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Title: Effects of ocean acidification and ocean warming on the behavior and physiology of a subarctic, intertidal grazer
The global ocean is expected to both acidify and warm concurrently; thus, multiple-stressor manipulative experimentation is an emergent area of study that ultimately aims to examine the individual and interactive effects of these factors on marine organisms. We characterized the physiological responses to acidification and warming of the intertidal grazerLottia scutum, and examined how these ocean change variables influenced predator-prey dynamics withEvasterias troschelii,a key sea star predator. Specifically, we conducted a laboratory experiment where we exposed limpets to factorial combinations of temperature (11 and 15°C) and pH (7.6 and 8.0), and measured effects on thermal tolerance, metabolic rate, cortisol concentrations, and behavioral responses to the predator. We found that ocean warming (OW) decreased the critical thermal maxima (CTmax) and increased cortisol levels inL. scutum, whereas ocean acidification (OA) increased the mass-specific metabolic rate in this species. Additionally, we found that there was no significant effect of OA or OW on the anti-predator behavior ofL. scutumwhen exposed toE. troschelii. These results highlight the need for future studies to integrate multidisciplinary experimental designs (i.e. behavior and physiology) that span multiple levels of biological organization to make ecologically relevant predictions for how marine organisms will respond to ocean change.  more » « less
Award ID(s):
1757348
PAR ID:
10547996
Author(s) / Creator(s):
;
Publisher / Repository:
Marine Ecology Progress Series
Date Published:
Journal Name:
Marine Ecology Progress Series
Volume:
711
ISSN:
0171-8630
Page Range / eLocation ID:
31 to 45
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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