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Fish Reports

2004 Report

Pool 13, Upper Mississippi River 2004 Fish Collection Summary

This report is a bullet summary of the Long Term Resource Monitoring Program's (LTRMP) fish collection efforts conducted by the Bellevue Field Station on Pool 13, Upper Mississippi River during 2004. Information on changes in fish catch over all years can be obtained from the Graphical Fish Database Browser.

 

• 300 fish collections were conducted using six gear types (Table 2.3), with 258 from randomly selected sites and 42 from fixed sites.
  
  
• Backwater; main channel border, unstructured; and side channel border strata received the most sampling effort (Table 2.3).
  
  
• In 2004, water levels were lower than normal during April and early May (typically the peak flood period), but considerably higher than normal during late May and June. Water levels did not affect sample allocations (Table 2.3; Figure 1.3).
  
  
• 24,907 fish were collected representing 64 species (Table 3.3).
  
  
• The LTRMP species total for Pool 13 before the 2004 season was 85; one new species was collected in the 2004 season—weed shiner (Notropis texanus; Table 3.3).
  
  
• Twenty-three weed shiners were collected that are listed as endangered in Iowa. Also three grass pickerel were collected that are listed as threatened in Iowa. Two hundred sixty-five pugnose minnows were collected that are an Iowa-listed species of special concern (Table 3.3).
  
  
• Other species that were collected and are noted as uncommon, rare, or probably strays from tributaries (Pitlo et al. 1995) in Pool 13 were black buffalo, bluntnose minnow, creek chub, green sunfish, Mississippi silvery minnow, quillback, slenderhead darter, silver redhorse, smallmouth bass, stonecat, and suckermouth minnow (Table 3.3).
  
  
• Mean catch-per-unit-effort and standard error for stratified random sampling and fixed-site sampling for each stratum are shown in Pool 13 tables. Length distributions for selected species of fish are shown in Figures 1 to 17.
  

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Page Last Modified: April 17, 2018