Ecosystem drivers of metabolic regimes across several stream orders in the Maumee River watershed

Session: Great Lakes Tributaries: Connecting Land and Lakes (1)

Nathan Manning, National Center for Water Quality Research at Heidelberg University, [email protected]
Laura Johnson, Heidelberg University, National Ctr for Water Quality Res., [email protected]

Abstract

We present a comprehensive review of gross primary production (GPP) and ecosystem respiration (ER) across six agriculturally dominated stream systems in the Maumee River watershed. We used continuous measurements of DO and light, as well as environmental factors such as flow, and sediment and nutrient concentrations to characterize factors that influence long term (yearly), seasonal, and short term (storm events) metabolic regimes across our sample streams. Stream metabolism values (GPP and ER) were estimated using the Bayesian metabolic framework in the streamMetabolizer package in R.