Pomelo is very large citrus fruit of botanical name Citrus maxima. It is very sweet taste after ripening . Have you ever tried a honey pomelo ? This large citrus fruit can be found in the produce section from late fall to early spring. Here's more about this tasty unique citrus fruit.The fruit is used in many festive celebrations throughout Southeast Asia. After a Captain Shaddock of an East India Company ship introduced it to Barbados, the fruit was called "shaddock" in English. The fruit is also known as jabong in Hawaii and jambola in varieties of English spoken in South Asia. The etymology of the word "pomelo" is uncertain. It may be an alteration of "pompelmoes", in Tamil pomelo are called pampa limasu, which means "big citrus". The name was adopted by the Portuguese as pomposos limoes and then by the Dutch as pompelmoes. Typically, the fruit is pale green to yellow when ripe, with sweet white ( or, more rarely , pink or red) fle...
Technical Definitions
The technical distinction between a pond and a lake has not been universally standardized. Limnologists and freshwater biologists have proposed formal definitions for pond, in part to include bodies of water where light penetrates to the bottom of the waterbody, bodies of water shallow enough for rooted water plants to grow throughout and bodies of water which lack wave action on the shoreline. Each of these definitions has met with resistance or disapproval, as the defining characteristics are each difficult to measure or verify.
Ponds can result from a wide range of natural processes. Any depression in the ground that collects and retains a sufficient amount of rainfall can be considered a pond, and such sediments can be formed by various geological and ecological phenomena. Rivers often leave ponds in natural floodplains after spring floods, and these can be very important for fish breeding, especially in large river systems such as the Amazon. The retreating glaciers can leave landscapes filled with small sediments, each of which can develop its own pond; An example is the prairie pothole region of North America. Small depressions occur in many areas of the landscape that form temporary ponds after spring snow melts or during the rainy season; These are called verbal ponds, and can be important sites for amphibian breeding. Some ponds are made by animals. Beaver ponds are the best-known examples, but crocodiles also excavate the ponds. In landscapes with organic soils, fire can also cause depression during periods of drought; They become open water when normal water levels return.
Features
During the last thirty years of his life, the main focus of Claude Monet's artistic production was a series of about 250 oil paintings depicting the lily pond in his flower garden.
A defining feature of a pond is the presence of standing water, [citation needed] which provides habitat for wetland plants and animals. Familiar examples may include water lilies, frogs, turtles and herons. Often, the entire part of the pond is filled with wetland, and these support the wetland aquatic food web, providing shelter for wildlife and stabilizing the edge of the pond. Some grazing animals such as geese and oysters consume wetland plants directly as a source of food. However, in many other cases, pond plants fall into water and rot. Many invertebrates then feed on rotting plants, and they provide food for wetland species including invertebrates, dragonflies, and herons. Open water can allow algae to develop, and these algae can support another food web that includes aquatic insects and minnows. A pond may, therefore, be a combination of three different edible webs, one based on large plants, one based on decaying plants, and one based on algae. Therefore, ponds often contain many different animal species using a wide array of food sources. Therefore, they provide an important source of biological diversity in the landscape.
Vernal ponds are ponds that dry up for parts of the year. Naturally occurring varna ponds usually do not contain fish. They are called Vernal ponds because they are usually at their peak depth in spring (what "Vernal" means to do with spring). The absence of fish is a very important feature because it provides amphibians with breeding places free from predation by fish. Therefore, introducing the fish into the pond can have serious detrimental consequences. In some parts of the world, such as California, porch ponds are rare and endangered plant species. On the coastal plain, they provide habitat for endangered frogs such as the Mississippi gopher frog.
Conservation and management
Ponds, being small, are easily disrupted by human activity, such as hikers. Drainage of ponds is a frequent problem in agricultural areas, such as in prairie pits in North America. Although ponds are a useful source of water for cattle, overgrazing and wading can turn the pond into mud. Nutrient sources such as fertilized pastures, human feces and even lawn fertilizer can lead to explosive growth of algae and loss of rooted plants and many other aquatic species. Roads near ponds can kill large numbers of amphibians and turtles that can migrate to and from the pond as part of their annual reproductive cycle. Many well-intentioned people introduce fishes in ponds, unaware that some species may eat aquatic plants, shake off sediment, and eat young of amphibians and many other invertebrate species. The gentle slope of the land in the ponds also provides an extension of habitat for wetland plants and wet grasslands. The construction of retaining walls, or lawns, can severely impair life in the pond.
In scenarios where ponds are artificially constructed, they are used to provide opportunities for wildlife viewing, treatment of wastewater, or for aesthetic purposes, such as being part of a golf course. The design of a pond determines how productive it will be for wildlife. In general, the gently sloping shorelines with extensive expanses of wetland plants not only provide the best conditions for wildlife, but they help conserve water quality from sources in the surrounding landscape. It is also beneficial to let the water level fall every year during dry periods. Roads and houses should be kept as far away as possible
Comments
Post a Comment