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Title |
Response of Arctic and Mediterranean pteropods to ocean acidification. |
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2009 |
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1008 |
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5994 |
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Title |
Response of Mediterranean and Arctic pteropods to ocean acidification |
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Conference - International - Poster |
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2008 |
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he Oceans in a High CO2 World II, Monaco |
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1008 |
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5995 |
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Jinwen Liu, Markus G. Weinbauer, Cornelia Maier, Minhan Dai, Jean-Pierre Gattuso |
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Title |
Effect of ocean acidification on microbial diversity and on microbe-driven biogeochemistry and ecosystem functioning |
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2010 |
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Aquatic Microbial Ecology |
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61 |
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3 |
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291-305 |
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The ocean absorbs about 25% of anthropogenic CO2 emissions, which alters its chemistry. Among the changes of the carbonate system are an increase in the partial pressure of CO2 (pCO2) and a decline of pH; hence, the whole process is often referred to as 'ocean acidification'. Many microbial processes can be affected either directly or indirectly via a cascade of effects through the response of non-microbial groups and/or through changes in seawater chemistry. We briefly review the current understanding of the impact of ocean acidification on microbial diversity and processes, and highlight the gaps that need to be addressed in future research. The focus is on Bacteria, Archaea, viruses and protistan grazers but also includes total primary production of phytoplankton as well as species composition of eukaryotic phytoplankton. Some species and communities exhibit increased primary production at elevated pCO2. In contrast to their heterocystous counterparts, nitrogen fixation by non-heterocystous cyanobacteria is stimulated by elevated pCO2. The experimental data on the response of prokaryotic production to ocean acidification are not consistent. Very few other microbial processes have been investigated at environmentally relevant pH levels. The potential for microbes to adapt to ocean acidification, at either the species level by genetic change or at the community level through the replacement of sensitive species or groups by non- or less sensitive ones, is completely unknown. Consequently, the impact of ocean acidification on keystone species and microbial diversity needs to be elucidated. Most experiments used a short-term perturbation approach by using cultured organisms; few were conducted in mesocosms and none in situ. There is likely a lot to be learned from observations in areas naturally enriched with CO2, such as vents, upwelling and near-shore areas. |
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0948-3055, 1616-1564 |
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6410 |
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A possible teleconnection between East Antarctic sea ice and ENSO during the Holocene. |
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Conference - International - Communication |
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2011 |
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1010 |
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3460 |
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Conference - International - Communication |
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2011 |
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1010 |
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3805 |
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2011 |
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3806 |
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Stenni, B., Crosta, X., Braida, M., Masson-Delmotte, V., Oerter, H., Khun, G., Pol, K., Colizza, E., Delmonte, B. and the HOLOCLIP Group. |
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ISAES 2011, Edinburgh, UK, 10-15 July 2011.
Reconstructing Antarctic Holocene climate/environmental changes from ice and marine cores. |
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Conference - International - Poster |
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2011 |
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1010 |
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3807 |
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ISAES 2011, Edinburgh, UK, 10-15 July 2011. Sea ice variability and teleconnection between ENSO and SAM in north Antarctic Peninsula during the
Historic period |
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2011 |
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1010 |
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3808 |
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Highly Branched Isoprenoids as proxies for variable sea ice conditions in the Southern Ocean |
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2011 |
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3809 |
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2011 |
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3797 |
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