A global analysis of the susceptibility of river basins to invasion of a freshwater zooplankton ( Daphnia lumholtzi )

2020 ◽  
Author(s):  
Tatiane Mantovano ◽  
Dayani Bailly ◽  
José Hilário Delconte Ferreira ◽  
Eliezer Oliveira da Conceição ◽  
Fernanda A. S. Cassemiro ◽  
...  
Keyword(s):  
Global Analysis ◽  
River Basins ◽  
Daphnia Lumholtzi ◽  
Freshwater Zooplankton

scholarly journals How downstream sub-basins depend on upstream inflows to avoid scarcity: typology and global analysis of transboundary rivers

2018 ◽  
Vol 22 (5) ◽  
pp. 2795-2809 ◽  
Author(s):  
Hafsa Ahmed Munia ◽  
Joseph H. A. Guillaume ◽  
Naho Mirumachi ◽  
Yoshihide Wada ◽  
Matti Kummu
Keyword(s):  
Water Stress ◽  
Water Use ◽  
Water Availability ◽  
Water Scarcity ◽  
Management Practices ◽  
Global Analysis ◽  
Water Shortage ◽  
River Basins ◽  
Analytical Framework ◽  
Available Water

Abstract. Countries sharing river basins are often dependent upon water originating outside their boundaries; meaning that without that upstream water, water scarcity may occur with flow-on implications for water use and management. We develop a formalisation of this concept drawing on ideas about the transition between regimes from resilience literature, using water stress and water shortage as indicators of water scarcity. In our analytical framework, dependency occurs if water from upstream is needed to avoid scarcity. This can be diagnosed by comparing different types of water availability on which a sub-basin relies, in particular local runoff and upstream inflows. At the same time, possible upstream water withdrawals reduce available water downstream, influencing the latter water availability. By developing a framework of scarcity and dependency, we contribute to the understanding of transitions between system regimes. We apply our analytical framework to global transboundary river basins at the scale of sub-basin areas (SBAs). Our results show that 1175 million people live under water stress (42 % of the total transboundary population). Surprisingly, the majority (1150 million) of these currently suffer from stress only due to their own excessive water use and possible water from upstream does not have impact on the stress status – i.e. they are not yet dependent on upstream water to avoid stress – but could still impact on the intensity of the stress. At the same time, 386 million people (14 %) live in SBAs that can avoid stress owing to available water from upstream and have thus upstream dependency. In the case of water shortage, 306 million people (11 %) live in SBAs dependent on upstream water to avoid possible shortage. The identification of transitions between system regimes sheds light on how SBAs may be affected in the future, potentially contributing to further refined analysis of inter- and intrabasin hydro-political power relations and strategic planning of management practices in transboundary basins.

scholarly journals Global hydrobelts: improved reporting scale for water-related issues?

2012 ◽  
Vol 9 (8) ◽  
pp. 9119-9162
Author(s):  
M. Meybeck ◽  
M. Kummu ◽  
H. H. Dürr
Keyword(s):  
Population Density ◽  
Global Analysis ◽  
River Basins ◽  
Global Scale ◽  
General Symmetry ◽  
Latitude Belt ◽  
Average Temperature ◽  
The North ◽  
Natural Boundaries ◽  
North And South

Abstract. Questions related to water such as its availability, water needs or stress, or management, are mapped at various resolutions at the global scale. They are reported at many scales, mostly along political or continental boundaries. As such, they ignore the fundamental heterogeneity of the hydroclimate and the natural boundaries of the river basins. Here, we describe the continental landmasses according to eight global-scale hydrobelts strictly limited by river basins, defined at a 30′ (0.5°) resolution. The belts were defined and delineated, based primarily on the annual average temperature (T) and runoff (q), to maximise interbelt differences and minimise intrabelt variability. The belts were further divided into 29 hydroregions based on continental limits. This new global puzzle defines homogeneous and near-contiguous entities with similar hydrological and thermal regimes, glacial and postglacial basin histories, endorheism distribution and sensitivity to climate variations. The Mid-Latitude, Dry and Subtropical belts have northern and southern analogues and a general symmetry can be observed for T and q between them. The Boreal and Equatorial belts are unique. The hydroregions (median size 4.7 Mkm2) contrast strongly, with the average q ranging between 6 and 1393 mm yr−1 and the average T between −9.7 and +26.3 °C. Unlike the hydroclimate, the population density between the North and South belts and between the continents varies greatly, resulting in pronounced differences between the belts with analogues in both hemispheres. The population density ranges from 0.7 to 0.8 p km−2 for the North American Boreal and some Australian hydroregions to 280 p km−2 for the Asian part of the Northern Mid-Latitude belt. The combination of population densities and hydroclimate features results in very specific expressions of water-related characteristics in each of the 29 hydroregions. Our initial tests suggest that hydrobelt and hydroregion divisions are often more appropriate for water-relative global analysis and reporting than conventional continental or political divisions.

