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Coral Reefs in the Microbial Seas

MBIO100 Independent Study Topic
By

Scott Poulton- 10502561

Summary
The research carried out by Forest Rohwer (San Diego
State Microbial Ecologist) into coral reefs in microbial
seas is very interesting
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Through metagenomics
and research expeditions to the Line islands, he has
found that the decline of coral reefs is primarily due to
human activities such as overfishing
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It also explains
methods by which we can sustain healthy coral reefs
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youtube
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This mucus is then brushed off by the coral using its cilia
in the same way the human lungs clear themselves
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2- The bacteria are there to eat and breakdown the mucus the corals are producing
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There are some cyanobacteria which are able to fix nitrogen to make ammonia, which is then
denitrified by archaea into nitrate and nitrite and fungi then convert this back into ammonia
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3- Where corals are dying it has been found out that humans are having a huge impact into the cause of death
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The fish are what control the outburst of algae growth on corals by grazing on the algae
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These bacteria living on the
corals are heterotrophs that use organic carbon for growth leading to an increase in the number of bacteria living on the corals
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4- Acropora roseria, Tridacna maxima, Diplosoma simile & Spondilus varians are found on the ribbon reefs of the millennium lagoon and these macrobes are filter
feeders which filter out the bacteria and viruses from the water to feed on them which aids coral survival
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I found this
because it is he who gathered the research into how and why corals are declining and what roles microbes, humans, algae and environmental
stressors are playing in their decline
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I think i have been quite successful as the information i have gathered has set in and is very unlikely to be forgoten, mainly due to the
fact i watched the video over and over again in order to understand what was actually happening in order for the coral reefs to decline and what can
be done to preserve them
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I also think that the video was
the most reliable source as it is he who is giving a lecture on his own research and it has not been altered by anyone or is not a video of someone else
giving insight into Forest Rohwers work
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He did 40 treatments with 10 replicates each and gave the corals a 20% water change per minute
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g
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The study topic of coral reefs in the microbial seas gives us an
insight into the way coral reefs are declining and what role microbes have in the matter
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The roles of the microbes on coral reefs is explained by the recent development of new research methods such as metagenomics
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He does this by explaining how we as humans turning key microbial associates of healthy reefs into microbes which have
resulted in the death of corals
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