Spatial Variability in Nutrient Transport by HUC 8, State, and Subbasin Based on Mississippi/Atchafalaya River Basin SPARROW Models

2014 ◽  
Vol 50 (4) ◽  
pp. 988-1009 ◽  
Author(s):  
Dale M. Robertson ◽  
David A. Saad ◽  
Gregory E. Schwarz
Keyword(s):  
Spatial Variability ◽  
River Basin ◽  
Nutrient Transport ◽  
Atchafalaya River ◽  
Atchafalaya River Basin

Denitrification in cypress swamp within the Atchafalaya River Basin, Louisiana

Chemosphere ◽  
2008 ◽  
Vol 70 (5) ◽  
pp. 886-894 ◽  
Author(s):  
C.W. Lindau ◽  
R.D. Delaune ◽  
A.E. Scaroni ◽  
J.A. Nyman
Keyword(s):  
River Basin ◽  
Atchafalaya River ◽  
Cypress Swamp ◽  
Atchafalaya River Basin

scholarly journals Statistical Analysis of Nutrient Loads from the Mississippi-Atchafalaya River Basin (MARB) to the Gulf of Mexico

Environments ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 8
Author(s):  
Phyllis Okwan ◽  
Yi Zhen ◽  
Huan Feng ◽  
Shinjae Yoo ◽  
Murty S. Kambhampati ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Hurricane Katrina ◽  
River Basin ◽  
Weather Conditions ◽  
Steady Increase ◽  
Moderate Increase ◽  
Nutrient Loads ◽  
Atchafalaya River ◽  
Significant Difference ◽  
Atchafalaya River Basin

This study investigated the annual and seasonal variations in nutrient loads (NO2− + NO3− and orthophosphate) delivered to the Gulf of Mexico from the Mississippi-Atchafalaya River Basin (MARB) and examined the water quality variations. The results indicate that (1) annually, the mean NO2− + NO3− and orthophosphate loads showed a steady increase during 1996–1999, a persistent level during 2000–2007, and a moderate increase during 2008–2016; (2) seasonally, NO2− + NO3− and orthophosphate in MARB in spring and summer were higher than those in autumn and winter. Analysis of variance (ANOVA) identified highly significant differences among seasonal loads; and (3) the median value of NO2− + NO3− in normal weather conditions were higher than that during and right after the hurricanes, while the median value of orthophosphate loads in normal weather conditions was higher than that during the hurricanes, but higher than that right after hurricanes. The two-sample t-test indicates a significant difference (p < 0.046) in orthophosphate loads before and after Hurricane Katrina. Moreover, it is found that there is a significant (p < 0.01) increase in nutrient loads during normal weather conditions. The results indicate that hurricane seasons can significantly influence the nutrient loads from the MARB to the Gulf of Mexico.

scholarly journals Floodplain biogeochemical processing of floodwaters in the Atchafalaya River Basin during the Mississippi River flood of 2011

2014 ◽  
Vol 119 (4) ◽  
pp. 537-546 ◽  
Author(s):  
Durelle T. Scott ◽  
Richard F. Keim ◽  
Brandon L. Edwards ◽  
C. Nathan Jones ◽  
Daniel E. Kroes
Keyword(s):  
River Basin ◽  
Mississippi River ◽  
Atchafalaya River ◽  
River Flood ◽  
Atchafalaya River Basin
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