Collecting weekly water samples from three Mackenzie Delta lakes over a 2-month span in 2006, Chateauvert et al. measured how the concentrations of TEP and other organic compounds varied following the annual flooding of the Mackenzie River. The authors find that the concentration of TEP varied by up to two orders of magnitude over the course of the study period, peaking immediately following the June flood and declining steadily afterward. They also find that the lake best connected to the river had the highest TEP concentrations. These findings ran directly counter to the authors' initial hypothesis of how TEP concentrations should evolve in the lakes. The authors find that changes in the concentration of chromophoric dissolved organic mattera form of organic material derived almost exclusively from river water in the regioncould account for more than half of the measured TEP variability.
Journal of Geophysical ResearchBiogeosciences, doi:10.1029/2012JG002132, 2012
Title: Abundance and patterns of transparent exopolymer particles (TEP) in Arctic floodplain lakes of the Mackenzie River Delta
Authors: C. Adam Chateauvert and Lance F. W. Lesack: Departments of Geography and Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada;
Max L. Bothwell: Pacific Biological Station, Environment
|Contact: Kate Ramsayer|
American Geophysical Union