The consumer-diet "Delta"13c and "Delta"15n enrichment in the benthic system of a tropical-subtropical continental shelf in southwestern atlantic - Corbisier, Thais Navajas; Petti, Mônica Angélica Varella; Bromberg, Sandra; Valiela, Ivan (International Conference on Applications of Stable Isotope Techniques to Ecological Studies, 6, 2007)