scholarly journals Global hydrobelts and hydroregions: improved reporting scale for water-related issues?

2013 ◽  
Vol 17 (3) ◽  
pp. 1093-1111 ◽  
Author(s):  
M. Meybeck ◽  
M. Kummu ◽  
H. H. Dürr
Keyword(s):  
Population Density ◽  
Global Analysis ◽  
River Basins ◽  
Global Scale ◽  
General Symmetry ◽  
Average Temperature ◽  
The North ◽  
Run Off ◽  
Natural Boundaries ◽  
Water Issues

Abstract. Global-scale water issues such as its availability, water needs or stress, or management, are mapped at various resolutions and reported at many scales, mostly along political or continental boundaries. As such, they ignore the fundamental heterogeneity of hydroclimates and natural boundaries of river basins. Here we describe the continental landmasses at two levels: eight hydrobelts strictly limited by river basins, defined at a 30' (0.5°) resolution, which are decomposed on continents as 26 hydroregions. The belts were defined and delineated, based primarily on the annual average temperature (T) and run-off (q), to maximise inter-belt differences and minimise intra-belt variability. This new global puzzle defines homogeneous and near-contiguous entities with similar hydrological and thermal regimes, glacial and postglacial basin histories, endorheism distribution and sensitivity to climate variations. The mid-latitude, dry and subtropical belts have northern and southern analogues and a general symmetry can be observed for T and q between them. The boreal and equatorial belts are unique. Population density between belts and between the continents varies greatly, resulting in pronounced differences between the belts with analogues in both hemispheres. Hydroregions (median size 4.7 M km2) are highly contrasted, with the average q ranging between 6 and 1393 mm yr−1 and the average T between −9.7 and +26.3 °C, and a population density ranging from 0.7 to 0.8 p km−2 for the North American boreal region and some Australian hydroregions to 280 p km−2 for some Asian hydroregions. The population/run-off ratio, normalised to a reference pristine region, is used to map and quantify the global population at risk of severe water quality degradation. Our initial tests suggest that hydrobelt and hydroregion divisions are often more appropriate than conventional continental or political divisions for the global analysis of river basins within the Earth system and of water resources. The GIS files of the hydrobelts and hydroregions are available at the supplement of this article and at doi:10.1594/PANGAEA.806957 as well as geotypes.net.

scholarly journals How downstream sub-basins depend on upstream inflows to avoid scarcity: typology and global analysis of transboundary rivers

2017 ◽  
Author(s):  
Hafsa Ahmed Munia ◽  
Joseph Guillaume ◽  
Naho Mirumachi ◽  
Yoshihide Wada ◽  
Kummu Matti
Keyword(s):  
Water Use ◽  
Water Scarcity ◽  
Management Practices ◽  
Global Analysis ◽  
River Basins ◽  
Transboundary Rivers ◽  
Transboundary River ◽  
Transboundary River Basins ◽  
Different Types ◽  
Local Water

