Upper Midwest Environmental Sciences Center
Pool 8, Upper Mississippi River 2000 Fish Collection Summary
This report is a summary of the Long Term Resource Monitoring Program's (LTRMP) fish collection efforts conducted by the Onalaska Field Station on Pool 8, Upper Mississippi River during 2000. Information on changes in fish catch over all years can be obtained from the Graphical Fish Database Browser.
- Because of budget constraints, a 29% reduction in total effort (from
1999 to present) was implemented. The greatest reductions occurred in
the backwater, impounded, main channel border, and wing dam strata (Table
2.2).
- 390 fish collections were conducted using 10 gear types (Table
2.2).
- Water levels did not affect sample allocations (Table
2.2; Figure 1.2).
- Of the 390 fish collections, 346 were from randomly selected sites. Fifty-four
collections were made at fixed sites.
- Backwater, main channel border, and side channel border strata received
the most sampling effort (Table 2.2).
- 52,041 fish were collected representing 74 species and 6 hybrids (Table
3.2).
- Historical fish distribution records for the Upper Mississippi River
(Pitlo et al. 1995) document 99 fish species from Pool 8.
- The LTRMP species total for Pool 8 before the 2000 season was 90;
no new species were added to this total since 1997.
- One goldeye was collected, a Wisconsin-listed endangered species (Table
3.2).
- One blue sucker, 59 river redhorse, and 1 black buffalo all of which
are threatened in Wisconsin were collected (Table
3.2).
- Mean catch-per-unit-effort and standard error for fish collected
by gears using stratified random (Tables
4.2-12.2) and fixed-site sampling (Tables
15.2-21.2) for each stratum are shown.
- Length distributions for selected species of fish are shown in Figures 2.2 to 19.2.
Content manager: Jennie Sauer
Page Last Modified: April 17, 2018