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   » » Wiki: Garden Pond
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A garden pond is a constructed in a or designed , normally for purposes, to provide , or for swimming.


Habitat
Garden ponds can be excellent wildlife habitats and may contribute to the protection of freshwater wildlife. animals (such as and ) and such as ( and ), and can colonize new ponds quickly.Rewa, Charles. (2007). Fish and Wildlife Benefits Associated with Wetland Establishment Practices. are also frequently in larger ponds to provide aesthetics and control, as well as against infestation.

Garden pond owners have the potential to make many original and valuable observations about the ecology of small waterbodies, which garden ponds replicate.


Problems
There are several problems that can result from garden ponds. In particular, they can be pathways for the spread of plants. In the UK, the invasive species and Myriophyllum aquaticum have both escaped from garden ponds. These plants cause considerable practical problems in protecting freshwater.

species such as , , and are common in garden ponds, especially in overgrown areas with and reeds. Without proper precautions being taken by pond owners, such areas can harbour excessive and may pose a challenge.

Cases of high rodent activity are also common in garden ponds, with field mice, , and taking refuge in freshwater areas such as garden ponds. Consuming pondwater contaminated with rat can cause infections such as Weil's disease or .

In tropical climates, garden ponds may become breeding sites for and increase the spread of diseases carried by these insects.


Conditions
Ponds may be created by natural processes or by people; however, the origin of the hole in the ground makes little difference to the kind of wildlife that will be found in the pond. Much more important is whether the pond is or clean, how close it is to other wetlands and its , particularly whether it dries out from time to time and how many fish (if any) there are.

Naturally, ponds vary more in their physical and chemical conditions from day to day than other freshwater, like rivers. People often install pumps in garden ponds to counter these natural tendencies, particularly to maintain higher levels of dissolved oxygen. Although this is generally unnecessary for wildlife, it may be essential to keep fish in a garden pond. For ponds with polluted nutrient-rich added to them, filters can be used to reduce the abundance of .


Water supply and loss
Ponds outside of gardens are fed by four main water sources: , inflows (springs and streams), , and . The wildlife value of ponds is greatly affected by the extent to which these water sources are unpolluted. Garden ponds are generally not fed by inflows or groundwater, except in the larger and rural gardens. Usually, the pond will be filled by a combination of tap water, rainwater, and surface runoff – and lost to .

In soils that lack natural , additional water loss to and is prevented by a liner. are or foils that are placed between the soil of the pond bed and the water. Liners can also be made from puddled clay, and ponds on free-draining soils can even be self-sealing with fine sediments washed into the pond.


Seasonal ponds
Ponds tend to dry out if excessive water is lost to evaporation. Evaporation is more common in the summer season, when increases in temperature and lack of rainfall contribute to dry conditions, creating seasonal ponds (or ) that usually dry out once a year. These seasonal ponds provide specialized habitat for many plant and animal species, particularly amphibians and invertebrates. Oftentimes, seasonal ponds are utilized as a breeding ground, allowing amphibian (such as and ) and invertebrate (such as ) space to develop without aquatic predators like fish.


Swimming ponds, natural pools or natural ponds
Swimming ponds can be constructed by an isolating membrane or membranes or (on an model sometimes called natural swimming pools) contained by a layer of . For all variants, no chemicals or devices disinfect or maintain water; the water is instead cleared through the use of biological filters, , or other organisms used in water purification ().

The first such pools were built in the early 1980s in , where they are known as "Schwimmteiche". The first was built by Werner Gamerith and Richard WeixlerRichard Weixler: Garten- und Schwimmteiche: Bau - Bepflanzung - Pflege; Stocker Verlag, Graz, 2008 (german language) in Gamerith's private garden in the 1980s.

(2025). 9780764350832, Schiffer.
The market slowly grew, and by 2016 there were around 20,000 such swimming ponds in Europe.

The first public swimming pool in North America built and maintained in this way was finished at Webber Park in in 2015.

An organization called the International Organization for Natural Bathing Waters (IOB) sets the guidelines for such pools.


See also


Further reading

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