Impacts of Global Environmental Changes on Water Availability and Quality

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water Resources Management, Policy and Governance".

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 2815

Special Issue Editors


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Guest Editor
Agricultural and Biological Engineering Department, Tropical Research and Education Center, University of Florida, Homestead, FL, USA
Interests: water resources engineering; irrigation; hydrology; water quality; evapotranspiration modeling; smart irrigation technologies
Spatial Sciences Laboratory in the Department of Ecosystem Sciences and Management, Texas A&M University, College Station, TX 77845, USA
Interests: hydrology; agriculture; water management; climate change
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Special Issue Information

Dear Colleagues,

As population growth continues, pressure on resource availability and quality mounts, which is a threat to freshwater resources and environmental sustainability. Such presources will cause resource scarcity and ecosystem fragility. This necessitates a better understanding of the water resource issues and testing, evaluating and implementing sustainable management practices at different scales to achieve water quantity and quality goals.

Therefore, this Special Issue encourages scientists to submit their research on basic and applied research that covers broader topics in the areas of water resources, irrigation, hydrology, agricultural water management, soil and water conservation, climate change, landuse land cover change and water quantity and quality at different scales.

Dr. Haimanote Bayabil
Dr. Yihun Dile
Guest Editors

Manuscript Submission Information

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Keywords

  • irrigation
  • hydrology
  • agricultural water management
  • soil and water conservation
  • climate change
  • land-use
  • land cover change

Published Papers (1 paper)

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Research

25 pages, 6246 KiB  
Article
Trends and Climate Elasticity of Streamflow in South-Eastern Brazil Basins
by Karinne Deusdará-Leal, Guilherme Samprogna Mohor, Luz Adriana Cuartas, Marcelo E. Seluchi, Jose A. Marengo, Rong Zhang, Elisangela Broedel, Diogo de Jesus Amore, Regina C. S. Alvalá, Ana Paula M. A. Cunha and José A. C. Gonçalves
Water 2022, 14(14), 2245; https://0-doi-org.brum.beds.ac.uk/10.3390/w14142245 - 17 Jul 2022
Cited by 2 | Viewed by 2372
Abstract
Trends in streamflow, rainfall and potential evapotranspiration (PET) time series, from 1970 to 2017, were assessed for five important hydrological basins in Southeastern Brazil. The concept of elasticity was also used to assess the streamflow sensitivity to changes in climate variables, for annual [...] Read more.
Trends in streamflow, rainfall and potential evapotranspiration (PET) time series, from 1970 to 2017, were assessed for five important hydrological basins in Southeastern Brazil. The concept of elasticity was also used to assess the streamflow sensitivity to changes in climate variables, for annual data and 5-, 10- and 20-year moving averages. Significant negative trends in streamflow and rainfall and significant increasing trend in PET were detected. For annual analysis, elasticity revealed that 1% decrease in rainfall resulted in 1.21–2.19% decrease in streamflow, while 1% increase in PET induced different reductions percentages in streamflow, ranging from 2.45% to 9.67%. When both PET and rainfall were computed to calculate the elasticity, results were positive for some basins. Elasticity analysis considering 20-year moving averages revealed that impacts on the streamflow were cumulative: 1% decrease in rainfall resulted in 1.83–4.75% decrease in streamflow, while 1% increase in PET induced 3.47–28.3% decrease in streamflow. This different temporal response may be associated with the hydrological memory of the basins. Streamflow appears to be more sensitive in less rainy basins. This study provides useful information to support strategic government decisions, especially when the security of water resources and drought mitigation are considered in face of climate change. Full article
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