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Coral reef climate change
The importance of coral reefs and the consequences of their possible extinction
The importance of coral reefs and the consequences of their possible extinction
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Recommended: Coral reef climate change
Annotated Bibliography Research Question: What is causing coral reefs around the world to bleach? Can we do anything about it?
Baker, Andrew c. “Climate change and coral reef bleaching: An ecological assessment of long-Term impacts, recovery trends and future outlook.” Estuarine, Coastal and Shelf Science, Academic Press, 17 Sept. 2008, www.sciencedirect.com/science/article/pii/S0272771408003405.
This website gives a large historical overlook and possible conclusion to the issue of coral reef bleaching. Since the 1980’s episodes of coral reef bleaching and death have occurred almost every year in one or more of the world's tropical or subtropical seas. Bleaching happens in episodes, with the most severe typically accompanying coupled ocean–atmosphere phenomena. Bleaching episodes have resulted in loss of coral
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“Losing Our Coral Reefs.” State of the Planet Losing Our Coral Reefs Comments, Earth Istitute, 13 June 2011, blogs.ei.columbia.edu/2011/06/13/losing-our-coral-reefs/ This article discusses how important the organisms symbiotic with coral reefs are, as well as how important coral reefs are to our environment. Also explained is how natural and non natural things things like hurricanes and overfishing affects them. A study is quoted about how water acidity also plays a role in the bleaching of corals. Lastly, restoration and conservation efforts are discussed and how we could possibly help our oceans.
“Climate Science Glossary.” Skeptical Science, www.skepticalscience.com/argument.php.
This is a website where the current counter- claims and misinformation regarding the existence of coral bleaching effects is paired with scholarly evidence refuting and disproving these claims. Things like “the ocean isn’t actually getting hotter”, “the climate change is natural and happens on a cycle”, and “plants and animals can adapt to shifting temperatures”. These are all linked to research that shows why those claims are
A. Global Warming kills Great Barrier Reef coral. http://www.usyd.edu.au/su/exterel/news/981008News/8.10.coral.html. Coral bleaching http://www.uvi.edu/coral.reefer/bleach.htm Coral Reef http://encarta.msn.com/find/Concise.asp?z=1&pg=2&ti=050FE000 Coral reefs in peril worldwide. http://usatoday.com/life/science/environ/lse011.htm Coral'stress' worsening, expert says.
Coral Reefs are said to be the “tropical rainforest” of the sea. They are home to over 25% of all marine life (http://coralreefalliance.org.stories/storyReader$77). Over the past few decades they have been subjected to destructive anthropogenic practices. Some of the major threats to coral reefs include sedimentation, water pollution, harmful recreational activities, and global warming. All of these things cause stress on corals and can potentially cause mortality. Corals are made up of two parts, a polyp and zooxanthellae. A polyp is a calcerous body that grows from a hard part of the ocean floor. Zooxanthellae is a photosynthetic algae which lives in the polyp and provide energy for themselves and the coral. In many cases, corals undergo “bleaching,” which is a process where corals lose the zooxantheallae or chlorophyll pigment, and turn white (Wilkinson et all). After bleaching corals can survive for several months. It is possible for corals to recover by hosting more zooxantheallae, but it can take between 5 and 50 years for them to recover completely (Wilkinson et all, 1999).
The world is changing. The environment is yelling at us, but is society ready to listen? Climate scientists, outdoor enthusiasts, environmentalists, and politicians all have an opinion on the state of the world’s climate. There is an argument from each side, agreeing or disagreeing with the claims of scientists who are trying to show the world what is happening. The fact is that humans are changing the climate, and it is not for the better. Glaciers are melting, the polar caps are shrinking and the ocean is becoming acidic. According to a report in Ocean News and Technology “Researchers have found that increasing ocean temperatures due to climate change will soon see reefs shrinking” (Ocean News and Technology). The Great Barrier Reef off the
Coral bleaching occurs when there is a loss of zooxanthellae from their coral host. This is accompanied by loss of a coral's normal color that may or may not be detectable to the human eye. Bleaching can lead to coral death when prolonged, although links between bleaching and subsequent coral recovery or death are not well known. Causes of bleaching have been observed to include salinity, exposure to air, and sedimentation. The primary reasons cited to cause most instances of coral bleaching are increased sea temperatures and solar radiation. These two factors have been observed to cause the most damage in combination (Fitt et al. 2001, 51).
