Analysis of Environmental Disclosure in Brazilian High Environmental Impact Corporations Listed on BM&FBOVESPA

The objective of this study was to identify the environmental information that Brazilian corporations, classified as having high environmental impact listed on the BM&FBOVESPA, disclose on their websites. The sample consisted of 43 corporations. The methodological approach used was quantitative and the collection of evidence was bibliographical, documentary and non-participant observation in the sites of the corporations that compose the sample. The data were treated by means of content analysis, descriptive statistics and analysis of variance (ANOVA). The results show that the category "Other environmental information" is the most widely publicized, while "Environmental policies" is the indicator with the highest level of disclosure. It also points to the segment of "pulp and paper" as the one that provides the most environmental information. When the information is analyzed by segment, the low level of disclosure is evident, which indicates the need for increased disclosure of environmental information by corporations. The analysis of variance indicates that the averages are not equal among the exposed indicators, which confirms the different levels of disclosure of corporations classified as having high environmental impact.