |
Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes |
title_full |
Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes |
title_fullStr |
Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes |
title_full_unstemmed |
Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes |
title_sort |
energy budget, growth and exercise as proxies for performance capacity and fitness in arctic fishes |
publisher |
Universitätsbibliothek Bremen |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/51496/ https://epic.awi.de/id/eprint/51496/1/DissertationKKunz.pdf https://hdl.handle.net/10013/epic.a8663d71-1b49-4029-85bf-27ab3e1cb71d https://hdl.handle.net/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic atlantic cod Boreogadus saida Gadus morhua Ocean acidification polar cod |
genre_facet |
Arctic Arctic atlantic cod Boreogadus saida Gadus morhua Ocean acidification polar cod |
op_source |
EPIC3Universitätsbibliothek Bremen, 235 p. |
op_relation |
https://epic.awi.de/id/eprint/51496/1/DissertationKKunz.pdf https://hdl.handle.net/ Kunz, K. orcid:0000-0002-5524-0103 (2019) Energy budget, growth and exercise as proxies for performance capacity and fitness in Arctic fishes , PhD thesis, hdl:10013/epic.a8663d71-1b49-4029-85bf-27ab3e1cb71d |
_version_ |
1766297481533980672 |