scholarly journals Shift in a Large River Fish Assemblage: Body-Size and Trophic Structure Dynamics

PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0124954 ◽  
Author(s):  
Kyle J. Broadway ◽  
Mark Pyron ◽  
James R. Gammon ◽  
Brent A. Murry
Keyword(s):  
Body Size ◽  
Fish Assemblage ◽  
Trophic Structure ◽  
Large River ◽  
Structure Dynamics ◽  
River Fish

Altered body size distributions in a large river fish community enriched by sewage

2002 ◽  
Vol 59 (5) ◽  
pp. 819-828 ◽  
Author(s):  
Adrian M.H deBruyn ◽  
David J Marcogliese ◽  
Joseph B Rasmussen
Keyword(s):  
Body Size ◽  
Upper Bound ◽  
Fish Community ◽  
Local Variation ◽  
Large River ◽  
Habitat Characteristics ◽  
Size Distributions ◽  
Treated Sewage ◽  
Energetic Constraints ◽  
River Fish

We used two approaches (interspecific upper bound and normalized biomass spectrum, NBS) to study size distributions in a littoral fish community across a natural gradient of epiphytic primary production and at sites enriched by primary-treated sewage. The upper bound of the interspecific density – body size relationship supported universal energetic constraints on the regional assemblage but revealed substantial variation in size distributions at a local scale. Multivariate analysis of the modes composing the NBS suggested possible mechanisms for this local variation in size distributions. Only the largest organisms had higher densities at higher levels of productivity. Densities of smaller organisms could be explained by a combination of habitat characteristics and feeding interactions.

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.

Spatially Dependent Responses of a Large-River Fish Assemblage to Bank Stabilization and Side Channels

2017 ◽  
Vol 146 (5) ◽  
pp. 967-982 ◽  
Author(s):  
Ann Marie Reinhold ◽  
Robert G. Bramblett ◽  
Alexander V. Zale ◽  
Geoffrey C. Poole ◽  
David W. Roberts
Keyword(s):  
Fish Assemblage ◽  
Large River ◽  
Side Channels ◽  
Bank Stabilization ◽  
River Fish

scholarly journals Valley‐scale hydrogeomorphology drives river fish assemblage variation in Mongolia

2021 ◽  
Author(s):  
Alain Maasri ◽  
Mark Pyron ◽  
Emily R. Arsenault ◽  
James H. Thorp ◽  
Bud Mendsaikhan ◽  
...  
Keyword(s):  
Fish Assemblage ◽  
River Fish

Assessing power of large river fish monitoring programs to detect population changes: the Missouri river sturgeon example

2011 ◽  
Vol 27 (2) ◽  
pp. 282-290 ◽  
Author(s):  
M. L. Wildhaber ◽  
S. H. Holan ◽  
J. L. Bryan ◽  
D. W. Gladish ◽  
M. Ellersieck
Keyword(s):  
Missouri River ◽  
Large River ◽  
Population Changes ◽  
Monitoring Programs ◽  
Fish Monitoring ◽  
River Fish

Historical Changes in Large River Fish Assemblages of the Americas

2005 ◽  
Keyword(s):  
Relative Abundance ◽  
Mississippi River ◽  
Largemouth Bass ◽  
Fish Assemblage ◽  
Fish Assemblages ◽  
Micropterus Salmoides ◽  
Lepomis Macrochirus ◽  
Large River ◽  
Frequency Of Occurrence ◽  
Abundance And Distribution

<em>Abstract.</em>—An investigation of historical fisheries information for pools 4–13 of the upper Mississippi River (UMR) was conducted to 1) determine the pre-1938 relative abundance and distribution of bluegill <em>Lepomis macrochirus </em>and largemouth bass <em>Micropterus salmoides, </em>2) determine the composition and relative abundance of the preimpoundment fish assemblage, and 3) determine if a shift in frequency of occurrence and relative abundance has occurred due to impoundment.

scholarly journals The trophic ecology of a desert river fish assemblage: influence of season and hydrologic variability

Ecosphere ◽  
2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Kathrine E. Behn ◽  
Colden V. Baxter
Keyword(s):  
Fish Assemblage ◽  
Trophic Ecology ◽  
Hydrologic Variability ◽  
River Fish

The role of Spadefoot Toad tadpoles in wetland trophic structure as influenced by environmental and morphological factors

2011 ◽  
Vol 89 (1) ◽  
pp. 47-59 ◽  
Author(s):  
D. M. Ghioca-Robrecht ◽  
L. M. Smith
Keyword(s):  
Body Size ◽  
Great Plains ◽  
Trophic Structure ◽  
Trophic Levels ◽  
Wetland Ecosystems ◽  
Southern Great Plains ◽  
Larval Amphibians ◽  
Spadefoot Toad ◽  
Spea Bombifrons ◽  
And Function

Larval amphibians reach high densities in playa wetlands in the Southern Great Plains (SGP), USA, and thus may influence the entire structure and function of these ecosystems. We investigated whether both carnivorous and omnivorous morphotypes of Spadefoot Toad tadpoles (New Mexico Spadefoot, Spea multiplicata (Cope, 1863), and Plains Spadefoot, Spea bombifrons (Cope, 1863)) would exhibit a macrophagous feeding behavior that would allow them to occupy several trophic levels in playas. We also compared tadpole diets and foregut widths as influenced by the land use surrounding playas (cultivated versus grassland watersheds), year (dry versus wet year), and body size (snout-to-vent length). Tadpole diets were dominated by detritus and diatoms and tadpole foreguts increased with body size. Generally, more arthropods and less cyanobacteria were found in Spea tadpole diets as tadpoles grew larger, suggesting they influence different trophic levels with age. Foreguts were wider in carnivores than omnivores, suggesting carnivores had increased ability to ingest larger prey. Also, omnivores had wider foreguts in cropland than grassland playas, suggesting they ingest larger food items in cropland playas. From estimates of the amounts of invertebrates, detritus, and algae consumed by Spea tadpoles, we demonstrate that these larvae influence the entire trophic structure of wetland ecosystems.

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