Interacting river discharge, tidal oscillation, and tropical rainfall across the 22,000 km Orinoco delta plain support diverse fresh and brackish water ecosystems. To develop environmental baseline information for this largely unpopulated region, we evaluate major coastal plain, shallow marine, and river systems of northeastern South America, which serves to identify principal sources and contr...

Soil heavy metal pollution is one of the main environmental problems in Pearl River Delta Economic Zone of China. Based on multi-purpose regional geochemical survey, regional eco-geochemical assessment, local eco-geochemical assessment and comprehensive appraisal, the eco-geochemical survey and assessment in Pearl River Delta Economic Zone of 41,698 km2 were completed. Samples from soils were c...

As one of the most active regions of land–ocean interaction among the large river deltas in the world, the Yellow River Delta (YRD) gains increasing concern on its ecological and environmental conditions. However, few studies on polycyclic aromatic hydrocarbons (PAHs) have been reported for this area. In this study, the distribution characteristics, probabilistic risk and possible sources of PA...

Climate change and human activity can both exert a role in the river discharge sediment load deltas when sea level remains relatively stable. The Pearl River Delta constitutes metropolitan region of Guangdong–Hong Kong–Macau Greater Bay Area, its evolution past future impacts sustainable development this region. In manuscript, core situated northern South China Sea, adjacent to Qiao Island Zhuh...

Citation: Ziervogel K, Osburn C, Brym A, Battles J, Joye S, D’souza N, Montoya J, Passow U and Arnosti C (2016) Linking Heterotrophic Microbial Activities with Particle Characteristics in Waters of the Mississippi River Delta in the Aftermath of Hurricane Isaac. Front. Mar. Sci. 3:8. doi: 10.3389/fmars.2016.00008 Linking Heterotrophic Microbial Activities with Particle Characteristics in Waters...

Introduction The sediments of the Yellow River delta record environmental changes in basin on a long time scale and are sensitive to river diversion sedimentary environment evolution. Methods In this study, cores YDC YDG near estuary since 1976 were taken as research object, parameterized end-member analysis model was used analyze grain-size data cores. Results results show that: main silty san...

Citation: Gonçalves-Araujo R, Stedmon CA, Heim B, Dubinenkov I, Kraberg A, Moiseev D and Bracher A (2015) From Fresh to Marine Waters: Characterization and Fate of Dissolved Organic Matter in the Lena River Delta Region, Siberia. Front. Mar. Sci. 2:108. doi: 10.3389/fmars.2015.00108 From Fresh to Marine Waters: Characterization and Fate of Dissolved Organic Matter in the Lena River Delta Region...

We analyzed residual PCBs in surface sediments at 19 sites in the Pearl River Delta in the wet and dry seasons. Seven indicative PCB congeners (PCB28, PCB52, PCB101, PCB118, PCB153, PCB138 and PCB180) were detected in the surface sediments, among which the detection rate and mass concentrations of PCB52 were the highest. Total concentrations of the seven PCBs ranged from 19.8 to 111 μg/kg, with...

The Pearl River Delta, one of the main regions of China’s export-oriented economy, has benefited from its traditional economic structure for three decades which in turn appeared to hinder further economic development recently. To advance industrial restructuring and upgrading, the governments have promulgated policies and appropriated special funds to optimize the industrial structure of the Pe...