Centre documentaire

Eutrophication mitigation in rivers: 30 years of trends in spatial and seasonal patterns of biogeochemistry of the Loire river

1. Introduction
2. Study area and data compilation
2.1. Geographical and physical characteristics
2.2. River monitoring data sets
3. Methods
3.1. Data-pre-processing
3.2. Building up spatiotemporal diagrams
3.3. Time series decomposition
4. Results
4.1. Long-term trends and longitudinal distributions of Chl a and nutrients
4.2. Seasonal shifts across the longitudinal distribution of Chl a and nutrients
4.3. Analysis of the main tributaries variations and their impacts on the Loire long-term trends
4.4. Seasonal amplitudes of Chl a, nutrients, O2 en pH in the middle Loire
5. Discussion
5.1. Role of agricultural and urban pressures on the Loire long-term variations
5.2. Nutrient limitation variation since 1980
5.3. Daily O2 and pH amplitudes as indicators of eutrophication mitigation
6. Conclusions
References