Ecological responses to sediment, nutrients and pesticides in the inshore marine environment

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•nutrient related phytoplankton blooms may promote juvenile crown of thorn starfish, resu lting adult population outbreaks can rapidly reduce coral cbver

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• turbid waters reduce light for phofosynthe~is • sediment can smother seagrass I

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I • herbicidei; can inhibit photosynthesis • fungicides and insecticides can impact coral early life-history stages

• sediment can smother and kill some corals

J.Prange, GBRMPA I

• disturbance events such as cyclones and bleaching can rapidly reduce coral cover, good water quality is imporant for reef resilence

• nutrie[l ts and particulate organic matter 1 may result in a dominance of macroalgae 1 over coral

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