How does carbon dioxide cause ocean acidification Select a lesson
 

Ocean acidification as an environmental issue children
Meaning of ocean acidification
facttors that contribute to ocean acidification
the consequences of the oceans becoming acidic
Solutions to ocean acidificationocean acidification factsheet

Ocean acidification as an environmental issue children
SUGGESTED LESSONS
Genetic engineering
Green energy
crude oil
Effects of overfishing
Water shortage
climate change
DeforestationThe ozone layer
Waste managementWhat is an ecosystemWhat is the earth system
Types and formation of landformsWhat is a cloud

The oceans pH levels



Here are some interesting facts and figures...

How fast is ocean chemistry changing?
Since the Industrial Revolution, the world’s oceans have become 30 percent more acidic, on average. Scientists predict the acidity of our oceans could double or triple by the end of the century compared to preindustrial times.
Natural Resources Defense Council., Gulf of Maine, Ocean Acidification: http://www.nrdc.org/oceans/acidification/files/ocean-acidification-maine.pdf


Source: Ocean Acidification. Summary for Policymakers. UNESCO

Coral Reefs
One of the greatest impacts of Ocean Acidification is on reef building corals, which are known as a ‘framework species’. Without corals, reefs cannot exist. Ocean Acidification is already slowing their growth rates. Left unchecked they will soon stop growing and erode away. The Great Barrier Reef generates over 6.5 billion dollars in tourism revenue and 63,000 jobs. Source: Ocean Acidification – The other CO2 challenge., http://oceanacidification.net/

left aligned imageFinfish
Finshish includes all fish types that we eat outside of shellfish. They include herrings, sardines, anchovies, tuna, cod, flounder and many others. Finfish are very important because apart from their membership in marine food chains for top predators, they are also a source of food for humans and offer many more economic benefits. Ocean acidification will make these vulnerable as their habitats will change. It can also affect their behavior, fitness and larval survival.

Carbon dioxide from fossil fuels
Each year industrial processes and combustion of fossil fuels release over six billion metric tons of carbon into the atmosphere each year.* Two major issues are related to this: Global Warming (because of co2 ’s greenhouse effect) and Ocean Acidification. Together, they form the biggest environmental threat in mordern time.
Source: http://timeforchange.org/ocean-acidification-effect-of-global-warming


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cabon dioxide absorption by the ocean



Reading Sources included the following:
1. Ocean Acidification: Reducing CO2 levels is the only way to minimise risks.,
http://www.unesco.org/new/en/natural-sciences/ioc-oceans/infocus-oceans/features/ocean-acidification-2013/
2. Ocean-Based Food Security Threatened in a High CO2 World., Matthew Huelsenbeck September 2012
http://www.oceanacidification.org.uk/pdf/Ocean-Based_Food_Security_Threatened_in_a_High_CO2.pdf
3. Impacts of Ocean Acidification., http://www.esf.org/fileadmin/Public_documents/Publications/SPB37_OceanAcidification.pdf
4. Ocean acidification., http://www.bristol.ac.uk/alumni/give-back/centenary-campaign/ocean-acidification/
5. Biological carbon pump., http://noc.ac.uk/science-technology/climate-sea-level/carbon-ocean/biological-carbon-pump
6. Ocean Acidification – The other CO2 challenge. http://www.oceanacidification.net/docs/OAA_Factsheet.pdf
7. Ocean acidification - another effect of global warming., http://timeforchange.org/ocean-acidification-effect-of-global-warming
8. What is ocean acidification? http://www.epoca-project.eu/index.php/what-is-ocean-acidification.html
9. Ocean Acidification. Present Conditions and Future Changes in a High-CO2 World., http://www.tos.org/oceanography/archive/22-4_feely.pdf
10. pH -- Water properties., The USGS Water Science School., http://water.usgs.gov/edu/ph.html
11. Ocean Acidification. Summary for Policymakers. Third Symposium on the Ocean in a High-CO2 World http://unesdoc.unesco.org/images/0022/002247/224724E.pdf

12. Ocean acidification: A risky shell game, 6 OCEANUS MAGAZINE Vol. 48, No. 1, 2010 www.whoi.edu/oceanus

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