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From Wikipedia

Freshwater ecosystem

Freshwater ecosystems are among the earth aquatic ecosystems. They include lakes and ponds, rivers, streams and springs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content. Freshwater habitats can be classified by different factors, including temperature, light penetration, and vegetation.



From Yahoo Answers

Question:I want details about pond ecosystem it may be in text form or power point presentation form or anything else.

Answers:Ponds are nothing more than depressions in the ground where water collects. They are quiet, shallow bodies of water that allow enough sunlight to reach their bottom. The sunlight supports the growth of rooted plants from shore to shore. Some pond plants grow entirely underwater or have parts that extend above the surface. Leafy plants may float on the surface. Other plants can grow along the pond edge. If left alone, ponds will eventually fill in with dirt and debris until they become solid land. It often takes hundreds of years for a pond to be transformed from a body of clear water into soil. Ponds often support a large variety of animal and plant life. Wind and streams can carry in eggs, seeds, and organisms that develop into various life forms. Pond animals include birds, crayfish, fish, frogs, insects, and turtles. Microscopic organisms also thrive in most ponds. Water temperature of ponds is fairly even from top to bottom and changes with the outside air temperature. There is little wave action in the water body, and the pond bottom is usually mud-covered. The amount of dissolved oxygen in the pond may vary greatly during a day. In cold climates, the entire pond can freeze solid.

Question:

Answers:how will u set a pond on fire, well lets assume that for some reason u have gasoline on the surface of the pond, first the fire will kill all plants like algae etc and animals floating on the surface, if that is done u have a reduction in the population of such organisms aand as a result any other organism that feeds on those burnt out surface plants and animals will suffer and their population will reduce too or they might die off, so the chain continues and the ecosystem is now affected. ANother scenerio is that the fire might increase the temp of the pond and affect the dissolved oxygen or CO2 in the water this will also affect the well being of organisms in the pond, in extreme cases their might be no living organism left in the pond after a prolonged fire

Question:

Answers:A pond is a living ecosystem - a balance of fish, plants, and beneficial bacteria that compliment and support each other. When the ecosystem is balanced, a properly designed and built pond will require very little maintenance. A variety of natural, and fish friendly materials are available for those times when an adjustment is needed to keep the ecosystem in balance.

Question:

Answers:http://www.shamrockponds.com/ecosystem.htm http://images.search.yahoo.com/search/images?ei=UTF-8&p=pond%20ecosystem&fr=ieas&fr2=tab-web Hope this helps

From Youtube

Pond aeration systems by Airmax Ecosystems :Learn how a pond aeration system by Airmax Ecosystems can breathe new life into you pond. Proper pond aeration is by far the most important step in creating the perfect ecosystem in any large pond or lake. Maintaining a clean, healthy pond can be simple once you understand its life cycle and learn to work with Mother Nature, not against her. In the next few minutes, you'll learn more about the natural life cycle that occurs in every pond, and how the addition of The Airmax Ecosystem gives you a clear advantage to achieving a cost effective way to keep your pond or lake clean, clear and healthy. The Airmax Ecosystem pond management program, often referred to as the "fountain of Youth" for ponds, is a simple process that works with mother nature to stop many of the common problems associated with a pond. The results are a clean and healthy pond. Even today, many pond owners rely solely on REACTIVE pond management practices to keep their ponds clear of excessive, unwanted, aquatic growth. They typically wait for the problem to appear, then treat it chemically. Although sometimes necessary as a management tool, chemical applications are only a short-term fix and act as a bandage to the real problem. Chemical treatments can only kill aquatic weeds. In turn, the aquatic weeds remain in the pond as decaying organic material which, over time, becomes muck feeding future aquatic weed growth. With the introduction of the Airmax Ecosystem pond management program, pond owners have ...

My Pond - Ecosystem song [Official Music Video]~ by Mister C :Visit www.learningscienceisfun.com. My Pond is featured on Mister C's "Changing the Face of Science" CD and focuses on ecosystems and how organisms interact with one another. Visit www.learningscienceisfun.com to listen to other songs by Mister C. You'll find songs about life science, physical science and earth & space science! Special thanks to DATIMAGES for editing and producing the songs on "Changing the Face of Science"!