A quarter century of declining suspended sediment fluxes in the Mississippi River and the effect of the 1993 flood

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
Arthur J. Horowitz
Keyword(s):  
Suspended Sediment ◽  
Mississippi River ◽  
Quarter Century ◽  
Sediment Fluxes

Suspended sediment fluxes in a tidal wetland: Measurement, controlling factors, and error analysis

Estuaries ◽  
2005 ◽  
Vol 28 (6) ◽  
pp. 812-822 ◽  
Author(s):  
Neil K. Ganju ◽  
David H. Schoellhamer ◽  
Brian A. Bergamaschi
Keyword(s):  
Error Analysis ◽  
Suspended Sediment ◽  
Controlling Factors ◽  
Tidal Wetland ◽  
Sediment Fluxes

Suspended sediment fluxes in chalk streams in the Hampshire Avon catchment, U.K.

Hydrobiologia ◽  
2003 ◽  
Vol 494 (1-3) ◽  
pp. 111-117 ◽  
Author(s):  
M. J. T. Heywood ◽  
D. E. Walling
Keyword(s):  
Suspended Sediment ◽  
Sediment Fluxes ◽  
Chalk Streams

Growth and mortality rates of the zebra mussel, Dreissena polymorpha, in the Lower Mississippi River

1999 ◽  
Vol 56 (5) ◽  
pp. 748-759 ◽  
Author(s):  
Yvonne C Allen ◽  
Bruce A Thompson ◽  
Charles W Ramcharan
Keyword(s):  
Suspended Sediment ◽  
Mississippi River ◽  
Dreissena Polymorpha ◽  
Size Structure ◽  
Seasonal Pattern ◽  
Shell Growth ◽  
Seasonal Temperature ◽  
Southern Limit ◽  
Summer Mortality ◽  
Lower Mississippi River

We investigated seasonal growth and mortality of a population of zebra mussels, Dreissena polymorpha, near the extreme southern limit of their current North American distribution. Dreissena in the Lower Mississippi River experience seasonal regimes of temperature and suspended sediment that are distinctly different from those found in northern lentic environments. Shell growth and mortality were determined biweekly using marked animals in caged environments. Tissue condition was also estimated biweekly using mussels from caged and wild environments. Our results demonstrate that, although annual growth is comparable with that reported for more temperate environments, the seasonal pattern of increase is different. Shell growth and tissue condition were highest during the early spring. Tissue condition declined and shell growth ceased during the summer, when temperatures remained at 29-30°C for 3 months. This midsummer depression was accompanied by increased mortality, particularly for mussels greater than 15 mm. Condition improved for all sizes in fall and winter. These patterns of growth and mortality appear to be primarily driven by fluctuations in seasonal temperature and spawning condition with some influence of suspended sediment. Our observations indicate that periodic summer mortality events will occur, and the extent of this mortality will depend primarily on temperature, population size structure, and spring tissue condition.

Sign in / Sign up

Export Citation Format

Share Document