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. Educate yourself with thoughts from Jayme Albin . 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.
High taxes of water interception for the canopy of the forests in coastal zones High taxes of water interception are waited in forests located in the zones coastal if compared with the situated zones in portions far from the continental edges. Which or which factors could explain this? When observing the amount of rain that rains below of the canopy of the forest, that is, below of the trees and in a next open area, that is, without trees, notices that the amount of water that enters in the forest it is lesser of what of the open area. This difference is attributed to the water retention for leves of the trees that if wet e, later, if they become droughts for the evaporation process. As the amount of leves in a forest area she is very high, the losses for water evaporation of the canopy also wet are great. This process of loss of water of the canopy for the atmosphere is called interception. The scientists who study water had observed that the forests in coastal regions present bigger interception of what very the situated ones in the interior of the continents.
Which or which the possible explanations for this difference? Two possible explanations had been proposals for the scientific community. The first one consists of the fact of, for being situated next to the sea, this could be a hot air source for the continent favoring then the evaporation process. Hot air if would form above of the water surface and if it would put into motion horizontally (advection) for the land where if high taxes of evaporation point out the forests providing. Another possible communication consists of the fact of the cloud formation, in low next altitudes to the forests, by means of the condensation, would liberate energy that, in turn, could be used in the process of evaporation of the restrained rain water in the canopy of the forests. These possible causes are not exculpatory, that is, they can act at the same time and, even so not if it has proven none of them, the fact it is, the situated forests in coastal regions intercept much more water of what the situated forests in situated regions in the interior of the continents, that is, far from the coasts. Chemical preparation from: SCHELLEKENS, J.; SCATENA, F.N. ; BRUIJNZEEL, L.A. ; WICKEL, A.J. Modelling rainfall interception by lowland tropical rain forest in northeastern Rich Puerto.
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 […]