Multi-trophic level spatial patterns in Lake Michigan

Session: Spatial Dynamics in the Pelagia of Large Lakes – Technological Advances and Applications

David Warner, USGS, [email protected]
Patricia Armenio, USGS Great Lakes Science Center, [email protected]

Abstract

Recent research has provided evidence that there are three-dimensional spatial patterns in the relative abundance of organisms at different trophic levels in Lake Michigan. We sought to use multiple methods to quantify any spatial differences and/or similarities in the distributions of chlorophyll, zooplankton, and fish. Data sources included CTD casts with paired chlorophyll extractions, zooplankton tows, dual-rfequency acoustics, autonomous underwater vehicle, and satellites. Further, we used statistical modeling to identify potential drivers of spatial patterns. Findings will be evaluated in the context of prior studies and methodologies.