Seasonal and interannual dynamics of river-floodplain multispecies fisheries in relation to flood pulses in the Lower Amazon

2016 ◽  
Vol 183 ◽  
pp. 352-359 ◽  
Author(s):  
Victoria J. Isaac ◽  
Leandro Castello ◽  
Paulo R. Brasil Santos ◽  
Mauro L. Ruffino
Keyword(s):  
River Floodplain ◽  
Multispecies Fisheries ◽  
Seasonal And Interannual Dynamics ◽  
Flood Pulses ◽  
Interannual Dynamics

Seasonal and Interannual Dynamics of Phytoplankton, Phytomicroepiphyton, and Nutrients Content in the River Section of the Kanev Reservoir

2016 ◽  
Vol 52 (1) ◽  
pp. 49-61 ◽  
Author(s):  
V. I. Shcherbak ◽  
V. M. Yakushin ◽  
A. M. Zadorozhnaya ◽  
N. Ye. Semenyuk ◽  
M. I. Linchuk
Keyword(s):  
River Section ◽  
Seasonal And Interannual Dynamics ◽  
Interannual Dynamics

Flood pulses control soil nitrogen cycling in a dynamic river floodplain

Geoderma ◽  
2014 ◽  
Vol 228-229 ◽  
pp. 14-24 ◽  
Author(s):  
J. Shrestha ◽  
P.A. Niklaus ◽  
N. Pasquale ◽  
B. Huber ◽  
R.L. Barnard ◽  
...  
Keyword(s):  
Nitrogen Cycling ◽  
Soil Nitrogen ◽  
Control Soil ◽  
River Floodplain ◽  
Flood Pulses ◽  
Soil Nitrogen Cycling

scholarly journals Flux partitioning in an old-growth forest: seasonal and interannual dynamics

2008 ◽  
Vol 28 (4) ◽  
pp. 509-520 ◽  
Author(s):  
M. Falk ◽  
S. Wharton ◽  
M. Schroeder ◽  
S. Ustin ◽  
K. T. P. U
Keyword(s):  
Old Growth ◽  
Old Growth Forest ◽  
Seasonal And Interannual Dynamics ◽  
Flux Partitioning ◽  
Interannual Dynamics

Seasonal and interannual dynamics in diatom production in the Cariaco Basin, Venezuela

2009 ◽  
Vol 56 (4) ◽  
pp. 571-581 ◽  
Author(s):  
Oscar E. Romero ◽  
Robert C. Thunell ◽  
Yrene Astor ◽  
Ramon Varela
Keyword(s):  
Cariaco Basin ◽  
Seasonal And Interannual Dynamics ◽  
Interannual Dynamics

Response of a floodplain fish community to river-floodplain connectivity: natural versus managed reconnection

2014 ◽  
Vol 71 (2) ◽  
pp. 236-245 ◽  
Author(s):  
R.J. Stoffels ◽  
K.R. Clarke ◽  
R.A. Rehwinkel ◽  
B.J. McCarthy
Keyword(s):  
Native Species ◽  
Fish Community ◽  
Large Scale ◽  
Environmental Flows ◽  
Regulated River ◽  
Pest Species ◽  
Fish Community Structure ◽  
River Floodplain ◽  
Natural Connection ◽  
Flood Pulses

To restore lateral connectivity in highly regulated river-floodplain systems, it has become necessary to implement localized, “managed” connection flows, made possible using floodplain irrigation infrastructure. These managed flows contrast with “natural”, large-scale, overbank flood pulses. We compared the effects of a managed and a natural connection event on (i) the composition of the large-bodied fish community and (ii) the structure of an endangered catfish population of a large floodplain lake. The change in community composition following the managed connection was not greater than that exhibited between seasons or years during disconnection. By contrast, the change in fish community structure following the natural connection was much larger than that attributed to background, within- and between-year variability during disconnection. Catfish population structure only changed significantly following the natural flood. While the natural flood increased various population rates of native fishes, it also increased those of non-native carp, a pest species. To have a positive influence on native biodiversity, environmental flows may need to be delivered to floodplains in a way that simulates the properties of natural flood pulses. A challenge, however, will be managing river-floodplain connectivity to benefit native more than non-native species.

Fish as potential dispersal agents for floodplain plants: first evidence in North America

2003 ◽  
Vol 60 (12) ◽  
pp. 1437-1439 ◽  
Author(s):  
John H Chick ◽  
Robert J Cosgriff ◽  
Lori S Gittinger
Keyword(s):  
Seed Dispersal ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Mississippi River ◽  
Common Garden ◽  
River Floodplain ◽  
American River ◽  
Flood Pulses ◽  
Germination Success ◽  
Seasonal Flood

In river–floodplain ecosystems with seasonal flood pulses, many species display adaptations to take advantage of resources in the aquatic–terrestrial transition zone. Frugivory and seed dispersal by fishes is a clear example of such adaptations, known primarily from South American river–floodplain systems. Here, we document consumption of red mulberry (Morus rubra) and swamp privet (Forestiera acuminata) fruit by channel catfish (Ictalurus punctatus) in the floodplain of the Mississippi River, U.S.A., and demonstrate that red mulberry and swamp privet seeds will germinate after being consumed by channel catfish. In a common-garden experiment, consumption of fruits and seeds by channel catfish improved germination success of these riparian plants relative to a treatment simulating fruit dropped during a flood without being consumed by fish. This is the first study to provide evidence of frugivory and viability of seeds ingested by fish in a North American river–floodplain ecosystem. Frugivory and seed dispersal by fishes may be more widespread than previously thought.

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