The coral reef-dwelling Peneroplis spp. shows calcification recovery to ocean acidification conditions.

ABSTRACT: Large Benthic Foraminifera are a crucial component of coral-reef ecosystems, which are currently threatened by ocean acidification. We conducted culture experiments to evaluate the impact of low pH on survival and test dissolution of the symbiont-bearing species Peneroplis spp., and to observe potential calcification recovery when specimens are placed back under reference pH value (7.9). We found that Peneroplis spp. displayed living activity up to 3 days at pH 6.9 (Ω_cal < 1) or up to 1 month at pH 7.4 (Ω_cal > 1), despite the dark and unfed conditions. Dissolution features were observed under low Ω_cal values, such as changes in test density, peeled extrados layers, and decalcified tests with exposed organic linings. A new calcification phase started when sp

SUBMITTER: Charrieau LM 

PROVIDER: S-EPMC9013382 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature