plants to obtain needed nutrients. The Australian pine also has a comparative advantage over native species: the Australian pine can quickly "invade newly accreted beaches, beaches where dredge spoil has been deposited, and beaches where a storm has destroyed existing vegetation." The Australian pine displaces native flora of the Florida keys, and displaces native fauna by providing no native wildlife habitat. Brazilian pepper The Brazilian pepper tree is native to Argentina, Paraguay, and Brazil, but was brought to Florida in the mid-1800s as an ornamental plant. The introduction of the Brazilian pepper has disturbed the biodiversity of the Florida ecosystem, as one of the most widespread of the invasive non-indigenous pest plants in Florida. The Brazilian pepper tree has invaded over 700,000 acres in Florida. The tree produces a dense canopy that shades out all other plants and provides a very poor habitat for growth to native species. "The Brazilian pepper invades aquatic as well as terrestrial habitats, reducing the quality of native biotic communities." Reefs Notable reefs in the sanctuary include the following: Sand Key Rock Key Eastern Dry Rocks Western Sambo Eastern Sambo 9-foot Stake Marker 32 Looe Key Newfound Harbor Key Sombrero Key Coffins Patch Tennessee Reef Alligator Reef Cheeca Rocks Hen and Chickens Davis Reef Conch Reef Snapper Ledge Pickles Reef Molasses Reef French Reef Crocker Reef Grecian Rocks Dry Rocks The Elbow Carysfort Reef Turtle Reef Pacific Reef Ajax Reef Notes External links Florida Keys National Marine Sanctuary Florida Keys Protected areas of Monroe County, Florida National Marine Sanctuaries of the United States Protected areas of Florida 1990 establishments in Florida Protected areas established in 1990