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Posts tagged "coral death"

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Discussions Discussion Climate Change Effects on the Ocean
Olivia BH-USA, Oct. 7, 2013

I find ocean acidification a particularly terrifying oceanic consequence of climate change due to its impact on coral. When most people think of the effect of excessive anthropogenic carbon emissions, they ignore the oceans and think only of the atmosphere. In reality, these emissions have a huge impact on the oceans because they naturally absorb atmospheric CO2 as a part of the carbon cycle. However, with such high amounts of CO2, their natural CO2 absorption is leading to ocean acidification which is in turn contrinbuting to decimation of coral as the acidic waters threaten to dissolve coral and prevent them from obtaining the necessary minerals for their structure. This scares me because coral reefs are the source of the majority of marine life and harm to them undoubtedly affects the entire marine ecosystem and, consequently, affects us, especially in communities dependent upon coral for income, either in tourism or in fishing. As the National Geographic article from this past Earth Day linked below reports, “A recent model published in Nature Climate Change predicts that 70 percent of corals are expected to undergo long-term degradation by 2030.” The effects of such damage to our coral reefs is unthinkable. The article does offer some hope though in coral conservation efforts targeting specific highly biodiverse yet low stress coral environments that have a chance of being protected and in training of local fishing communities to have habits that encourage coral conservation.

http://newswatch.nationalgeographic.com/2013/04/22/earth-day-opinion-helping-coral-ecosystems-survive-a-changing-climate/
Olivia BH-USA
Comments (1)
  • Anika A-USA Anika A-USA Oct. 11, 2013
    This is a really great post Olivia. I dont think most people realize how important coral reefs are to the overall ecosystem of oceans. I also found an article about carbon absorption by the ocean being a natural part of the carbon cycle, and the article mentioned how the oversaturation of carbon in the environment is leading to a chain reaction of carbon oversaturation in the oceans. Hopefully something can be done about this situation before we lose valuable life forms that depend on coral reefs for survival.
    http://www.sciencedaily.com/releases/2009/02/090216092937.htm

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Discussions Discussion Life on the Reef: Amazing World of Coral Fish…
Jessie Rhodes, Nov. 23, 2011

Corals commit suicide…Australian scientists claim to have unravelled the mystery behind the mass death of corals worldwide as the Earth’s climate warms, upon sea water warming, corals send a signal to their infected cells to commit “suicide”, allowing the safe cells to recover quickly.

Dr.Tracy Ainsworth and a team from the ARC Centre of Excellence for Coral Reef Studies says that coral bleaching, one of the most devastating events affecting coral reefs around the planet, is triggered by rising water temperatures.

http://articles.economictimes.indiatimes.com/2011-11-21/news/30424950_1_corals-symbiotic-algae-acropora

Dr. Ainsworth discusses her reasearch on corals below.

http://www.youtube.com/watch?v=fCC8BNckXug
Jessie Rhodes
Comments (2)
  • clara costa clara costa Nov. 23, 2011
    I watched this video because I am very attracted by the coral reef. This video is about a young woman, who was fascinated with corals and she started doing research on them. She thinks that corals are amazing, she studies the interactions between corals and algae which builds the reef structure. The world climate is changing and it’s very important to understand how this impacts on the corals. There is a large community of bacteria associated with corals but we don’t know exactly what they do for them. This young woman is trying to discover how important this interaction is for coral function. She studies only the corals that live in the shallow waters down to 200 meters. In the next decades corals will face with many threats like pollution and climate change. She is trying to understand better how to preserve the corals from this potentially dangerous future.
    I think that this research is very interesting: it explains one of the risk of the change of the climate because if the world climate is changing, there will be problems for the amazing world of the corals and the coral reef will be transformed or worst it will disappear.
  • Bert Breton Bert Breton Nov. 24, 2011
    Excellent summary and analysis, Clara. From what I understand, the danger to coral reefs around the world is very real. It's important that the destruction of this marine ecosystem becomes part of evryone's daily discourse…so that we can participate in reversing the damage being done.

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