Ivory is an off-white color that resembles ivory, the material from which the teeth and tusks of animals (such as, notably, the elephant and the walrus) is made. It has a very slight tint of yellow. The first recorded use of ivory as a color name in English was in 1385.vory is an off-white color that resembles ivory, the material from which the teeth and tusks of animals (such as, notably, the elephant and the walrus) is made. It has a very slight tint of yellow. The first recorded use of ivory as a color name in English was in 1385.
Human activities such as dredging and careless boating are threatening South Floridaâs mangroves and seagrass. Despite the valuable role that mangroves and seagrass play in the Florida Keys ecosystem, these plants are facing one particularly large threat: Us. In the Florida Keys, human development is the greatest threat to mangrove communities. Since the 1950s, more than 60 percent of mangroves in Monroe County have been destroyed for development. Activities such as dredging, using herbicides, and increasing waste water runoff have destroyed thousands of acres of mangrove habitat.
At the intersection of land and sea, mangrove forests support a wealth of life, from starfish to people, and may be more important to the health of the planet than we ever realized. By Kennedy Warne. Photograph by Tim Laman. Mangroves live life on the edge. With one foot on land and one in the sea, these botanical amphibians occupy a zone of desiccating heat, choking mud, and salt levels that would kill an ordinary plant within hours. Yet the forests mangroves form are among the most productive and biologically complex ecosystems on Earth.