Archive for the 'Media coverage' Category

WIOMSA/ORI workshop on Ocean Acidification monitoring and experimentation in the Western Indian Ocean

In May 2019, ORI hosted a workshop on practical aspects of monitoring and testing the effects of Ocean Acidification (OA) as part of the WIOMSA (Western Indian Ocean Marine Science Association) funded Ocean Acidification network. Organised by ORI Senior Scientist, Dr David Pearton, the workshop was facilitated by Dr Sam Dupont from the University of Gothenburg in Sweden, world renowned expert on the biological effects of OA on marine organisms, and attended by colleagues and collaborators from the Universidade Eduardo Mondlane (UEM) in Maputo, Mozambique, and the South African Environmental Observation Network (SAEON) in Port Elizabeth.

Continue reading ‘WIOMSA/ORI workshop on Ocean Acidification monitoring and experimentation in the Western Indian Ocean’

Ocean acidification threatens the survival of coral reefs: study

The world’s coral reefs are under threat from ocean acidification with many corals unable to adapt to the conditions, according to a study.

The study, published in the journal Nature Climate Change, determined the capacity of coral reefs to acclimatize to ocean acidification by investigating the chemistry in the corals’ calcifying fluid.

Continue reading ‘Ocean acidification threatens the survival of coral reefs: study’

Resistance to ocean acidification in coral reef taxa is not gained by acclimatization

Ocean acidification (OA) is a major threat to coral reefs, which are built by calcareous species. However, long-term assessments of the impacts of OA are scarce, limiting the understanding of the capacity of corals and coralline algae to acclimatize to high partial pressure of carbon dioxide (pCO2) levels. Species-specific sensitivities to OA are influenced by its impacts on chemistry within the calcifying fluid (CF). Here, we investigate the capacity of multiple coral and calcifying macroalgal species to acclimatize to elevated pCO2 by determining their chemistry in the CF during a year-long experiment. We found no evidence of acclimatization to elevated pCO2 across any of the tested taxa. The effects of increasing seawater pCO2 on the CF chemistry were rapid and persisted until the end of the experiment. Our results show that acclimatization of the CF chemistry does not occur within one year, which confirms the threat of OA for future reef accretion and ecological function.

Continue reading ‘Resistance to ocean acidification in coral reef taxa is not gained by acclimatization’

The UC Davis Bodega Marine Lab: ocean acidification research at its finest

ocean acidification

Bodega Harbor, near where UC Davis Bodega Marine Lab is located. (Photo credit: Tessa Hill)

As human activity increases carbon dioxide emissions, the oceans absorb more and more carbon as a result. “The ocean can take up an amazing amount of carbon,” says Tessa Hill, Professor of Earth & Planetary Sciences, UC Davis, resident at Bodega Marine Laboratory, and Associate Director of the Coastal and Marine Sciences Institute. “But the carbon makes the ocean more acidic, and this has effects on the shell-bearing creatures of the ocean. The acidic water can corrode their shells, or keep them from properly forming shells in the first place.”

Continue reading ‘The UC Davis Bodega Marine Lab: ocean acidification research at its finest’

New ocean acidification monitoring station in American Samoa


Credit: PacIOOS

NOAA, the Pacific Islands Ocean Observing System (PacIOOS), and partners have launched a new buoy in Fagatele Bay within the National Marine Sanctuary of American Samoa to measure carbon dioxide and other important seawater characteristics within the bay’s vibrant tropical coral reef ecosystem.

“This new monitoring effort in a remote area of the Pacific Ocean will not only advance our understanding of changing ocean chemistry but will also help us communicate these changes to diverse stakeholders in the Pacific Islands and across the United States,” said Derek Manzello, coral ecologist with NOAA’s Atlantic Oceanographic and Meteorological Laboratory.

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CO₂ emissions from Silicon Valley and Salinas linked to ocean acidification in Monterey Bay

Winds transport the emissions from urban hubs, likely making waters acidic and unfavorable for many sea creatures.

Carbon dioxide, one of the main greenhouse gases linked to climate change, is not just a global problem, but a local one too, according to a recent study.

Scientists from the Monterey Bay Aquarium Research Institute (MBARI) report that CO₂ emissions from Silicon Valley and Salinas Valley are blowing over to Monterey Bay, a region renowned for its rich marine life. They suspect this CO₂ will get absorbed by the ocean, making the waters more acidic and unfavorable for many sea creatures.

“This is a first-of-its-kind study to talk about CO₂ from urban sources affecting acidification in coastal waters,” said Richard Feely, a chemical oceanographer with the National Oceanic and Atmospheric Administration, who wasn’t involved in the research. “One might expect to see the same thing occur along the East Coast and places where there is high industrial activity near the coast.”

Continue reading ‘CO₂ emissions from Silicon Valley and Salinas linked to ocean acidification in Monterey Bay’

Reports to Arctic Council confirm rapid warming, ocean acidification

New observations confirm continued rapid warming in the Arctic, driving many of the changes underway in the region, including loss of sea ice and glacier coverage, as well as changes in terrestrial and marine ecosystems. This affects Arctic communities and economies, according to a new Climate Change Update from the Arctic Monitoring and Assessment Programme (AMAP).

Arctic Ocean acidification is an emerging threat – with models predicting the possible collapse of some important Arctic commercial and subsistence fisheries, according to an Arctic Ocean Acidification Assessment. The Arctic and subarctic regions are home to important and valuable fisheries. They yield a tenth of the global commercial catch, and subsistence fisheries provide vital nutritional and cultural services to Arctic residents.

Continue reading ‘Reports to Arctic Council confirm rapid warming, ocean acidification’

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Ocean acidification in the IPCC AR5 WG II

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