Fish Populations, Following a Drought,
In the Neosho and Marais des Cygnes Rivers
of Kansas

BY

JAMES EVERETT DEACON

CONTENTS

PAGE
Introduction[363]
Description of Neosho River[366]
Description of Marais des Cygnes River[367]
Methods[368]
Electrical Fishing Gear[368]
Seines[369]
Gill Nets[370]
Sodium Cyanide[370]
Rotenone[370]
Dyes[370]
Determination of Abundance[371]
Names of Fishes[371]
Annotated List of Species[371]
Fish-fauna of the Upper Neosho River[405]
Description of Study-areas[405]
Methods[406]
Changes in the Fauna at the Upper Neosho Station, 1957 through 1959[407]
Local Variability of the Fauna in Different Areas at the Upper Neosho Station, 1959[409]
Temporal Variability of Fauna in the Same Areas[411]
Population-Estimation[412]
Movement of Marked Fish[416]
Similarity of the Fauna at the Upper Neosho Station to the Faunas of Nearby Streams[418]
Comparison of the Fish-faunas of the Neosho and Marais des Cygnes Rivers[419]
Faunal Changes, 1957 Through 1959[420]
Conclusions[423]
Acknowledgments[425]
Literature Cited[425]

TABLES

PAGE
1. Stream-flow in Cubic Feet per Second (C. F. S.), Neosho River near Council Grove, Kansas[364]
2. Stream-flow in Cubic Feet per Second, Neosho River near Parsons, Kansas[364]
3. Stream-flow in Cubic Feet per Second, Marais des Cygnes River near Ottawa, Kansas[364]
4. Stream-flow in Cubic Feet per Second, Marais des Cygnes River at Trading Post, Kansas[365]
5. Numbers and sizes of long-nosed gar[372]
6. Numbers and sizes of short-nosed gar[374]
7. Length-frequency of channel catfish from the Neosho River[388]
8. Length-frequency of freshwater drum[402]
9. Average number of individuals captured per hour[402]
10. Numbers of fish seen or captured per hour[403]
11. Numbers of occurrences and numbers counted[404]
12. Percentage composition of the fish fauna at the Upper Neosho station in 1957, 1958 and 1959, as computed from results of rotenone collections[408]
13. Relative abundance of fish[410]
14. Changes in numbers of individuals[411]
15. Data used in making direct proportion population-estimations[414]
16. Data on movement of marked fish[416]