public authorities should assess what recreational services can be offered citizens visitingaprotected natural area. therefore, the characterisation of visitors as well as the economic valuation of apark’srecreational use would allow the proposal of management strategies to satisfy visitors. for this purpose,410 surveys were taken of visitors to the calaresdelmundoandsimanatural park (spain). t...

Although there are substantial experimental, epidemiological and clinical evidences that high doses of ionizing radiation cause cancer and other detrimental biological effects, the health effects of human exposure to chronic low dose radiation exposures are still poorly known. People in some areas around the world live in dwellings with radiation and radon levels as much as more than 2...

In the context of aggravation environmental problems, in particular those related to use forest resources, mineral and fuel energy violation degradation natural ecosystems large areas, it became necessary preserve unique areas earth’s surface. Monitoring protected is an effective tool for maintaining complexes a high-quality condition, reducing level components environment. Currently, specially...