Marine Biome: The aquatic biome consisting of waters containing 3.5% salt on average; includes the oceans and covers more than 70% of the Earths surface; divided into benthic and pelagic zones.

 

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Marine Biome: The aquatic biome consisting of waters containing 3.5% salt on average; includes the oceans and covers more than 70% of the Earths surface; divided into benthic and pelagic zones.

Freshwater Biome: The aquatic biome consisting of water containing fewer salts than the waters in the marine biome; divided into two zones: running waters (rivers, streams) and standing waters (lakes, ponds).

Submarine Canyon: An underwater canyon, carved into the continental shelf. These can be carved by turbidity currents or carved subaerially during a time when sea level was lower.

National Marine Fisheries Service (NMFS): An agency within the National Oceanic and Atmospheric Administration (NOAA) at the Department of Commerce. NMFS administers programs that support the domestic and international conservation . . . View Full Definition

Merchant Marine Act Of 1920: P.L. 66-261, also known as the Jones Act, provides for the promotion and maintenance of a U.S. merchant marine. Provisions dealing with cabotage (i.e., coastal shipping) require that all goo . . . View Full Definition

Tundra Biome: Extensive treeless plain across northern Europe, Asia, and North American between the taiga to the south and the permanent ice to the north. Much of the soil remains frozen in permafrost, an . . . View Full Definition

Taiga Biome: The region of coniferous forest extending across much of northern Europe, Asia, and North America; characterized by long, cold winters and short, cool summers and by acidic, thin soils.

Temperate Forest Biome: Extends across regions of the northern hemisphere with abundant rainfall and long growing seasons. Deciduous, broad-leaved trees are the dominant plants.

Biome: A large-scale grouping that includes many communities of a similar nature.

Tropical Rain Forest Biome: The most complex and diverse biome; found near the equator in South America and Africa; characterized by thin soils, heavy rainfall, and little fiuctuation in temperature.