Coral bleaching is when the tiny algae that lives in the coral which causes it to be bright and colourful, gets so stressed out when the water temperature exceeds the limit that it can handle, which then makes the algae
Leading scientists advise climate change will cause increases to the frequency and intensity of extreme weather events. Rising sea levels pose a significant risk to coastal communities, while the world’s oceans could become too acidic to support coral reefs and other calcifying marine organisms. Coral reefs contain only six per cent of the area of the Great Barrier Reef, yet they provide critical habitat and food for numerous species in the ecosystem. However, climate change has already impacted coral reefs in the Great Barrier Reef as corals are very helpless against its potential impacts. Eight mass coral bleaching events has occurred since 1979, triggered by unusually high water temperatures. And because of this, zooxanthellae (photosynthetic algae) leave their tissues and corals will have no more colours hence ‘bleaching’. Without the zooxanthellae, the corals that remain gradually starve to death. Once the coral dies, fish and a multitude of other marine species are soon affected. Rising sea levels and more frequent and intense storm surges will see more erosion of Australia’s coastline, causing community and residential
Imagine a lush underwater place. Beautiful structures colorful animals and places that would never have been thought of before. In reality that's not what it really looks like, really the ocean is a desolate place that is barren like a desert. Many marine species have been lost by as much as 49%.(seeker) A big part of that reason is because of coral bleaching which causes as stated above a decline in species that depend on the coral as there home. Coral bleaching is a serious problem that could cause problems for everyone if we don’t fix it.
Imagine living in paradise where the sky is blue, the ocean is a beautiful light blue color and the coral reef is filled with magnificent colors and it is healthy as can be. That's how the coral used to be but because of us humans now, the coral is bleached and it is close to dying. Coral reefs play a very important role in the marine life community. If the coral reefs die, then that mess with the food chain for everyone. This research paper will be talking about the background on coral bleaching, the effects of coral bleaching, and solutions for coral bleaching.
After this event, researchers Jahson Berhane Alemu I and Ysharda Clement were curious to find out what corals could survive and which ones could not. They set out to analyze the effects of mass coral bleaching on four main reef building taxa at three popular reefs in Tobago, West Indies. Basically they were trying to find out which corals were able to withstand bleaching.
The importance of coral reefs to the ecosystem can not be overstated. Coral reefs are a
Rates of coral calcification on the Great Barrier Reef and many other reef systems around the world have declined by 15-20% since 1990 due to increasing thermal stress (De’ath 2012). It has already been mentioned that the oceans absorb almost all of the excess heat from climate change. This affects coral reef systems in what is known as coral bleaching. The term bleaching refers to the loss of corals’ colors. A coral’s color is the result of the zooxanthellae present.
Obituary: The Great Barrier Reef (25 million B.C. - 2016). The Great Barrier Reef past away after a long illness. It was 25 million years old. I was shocked to read this as I scrolled through Facebook on my phone. Im sure that many of us in this room saw the same link, but what does this really mean for us? How does a coral reef dying 9,000 miles away affect you? Is it truly too late to save the Great Barrier Reef and other coral reefs alike? Coral reefs need our help to reverse the ill effects we have imposed on them.
Climate change has been affecting coral reefs in a negative way. If the climate continues to get warmer more of our coral reef become bleached, the structure of the reefs will become weak, and algae that keeps coral healthy will die. In the essay, “A framework for understanding Climate change impacts on Coral Reefs” by Joshua Clinner (2016), he emphasizes our climate change has become one of the long-term threats to coral reef. The article “Climate change and human impacts are damaging the world’s coral reefs”, which didn’t include an author (2001), states that the sea temperatures throughout the tropics has increased dramatically leaving much of the coral unhealthy. Spencer Hall (2008), discussed in his article “Coral Reefs and Climate Change”, how the increase in climate change puts a lot of stress on coral reefs because they are very sensitive to the change of temperature. Rigel B (2003) states in his essay, “Climate Change and Coral Reefs”, that coral reef has already been negatively impacted by
Many theories have been proposed as to what causes coral bleaching and how serious the threat is to coral ecosystems. While literature holds many theories on coral bleaching, the continuing theme for this review is to what extent is coral bleaching a threat to coral reefs around the world and what is the main cause of coral bleaching. This review will explore the coral and algae symbiont relationship, its role in coral bleaching as well as reviewing past bleaching events and exploring potential adaptation solutions. The literature around these topics will be critically reviewed and analysed. Coral is home to many marine tropical and subtropical species, which rely heavily on the resources provided by the reefs - over 4000 species of molluscs
In conclusion, I would like to say that before writing this paper, I had no idea how important coral reefs were to the earth. I have learned a lot and I think that if more people were informed about the positive capabilities of them, humans wouldn't be so careless about them.