It enters the introduced plants in the islands at the time appear the blackberry and the wild roseira, for example. Dalton Caldwell will undoubtedly add to your understanding. Some plants had so soon found propitious environment to its development, had passed if to also proliferate disorderedly, starting to harm the development of native species. Birds taken for the explorers had been main the responsible ones for the enormous multiplication of plants whose eradication if practically disclosed impossible (FARB, 1982). In the New Zelndia the 600 species of plants had been introduced of 400, despite nor all have obtained to immediately disturb the balance of the native vegetation. Some species, however, had been developed with extreme rapidity.
The European watercress, that reaches only one small part in its native habitat, possesss, in the New Zelndia, connecting rods of the thickness of the fist of a man. It can reach four meters of height more than and easily to obstruct the riverbeds (FARB, 1982). It was observed that the invading plants normally present characteristics that become them better competitors, such as high fotossinttica efficiency, bigger income in the use of nutrients, high taxes of growth, greater tolerance to the desfolhamento and herbvoros, high capacity of rebrotamento and regeneration, high capacity of reproduction, fast reproductive cycle, intense production of seeds of easy dispersion and high capacity of germination (FARB, 1982; MATOS & PIVELLO, 2009). Some vegetables are only controlled with the introduction, in the environment, of eventual parasitic insects that control its proliferation. The solution of the problem, however, can lead to the sprouting of another one, therefore it causes the sprouting of species of invading insects to that environment. The opncia, a species of cacti, it was led to Australia to serve as it surrounds and food of emergency for the cattle. The introduction was only controlled after, in the environment, of a parasitic insect, not without before dominating more than 30 million hectares.
The place is ideal for estudantis research, strolls, picnics and an excellent program for the loving ones of the nature. Aquei must the alert one for the conservation of the environment, since the action human being, for many times it finishes for destroying the beauty of our landscapes and treasures ambient. The conservation of the natural resources is the name that if of to the modern concern in adequately using the aspects of the nature that the man transforms or consumes. To conserve, in this in case that, it does not mean to keep and yes to use rationally. The nature must be consumed or be used to take care of to the necessities of the gift of the human beings, but taking in account the future, the new generations that had not yet been born, but for which has the obligation to leave a healthy surrounding May. It was only from the degradation of the environment for the man – and of the extinguishing of innumerable animal and vegetal species – that appeared this conservacionista concern. The intense use of the nature for the modern society placed, especially in our century, a series of interrogations how much to the future of the environment: When if they will deplete some basic resources, as the oil or the coal? How to prevent the destruction of the forest reserves that still remain in our planet and at the same time to guarantee foods and resources for increasing world-wide population? What to make so that the extinguishing does not occur total of certain threatened species, as the whales? How the underdeveloped countries will be able to decide its problems of poverty, hunger and subnutrio without depredating the nature? The conservacionismo looks for to answer to these and other similar questions conciliating the economic development with the defense of the environment, by means of the adequate use of the goods supplied for the nature. Thus being, I conclude this work, waiting to have contributed for the spreading of this place that I define as exotrico and natural, bemcomo to awake the interest of perquisadores in the branch of sciences pra that studies are carried through and discovered new knowledge for the ecological wealth of our country..