Abstract. Countries sharing river basins are often dependent upon water originating outside their boundaries; meaning that without that upstream water, water scarcity may occur, with flow-on implications for water use and management. We develop a formalisation of this concept using water stress and shortage as indicators of water scarcity, and including both persistent and occasional scarcity. Dependency occurs if water from upstream is needed to avoid either persistent or occasional water scarcity. This can be diagnosed by comparing different types of water availability on which a sub-basin relies, starting with reliable local runoff (available even in a dry year), followed by less reliable local water (available in the wet year), reliable dry year inflows from possible upstream area, and finally less reliable wet year inflows from upstream. At the same time, possible upstream water withdrawals reduce available water downstream, influencing the latter two water availabilities. In this paper, we further present a typology describing how scarcity and dependency evolve in transboundary river basins, and use this typology for a global analysis of transboundary river basins at the scale of sub-basin areas (SBAs). Four groups of SBAs are identified that experience scarcity and dependency differently depending on their i) location in the basin, and ii) hydro-climate characteristics, specifically the level of reliable support provided by natural upstream inflows. Each group has its own set of transitions in scarcity and dependency category, driven by changes in local water demand and/or upstream withdrawals. Our results show that almost one billion people (33 % of the total transboundary population) live in SBAs that are dependent on upstream water to avoid stress because of their own water use, while 500 million people (17 % of the total transboundary population) live in SBAs dependent on upstream water to avoid possible shortage. The identification of groups and their transitions enables discussion of the pathways SBAs might take in future, potentially contributing to further refined analysis of inter and intrabasin hydro-political power relations and strategic planning of management practices in transboundary basins.

Local and global analysis of plasticity in ferritic-austenitic duplex steels

2001 ◽  
Vol 11 (PR5) ◽  
pp. Pr5-293-Pr5-300 ◽  
Author(s):  
V. V. Silberschmidt ◽  
M. Ortmayr ◽  
C. Messner ◽  
E. A. Werner
Keyword(s):  
Global Analysis ◽  
Duplex Steels

Do remittances differ depending on migration pathway and length of stay?

2016 ◽  
Vol 1 (1) ◽  
pp. 105-118
Author(s):  
Anita Pugliese ◽  
Julie Ray ◽  
Neli Esipova
Keyword(s):  
Length Of Stay ◽  
First Generation ◽  
Second Generation ◽  
Global Analysis ◽  
Large Sample ◽  
Migration Pathway ◽  
First Generation Migrants ◽  
Second Generation Migrants

This paper reports the results from Gallup’s global analysis of the likelihood of first-generation migrants, second-generation migrants and the native-born to send financial help in the form of money or goods to others inside or outside their respective country of residence. The findings in this paper are based on more than 450,000 interviews conducted through Gallup’s World Poll in 157 countries in 2012, 2013 and 2014. The sample includes more than 26,000 first-generation migrants and more than 20,000 second-generation migrants. The large sample enables Gallup to analyze first-generation migrants by the duration of their stay in their adopted country and compare their remittance behaviors with second-generation migrants and the native-born.

MODERN HYDROGRAPHIC AND WATER MANAGEMENT ZONING OF UKRAINE’S TERRITORY – IMPLEMENTATION OF THE WFD-2000/60/EC

2020 ◽  
Author(s):  
V.K. Khilchevskyi ◽  
Keyword(s):  
Water Management ◽  
Water Resources ◽  
River Basins ◽  
River Basin Management ◽  
The Black Sea ◽  
Main Function ◽  
River Basin Management Plans ◽  
Management Plans ◽  
The Crimea ◽  
Sea Coast

In contrast to the hydrological and hydrochemical zoning, hydrographic and water management zoning of Ukraine (2016) was created on a basin basis, taking into account the boundaries of river basins, and not physiographic zoning. The main function of hydrographic and water management zoning is water management. Primary is hydrographic zoning, and water management - based on it. The description of modern hydrographic zoning of the territory of Ukraine, approved in 2016 by the Verkhovna Rada of Ukraine and included in the Water Code of Ukraine is given. Hydrographic zoning is carried out for the development and implementation of river basin management plans. On the territory of Ukraine nine areas of river basins are allocated: Dnipro; Dnister; Danube; Southern Bug; Don; Vistula; rivers of the Crimea; rivers of the Black Sea coast; rivers of the Azov Sea coast 13 sub-basins are allocated in four river basins district. The water management zoning is described - the division of hydrographic units into water management areas, which is carried out for the development of water management balances. In the regions of the river basins in the territory of Ukraine allocated 132 water management areas, 59 of which are located in the Dnipro basin. About 9,000 bodies of surface water allocated for monitoring in Ukraine. Approved zoning is the implementation of the provisions of the EU Water Framework Directive 2000/60 / EC in the management of water resources in Ukraine. Modern hydrographic and water management zoning of the territory of Ukraine approximates the management of water resources of the state to European requirements.

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