One finds very large shallow ponds, with sparkling water, wrapped in an eerie silence. But the importance of these ponds — or bheris as they are called locally — goes beyond their natural beauty. The sewage that is sent to the wetlands is subjected to solar purification, followed by natural oxidation, after which the water is conducive for the growth of algae and plankton, the primary food of fishes. But there are problems galore for the wetlands.
Technical definitions[ edit ] A small artificial garden pond at the Taj Lake Palace in UdaipurIndia The technical distinction between a pond and a lake has not been universally standardized. Accordingly, some organizations and researchers have settled on technical definitions of pond and lake that rely on size alone.
The international Ramsar wetland convention sets the upper limit for pond size as 8 hectares 20 Ponds paper but biologists have not universally adopted this convention. There are numerous examples in other states of bodies of Ponds paper less than 10 acres 4. As the case with Crystal Lake shows, marketing purposes may be the driving factor behind the categorization.
Any depression in the ground which collects and retains a sufficient amount of precipitation can be considered a pond, and such depressions can be formed by a variety of geological and ecological events. Rivers often leave behind ponds in natural floodplains after spring flooding, and these can be very important to breeding fish, particularly in large river systems like the Amazon.
Beaver ponds are the best-known example, but alligators also excavate ponds as well. A defining feature of a pond is the presence of standing water, which provides habitat for wetland plants and animals.
DIY Frog on a Lily Pad Pond Paper Plate Craft. We have been having some fun making crafts with paper plates. Our latest is a Pond Plate. We made one with a lily pad and frog, but this pond plate is versatile. Create the pond then decorate it as you wish with cattails, an . Organic Dyes and Pigments offers Orcobond™ dyes and OrcoSperse™ pigment dispersions for pulp and paper ashio-midori.com approach is based on technical problem-solving to achieve innovative process-specific solutions. When necessary, we develop customized products. Pond's MoistureClean Original Fresh Towelettes gently remove the toughest makeup. These face wipes have soft, plush, and textured clothes for a smooth makeup removing experience.
Familiar examples might include water-lilies, frogs, turtles, and herons. Often, the entire margin of the pond is fringed by wetlandand these wetlands support the aquatic food web, provide shelter for wildlife, and stabilize the shore of the pond.
Some grazing animals like geese and muskrats consume the wetland plants directly as a source of food. In many other cases, however, the pond plants fall into the water and decay. A large number of invertebrates then feed on the decaying plants, and these invertebrates provide food for wetland species including fish, dragonflies, and herons.
The open water may allow algae to grow, and these algae may support yet another food web that includes aquatic insects and minnows. A pond, therefore, may have combinations of three different food webs, one based on larger plants, one based upon decayed plants, and one based upon algae.
Hence, ponds often have a large number of different animal species using the wide array of food sources. They, therefore, provide an important source of biological diversity in landscapes. Vernal ponds are ponds which dry up for part of the year. Naturally occurring vernal ponds do not usually have fish.
They are called vernal ponds because they are typically at their peak depth in the spring the meaning of "vernal" has to do with the spring.
The absence of fish is a very important characteristic since it provides amphibians with breeding locations free from predation by fish. Hence, introducing fish to a pond can have seriously detrimental consequences. In some parts of the world, such as California, the vernal ponds have rare and endangered plant species.
On the coastal plain, they provide habitat for endangered frogs such as the Mississippi Gopher Frog. Drainage of ponds is a frequent problem in agricultural areas, such as in the prairie potholes of North America. Although ponds are a useful source of water for cattle, overgrazing and wading can turn a pond into a muddy hole.
Nutrient sources such as fertilized pastures, human sewage, and even lawn fertilizer can cause explosive growth of algae and the loss of rooted plants and many other aquatic species.
Roads near ponds can kill large numbers of amphibians and turtles that may migrate to and from the pond as part of their annual breeding cycle. Many well-intentioned people introduce fish to ponds, being unaware that some species may eat aquatic plants, stir up sediment, and eat the young of amphibians and many other invertebrate species.
The gentle slope of land into ponds also provides an expanse of habitat for wetland plants and wet meadows. The construction of retaining walls, or lawns, can severely degrade the life in a pond. In landscapes where ponds are artificially constructed, they are done so to provide wildlife viewing opportunities, to treat wastewater, or for aesthetic purposes, such as part of a golf course.
The design of a pond determines how productive it will be for wildlife. In general, gently sloping shorelines with broad expanses of wetland plants not only provide the best conditions for wildlife, but they help protect water quality from sources in the surrounding landscapes.
It is also beneficial to allow water levels to fall each year during drier periods. Roads and houses should be kept as far away as possible.
In origin, a pond is a variant form of the word pound, meaning a confining enclosure. In earlier times, ponds were artificial and utilitarian; as stew pondsmill ponds and so on.
The significance of this feature seems, in some cases, to have been lost when the word was carried abroad with emigrants.
In the United States, natural pools are often called ponds. Ponds for a specific purpose keep the adjective, such as "stock pond", used for watering livestock. Pond usually implies a quite small body of water, generally smaller than one would require a boat to cross. Another definition is that a pond is a body of water where even its deepest areas are reached by sunlight or where a human can walk across the entire body of water without being submerged.Save with this free coupon for $ off one PONDS product.
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