Relationship among Fish Assemblages and Main-Channel-Border Physical Habitats in the Unimpounded Upper Mississippi River

2004 ◽  
Vol 133 (2) ◽  
pp. 371-384 ◽  
Author(s):  
Valerie A. Barko ◽  
David P. Herzog ◽  
Robert A. Hrabik ◽  
John S. Scheibe
Keyword(s):  
Mississippi River ◽  
Fish Assemblages ◽  
Main Channel ◽  
Upper Mississippi River

Differences between main-channel and off-channel food webs in the upper Mississippi River revealed by fatty acid profiles of consumers

Inland Waters ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 101-106 ◽  
Author(s):  
James Larson ◽  
Michelle Bartsch ◽  
Steve Gutreuter ◽  
Brent Knights ◽  
Lynn Bartsch ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Food Webs ◽  
Mississippi River ◽  
Main Channel ◽  
Upper Mississippi River ◽  
Fatty Acid Profiles

Ecosystem metabolism and nutrient dynamics in the main channel and backwaters of the Upper Mississippi River

2015 ◽  
Vol 60 (9) ◽  
pp. 1863-1879 ◽  
Author(s):  
Jeffrey N. Houser ◽  
Lynn A. Bartsch ◽  
William B. Richardson ◽  
James T. Rogala ◽  
John F. Sullivan
Keyword(s):  
Mississippi River ◽  
Nutrient Dynamics ◽  
Main Channel ◽  
Ecosystem Metabolism ◽  
Upper Mississippi River

Patterns in abundance of fishes in main channels of the upper Mississippi River system

2001 ◽  
Vol 58 (5) ◽  
pp. 933-942 ◽  
Author(s):  
John M Dettmers ◽  
Steve Gutreuter ◽  
David H Wahl ◽  
Daniel A Soluk
Keyword(s):  
Mississippi River ◽  
Temporal Patterns ◽  
River System ◽  
Main Channel ◽  
Illinois River ◽  
Total Biomass ◽  
Upper Mississippi River ◽  
Spatial And Temporal Patterns ◽  
Key Species ◽  
Upper Mississippi River System

Abundance of fishes of the main channels of the upper Mississippi River system and of other large North American rivers is largely unknown because historic sampling methods have been inadequate. We used a bottom trawl to estimate spatial and temporal patterns in abundance in the navigation channels of Pool 26 of the Mississippi River and the lower Illinois River. Total biomass density averaged 21 and 29 kg·ha–1 in the navigation channels of Pool 26 and the lower Illinois River, respectively. We identified spatial and temporal patterns in catches of key species using a generalized linear model based on the negative binomial distribution. Some species, including shovelnose sturgeon (Scaphirhynchus platorynchus), are persistent residents of the main channel. Multiple-season residents, including freshwater drum (Aplodinotus grunniens), rely heavily on the main channel during most of the year but leave it briefly, for example to seek thermal refugia in backwaters during winters. We suggest revision of the prevailing notion that main channels of large temperate rivers serve mainly as corridors for movement among other habitat types.

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