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Upper Midwest Environmental Sciences Center

Fish Reports

tree 2001 Report

Table 2.1

Allocation of fish sampling effort among strata in Pool 4 of the Upper Mississippi River during 2001. Table entries are numbers of successfully completed standardized monitoring collections.

Sampling period = 1: June 15–July 31

 

Sampling gear BWCS BWCO SCB MCBU MCBW IMPS IMPO TRI TWZ TOTAL
Day electrofishing 8   8 8 4         28
Fyke net 6               2 8
Large hoop net     6 4         2 12
Small hoop net     6 4         2 12
Mini fyke net 6   6 4         2 18
Night electrofishing                 4 4
Seine     12 12           24
Trawling                 4 4
Tandem fyke net   8               8
Tandem mini fyke net   8               8
Subtotal
 20 16 38 32 4 0 0 0 16 126

Sampling period = 2: August 1–September 14

 

Sampling gear BWCS BWCO SCB MCBU MCBW IMPS IMPO TRI TWZ TOTAL
Day electrofishing 8   8 8 4         28
Fyke net 6               2 8
Large hoop net     6 4         2 12
Small hoop net     6 4         2 12
Mini fyke net 6   6 4         2 18
Night electrofishing                 4 4
Seine     12 12           24
Trawling                 4 4
Tandem fyke net   8               8
Tandem mini fyke net   8               8
Subtotal
 20 16 38 32 4 0 0 0 16 126

Sampling period = 3: September 15–October 31

 

Sampling gear BWCS BWCO SCB MCBU MCBW IMPS IMPO TRI TWZ TOTAL
Day electrofishing 4   8 8 4         24
Fyke net 6               2 8
Large hoop net     6 4         2 12
Small hoop net     6 4         2 12
Mini fyke net 6   6 4         2 18
Night electrofishing                 4 4
Seine     12 12           24
Trawling                 4 4
Tandem fyke net   8               8
Tandem mini fyke net   8               8
Subtotal
 16 16 38 32 4 0 0 0 16 122
 Total
 56 48 114 96 12 0 0 0 48 374

 

Sampling strata:
BWCS - Backwater, contiguous, shoreline
BWCO - Backwater, contiguous, offshore
SCB - Side channel border
MCBU - Main channel border, unstructured
MCBW - Main channel border, wing dam
IMPS - Impounded, shoreline
IMPO - Impounded, offshore
TRI - Tributary mouth
TWZ - Tailwater

 

August 26, 2004

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