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Pond at Cornjum, Netherlands A man made pond at sunset in Montgomery County, Ohio. Stereoscopic image of a pond in Central City Park, Macon, GA, c. 1877. A pond is a small, still, land-based body of water formed by pooling inside a depression, either naturally or artificially.
Wardley provides a full range of nutritional foods (flakes, pellets, crumbles or sticks) for goldfish, betta fish, tropical fish, pond fish and marine fish. Among their products include test kits, water conditioners and pet remedies. [3] [4] [5]
The pond, mudflats and marsh provide foraging, roosting, and nest sites for numerous bird species, and are used by various mammals, reptiles and amphibians. The thickets support breeding bird species. [4] The Ecology Pond is also used as an emergency water supply source for fighting nearby wildfires.
Algae can take over stagnant ponds, attracting insects and making lakes, rivers, and ponds unpleasant to look at. To treat them, many individuals will choose to stock certain species of fish. This creates a positive externality for those who enjoy a variety of water activities. Studies have also examined the economic viability of fish stocking.
These fish-farming ponds were created as a cooperative project in a rural village in the Congo. These use irrigation ditches or farm ponds to raise fish. The basic requirement is to have a ditch or pond that retains water, possibly with an above-ground irrigation system (many irrigation systems use buried pipes with headers). [31]
Fish ponds are also being promoted in developing countries. They provide a source of food and income from the sale of fish for small farmers and can also supply irrigation needs and water for livestock. [2] The ecosystem and production services offered by carp farming in fish ponds have immense societal and economic advantages.
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Circulators are commonly used to mix a pond or lake and thus reduce thermal stratification. Once circulated water reaches the surface, the air-water interface facilitates the transfer of oxygen to the lake water. Natural resource and environmental managers have long been challenged by problems caused by thermal stratification of lakes.