TY - THES A1 - Burdack, Doreen T1 - Water management policies and their impact on irrigated crop production in the Murray-Darling Basin, Australia T1 - Wasserregulierungsstrategien und deren Auswirkungen auf bewässerte Feldfrüchteproduktion im Murray-Darling Flusseinzugsgebiet, Australien N2 - The economic impact analysis contained in this book shows how irrigation farming is particularly susceptible when applying certain water management policies in the Australian Murray-Darling Basin, one of the world largest river basins and Australia’s most fertile region. By comparing different pricing and non-pricing water management policies with the help of the Water Integrated Market Model, it is found that the impact of water demand reducing policies is most severe on crops that need to be intensively irrigated and are at the same time less water productive. A combination of increasingly frequent and severe droughts and the application of policies that decrease agricultural water demand, in the same region, will create a situation in which the highly water dependent crops rice and cotton cannot be cultivated at all. N2 - Die ökonomische Folgenanalyse in diesem Buch zeigt, dass insbesondere Landwirte, die stark auf Bewässerung angewiesen sind, von Wasserregulierungsstrategien im Australischen Murray-Darling Becken betroffen sind. Dieses Gebiet ist eines der größten Flussbecken weltweit und zugleich Australiens fruchtbarste Region. Durch den Vergleich von verschiedenen Preisstrategien und anderen Ansätzen konnte mit Hilfe des Water Integrated Market Models herausgefunden werden, dass die Auswirkungen auf hochgradig wasserabhängige Feldfrüchte mit geringeren Wasserproduktivitäten am stärksten sind. Die Kombination von häufigeren und intensiveren Trockenzeiten und einer Regulierungspolitik mit dem Ziel, die Nachfrage nach Wasser zu verringern, führt dazu, dass in ein und derselben Region hochgradig wasserabhängige Feldfrüchte wie Reis und Baumwolle mit geringeren Wasserproduktivitäten nicht mehr angebaut werden können. T3 - Potsdam Economic Studies - 4 KW - Wasserregulierung KW - Wasserpolitik KW - Bewässerung KW - landwirtschaftliche Produktion KW - Australien KW - water management KW - water policy KW - irrigation KW - agricultural production KW - Australia Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-72245 SN - 978-3-86956-306-0 PB - Universitätsverlag Potsdam CY - Potsdam ER - TY - JOUR A1 - de Araujo, Jose Carlos A1 - Bronstert, Axel T1 - A method to assess hydrological drought in semi-arid environments and its application to the Jaguaribe River basin, Brazil JF - Water International N2 - This manuscript proposes a method to assess hydrological drought in semi-arid environments under high impoundment rate and applies it to the semi-arid Jaguaribe River basin in Brazil. It analyzes droughts (1) in the largest reservoir systems; (2) in the Upper Basin, considering 4744 reservoirs, 800 wells and almost 18,000 cisterns; and (3) in reservoirs of different sizes during multiyear droughts. Results show that the water demand is constrained in the basin; hydrological and meteorological droughts are often out of phase; there is a negative correlation between storage level and drought severity; and the small systems cannot cope with long-term droughts. KW - Reservoirs KW - Brazil KW - multiyear drought KW - water management KW - impoundment rate KW - water demand Y1 - 2016 U6 - https://doi.org/10.1080/02508060.2015.1113077 SN - 0250-8060 SN - 1941-1707 VL - 41 SP - 213 EP - 230 PB - Wiley-Blackwell CY - Abingdon ER - TY - GEN A1 - Kühn, Michael A1 - Schöne, Tim T1 - Multivariate regression model from water level and production rate time series for the geothermal reservoir Waiwera (New Zealand) T2 - Energy procedia N2 - Water management tools are necessary to guarantee the preservation of natural resources while ensuring optimum utilization. Linear regression models are a simple and quick solution for creating prognostic capabilities. Multivariate models show higher precision than univariate models. In the case of Waiwera, implementation of individual production rates is more accurate than applying just the total production rate. A maximum of approximately 1,075 m3/day can be pumped to ensure a water level of at least 0.5 m a.s.l. in the monitoring well. The model should be renewed annually to implement new data and current water level trends to keep the quality. KW - geothermal reservoir KW - water management KW - data based model KW - multivariate regression KW - coefficient of determination KW - scenario analysis Y1 - 2017 U6 - https://doi.org/10.1016/j.egypro.2017.08.196 SN - 1876-6102 VL - 125 SP - 571 EP - 579 PB - Elsevier CY - Amsterdam ER - TY - GEN A1 - Smetanová, Anna A1 - Müller, Anne A1 - Zargar, Morteza A1 - Suleiman, Mohamed A. A1 - Gholami, Faraz Rabei A1 - Mousavi, Maryam T1 - Mesoscale mapping of sediment source hotspots for dam sediment management in data-sparse