development

Environmental problems of the White sea

White sea belongs to the basin of the Arctic ocean and represents a huge reservoir polutoratonny. Seas of this type are relatively few. Similar characteristics possess Black sea, the Mediterranean, the Baltic and Hudson Bay. White sea is the smallest of them. It is divided into two unequal parts – the Northern (outer) and southern (inner). They are joined by a relatively narrow Strait, also called the throat.

In modern times, few bodies of water that don’t pollute and the White sea is no exception. Anthropogenic pollution of the White sea began immediately after the occurrence on its shores of a man and eventually became so significant that the consequences can be observed today.

In a relatively short era of navigation, some areas of the bottom, especially in small lips, where it is convenient to stand during the storm, were so covered with coal slag, which still have not recovered destroyed the bottom biocenoses. These environmental problems of the White sea cannot be considered modern, though harm from them not less.

The woodworking industry has no less impact on the ecology of the White sea. Wastes at sawmill one keretsky industrialist, was filled in the Strait between the two Islands on which it is located.The forest industry is one of the key environmental problems of the White sea. Continue reading

The pond with their own hands for cultivation of fish with an artificial bottom

The pond on the site can be a favorite vacation spot. Pond fish is a complex hydraulic structure. What is difficult in General, consists of a number of simple rules. If you apply patience and diligence to make a pond with their own hands for cultivation of fish can any householder on their needs and your taste.

Why you need a pond

The pond is always a decoration of the site, on its edges, you can plant the plants. His presence on site creates a special microclimate.

The opportunity to grow organic fish. In our time – is not unimportant!

Get pleasure from fishing. If there are no natural water bodies, to create conditions useful for the health of the hobby. This can be a family holiday or with friends.

The choice of location

The reservoir should be placed taking into account that till 11 am, he should be well publicized. In the daytime, to 15 hours for pond fits the shade or shade. In warm water are good conditions for development of algae, reducing oxygen for fish.

Deciduous trees should be at some distance from the pond so that the leaves did not litter the pond. The leaves of some trees have harmful effects on fish, it is also possible to transfer aphids on aquatic plants. Continue reading

Garden ponds

Garden pond — one of the most common forms of artificial pond used in the landscape design suburban area. Often the pond is one of the most important elements of the garden, giving the General appearance of the site the completeness or being the center of the composition. A garden pond often ends in a stream, sometimes in the pond to include a fountain or waterfall.

To build a garden pond in a suburban area, you don’t have to dig. Modern construction technology has advanced greatly, so today there are many ways to build a garden pond at his dacha. The method of construction of the reservoir strongly depends on its purpose. Usually garden ponds can be used as a basin near the place of rest, a habitat for various aquatic animals, primarily fish, the pond can be a place of planting ornamental aquatic plants, pond fountain, or an inanimate surface water, which serves to rest the eyes, etc. Some of these types of ponds can be joined together, for example, a place for bathing and still water surface, but some can be implemented only separately. In any case, depending on the purpose of the reservoir that you want to create, everyone can choose for themselves the best method of construction, which is suitable from a financial perspective.

The most obvious way device shadowood is to dig him up. But this method is not always rational, since such ponds have significant drawbacks, the main of which are high cost due to large volume of dredging, the long development of the flora and fauna of the pond because the bottom of the pond are subsurface layers.

Another one of the pretty old and complicated methods of construction of artificial lake — the creation of a concrete bowl. These garden ponds are expensive and will serve for a very long time, but then they are difficult to dismantle or change their shape. Continue reading

The problem of reducing the area of Maritime forests of the Mediterranean
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