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Compare and Contrast the Estuaries to Barrier Islands

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Compare and Contrast the Estuaries to Barrier Islands

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(Location, characteristics, plants, animals, etc.)

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When sandbars (or barrier islands) build up by ocean waves cause restricted-mouth estuaries.

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When sandbars (or barrier islands) build up by ocean waves cause restricted-mouth estuaries.

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Compare: Barrier Islands are heavily influenced by natural disasters and and weather changes, and Estuaries are also heavily affected by weather.
Contrast: Barrier islands only have saltwater, as they are the barrier to the ocean, while estuaries have freshwater and saltwater mixed together. Barrier islands are protecting the estuaries, while estuaries do not protect the barrier islands.

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Barrier islands are low, narrow, sandy islands that form offshore from a coastline.
Parallel to the shore.
Located along some coasts such as most of North America's Atlantic and Gulf Coasts.
Protect the mainland, estuaries, and coastal wetlands from storm waves.
Have natural sand dunes held in place by grasses to form the barrier.
Animals that live there include: Blue crabs, sandpipers, ghost shrimps, mole shrimps, silversides, and more.
Plants that live there include: American beachgrass, panic grass, poison ivy, and more.
An example of a barrier island is Key Biscayne in Florida.

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Summary

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Physical Geology - Barrier Islands - Introduction

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-Transition from land to sea/coastal
-Fresh water streams mix in to salt water from the ocean
Popular Locations
-Rio de la Plata
-San Francisco Bay
Characteristics
-Concentration of dissolved oxygen, salinity, and sediment load
-Vital feeding and nesting area
Plants
-Salt marsh
-Seagrass
-Rushlands
Animals
-Racoons
-Reptiles
-Turtles
-Crabs
-Lobsters
-Clams
-Birds
-Fish

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As seen on Full House

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Video

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Estuaries: Where the River Meets the Sea

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"Estuaries are partially enclosed areas of coastal water where seawater mixed with freshwater and nutrients from rivers,streams, and runoff from land."  pg.131
"The constant water movement in estuaries and their associated coastal wetlands stirs up the nutrient rich silt, making it available to producers....We are degrading or destroying some of the ecological services that these important ecosystems provide at no cost."  pg.133
"Narrow islands off some shores help protect coastal zones from storm waves, but developing these islands reduces this natural protection and makes them risky places to live."   pg.133
"Their low-lying beaches are constantly shifting, with gentle waves building them up and storms flattening and eroding them. Currents running parallel to the beaches constantly take sand from one area and deposit it in another." pg.133