1. Frank Kelty


    from Bjørn Added 4 0 0

    Longtime Unalaska resident, natural resource analyst and community leader Frank Kelty shares some of his concerns regarding the growing issue of ocean acidification in Alaska.

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    • Look Closer


      from Bjørn Added 53 0 0

      Take a closer look at the smaller marine critters that are particularly sensitive to ocean acidification.

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      • Dune Lankard


        from Bjørn Added 4 0 0

        Dune Lankard of Cordova, Alaska is a lifelong fisherman. Here, he voices concern for changes in ocean acidity and the impact it could have on vital fisheries and ecosystems.

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        • Angela Doroff


          from Bjørn Added 4 0 0

          Biologist Angela Doroff of Homer, Alaska discusses the concerns for ocean acidification impacts on both marine and human communities.

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          • Kris Holderied


            from Bjørn Added 5 0 0

            Oceanographer Kris Holderied of Homer, Alaska talks about the vital role that ocean chemistry plays in balancing a healthy ecosystem and healthy food web.

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            • Kim Williams


              from Bjørn Added 5 0 0

              Lifelong Dillingham, Alaska resident Kim Williams is the Executive Director of Nunamta Aulukestai (Caretakers of Our Land). Here she shares her concerns for how ocean acidification may impact species throughout the ecosystem and the communities that rely on them.

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              • Volcanic CO2 Seeps in Papua New Guinea


                from Kathleen Morrow Added 19 1 0

                This video documents my adventures with the Australian Institute of Marine Science, University of Queensland, and Smithsonian marine scientists to study coral reefs living in a bubble bath of carbon dioxide. Volcanic activity within the vicinity of some areas of Papua New Guinea causes the release of 99% pure carbon dioxide into the surrounding reef environment, lowering the pH within the seawater, causing "ocean acidification." My goal was to study how coral microbes change in response to ocean acidification. This video documents how coral reef habitats are altered when seawater pH is lowered to the levels predicted for the next century. What we don't see is how coral reefs will change when pH is lowered and temperatures increases... Many predict that the combined effect will change how we see coral reefs forever,

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                • Coral Reefs and Climate Change


                  from R.J. Dunlap Marine Conservation Added

                  Abstract: Global climate change threatens coral growth and reef ecosystem health via ocean warming and ocean acidification (OA). Whereas the negative impacts of these stressors are increasingly well-documented, studies identifying pathways to resilience are still poorly understood. Heterotrophy has been shown to help corals experiencing decreases in growth due to either thermal or OA stress; however, the mechanism by which it mitigates these decreases remains unclear. This study tested the ability of coral heterotrophy to mitigate reductions in growth due to climate change stress in the critically endangered Caribbean coral Acropora cervicornis via changes in feeding rate and lipid content. Corals were either fed or unfed and exposed to elevated temperature (30°C), enriched pCO2 (800 ppm), or both (30°C/800 ppm) as compared to a control (26°C/390 ppm) for 8 weeks. Feeding rate and lipid content both increased in corals experiencing OA vs. present-day conditions, and were significantly correlated. Fed corals were able to maintain ambient growth rates at both elevated temperature and elevated CO2, while unfed corals experienced significant decreases in growth with respect to fed conspecifics. Our results show for the first time that a threatened coral species can buffer OA-reduced calcification by increasing feeding rates and lipid content. Video by: Yiran Zhu Ye Wang Leslie Thompson Christine de Silva Kelly Martin For more information on this research and other related studies, visit www.rsmas.miami.edu and www.RescueAreef.com

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                  • Sour Seas: Understanding Ocean Acidification


                    from UVic Continuing Studies Added 89 0 0

                    An interview with Dwight Owens of Ocean Networks Canada. This session takes place April 7, 2015 at the University of Victoria. For more information, please visit: https://www.uvcs.uvic.ca/Course/Sour-Seas-Understanding-Ocean-Acidification/ASSC237/

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                    • Ocean acidification explained in two minutes


                      from Grist Added 31 1 0

                      The climate is changing, sure, but things are changing underwater, too. A quarter of the greenhouse gases we emit are absorbed by the oceans, changing their fundamental chemistry and causing all sorts of problems for the things that live down there. Which ends up causing problems for the couple billion of us who rely on the oceans for food and livelihood (and the not-to-be-discounted wow-factor — that shit is beautiful). Sources: http://www.un.org/en/sustainablefuture/pdf/Rio+20_FS_Oceans.pdf http://www.pmel.noaa.gov/co2/story/Ocean+Acidification http://pmel.noaa.gov/co2/story/A+primer+on+pH Credits: research + script: Amelia Urry production: Daniel Penner asst. production: Ana Sofia Knauf animation: Amelia Bates music: "New Old Toys" & "Low Jack" by Podington Bear podingtonbear.com – http://creativecommons.org/licenses/by-nc/3.0/ sound effects: "short bubbles" by Robinhood76 freesound.org – http://creativecommons.org/licenses/by-nc/3.0/

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