Natural impacts generally do not destroy reefs of when isolated chorales. But the climatic changes come gaining prominence throughout the decade, to the measure that the scientists had extended the knowledge of the link between emissions of greenhouse gases, globe temperatures in ascension, rise of the level of the sea among others is factors that are closely on to the destruction and death of reefs of chorales. The events of natural order happen more or less thus, the oceans are in constant heating, probably results of the climatic changes, estressam the chorales the point to expel the seaweed inhabits that them, leaving them ' ' branqueados' '. Beyond all its essential existence for the balance of the alimentary chain, the reefs have mainly the characteristic to protect erosion beaches, serve of shelter for reproduction and cleanness of thousand of marine animals. The small estressantes variations of temperature, salinities, toxins are extremely sensible and until the light.
If its capacity to search foods and energy not it will be cured by the polyps (that they have), the chorale finishes dying. The activities antrpica, but common arrive in port are it of terrestrial origin, due to intense agricultural and tourist activity of the region. The extration of chorales is practical other that it causes irreversible damages. It fishes it is another important and excellent activity the coastal community, but also it contributes for degradation, since many times do not have a concern in the preservation of the there existing species. It fishes it ' ' esportiva' ' also cause damages. Another factor aggravation is the tourism, is esteem that on average this area receives 3000 people in the ends from week; With peaks of up to 4729 visitors per day. (It was not considered periods of events). The lack of tourist lines of direction more directed the conservation, also characterizes a bigger threat still to reefs of chorales. Another alarming factor is the littoral deforestations of that region, therefore cause sedimentation excess (siltation), empobrecendo the ground and invading sea adentro, reaching reefs. One mega study carried through for American biologists, esteem that, if nothing it will be made to reduce the predatory action of the man, the chorales can disappear in less than 100 years.