Sampling low dissolved oxygen waters can change population estimates

(September 2010) Ecofore researchers have been working with Lake Erie biologists from the Ohio Department of Natural Resources (ODNR) in Fairport, Ohio to better understand how hypoxia may influence ODNR’s annual fishery assessment surveys. Specifically, they are looking at how hypoxia may alter catchabilities of fish, and in turn, what impact this altered catchability (and…

EcoFore researchers receive awards

(July 2009) Kristin Arend (post-doctoral researcher Purdue University) received the Best Professional Paper Award at the Annual Meeting of the Indiana Chapter of the American Fisheries Society.  The paper was entitled: “Evaluating and forecasting effects of hypoxia on yellow perch habitat suitability in central Lake Erie.” Co-authors included: K. Arend, T. Höök, S. Ludsin, D.…

Nutrient loads driving variation in Lake Erie anoxia

(June 2009) The hypoxia team’s linked one-dimensional physical-dissolved oxygen model was calibrated to accurately describe the vertical temperature and dissolved oxygen structure in Lake Erie’s central basin.  This model, driven by climatological forcings and observed surface oxygen concentrations, was used to determine if the variation in thermal structure and mixing (i.e., the effects of climate)…

P inputs and P exports: What’s so special about 1992?

(April 2009) The watershed team is focused on analyzing P loading to watersheds from human activities, which are a major determinant of how much P is delivered to the Lake by the rivers draining Lake Erie watersheds. This team’s research adapts the nutrient mass balance approach that has been widely used to estimate loadings of nitrogen to coastal…