Large shallow lakes, like Lake St. Clair in the Great Lakes region, are often assumed to be well mixed. But this assumption has consequences for predicting downstream nutrient loads, particularly when this assumption is incorrect. Lake St. Clair is a small shallow lake upstream of Lake Erie. Understanding nutrient dynamics in this lake is critical for predicting nutrient loads to Lake Erie where high nutrient loads have led to recurring algal blooms.
In a new paper co-authored by Lake Futures researchers Serghei Bocaniov and Philippe Van Cappellen, along with Donald Scavia, this assumption is challenged to explore how small shallow lakes influence downstream nutrient loading.
Nutrient pollution from excess fertilizer use threatens water quality around the world. Wetlands, lakes and reservoirs can limit the movement of these nutrients to downstream waterways, protecting their water quality. But, little is known about how their size influences their ability to retain these nutrients.
Igor Markelov, Lake Futures PhD candidate, successfully defended his PhD thesis titled ‘Internal Loading in Lakes and Reservoirs’, with interest in bioenergetics of redox gradient zones and biogeochemical cycling. Igor completed his work in the Ecohydrology Research group under the supervision of Philippe Van Cappellen.