freshwater ecosystem
121List of watershed topics — This list is incomplete; you can help by expanding it. See also: Drainage system (geomorphology) This list embraces topographical watersheds and drainage basins and other topics focused on them. Contents 1 Terms different uses …
122Deep water coral — Table coral, which can live in deep water (in this picture, it is in shallow, warm water) The habitat of deep water corals, also known as cold water corals, extends to deeper, darker parts of the oceans than tropical corals, ranging from near the …
123Deep sea creature — A. cornuta The term deep sea creature refers to organisms that live below the photic zone of the ocean. These creatures must survive in extremely harsh conditions, such as hundreds of atmospheres of pressure, small amounts of oxygen, very little… …
124Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …
125Wetland classification — Classification of wetlands has been a problematical task, with the commonly accepted definition of what constitutes a wetland being among the major difficulties. A number of national wetland classifications exit. In 1970s, the Ramsar Convention… …
126Coastal biogeomorphology — Over the past two decades, biogeomorphology has developed as an established research field examining the interrelationship between organisms and geomorphic processes in a variety of environments, both marine, and terrestrial (Naylor, Larissa A.… …
127Seashore wildlife — Habitats exist from the Tropics to the Arctic and Antarctic. Seashores and Beaches provide varied habitats in different parts of the world and even on the same same beach. Phytoplankton is at the bottom of some Food chains while zooplankton and… …
128Deep sea communities — giant tubeworm Deep sea communities currently remain largely unexplored, due the technological and logististical challenges and expense involved in visiting these remote biomes. Because of the unique challenges (particularly the high barometric… …