semi-arid catchments T2 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - Land degradation and water availability in semi-arid regions are interdependent challenges for management that are influenced by climatic and anthropogenic changes. Erosion and high sediment loads in rivers cause reservoir siltation and decrease storage capacity, which pose risk on water security for citizens, agriculture, and industry. In regions where resources for management are limited, identifying spatial-temporal variability of sediment sources is crucial to decrease siltation. Despite widespread availability of rigorous methods, approaches simplifying spatial and temporal variability of erosion are often inappropriately applied to very data sparse semi-arid regions. In this work, we review existing approaches for mapping erosional hotspots, and provide an example of spatial-temporal mapping approach in two case study regions. The barriers limiting data availability and their effects on erosion mapping methods, their validation, and resulting prioritization of leverage management areas are discussed. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 1388 KW - reservoir siltation KW - water security KW - water management KW - data sharing KW - spatial-temporal KW - erosion hotspots KW - mapping KW - global datasets KW - mesoscale KW - leverage areas Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-472441 SN - 1866-8372 IS - 2 ER - TY - JOUR A1 - Smetanová, Anna A1 - Müller, Anne A1 - Zargar, Morteza A1 - Suleiman, Mohamed A. A1 - Gholami, Faraz Rabei A1 - Mousavi, Maryam T1 - Mesoscale mapping of sediment source hotspots for dam sediment management in data-sparse semi-arid catchments JF - Water N2 - Land degradation and water availability in semi-arid regions are interdependent challenges for management that are influenced by climatic and anthropogenic changes. Erosion and high sediment loads in rivers cause reservoir siltation and decrease storage capacity, which pose risk on water security for citizens, agriculture, and industry. In regions where resources for management are limited, identifying spatial-temporal variability of sediment sources is crucial to decrease siltation. Despite widespread availability of rigorous methods, approaches simplifying spatial and temporal variability of erosion are often inappropriately applied to very data sparse semi-arid regions. In this work, we review existing approaches for mapping erosional hotspots, and provide an example of spatial-temporal mapping approach in two case study regions. The barriers limiting data availability and their effects on erosion mapping methods, their validation, and resulting prioritization of leverage management areas are discussed. KW - reservoir siltation KW - water security KW - water management KW - data sharing KW - spatial-temporal KW - erosion hotspots KW - mapping KW - global datasets KW - mesoscale KW - leverage areas Y1 - 2020 U6 - https://doi.org/10.3390/w12020396 SN - 2073-4441 VL - 12 IS - 2 SP - 1 EP - 24 PB - MDPI CY - Basel ER - TY - JOUR A1 - Tekken, Vera A1 - Kropp, Jürgen T1 - Climate-Driven or Human-Induced indicating severe water scarcity in the Moulouya River Basin (Morocco) JF - Water N2 - Many agriculture-based economies are increasingly under stress from climate change and socio-economic pressures. The excessive exploitation of natural resources still represents the standard procedure to achieve socio-economic development. In the area of the Moulouya river basin, Morocco, natural water availability represents a key resource for all economic activities. Agriculture represents the most important sector, and frequently occurring water deficits are aggravated by climate change. On the basis of historical trends taken from CRU TS 2.1, this paper analyses the impact of climate change on the per capita water availability under inclusion of population trends. The Climatic Water Balance (CWB) shows a significant decrease for the winter period, causing adverse effects for the main agricultural season. Further, moisture losses due to increasing evapotranspiration rates indicate problems for the annual water budget and groundwater recharge. The per capita blue water availability falls below a minimum threshold of 500 m(3) per year, denoting a high regional vulnerability to increasing water scarcity assuming a no-response scenario. Regional development focusing on the water-intense sectors of agriculture and tourism appears to be at risk. Institutional capacities and policies need to address the problem, and the prompt implementation of innovative water production and efficiency measures is recommended. KW - North Africa KW - Moulouya river basin KW - climate change KW - population growth KW - regional development KW - water availability KW - water management KW - water scarcity Y1 - 2012 U6 - https://doi.org/10.3390/w4040959 SN - 2073-4441 VL - 4 IS - 4 SP - 959 EP - 982 PB - MDPI CY - Basel ER -