scholarly journals 1990-1991 annual progress report, long-term Illinois River fish population monitoring program / Richard E. Sparks and K. Douglas Blodgett.

1991 ◽  
Author(s):  
Richard E. Sparks ◽  
K. Douglas. Blodgett ◽  
◽  
Keyword(s):  
Monitoring Program ◽  
Population Monitoring ◽  
Fish Population ◽  
Progress Report ◽  
Illinois River ◽  
Annual Progress Report ◽  
River Fish

scholarly journals The Long-Term Illinois River Fish Population Monitoring Program

Fisheries ◽  
2012 ◽  
Vol 37 (8) ◽  
pp. 340-350 ◽  
Author(s):  
Michael A. McClelland ◽  
Greg G. Sass ◽  
Thad R. Cook ◽  
Kevin S. Irons ◽  
Nerissa N. Michaels ◽  
...  
Keyword(s):  
Monitoring Program ◽  
Population Monitoring ◽  
Fish Population ◽  
Illinois River ◽  
River Fish

scholarly journals Over 50 years of fish community monitoring in Illinois’ large rivers: The evolution of methods used by the Illinois Natural History Survey’s Long-term Survey and Assessment of Large-River Fishes in Illinois

2019 ◽  
Vol 41 (1) ◽  
Author(s):  
Mark W. Fritts ◽  
Jason A. DeBoer ◽  
Daniel K. Gibson-Reinemer ◽  
Benjamin J. Lubinski ◽  
Michael A. McClelland ◽  
...  
Keyword(s):  
Fish Assemblages ◽  
Monitoring Program ◽  
Population Monitoring ◽  
Fish Population ◽  
Large River ◽  
Large Rivers ◽  
Illinois River ◽  
Pulsed Dc ◽  
Community Monitoring

This document describes the methodological evolution of the Long-Term Illinois Rivers Fish Population Monitoring Program since its inception. The principal changes include a shift from fixed-site sampling to stratified random sampling at the reach scale to benefit statistical robustness and a concurrent shift from AC electrofishing to pulsed-DC electrofishing to increase the breadth of the diversity and size classes of fishes encountered. These changes in methodology were implemented during the 2016 field season and are based on quantitative assessments of program data and other results from recent peer-reviewed publications. These refinements will likely improve the program’s ability to detect and describe patterns and trends in the fish assemblages of the Illinois River and other large rivers of Illinois and the Midwest.

Intrafragment riverscape conservation for an imperiled, small-bodied, pelagic-broadcast spawning minnow: speckled chub (Macrhybopsis aestivalis)

2015 ◽  
Vol 72 (4) ◽  
pp. 527-537 ◽  
Author(s):  
Christopher W. Hoagstrom ◽  
Thomas P. Archdeacon ◽  
Stephen R. Davenport ◽  
David L. Propst ◽  
James E. Brooks
Keyword(s):  
Flow Regime ◽  
Monitoring Program ◽  
Population Monitoring ◽  
Older Individuals ◽  
High Quality ◽  
Broadcast Spawning ◽  
Distributional Patterns ◽  
Class Strength ◽  
Explained Variation

Intrafragment ecology is little studied for imperiled riverine fishes although river fragmentation and habitat loss increasingly threaten sensitive species. A long-term population-monitoring program in the Pecos River, New Mexico, provided detailed data for 15 annual cohorts of speckled chub (Macrhybopsis aestivalis), which were used to assess intrafragment patterns in recruitment and year-class strength in relation to distributional patterns, flow-regime characteristics, and air temperature. Cohorts avoided a degraded upstream reach. Age-1 and older individuals had distributions consistently centered within a central, relict-ecosystem reach that contained high-quality habitat. Age-0 individuals were widespread within the relict-ecosystem reach and a channelized reach downstream. Distributional patterns suggested that some individuals that recruited in the channelized reach dispersed upstream into relict-ecosystem habitat thereafter. One cohort always numerically dominated the population because cohorts never lived beyond 2 years. Recruitment was density-independent and predicted year-class strength. No aspect of the flow regime explained variation in recruitment. Year-class strength was consistent among cohorts because of density-dependent mortality. High-quality habitat in a centralized location, potential for dispersal between channelized and relict-ecosystem reaches, and diffuse distribution of pelagic-broadcast propagules throughout both reaches combined to facilitate successful annual recruitment and population persistence.

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