As visitor professor at Universidade Federal do Pará, my overarching goal is to provide a general and predictive understanding of aquatic ecology, and to promote the application of basic ecological science to water quality and conservation. I have 20 years' experience working in the Amazonian coast in research projects assessing the conservation of fish fauna and marine habitats. I have now published 87 papers in international journals, with a further four in press, 10 under review, 10 book chapters, and more than 170 papers in conference proceedings. A central focus of my research has been on freshwater and marine ecosystems and how human influences affect water quality and biological integrity. Microplastic pollution, heavy metals, stable isotopes analysis and use underwater stereo-video technology for sampling the relative abundance and lengths of fish remotely are major highlights of my studies.