Upper Midwest Environmental Sciences Center
Pool 26, Upper Mississippi River 2005 Fish Collection Summary
This report is a bullet summary of the Long Term Resource Monitoring Program's (LTRMP) fish collection efforts conducted by the Great Rivers Field Station on Pool 26, Upper Mississippi River during 2005. Information on changes in fish catch over all years can be obtained from the Graphical Fish Database Browser.
- 182 fish collections were conducted using six gear types (Table 2.4), with 174 from randomly selected sites and 8 from a fixed site.
- Backwater; main channel border, unstructured; and side channel border strata received the most sampling effort (Table 2.4).
- In 2005, water levels did not greatly deviate from normal during most of the field season, and therefore did not affect sample allocations (Table 2.4; Figure 1.4).
- 15,891 fish were collected representing 54 species and 2 hybrids (Table 3.4). This total includes 17 unidentified suckers (Catostomidae) less than 90 mm long, 189 unidentified sunfishes (Centrarchidae) less than 30 mm long, and 176 unidentified minnows (Cyprinidae) less than 20 mm long.
- The LTRMP species total for Pool 26 before the 2005 season was 90; no new species were collected in the 2005 season (Table 3.4).
- No Illinois-listed threatened or endangered species were collected (Table 3.4).
- Other species that were collected and are noted as uncommon, rare, or probably strays from tributaries (Pitlo et al. 1995) in Pool 26 were blue sucker, golden redhorse, grass carp, logperch, hybrid striped bass, and smallmouth bass (Table
3.4).
- One white perch was collected in 2005. This is the second specimen of this invasive species collected by the LTRMP in Pool 26.
- Mean catch-per-unit-effort and standard error for stratified random and fixed-site sampling for each stratum are shown in Pool 26 tables. Length distributions for selected species of fish are shown in Figures 1 to 17.
Content manager: Jennie Sauer
Page Last Modified: April 17, 2018