Following large explosive volcanic eruptions precipitation decreases over much of the globe1-6, particularly in climatologically wet regions4,5. Stratospheric volcanic aerosols reflect sunlight, which reduces evaporation, whilst surface cooling stabilises the atmosphere and reduces its water-holding capacity7. Circulation changes modulate this global precipitation reduction on regional scales1,...

Rivers are critical links in the carbon and nitrogen cycle in aquatic, terrestrial, and atmospheric environments. Here riverine carbon and nitrogen exports in nine large rivers on the Tibetan Plateau - the "Water Tower of Asia" - were investigated in the monsoon season from 2013 to 2015. Compared with the world average, concentrations of dissolved inorganic carbon (DIC, 30.7mg/L) were high in r...

surface waters such as lakes and rivers which are multipurpose fields used for drinking water supply, agricultural irrigation, fisheries and energy production are being threatened by domestic, industrial and agricultural pollution caused by rapidly growing population. due to the insufficient numbers of studies on lake bafa, the largest coastal lake of turkey, this study was conducted to investi...

Low flow selections are essential to water resource management, water supply planning, and watershed ecosystem restoration. In this study, a new approach, namely the frequent-low (FL) approach (or frequent-low index), was developed based on the minimum frequent-low flow or level used in minimum flows and/or levels program in northeast Florida, USA. This FL approach was then compared to the conv...

Methane (CH4 ) fluxes from world rivers are still poorly constrained, with measurements restricted mainly to temperate climates. Additional river flux measurements, including spatio-temporal studies, are important to refine extrapolations. Here we assess the spatio-temporal variability of CH4 fluxes from the Amazon and its main tributaries, the Negro, Solimões, Madeira, Tapajós, Xingu, and Pará...

Introduction Background Purpose and scope Acknowledgments Data sources and analyses Data sources Data analyses Spatial distribution of polychlorinated biphenyls in common carp and walleye in the Mississippi, Minnesota, and St. Croix Rivers Comparison among individual sites Comparison among river segments Temporal distribution of polychlorinated biphenyls in common carp and walleye in the Missis...

In this research, monthly hydrological and daily meteorological data were collected across China for the period 1956–2012. Modified Mann–Kendall tests, double mass curve analysis, and correlation statistics were performed to identify the long-term trends and interrelation of the hydrometeorological variables and to examine the influencing factors of streamflow and sediment. The results are as f...

We compared the effects of water resource development on migratory fish in two North American rivers using a descriptive approach based on four high-level indicators: (1) trends in abundance of Pacific salmon, (2) reliance on artificial production to maintain fisheries, (3) proportion of adult salmon that are wild- versus hatchery-origin, and (4) number of salmon populations needing federal pro...

There are several freshwater systems associated to large rivers in South America, being the inland wetlands one of substantial significance from an environmental and ecological point of view. Largely sub-valued and unknown, the permanent-temporary flooded ecosystems related to the Parana River in Argentina and Paraguay must be studied in view to their conservation. In the particular case of the...