Arctic tundra wetlands may be an important source of dissolved organic carbon (DOC) in rivers and the Ocean under global warming. We investigated stable water isotopes DOC concentration wetlands, tributaries, mainstream at lower reaches Indigirka River northeastern Siberia during summers 2010–2014 to assess complex hydrology role as sources riverine DOC. The had higher values δ 18 O than tribut...

This work presents a study of the formation cooling and steam fogs on Yenisei River during 2020. The above types resulted from changes in hydrothermal regime downstream Krasnoyarsk hydroelectric power station after its construction it is also associated with combination weather conditions water temperature river. Advective form summer when moist air cools over surface cold moving water. winter,...

The Geumho River in South Korea passes through a metropolitan area with high population density and multiple industrial complexes; therefore, the water quality of this river is significance for human health economic activities. This study assesses to inform management improve pollution control using multivariate statistics Korean Water Quality Index (KWQI). Principal component factor analyses i...

Total suspended sediments and the total dissolved solids (TDS) from three river gaging stations, near Delaware Water Gap, Riegelsville and Trenton on the Delaware River measured by the USGS were used to estimate the physical erosion, chemical weathering and total denudation rates of the Delaware River Basin. The denudation rates are 28 and 128 tons/km 2 /yr for the upper stream and downstream s...

Climate change-induced increases in summer water temperature have been associated with elevated mortality of adult sockeye salmon (Oncorhynchus nerka) during river migration. We show that cardiorespiratory physiology varies at the population level among Fraser River sockeye salmon and relates to historical environmental conditions encountered while migrating. Fish from populations with more cha...

Based on a high-quality dataset of 713 daily precipitation series, changes in daily precipitation events during 1960–2013 were observed in China’s ten largest river basins. Specifically, the amount of precipitation in four categories defined by fixed thresholds and their proportion on total precipitation were analyzed on annual and seasonal time scales. Results showed annual precipitation incre...

copepods are the main zooplankton assemblages in most tropical and semi-tropical estuaries. in this research, copepod population dynamics were investigated in helleh river estuary, persian gulf during four seasons beginning from summer 2011 to spring 2012.  samples were taken using plankton net with mesh size of 140 µm and vertical towing from 5 fixed-stations in mid-season. results showed that...