consequences of global warming on ecosystems

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John Reardon Thursday 12th October 2011
Geo.t.
There are many possible consequences of global warming explain the
consequences on one named area.
Marine ecosystems
Global warming is a natural process however, it is being accelerated by human
influence/impact through industry and agriculture as these effect levels of co2 and methane in
the air therefore causing the earth to trap heat, thus increasing atmospheric temperature.
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.
The acidity of the marine environment will increase which may cause, neutral water based
life for example plankton, amoeba to die off. Coral reefs (such as the Great barrier reef)
support most of the marine ecosystem by secreting many forms of nutrients such as calcium
carbonate which there use for there skeleton structure. Co2 trapped effects and thinners
there calcium carbonate ions therefore thinning the overall skeleton structure of the coral. So
they may die off.
Photosynthesis will be effected, single celled plants organism, photosynthesise producing
organic carbon dioxide and oxygen, which in turn feeds most ecosystems on the planet.
Marine life may not get Crucial nutrients and gases such as oxygen and carbon dioxide as
they are blocked from moving upward with the ever expansion of algae that will thrive in
cooler oceans/seas such as the north Atlantic.
Giant glaciers in the artic circle will melt, by the ever rising temperature of the atmosphere,
this will cause mass volumes of water to form glacier lakes, and stream which eventually
ends in the oceans and sea thus rising sea level, which causes increased pressured regions
which mean the diverse ecosystems of the coral reefs will be destroyed/damaged, also water
expands when heated so more increase in sea level rise, which may cause salt marshes to
disappear

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