Acid-base physiology over tidal periods in the mussel Mytilus edulis: size and temperature are more influential than seawater pH.

ABSTRACT: Ocean acidification (OA) studies to date have typically used stable open-ocean pH and CO₂ values to predict the physiological responses of intertidal species to future climate scenarios, with few studies accounting for natural fluctuations of abiotic conditions or the alternating periods of emersion and immersion routinely experienced during tidal cycles. Here, we determine seawater carbonate chemistry and the corresponding in situ haemolymph acid-base responses over real time for two populations of mussel ( Mytilus edulis) during tidal cycles, demonstrating that intertidal mussels experience daily acidosis during emersion. Using these field data to parameterize experimental work we demonstrate that air temperature and mussel size strongly influence this acidosis, with larger mu

SUBMITTER: Mangan S 

PROVIDER: S-EPMC6408882 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature