Ocean acidification conditions increase resilience of marine diatoms.

ABSTRACT: The fate of diatoms in future acidified oceans could have dramatic implications on marine ecosystems, because they account for ~40% of marine primary production. Here, we quantify resilience of Thalassiosira pseudonana in mid-20th century (300 ppm CO₂) and future (1000 ppm CO₂) conditions that cause ocean acidification, using a stress test that probes its ability to recover from incrementally higher amount of low-dose ultraviolet A (UVA) and B (UVB) radiation and re-initiate growth in day-night cycles, limited by nitrogen. While all cultures eventually collapse, those growing at 300 ppm CO₂ succumb sooner. The underlying mechanism for collapse appears to be a system failure resulting from "loss of relational resilience," that is, inability to adopt physiolo

SUBMITTER: Valenzuela JJ 

PROVIDER: S-EPMC5997998 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature