This paper results from discussions triggered during the "Stream Ecology Symposium" that took place at the XIII Congress of the Brazilian Society of Limnology in September of 2011 in Natal. Brazil. Based on our experiences. we have raised several questions regarding ecological studies of headwater streams facing threats under global-changes and proposed numerous subjects to be address... https://www.lightemupsequences.com/hot-choice-Lagoon-Super-Nintendo-Used-Loose-p15945-flash-choice