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.

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 Comparison of Fish Catch Between an Electric Seine and Backpack Electrofishers in Shoal Habitat of the Chipola River, Florida

2017 ◽  
Vol 9 (1) ◽  
pp. 36-44
Author(s):  
Ted Alfermann ◽  
Andy Strickland ◽  
Christopher Middaugh ◽  
Phong Nguyen ◽  
Erin Leone
Keyword(s):  
Fish Community ◽  
Relative Effectiveness ◽  
Monitoring Program ◽  
Large River ◽  
Comparison Study ◽  
Community Monitoring ◽  
Fish Catch ◽  
River Shoals ◽  
Habitat Variables

Abstract We conducted a gear comparison study to determine the best fish-sampling methodology in shoal habitat to assist with the development of a long-term fish community monitoring program on the Chipola River, Florida. Shoal habitat occurs throughout the southeastern United States, is shallow (< 1 m), and contains rock substrate and outcroppings, which limits boat electrofishing to the habitat margins. We compared the relative effectiveness of an electric seine and backpack electrofishers. Twenty-five randomly selected sites (4 m wide by 5 m long) per gear type were block netted and sampled across four shoals from August 28 to October 3, 2014. Habitat variables were recorded for each site. Using backpack electrofishers, 1,155 fish representing 21 species were collected. Using the electric seine, 1,036 fish representing 22 species were collected. We found no significant differences between gear types in mean total catch per site, mean species richness per site, Shannon's diversity, Simpson's dominance, Pielou's evenness, or the rate of species accumulation. Therefore, we consider the two gear types to be equally effective for block-netted sites in large river shoals. Differences in available equipment, funding, and personnel were compared and may ultimately determine which gear type is used in future studies.

scholarly journals Hydrology controls recruitment of two invasive cyprinids: bigheaded carp reproduction in a navigable large river

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3641 ◽  
Author(s):  
Daniel K. Gibson-Reinemer ◽  
Levi E. Solomon ◽  
Richard M. Pendleton ◽  
John H. Chick ◽  
Andrew F. Casper
Keyword(s):  
Mississippi River ◽  
Silver Carp ◽  
Monitoring Program ◽  
Large River ◽  
Asian Carp ◽  
Bighead Carp ◽  
Illinois River ◽  
Hypophthalmichthys Molitrix ◽  
The Past ◽  
Causative Factors

In the Mississippi River Basin of North America, invasive bigheaded carp (silver carpHypophthalmichthys molitrixand bighead carpH. nobilis, also referred to as Asian carp) have spread rapidly over the past several decades. In the Illinois River, an important tributary of the Upper Mississippi River, reproduction appears to be sporadic and frequently unsuccessful, yet bigheaded carp densities in this river are among the highest recorded on the continent. Understanding the causative factors behind erratic recruitment in this commercially-harvested invasive species is important for both limiting their spread and managing their harvest. We analyzed weekly catch records from 15 years of a standardized monitoring program to document the emergence of age-0 bigheaded carp in relation to environmental conditions. The appearance of age-0 fish was generally linked to hydrographic attributes, which probably serve as a cue for spawning. However, we found profound differences in the number of age-0 fish among years, which varied by as much as five orders of magnitude in successive years. The strong link between summer flooding and age-0 fish production we observed emphasizes the importance of understanding the hydrologic context in which sustained invasions occur. Despite evidence of sporadic recruitment, bigheaded carp populations in the Illinois River appear to be consistent or increasing because of particularly strong, episodic year classes.

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.

Historical Changes in Large River Fish Assemblages of the Americas

2005 ◽  
Keyword(s):  
Fish Assemblage ◽  
Fish Assemblages ◽  
River Management ◽  
Large River ◽  
Large Rivers ◽  
Pertinent Literature ◽  
Historical Changes ◽  
Time To Learn ◽  
River Fish

<em>Abstract.</em>—This book’s objective is to document historical changes in the fish assemblages of large American rivers, and to determine patterns in and rationale for those changes. In this chapter, we review pertinent literature on large rivers and fish assemblages worldwide and briefly introduce the chapters. We expect that the information contained in this book will aid river management in general, and stimulate similar historical fish assemblage studies elsewhere. There will never be a better time to learn and understand what has been changed and to reverse or slow undesirable changes.

Fish Assemblages in Large Tropical Reservoirs: Overview of Fish Population Monitoring Methods

2016 ◽  
Vol 24 (2) ◽  
pp. 160-177 ◽  
Author(s):  
Anne Tessier ◽  
Stephane Descloux ◽  
Raymond Lae ◽  
Maud Cottet ◽  
Pierre Guedant ◽  
...  
Keyword(s):  
Fish Assemblages ◽  
Population Monitoring ◽  
Fish Population ◽  
Monitoring Methods ◽  
Tropical Reservoirs

Implications of an invasive fish barrier for the long‐term recovery of native fish assemblages in a previously degraded northeastern Illinois River system

2019 ◽  
Vol 35 (7) ◽  
pp. 1044-1052
Author(s):  
Matthew E. Altenritter ◽  
Stephen M. Pescitelli ◽  
Andrya L. Whitten ◽  
Andrew F. Casper
Keyword(s):  
Fish Assemblages ◽  
River System ◽  
Illinois River ◽  
Native Fish ◽  
Invasive Fish
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