Finding water scarcity amid abundance using human–natural system models

Jaeger, William K.; Amos, Adell L.; Bigelow, Daniel P.; Chang, Heejun; Conklin, David R.; Haggerty, R.; Langpap, Christian; Moore, Kathleen Dean; Mote, Philip W.; Nolin, A. W.; Plantinga, Andrew J.; Schwartz, Cynthia; Tullos, Desirèe; Turner, David P.

doi:10.1073/pnas.1706847114

Cited by 57 publications

(35 citation statements)

References 27 publications

(22 reference statements)

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“…Water is the most influential resource in ecosystems and societies in arid and semi-arid areas (Chen et al 2013;Feng et al 2016;Jaeger et al 2017;Qi et al 2017). In drylands, the spatio-temporal distribution and availability of water resources have been the major focuses of terrestrial ecosystem studies at local, regional and global levels (Groisman et al 2017;Monier et al 2017;Soja and Groisman 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of changes in precipitation on energy and water balance in a Eurasian meadow steppe

et al. 2019

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Introduction: Water such as precipitation is the most critical environment driver of ecosystem processes and functions in semi-arid regions. Frequency and intensity of drought and transient waterlogging are expected to increase in the meadow steppe in northeastern China. Using a 4-year dataset of eddy covariance flux measurements, ground measurements of biomass, phenology, and meteorological conditions, we investigated the changes in energy fluxes at multiple temporal scales and under different precipitation regimes. Results: The meadow steppe was latent heat (LE) dominated when soil water content was > 0.3 m 3 m −3 , but switched to sensible heat (H) dominated status when soil water content fell below 0.3 m 3 m −3. LE dominated the energy exchange of the meadow grasslands on a yearly basis. Intensive precipitation had a profound impact on water-energy balance that could reduce the damages of drought by elevating deep soil moisture. The influence of LE on waterlogging depended on timing, with increased LE at the beginning of growing season and decreased LE after waterlogging. Spring and summer droughts resulted in different energy partitioning between latent and sensible heat energies, with spring drought dramatically decreased the LE fraction due to the change in water. In contrast, summer drought had little impact on LE due to the sufficient water input from large precipitation events at the beginning of the growing season. Conclusions: There existed great seasonal and interannual variabilities in energy balance and partitioning in the meadow steppe over the 4-year study period, which were strongly influenced by changes in precipitation. The water loss through latent heat was more sensitive to spring drought than to summer drought, while summer drought had negligible impact on LE. Waterlogging contributed to LE by enhancing its values during and after the waterlogged periods at the beginning of the growing season in a dry year, but lowering its value after the waterlogged periods in growing season.

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Section: Introductionmentioning

confidence: 99%

Effects of changes in precipitation on energy and water balance in a Eurasian meadow steppe

et al. 2019

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“…Dam management on major rivers may provide the most important mechanism to mitigate impacts of climate change on stream temperature and hydrological regimes in the coming century. However, reservoir management will also be influenced by requirements for flood management, and public and political pressures to accommodate the competing needs for water downstream (Jaeger et al, ).…”

Section: Discussionmentioning

confidence: 99%

Using expressed behaviour of coho salmon (Oncorhynchus kisutch) to evaluate the vulnerability of upriver migrants under future hydrological regimes: Management implications and conservation planning

Flitcroft¹,

Lewis

Arisméndi

et al. 2019

Aquatic Conservation

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Globally, river systems have been extensively modified through alterations in riverscapes and flow regimes, reducing their capacity to absorb geophysical and environmental changes. In western North America and elsewhere, alterations in natural flow regimes and swimways through dams, levees, and floodplain development, work in concert with fire regime, forest management practices, as well as agriculture and urban development, to change recovery trajectories of river systems. Hydroregime scenarios for coho salmon, Oncorhynchus kisutch (Walbaum, 1792), were investigated in Washington and Oregon, USA, where long‐term records of discharge, water temperature, and upstream fish passage are available. This novel approach combines hydrological and ecological data in a single visualization, providing empirical foundations for understanding upstream behavioural movement and tolerances of native fishes. The timing of coho salmon movement with respect to temperature and discharge were compared with scenarios representing possible future hydrological conditions associated with a changing climate. This approach provides a framework for the study of future hydrological alterations in other locations, and can inform local and regional conservation planning, particularly in view of water management policy. Management implications and recommendations for action that may expand the capacity of riverscapes to absorb perturbations are discussed.

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“…Finding solutions to manage scarce water resources to meet human water needs while sustaining ecosystems has become a priority for research [1][2][3][4] and policy makers. In 2015, the United Nations (UN) adopted 17 Sustainable Development Goals (SDG), including "Ensuring access to water and sanitation for all" (SDG6) 5 .…”

Section: Background and Summarymentioning

confidence: 99%

A socio-environmental geodatabase for integrative research in the transboundary Rio Grande/Río Bravo basin

et al. 2020

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Integrative research on water resources requires a wide range of socio-environmental datasets to better understand human-water interactions and inform decision-making. However, in transboundary watersheds, integrating cross-disciplinary and multinational datasets is a daunting task due to the disparity of data sources and the inconsistencies in data format, content, resolution, and language. this paper introduces a socio-environmental geodatabase that transcends political and disciplinary boundaries in the Rio Grande/Río Bravo basin (RGB). The geodatabase aggregates 145 GIS data layers on five main themes: (i) Water & Land Governance, (ii) Hydrology, (iii) Water Use & Hydraulic Infrastructures, (iv) Socio-Economics, and (v) Biophysical Environment. Datasets were primarily collected from public open-access data sources, processed with arcGIS, and documented through the FGCD metadata standard. By synthesizing a broad array of datasets and mapping public and private water governance, we expect to advance interdisciplinary research in the RGB, provide a replicable approach to dataset compilation for transboundary watersheds, and ultimately foster transboundary collaboration for sustainable resource management.

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Finding water scarcity amid abundance using human–natural system models

Cited by 57 publications

References 27 publications

Effects of changes in precipitation on energy and water balance in a Eurasian meadow steppe

Effects of changes in precipitation on energy and water balance in a Eurasian meadow steppe

Using expressed behaviour of coho salmon (Oncorhynchus kisutch) to evaluate the vulnerability of upriver migrants under future hydrological regimes: Management implications and conservation planning

A socio-environmental geodatabase for integrative research in the transboundary Rio Grande/Río Bravo basin

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