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Ocean Acidification - the Other Carbon Dioxide Problem

From the Arctic to the tropics, changes life in the sea. By absorbing carbon dioxide (CO2) from the atmosphere, the ocean slows down global climate change. But in seawater, the greenhouse gas causes a chemical reaction with far-reaching consequences: carbonic acid is formed, and the pH drops. any plants and animals that build their shells or skeletons of calcium carbonate are at serious risk, because they need more energy to maintain growth in more acidic water. Also the development of important food fish can be affected. Organisms that convert carbon dioxide into energy by photosynthesis, however, could benefit. In addition, certain species are able to adapt to new conditions in the long run. The roles in the are redefined, while other factors such as rising temperatures, loss of oxygen, eutrophication, pollution or overfishing additionally might further influence the effects of ocean acidification.

 

Reactions of marine organisms to increasing ocean acidification

Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification
Responses of marine organisms to increasing ocean acidification

Marine organisms react very differently to increasing ocean acidification. The figure shows how different species might react to acidification depending on the decrease in pH (left scale) and the increasing CO2 concentration (right scale). The curves show four scenarios for CO2 development during the 21st century. Source: Modified after C. Turley et al. Mar. Pollut. Bull. 60, 787-792 (2010)

 

BIOACID - Exploring Ocean Change

The BIOACID video

Between 2009 and 2017, the German research network inves颅tigated how different marine species respond to ocean acidification, how these reactions impact the food web as well as material cycles and energy turnover in the ocean, and what conse颅quences these changes have for economy and society. More than 250 members of 20 German research institutes, representing a broad range of marine science disciplines, participated in the project coordinated at 黑料视频.

 

Prof. Dr. Ulf Riebesell, marine biologist at and coordinator of the German research network on ocean acidification , has been among the first scientists who investigated the effects of carbon dioxide on marine organisms. In this , Prof. Dr. Ulf Riebesell reports how the , 鈥済iant test tubes鈥�, help researchers to find out more about the reactions of to 鈥� and what these field experiments mean to him.

 

Research News: Ocean Acidification

A transparent plastic tube or bag hangs in the water; above the water, you can see the frame that holds it.
08.09.2025

New Mesocosm Study in Gran Canaria

Researchers Investigate Ocean Alkalinity Enhancement Using Rock Powder and Dissolved Substances

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Sunst over the Mediterranean sea
05.09.2025

What Climate Change Means for the Mediterranean Sea

黑料视频 Study Highlights Urgent Need for Action

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[Translate to English:] Das Forschungsschiff Elisabeth Mann Borgese liegt an einem Anleger. Im Hinergrund die Kieler Schwentine
04.09.2025

Life-Hostile Processes on the Seafloor

Expedition EMB374 investigates oxygen-depleted zones in the southwestern Baltic Sea

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"Exploring Ocean Change - Biological Impacts of Ocean Acidification": The BIOACID brochure summarises important results of the project related to ecosystem services such as the regulation of the Earth鈥檚 climate, food provision, recreation as well as biodiversity as a condition for intact and functioning ecosystems for political decision颅making and the public.
"Ocean Acidification: The Other Carbon Dioxide Problem". In June 2016 the Federal Ministry of Education and Research and the BIOACID project published a joint brochure on ocean acidification.
Ocean Acidification: Eight Experiments for Students and Teachers
Ocean Acidification: Eight Experiments for Students and Teachers: With support from the Seventh Framework Programme of the European Union, the CarboSchools project developed eight experiments for students. The experiments help young people to understand the basics of ocean acidification. In the first half, all eight experiments are explained in great detail. Teachers will find information on the preparation and running of the experiments as well as answers to any questions.

Online Photo Gallery

In an exhibition and online gallery of the BIOACID project, the two nature photographers Solvin Zankl and Nick Cobbing present BIOACID members at their work and introduce organisms that current ocean acidification research focuses on.

In a of the BIOACID project, the two nature photographers and present BIOACID members at their work and introduce organisms that current ocean acidification research focuses on.