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
Meat of marine fish has a specific scent which gives the product a special piquancy. The taste and smell of seafood due to the unique composition of extractives. In marine fish more than freshwater, so saltwater fish can be recommended for gastritis with low acidity, because it stimulates the appetite and promotes the secretion of gastric juice.
The main value of fish – easily digestible complete protein. Fish is digested in the human body within 2-3 hours. This can be explained by peculiarities in the structure of fish, namely a lower content of coarse connective tissue .
Products fish tender and juicy, that causes its widespread use in dietary and baby food.
The particular value of fish proteins is due to the ratio of amino acids. It has all the vital amino acids. A marine fish has a rather high content of amino acids: tryptophan, lysine and methionine. This brings it closer to its amino acid composition of ideal protein. Besides, it has advantages over animal meat protein, because it contains the amino acid taurine, which acts as a regulator of blood pressure, and thus prevents the development of hypertension. Taurine also stimulates the release of insulin, which regulates blood sugar levels.The most rich in taurine sea bass, cod, tuna and other oceanic fish.
Marine organisms are rich in valuable fats, which differ from fats of land animals. Fish oils have the ability to remain fluid at low temperatures than closer to the fat man, and therefore better absorbed. A very valuable property fat fish is low in cholesterol (20-30 mg %), therefore, the dietary addition of foods containing fat fish, rich in polyunsaturated fatty acids. which dissolve the cholesterol, significantly decreases the likelihood of atherosclerosis. Continue reading
The carp genus, belonging to the family Cyprinidae, represented by two species — silver and gold, or common carp.
The Golden or common carp is as carp and common carp dorsal fin long, hard spiny rays in dorsal and anal fins, but is distinguished by the absence of antennae and a single-row pharyngeal teeth. The back is dark brown, while the sides are Golden with a copper tint. Pectoral and abdominal fins reddish. It lives in Central and Eastern Europe, and in Siberia in swampy, overgrown ponds, in rivers is rare. Likes silt. For the winter carp buried in silt and hibernate even when shallow waters freeze to the bottom. They are able to burrow in the mud at a depth of 70 cm and this allows them to survive the dry summer, when shallow body of water completely dries up. It sustains the concentration of oxygen dissolved in water to 0.5 mg/l, lowering the pH to 4.5. The Golden carp is one of the most hardy species of fish and in some waters is the only representative of the fish population. Can reach masses up to 3 kg, and I individual weighing about a pound are a valuable trophy.
With all the advantages of common carp, unfortunately, it is slow-growing. Although in the southern regions the first year of growing under favorable conditions may reach a weight of 20 to 50 g, in the second year — 200 and even 300 g. In the middle zone two-year old Golden carp in prodajne exceed weight 100 — 150 g. Females are larger than males. Reach sexual maturity at age 3 to 4 years. Continue reading