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50 % of coral could be
gone from the barrier reef by 2050 - while that can't be blamed on any one
factor, one of the growing factors is the deposition of sediment from the agricultural
land. Not only is the tonnage increasing, but the increased nutrient loads, and
the interaction between the two. When
the two are combined, it produces marine snow, a highly enriched precipitate of
sediment and nutrients, held together by bacterial slime. There
are still increasing areas being cleared for agriculture, and the nutrient loads
are still increasing per unit areas - so there is a need to change the land use
practices if we are to stop the predication from coming true. This
needs to be a long term commitment, and the whole story is covered in the SBS
documentary to be broadcast on Tuesday May 20th at 8pm. Radio
Marinara does not endorse Anth's comments on taping "The Bill" that
may be on the ABC at the same time - because we can spell copyright. |