scholarly journals Exploring Spatially Explicit Changes in Carbon Budgets of Global River Basins during the 20th Century

2021 ◽  
Author(s):  
Wim J. van Hoek ◽  
Junjie Wang ◽  
Lauriane Vilmin ◽  
Arthur H.W. Beusen ◽  
José M. Mogollón ◽  
...  
Keyword(s):  
20Th Century ◽  
River Basins ◽  
Spatially Explicit ◽  
Carbon Budgets

scholarly journals Deriving spatially explicit water uses from land use change modelling results in four river basins across Europe

2018 ◽  
Vol 628-629 ◽  
pp. 1079-1097 ◽  
Author(s):  
Verena Huber García ◽  
Swen Meyer ◽  
Kasper Kok ◽  
Peter Verweij ◽  
Ralf Ludwig
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
River Basins ◽  
Spatially Explicit ◽  
Explicit Water ◽  
Water Uses

scholarly journals A century scale human-induced hydrological and ecological changes of wetlands of two large river basins in Australia (Murray) and China (Yangtze): development of an adaptive water resource management framework

2015 ◽  
Vol 12 (8) ◽  
pp. 8247-8287 ◽  
Author(s):  
G. R. Kattel ◽  
X. Dong ◽  
X. Yang
Keyword(s):  
Water Quality ◽  
20Th Century ◽  
Human Disturbance ◽  
Water Resource Management ◽  
River Basins ◽  
River Regulation ◽  
Large River ◽  
Management Framework ◽  
Biological Communities ◽  
Large River Basins

Abstract. Recently, the provision of food and water resources of two of the world's large river basins, the Murray and the Yangtze, has been significantly altered through widespread landscape modification. Long-term sedimentary archives, dating back to past centuries, from wetlands of these river basins reveal that rapid, basin-wide development has reduced resilience of biological communities, resulting in considerable decline in ecosystem services, including water quality. In particular, large-scale human disturbance to river systems, due to river regulation during the mid-20th century, has transformed the hydrology of rivers and wetlands, causing widespread disturbance to aquatic biological communities. Historical changes of cladoceran zooplankton (water fleas) were used to assess the hydrology and ecology of three Murray and Yangtze River wetlands over the past century. Subfossil assemblages of cladocerans retrieved from sediment cores (94, 45 and 65 cm) of three wetlands: Kings Billabong (Murray), Zhangdu and Liangzi Lakes (Yangtze) strongly responded to hydrological changes of the river after the mid-20th century. River regulation caused by construction of dams and weirs, and river channel modifications has led to hydrological alterations. The hydrological disturbances were either: (1) a prolonged inundation of wetlands, or (2) reduced river flow, which caused variability in wetland depth. These phenomena subsequently transformed the natural wetland habitats, leading to a switch in cladoceran assemblages preferring poor water quality and eutrophication. An adaptive water resource management framework for both of these river basins has been proposed to restore or optimize the conditions of wetland ecosystems impacted by 20th century human disturbance and climate change.

scholarly journals A century-scale, human-induced ecohydrological evolution of wetlands of two large river basins in Australia (Murray) and China (Yangtze)

2016 ◽  
Vol 20 (6) ◽  
pp. 2151-2168 ◽  
Author(s):  
Giri R. Kattel ◽  
Xuhui Dong ◽  
Xiangdong Yang
Keyword(s):  
Water Quality ◽  
Ecosystem Services ◽  
20Th Century ◽  
Large Scale ◽  
River Flow ◽  
River Basins ◽  
River Regulation ◽  
Past Century ◽  
Biological Communities ◽  
Landscape Modification

Abstract. Recently, the provision of food and water resources of two of the world's largest river basins, the Murray and the Yangtze, has been significantly altered through widespread landscape modification. Long-term sedimentary archives, dating back for some centuries from wetlands of these river basins, reveal that rapid, basin-wide development has reduced the resilience of biological communities, resulting in considerable decline in ecosystem services, including water quality. Large-scale human disturbance to river systems, due to river regulation during the mid-20th century, has transformed the hydrology of rivers and wetlands, causing widespread modification of aquatic biological communities. Changes to cladoceran zooplankton (water fleas) were used to assess the historical hydrology and ecology of three Murray and Yangtze river wetlands over the past century. Subfossil assemblages of cladocerans retrieved from sediment cores (94, 45, and 65 cm) of three wetlands: Kings Billabong (Murray), Zhangdu, and Liangzi lakes (Yangtze), showed strong responses to hydrological changes in the river after the mid-20th century. In particular, river regulation caused by construction of dams and weirs together with river channel modifications, has led to significant hydrological alterations. These hydrological disturbances were either (1) a prolonged inundation of wetlands or (2) reduced river flow, both of which caused variability in wetland depth. Inevitably, these phenomena have subsequently transformed the natural wetland habitats, leading to a switch in cladoceran assemblages to species preferring poor water quality, and in some cases to eutrophication. The quantitative and qualitative decline of wetland water conditions is indicative of reduced ecosystem services, and requires effective restoration measures for both river basins which have been impacted by recent socioeconomic development and climate change.

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