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Fish Reports

tree 2001 Report

Table 2.6

Allocation of fish sampling effort among strata in La Grange Pool of the Illinois 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 12   14 12         4 42
Fyke net 10               4 14
Large hoop net     8 8         4 20
Small hoop net     8 8         4 20
Mini fyke net 10   8 8         4 30
Night electrofishing     2           4 6
Seine 8   12 12           32
Trawling                 8 8
Tandem fyke net   6               6
Tandem mini fyke net   6               6
Subtotal
 40 12 52 48 0 0 0 0 32 184

Sampling period = 2: August 1–September 14

Sampling gear BWCS BWCO SCB MCBU MCBW IMPS IMPO TRI TWZ TOTAL
Day electrofishing 12   14 12         4 42
Fyke net 10               4 14
Large hoop net     8 8         4 20
Small hoop net     8 8         4 20
Mini fyke net 10   8 8         4 30
Night electrofishing     2           4 6
Seine 8   12 12           32
Trawling                 8 8
Tandem fyke net   6               6
Tandem mini fyke net   6               6
Subtotal
 40 12 52 48 0 0 0 0 32 184

Sampling period = 3: September 15–October 31

Sampling gear BWCS BWCO SCB MCBU MCBW IMPS IMPO TRI TWZ TOTAL
Day electrofishing 12   14 12         4 42
Fyke net 10               4 14
Large hoop net     8 8         4 20
Small hoop net     8 8         4 20
Mini fyke net 10   8 8         4 30
Night electrofishing     2           4 6
Seine 8   12 12           32
Trawling                 8 8
Tandem fyke net   6               6
Tandem mini fyke net   6               6
Subtotal
 40 12 52 48 0 0 0 0 32 184
 Total
 120 36 156 144 0 0 0 0 96 552

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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