Ocean Acidification: pH Variability Across Space and Time

Near-shore Antarctic pH variability has implications for the design of ocean acidification experiments

Understanding how declining seawater pH caused by anthropogenic carbon emissions, or ocean acidification, impacts Southern Ocean biota is limited by a paucity of pH time-series. Here, we present the first high-frequency in-situ pH time-series in near-shore Antarctica from spring to winter under annual sea ice. Observations from autonomous pH sensors revealed a seasonal increase of 0.3 pH units....

Assessment of pH variability at a coastal CO2 vent for ocean acidification studies

Marine environments with naturally high CO2 concentrations have become important research sites for studying the impacts of future ocean acidification on biological processes. We conducted high temporal resolution pH and temperature measurements in and around a shallow (2.5e3 m) CO2 vent site off Ischia, Italy in May and June 2008. Loggers were deployed at five stations to monitor water at both...

Erratum: Near-shore Antarctic pH variability has implications for the design of ocean acidification experiments

Coral calcifying fluid pH dictates response to ocean acidification

Ocean acidification driven by rising levels of CO2 impairs calcification, threatening coral reef growth. Predicting how corals respond to CO2 requires a better understanding of how calcification is controlled. Here we show how spatial variations in the pH of the internal calcifying fluid (pHcf) in coral (Stylophora pistillata) colonies correlates with differential sensitivity of calcification t...

Advancing Ocean Acidification Biology Using Durafet® pH Electrodes

1 Laboratoire d’Océanographie de Villefranche, Sorbonne Universités, Université Pierre et Marie Curie, CNRS-INSU, Villefranche-sur-Mer, France, 2 Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States, 3 Ecology and Evolutionary Biology, University of California, Santa Cruz, Santa Cruz, CA, United States, 4 Institute for Sustainable Development and...