This map shows how carbon dioxide from land flows out across Monterey Bay with morning land breezes. Base image: Google Earth MBARI researchers recently measured high concentrations of carbon dioxide in air blowing out to sea from cities and agricultural areas, including Silicon Valley. In a new paper in PLOS
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Tipping points of gastric pH regulation and energetics in the sea urchin larva exposed to CO2 induced seawater acidification
Highlights We determined the sensitivity thresholds for survival development and growth in sea urchin larvae exposed to acidified conditions. Determination of physiological parameters including midgut pH homeostasis, metabolic rates and expression of midgut acid-base transporters demonstrates a physiological tipping point at pH 7.2. This work demonstrates substantial resilience of an important
Impacts of urban carbon dioxide emissions on sea-air flux and ocean acidification in nearshore waters
Devon Northcott, Jeff Sevadjian, Diego A. Sancho-Gallegos, Chris Wahl, Jules Friederich, Francisco P. Chavez Abstract Greatly enhanced atmospheric carbon dioxide (CO2) levels relative to well-mixed marine air are observed during periods of offshore winds at coastal sensor platforms in Monterey Bay, California, USA. The highest concentrations originate from urban and
Better Regional Ocean Observing Through Cross-National Cooperation: A Case Study From the Northeast Pacific
John A. Barth1*, Susan E. Allen2, Edward P. Dever1, Richard K. Dewey3, Wiley Evans4, Richard A. Feely5, Jennifer L. Fisher1,6, Jonathan P. Fram1, Burke Hales1, Debby Ianson2,7, Jennifer Jackson4, Kim Juniper3,8, Orest Kawka9, Deborah Kelley9, Jody M. Klymak8, John Konovsky10, P. Michael Kosro1, Alexander Kurapov1,11, Emilio Mayorga9, Parker MacCready9, Jan
“Burke-O-Lator” detecting concerning acidic levels in Humboldt Bay
The “Burke-o-Lator,” set up at the Hog Island Oyster Company’s hatchery on Humboldt Bay, examines ways seawater chemistry is being affected by ocean acidification. Unlike other oceanographic sensors that measure only acidity (pH), the Burke-o-Lator also collects information on seawater’s carbonate saturation state, which shows how difficult it is to