Deivid Araújo Magano

GRADIENTE DE CONSERVAÇÃO DE COMUNIDADES DE GASTRÓPODES TERRESTRES COMO INDICADORES ECOLÓGICOS, AL NORTE DE CHIAPAS, MÉXICO

Com o objetivo de conhecer a diversidade e riqueza de gastropodes terrestres em ambientes com diferentes graus de perturbacao, foram realizadas amostragens no municipio de Juarez, Chiapas - Mexico durante os meses de Fevereiro e Marco de 2013. Utilizando amostragens aleatorias simples e coletas manuais que foram peneiradas e analizadas em laboratorio. Foram coletados 778 organismos, identificando 20 especies, duas subclasses, quarto ordens, 16 familias e 16 generos. Noventa por cento dos representantes foram da subclasse Pulmonata e os 10% restantes da subordem Prosobranchia. As unicas especies de selva foram Averilliaco actiliata, Helicinia (Tristramina) tenuis, Spiraxis sp2 y Streptosthyla meridana. Os ambientes com maior similaridade foram a selva e floresta madura com uma similaridade de 72%.

VALORAÇÃO AMBIENTAL SOBRE A PERSPECTIVA DOS PRINCÍPIOS DA PREVENÇÃO E DA PRECAUÇÃO

Among the currently most debated questions when it comes to the relationship between economic, ecological and environmental systems refer to associate economic values to environmental goods and process services. Environmental economic valuation is the identification of non-economic social values relating to the environment, thereby exerting its “incorporation” in concrete economic institutions. The present study aims to conduct a discussion on the topic of environmental economic valuation, in order to measure the activities that generate impacts on the environment through the principles of prevention and precaution, thus demonstrating the importance of values associated maintenance of life for the human beings as members of the environment, as well as their intrinsic values. The methodology used as the source for bibliographic research were books, articles and notes published in scientific journals in the area which include the theme. Thus, environmental legislation grounded in economic and financial activities proposed to anticipate the actions of environmental damage, with the subterfuge of environmental law in the form of the principles of precaution and prevention, which makes it the most efficient and practical environmental valuation. Therefore, the economic value of an environmental good, shouldn’t be a fine or environmental reconnections at their pleasure, as consequence of environmental damage randomly and without anticipatory planning that characterizes the act in fact caused. And, just a way to legally manage the projects, which involve and impact the environment, always seeking to mitigate its losses