Tuesday, June 1, 2010
Above image taken from One of the unknow wetland of my Native place, Naitahi. Northan Pin tail ducks, one of the beautiful specis of Wetland. I used my old boy gear Minolta Z20 30-290mm inbuilt lens.
Some Gyan about Wetland.
Type of Wetland:
The term ‘Wetlands’ is broadly used to refer to swamps, marshes, bogs, prairie potholes, flood plains, and fen. These are lands which due to geological or ecological factors, have a natural supply of water—either from tidal flows, flooding rivers, connections with groundwater, or because they lie above aquifers or potholes.
Marshes: A freshwater marsh is an inland area inundated with anywhere between 1- 6 feet of water, containing a variety of grasses, flowers and bushes, rather than trees, unlike as in swamps.
They have an interesting mix of plant and animal life and are home to yellow-headed and red-winged blackbirds, herons, egrets, rails, bitterns, moorhens, ducks and geese.
Marshes also host frogs, turtles, snakes, salamanders, a diverse variety of insects, including aquatic, flying, and grazing insects.
Marshes that occur along rivers are called riparian marshes. These marshes serve two ecological roles: to absorb excess water when river levels are high and to release water when the river levels are low. These balancing forces help prevent floods and droughts.
Above image taken from Buxa Tiger reserve, near to Bala River. I thing this image can be good example of swamps.
Swamps: Swamps are slow moving streams, rivers or isolated depressions that host trees and some shrubs. A bog is a peat-accumulating wetland. Some shrubs and evergreens grow in bogs, as does moss. Most water comes from precipitation. There is usually no direct inflow or outflow of water.
Above image taken from Bhimeswari Fishing Camp, Karnataka. Good example of Prairie Pothols
Prairie potholes: Prairie potholes are shallow or bowl-like depressions have variable wetness. They are often used as breeding grounds by birds. They are not wet year-round.