Water Biomes :: Environment Ecology

Water BiomesMarshland is cover with grasses, reeds, sedges, and cattails. Theseplants all have their roots in soil covered or saturated with water and itsleaves held above water.Marshes may be freshwater or table salt. Freshwater marshesdevelop along the shallow edges of lakes and slow-moving rivers, forming whenponds and lakes become make full with sediment. flavour marshes occur on coastal tidalflats. Inland salt marshes occupy the edges of lakes. They affect the supply ofnutrients, the movement of water, and the type and de side of sediment. coarseness marshes atomic number 18 best developed on the Atlantic coasts of North the Statesand Europe. In eastern North America the low marsh is dominate by a singlespecies, salt-marsh cordgrass. The mellowed marsh consists of a short cordgrasscalled hay, spike grass, and glasswort. Glasswort is the dominant plant ofPacific sailplaning salt marshes.Freshwater marshes provide nesting and wintering habitats for waterfowland shorebirds , muskrats, frogs, and many aquatic insects. Salt marshes arewintering grounds for snow geese and ducks, a nesting habitat for herons andrails, and a etymon of nutrients for estuarine waters. Marshes are important inflood control, in sustaining high-water tables, and as settling basins toreduce pollution downstream. Despite their great environmental value, marshesare continually being destroyed by drainage and filling.Marine Life, plants and animals of the sea, from the high- heave trainalong the shore to the depths of the ocean. These organisms fall into threemajor groups the benthos, plants such as kelp and animals such as brittle starsthat live on or front on the bottom the nekton, swimming animals such asfishes and whales that move respectively of water currents and plankton,various small to microscopic organisms that are carried along by the currents.Shore Life, the essentially marine organisms that inhabit the regionbounded on one side by the height of the extreme high tid e and on the other bythe height of the extreme low tide. deep down these boundaries organisms face asevere environment imposed by the break and fall of tides. For up to half of a24-hour period, the environment is marine the live of the time it is exposed,with terrestrial extremes in temperature and the drying effects of wind and sun.Life on rocky shores, best developed on northern coasts, is separatedinto clear-cut zones that reflect the length of time each zone is exposed. At thehighest position on the rocks is the black zone, marked by blue-green algae.This transition flying field between land and the marine environment is flooded onlyduring the high spring. Below the black zone lies the white zone, where