You are here:
EPA ORD GLTED 2021 Lake Michigan CSMI Sampling
Citation:
Gerads, J., D. Bolgrien, A. Cotter, S. Miller, R. Lepak, J. Hoffman, AND A. Banerji. EPA ORD GLTED 2021 Lake Michigan CSMI Sampling. Cooperative Science and Monitoring Initiative (CSMI) Lake Michigan 2021 Data Roundup, Virtual, Michigan, December 10, 2021. https://doi.org/10.23645/epacomptox.18709925
Impact/Purpose:
Presentation to the Cooperative Science and Monitoring Initiative (CSMI) Lake Michigan 2021 Data Roundup (December 2021). This abstract and presentation will summarize the number and types of samples and data collected by EPA ORD GLTED for CSMI Lake Michigan 2021. EPA requries that CSMI partner agencies track and report on the disposition and processing of data and samples to ensure the integrity of results used in subsequent analyses and publications.
Description:
This abstract and presentation summarize the number and types of samples and data collected by EPA ORD GLTED for CSMI Lake Michigan 2021. EPA requries that CSMI partner agencies track and report the disposition and processing of data and samples to ensure the integrity of results used in subsequent analyses and publications. In July 2021, GLTED staff sampled 7 sites along 6 shore-normal transects (or 42 total sites) in northern Lake Michigan using the RV Lake Explorer II. Concurrent sampling was done at 14 transects in the southern lake by the USGS and EPA's Great Lakes National Program Office (GLNPO) onborad the RV Lake Guardian. The data and samples collected and the distribution of sampling sites were determined by the cooperating science agencies in response to the Lake Michigan Lakewide Action and Management Plan (LAMP). A key objective was measure relationships between the attentuation of UV radiation and the distritribution of larval fish and zooplankton. A consequence of increased water clarity in the Great Lakes is the deepened penetration of UV radiation. The development and trophic intereactions of larval fish and zooplankton may be negatively impacted by increased UV radiation exposure. The depth of 1% surface UV levels determined the depths of larvel fish and zooplankton collections. CTD, multichannel fluorescence, and particle size data were collected as surface to bottom profiles. Water chemistry samples were collected at 3 sites per transect. All data and samples were tracked from their collection to the processing lab. GLNPO provided only water chemistry samples from selected sites in southern Lake Michigan while USGS collected the water, larval fish, and zooplankton samples. Preliminary profile data collected by GLTED have been processed, QA checked, and depth-binned at 1 m intervals and are available to CSMI partners. Water chemistry samples are all accounted for but are still being analyzed by GLTED. Zooplankton samples have been delivered to an EPA contractor for taxonomic analysis. Larvel fish samples have been delivered to the USGS for taxonomic analysis. Dissolved organic carbon and zooplankton stable isotope samples have been delivered to responsible partners. Sharing the current dispositions of data and samples among CSMI partners is an critical but early step in making high quality scientific information available with which to address the science priorities in the LAMP.
URLs/Downloads:
DOI: EPA ORD GLTED 2021 Lake Michigan CSMI Sampling
CSMI LAKE MICHIGAN DATA PRESENTATION_CONDENSED_12.7.21.PDF (PDF, NA pp, 781.65 KB, about PDF)