The immeasurable diversity of nature on our planet: scientists consider to 3500 species of mammals and more than 850 000 species of insects. Despite the fact that already for many centuries is explored flora and fauna, and annually published reports of discoveries of new species, which find even in long inhabited and explored areas. So, in the early 30-ies of our century was known to 800 thousand species of butterflies, and by 1942 he already 900 thousand species. Even less studied is the life in the oceans, which often make sensational discoveries.
The existence in the seas and oceans are dangerous animals the people knew even in ancient times, although along with very real views were widespread tales of fantastic sea monsters. It was known about the danger of injections of some animals, on the toxicity of some marine animals by eating them for food and, of course, about large aggressive fish – the shark. Currently published a lot of papers devoted to the description of poisoning from the ingestion of marine animals in different parts of the World ocean. So, only in 50-ies of our century from such poisoning suffered tysjacheletij. According to the researchers, only poisonous fish there are about 500 species, most of which live in the salty waters.
By climatic and geographical basis distinguish polar, Northern, temperate, subtropical and tropical zones. The majority of our population lives in Northern and moderate climatic zones and therefore are not familiar with the fauna and flora of the tropics. Year-round abundance of warmth in them contributes to the rapid development of wildlife. So, in the Amazon region, has about 15 thousand different species of animals. Continue reading
The pond could become a real jewel of your garden, but only if it is properly designed, constructed and receives appropriate care.
The choice of location of pond: This must not be a shady place under the trees. The falling leaves will pollute the water and growth of roots may cause damage to the coating of the walls of the reservoir or even the plastic mold.
Construction material: the most commonly used plastic film or as finished shapes. If you are planning a large pond, it is better to use the tape if less than 4 sq. m. – the simplest way using ready-made forms.
To fill small ponds are frequently used plants meadow and wetlands.
Aquatic plants suitable for settlement of a pond:
In the vicinity of the ground water is never completely dry.
In this area you are planting moisture-loving plants such as astilbe of arendse, function (host), Siberian iris. tradescantia virginiana, daylilies, bergenia, bergenia, loosestrife, marsh forget-me-not, globeflowers. In this area you can plant grasses such as miscanthus, Mannik great. Trees and shrubs areas of wet meadows: Japanese or Manchurian willow, cotoneaster horizontal, ornamental maples. Trees and shrubs conifers which love shady and moist sites: rhododendrons, azaleas. the hydrangea.kalmii. Continue reading
Algae is a very important part of aquarium because many aquarists immediately abandon their hobby because they are unable to overcome the invasion of these plants. In most cases ososki, leading to subsequent problems with algae, are associated with earlier stage of the installation of the aquarium. In fact, in the aquarium will not have algae problems if you follow a few basic rules.
Even if – with the best intentions – You don’t want the appearance of algae in Aquarama, You must show proper respect to them. If You will better know the nature of the algae, you will be generally easier to deal with them.
Algae – the old vegetation on the planet
About 3 billion years ago, blue algae appeared on earth and became the first vegetation on it. It is the oldest of living organisms, the well known chlorophyll – crusadea the substance that gives green color to the leaves and photosynthesis, through which nutrients can be done with the help of light, one of the most outstanding phenomena in the creation of the world. The appearance of blue algae was closely associated with the growth of oxygen in the atmosphere. From it was formed the ozone layer which in turn is protected from the deadly UV rays, making the residents of water poverkhnostyami. Continue reading