global warming effects on marine ecosystems part1

global warming effects on marine ecosystems part1

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John Reardon 12at
The consequences of global warming towards the marine
environment and ecosystem is damaging long term.
The marine environment and ecosystem is very diverse this marine diversity depends on
stability on their environment, the marine environment is such a vas place from the fresh
waters of rivers and lakes (river Thames) to which many animal kingdoms rely upon from
molluscs, fish such as trout, perch and pike, to the mammal whom fish the waters for food
including the water vole and to the mysterious and shy otter, to the tropical waters of the
............... with the abundance and diversity of corals, mammals, amphibians, reptiles,
mollusc and crustacean to deep sea secrets all which rely upon the seas. So what would
happen if the temperature would affect the marine environment and ecosystem long term?
Global warming is no longer a myth or controversy. Scientific observation has shown that
the atmosphere close to earth is rising due to human activities. Thanks to the media global
warming has got increasing attention from the general public.
My first section in this report is about the effects on the coral reefs certain themes will have
sub titles e.g. threats
1st coral reefs
2nd the Thames/fresh waters
3rd ocean chemistry
4th conservation
5th conclusion
Coral reefs
Coral reefs are very diverse, there underwater structures, made up of calcium carbonate
skeletons the calcium carbonate is also secreted by the coral polyp. Amongst the coral live
another diverse collection of species. This bio diverse structures provide a cricatal habitat in
which over 400 species of coral live and 4000 species of mollusc and 1500 species of fish,
not only do they provide a habitat but they can bring great tourism for the country that
possess them so its in there interest to maintain them, as well providing a role in coastal
protection and a bank house for genetical material.
Threats
The increase of the temperature of the sea over the last 30 years has lead to serve coral
belching events, coral bleaching is the loss of zooxanthellae through either expulsion or loss
of algal pigmentation the coral depend upon a symbiotic relationship, between zooxanthellae,
that are photosynthetic and live within their tissue. the Zooxanthellae give coral its colour,
Under stress or usability of their environment, corals may release their zooxanthellae, which
leads to a lighter or completely white appearance of their tissue, completing the term
"bleached". This bleaching effect stop the coral species polyp secreting calcium carbonate
ions so has a knock on effect causing other species to degenerate this compromises the
future of the coral reefs and takes .............. to recover from these bleaching events
therefore show that the effect is long term short term
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not only the temperature of the seas will comprise the future for this biodiversity ecosystem

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John Reardon 12at
but changes in tropical storm activity, sea level rise and costal run off which can all reduce
the coral viability
The Thames and fresh waters
The Thames contains both sea water and fresh water, so therefore providing a habitat for
seawater and freshwater fish for example Salmon, which inhabit both environments, the eel
is particularly associated with the River Thames.…read more

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John Reardon 12at
Ocean chemistry
This causes the nutrient based top layer to separate out and to mix with the less dense lower
layers, which causes food supply to be eliminated in turn will mess up marine food webs.
This effect the geophysical distribution of plankton across the ocean therefore effecting the
migration of seabirds and whale and another type of animal that feeds of this source also
there breeding has been unsuccessful.…read more

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