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Larval fish body growth responses to simultaneous browning and warming

Huss, Magnus and Van Dorst, Renee and Gårdmark, Anna (2021). Larval fish body growth responses to simultaneous browning and warming. Ecology and Evolution. 11 , 15132-15140
[Research article]

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Organisms are facing global climate change and other anthropogenic pressures, but most research on responses to such changes only considers effects of single drivers. Observational studies and physiological experiments suggest temperature increases will lead to faster growth of small fish. Whether this effect of warming holds in more natural food web settings with concurrent changes in other drivers, such as darkening water color ("browning") is, however, unknown. Here, we set up a pelagic mesocosm experiment with large bags in the Baltic Sea archipelago, inoculated with larval Eurasian perch (Perca fluviatilis) and zooplankton prey and varying in temperature and color, to answer the question how simultaneous warming and browning of coastal food webs impact body growth and survival of larval perch. We found that browning decreased body growth and survival of larval perch, whereas warming increased body growth but had no effect on survival. Based on daily fish body growth estimates based on otolith microstructure analysis, and size composition and abundance of available prey, we explain how these results may come about through a combination of physiological responses to warming and lower foraging efficiency in brown waters. We conclude that larval fish responses to climate change thus may depend on the relative rate and extent of both warming and browning, as they may even cancel each other out.

Authors/Creators:Huss, Magnus and Van Dorst, Renee and Gårdmark, Anna
Title:Larval fish body growth responses to simultaneous browning and warming
Series Name/Journal:Ecology and Evolution
Year of publishing :2021
Page range:15132-15140
Number of Pages:9
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Baltic Sea, climate change, perch, temperature, water color, zooplankton
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Additional ID:
Type of IDID
Web of Science (WoS)000702996900001
ID Code:26241
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Aquatic Resources
Deposited By: SLUpub Connector
Deposited On:30 Nov 2021 09:25
Metadata Last Modified:30 Nov 2021 09:31

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