News & Events
Large-scale phylogenetic and functional biogeography of aquatic bacteria across northern landscapes
Speaker(s): Prof Paul del Giorgio , UQAM, Canada
When: 24 February 2016 (3pm)
Where: SBS Classroom 3 (Level 1)
Type: Seminars

Abstract

The boreal landscape has high density of  lakes and rivers forming complex and highly interconnected aquatic networks that are also tightly linked among with to their surrounding terrestrial landscape. These aquatic networks harbor bacterial communities that are taxonomically and functionally extremely diverse and heterogeneous, but the origin, distribution and regulation of this vast microbial diversity is not well understood. Here we will discuss the large scale biogeography of bacterial communities in these aquatic networks across the boreal biome, and explore the main environmental and geographic drivers underlying these patters. We will further attempt to establish connections between the patterns in composition and in functional capacities of these bacterial communities linked to the use of dissolved organic matter in these boreal networks. Finally, we will attempt to identify the potential seedbanks that underlie the patterns in community composition, and use these to reassess our concept of bacterial metacommunities in boreal landscapes.

Biography

Dr. Paul del Giorgio carried out his undergraduate studies in biology and ecology at the Universidad de Buenos Aires, and then moved on to McGill University in Montreal (Canada), where he completed a PhD exploring the patterns of metabolism and carbon cycling in lakes. He later expanded this interest into the ecology of aquatic microbes and their role in the functioning of freshwater and marine ecosystems. In recent years his group has increasingly focused on carbon and greenhouse dynamics in boreal surface waters, including rivers, lakes and wetlands, their connections to the terrestrial landscape, and the role that these aquatic ecosystems play in regional and global C budgets. They are also exploring the large scale biogeography of freshwater bacterioplankton, and the interactions between microbes and organic matter across the boreal waterscape. Currently a professor at the Université du Québec à Montréal (Québec, Canada), Paul also holds the NSERC Industrial Research Chair in Carbon Biogeochemistry in Boreal Aquatic Systems (CarBBAS Chair).