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Title:Long-term Survey and Assessment of Large-River Fishes in Illinois, 2018
Author(s):DeBoer, Jason A.; Whitten, Andrya L.; Lubinski, Benjamin J.; Chick, John H.
Subject(s):Illinois River
Mississippi River
fish populations
Geographic Coverage:Illinois River, Illinois
Mississippi River
Abstract:This report presents a summary of those data collected during segment 30 (2018-2019) of the Long-term Survey and Assessment of Large-River Fishes in Illinois (LTEF), an annual survey by members of the Illinois Natural History Survey, with funds administered by the U.S. Fish and Wildlife Service and the Illinois Department of Natural Resources. Sampling for the LTEF program was conducted on: six reaches of the Illinois River Waterway and four segments or pools of the Mississippi River. In all segments of the LTEF program, all fish species collected were accurately identified, tallied, measured, and weighed. The catch rates of sportfish species were calculated as the number of individuals collected per hour (CPUEN ± standard error). Structural indices [Proportional Size Distribution (PSD) and Relative Weight (Wr)] were also calculated for several species of interest to regional managers. Catch rates and species varied among all sampling locations and sampling periods. Gizzard Shad and Emerald Shiners comprised the majority of the individuals caught, and Silver Carp and Common Carp accounted for the greatest proportion of the biomass collected in most sampling areas of the survey. Future analysis of CPUEN and PSD trends in sportfish populations sampled by the program may indicate inter-annual recruitment patterns or/and long-term trends in Illinois sportfish populations.
Issue Date:2019-07-09
Publisher:Illinois Natural History Survey
Series/Report:Technical Report INHS 2019 (15)
Federal Aid in Sport Fish Restoration F-101-R-30
Genre:Technical Report
Publication Status:unpublished
Peer Reviewed:not peer reviewed
Sponsor:U.S. Fish and Wildlife Service
Illinois Department of Natural Resources, Division of Fisheries
Rights Information:This document is a product of the Illinois Natural History Survey, and has been selected and made available by the Illinois Natural History Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended solely for noncommercial research and educational use, and proper attribution is requested.
Date Available in IDEALS:2019-07-19

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