ESTUARIES.

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Presentation transcript:

ESTUARIES

ESTUARIES Where fresh water and salt water mix. BRACKISH WATER – water with some salt, but not as much as the ocean

FEATURES Changes in Salinity (tides) Shallow Water – less than 30 feet Nutrient rich Lots of Life (animals and plants)

TYPES OF ESTUARIES Mangrove Forest Florida and Gulf of Mexico Short gnarled trees

TYPES Salt Marsh East Coast smelly mud – made of sediments, animal and plant matter and nutrients carried by freshwater Cordgrass – common plant

PAMLICO SOUND Very large estuary in NC Known for diversity of species and sea life

BENEFITS OF ESTUARIES Help prevent floods by absorbing runoff Prevent erosion Filter water – oysters are really good at this (25 gallons a day) Provide habitat for baby sea life – nurseries Diversity of life

Protecting Estuaries Everything we put in the water could end up in an estuary TOXINS could build up Agriculture runoff leads to algae blooms Against the law to damage estuaries Not true in the past Some wetlands were filled in for farm land