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Ocean Acidification News Stream among “top 50 oceanic blogs”

The Ocean Acidification News Stream has been ranked #6 on the “Top 50 Oceanic Blogs” on the web! The ranking is put together by Feedspot.

We take this opportunity to thank all our followers!

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Ocean acidification: ‘Not just an environmental issue’

Rising sea levels are a well-documented phenomenon in scientific and political circles alike, but there is another troubling problem beneath the surface of the world’s oceans.  Sometimes dubbed ‘climate change’s equally evil twin,’ ocean acidification is a consequence of excess atmospheric CO2. Unlike city smog, ocean acidification is easy to ignore; anyone living inland is unlikely to see or feel its presence. Yet in recent years, acidification has accelerated at an alarming rate. Island nations and those most dependent on oceanic industries such as fishing are already feeling the economic effects, and political ramifications may be close behind. The United Nations already recognizes the phenomenon’s potential impact on international affairs, citing it as a risk to sustainable development, food security, and international political stability. The world’s oceans are a uniquely international interest, and understanding the threat posed by acidification will be essential to the international community going forward.

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Bacterial responses to ocean acidification

Ocean acidification, resulting from an increase in atmospheric CO2, is a growing concern as it is projected to impact all ocean regions and affect a wide variety of marine life. Although a significant amount of research has focused on studying the effects of ocean acidification (OA) on marine animal phyla and even eukaryotic phytoplankton, less attention has been focused on how OA affects marine bacteria. Both autotrophic (“producer”) and heterotrophic (“consumer”) bacteria play important roles in the marine food web; Synechococcus and Prochlorococcus (picocyanobacteria) alone contribute up to 50% of fixed carbon in the marine environment. The response of bacterioplankton to ocean acidification has been inconsistent across studies and more research is needed at multi-species and community scales as opposed to laboratory experiments on a single species of cultured bacteria.

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Alaska Ocean Acidification Network Survey

The Alaska Ocean Acidification Network is interested in your opinion and priorities.  Researchers and resources managers are monitoring ocean acidification in Alaska, and need your input to develop a build-out plan for the monitoring network. Your help will make sure the plan addresses questions that are important to Alaskans. This survey should take less than 10 minutes. The AK Ocean Acidification Network appreciates your participation.

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Timelapse of ocean acidification effects on coral

Stanford Earth’s Cassandra Brooks contributed footage to a new interactive David Attenborough project about the Great Barrier Reef. Brook’s video shows the effects of ocean acidification on the limestone skeleton of a sand dollar.

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XPRIZE Big Ocean Button Challenge – vote for the best app

The Big Ocean Button Challenge sponsored by the XPRIZE Ocean Initiative, is an app competition to advance development in ocean data sets in categories such as Fishing, Shipping and Trade, Ocean Acidification, Public Safety and Exploration. XPRIZE has received 20 submissions that are now competing for $100,000 in prizes.

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Ocean acidification more rapid in coastal oceans

New research under the joint NCCOS Competitive Research Program and NOAA Ocean Acidification Program finds the combined effects of anthropogenic and biological carbon dioxide (CO2) inputs may lead to more rapid acidification in Chesapeake Bay and other coastal water compared to the open ocean. The results indicate that eutrophication can exacerbate ocean acidification (OA) where animal and plant respiration contributes a far greater acidification in the coastal oceans relative to the open ocean.

The study, led by Dr. Wei-Jun Cai of the University of Delaware, is part of a NCCOS-sponsored project team studying interactions between OA and eutrophication in estuaries. “The study shows for the first time that the oxidation of hydrogen sulfide and ammonia from the bottom waters could be a major contributor to lower pH in coastal oceans and may lead to more rapid acidification in coastal waters compared to the open ocean” says Dr. Cai, in the online University of Delaware’s UDaily. Increased acidification can dissolve the calcium carbonate in the shells of valuable clams, oysters, and certain plankton and lead to poor acid buffering capacity of the water.

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Ocean acidification in the IPCC AR5 WG II

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