Potential impacts of climate change on groundwater resources – a global review

Earman, Sam; Dettinger, Michael D.

doi:10.2166/wcc.2011.034

Cited by 167 publications

(88 citation statements)

References 67 publications

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“…In mountainous regions of the western United States, snowmelt is the dominant contributor to surface runoff, water use by vegetation, and groundwater recharge (Bales et al, 2006;Earman and Dettinger, 2011). Because of their importance and vulnerability of mountain snowpacks in a warmer climate, several researchers have recently developed scenarios for changes in annual and multiyear mountain water cycles, including trends in water storage and runoff, groundwater recharge, and feedbacks with vegetation (Peterson et al, 2000;Marks et al, 2001;Lundquist et al, 2005;Maxwell and Kollet, 2008;Barnett et al, 2008;Anderson and Goulden, 2011;Trujillo et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

LiDAR measurement of seasonal snow accumulation along an elevation gradient in the southern Sierra Nevada, California

Kirchner

Bales

Molotch

et al. 2014

Hydrol. Earth Syst. Sci.

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Abstract. We present results from snow-on and snow-off airborne-scanning LiDAR measurements over a 53 km 2 area in the southern Sierra Nevada. We found that snow depth as a function of elevation increased approximately 15 cm per 100 m, until reaching an elevation of 3300 m, where depth sharply decreased at a rate of 48 cm per 100 m. Departures from the 15 cm per 100 m trend, based on 1 m elevation-band means of regression residuals, showed slightly less steep increases below 2050 m; steeper increases between 2050 and 3300 m; and less steep increases above 3300 m. Although the study area is partly forested, only measurements in open areas were used. Below approximately 2050 m elevation, ablation and rainfall are the primary causes of departure from the orographic trend. From 2050 to 3300 m, greater snow depths than predicted were found on the steeper terrain of the northwest and the less steep northeast-facing slopes, suggesting that ablation, aspect, slope and wind redistribution all play a role in local snow-depth variability. At elevations above 3300 m, orographic processes mask the effect of wind deposition when averaging over large areas. Also, terrain in this basin becomes less steep above 3300 m. This suggests a reduction in precipitation from upslope lifting and/or the exhaustion of precipitable water from ascending air masses. Our results suggest a cumulative precipitation lapse rate for the 2100-3300 m range of about 6 cm per 100 m elevation for the accumulation period of 3 December 2009 to 23 March 2010. This is a higher gradient than the widely used PRISM (Parameter-elevation Relationships on Independent Slopes Model) precipitation products, but similar to that from reconstruction of snowmelt amounts from satellite snow-cover data. Our findings provide a unique characterization of the consistent, steep average increase in precipitation with elevation in snow-dominated terrain, using high-resolution, highly accurate data and highlighs the importance of solar radiation, wind redistribution and mid-winter melt with regard to snow distribution.

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Section: Introductionmentioning

confidence: 99%

LiDAR measurement of seasonal snow accumulation along an elevation gradient in the southern Sierra Nevada, California

Kirchner

Bales

Molotch

et al. 2014

Hydrol. Earth Syst. Sci.

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“…Higher temperature will lead to an increase of potential evapotranspiration, and consequently alter infiltration, percolation, soil moisture, as well as snowfall and snowmelt. The combined effect of shorter duration, more intense rainfall, increased evapotranspiration, and increased water use will accelerate depletion of future groundwater storage and low flow in rivers (Earman & Dettinger, 2011).…”

Section: Impact Of Gcc On Water Cycle and Bmp Performancementioning

confidence: 99%

A Review and Discussion on Modeling and Assessing Agricultural Best Management Practices under Global Climate Change

Liu

Yang

Qin

et al. 2016

JSD

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Understanding the impacts of global climate change on the spatiotemporal pattern of hydrologic cycle and water resources is of major importance in highly developed watersheds all over the world. These impacts are strongly dependent on related changes in intensity and frequency of extreme climate events. Implementation of Best Management Practices (BMPs) and policy approaches at watershed and regional scales is essential for mitigating their negative impacts on soil and water conservation, and sustainable economic development. However, the uncertainty of BMP effectiveness including increasing variability of future water supply and changing magnitudes of nonpoint source pollution has to be accounted for in watershed planning and management. This paper provides a review and discussion on the impacts of global climate change on BMP's hydrologic performance, the current progress on hydrologic assessment of BMPs, as well as the existing problems and countermeasures. Research challenges and opportunities in the field of hydrologic assessment of BMPs under global climate change are also discussed in this paper.

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“…Climate change is expected to impose changes in several important environmental variables that directly influence groundwater organisms and ecosystem processes (reviewed in Klove et al 2014), including changes in water temperature, dissolved oxygen, recharge rates, altered hydrological regime, and groundwater levels, as well as groundwater quality (Earman and Dettinger 2011;Treidel et al 2012). Many subterranean species may be particularly vulnerable to impacts of climate change, because of their unique habitat requirements, endemicity, adaptations, and often limited dispersal abilities.…”

Section: Threatsmentioning

confidence: 99%

Biogeography and conservation assessment of Bactrurus groundwater amphipods (Crangonyctidae) in the central and eastern United States

Taylor¹,

Niemiller²

2016

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The subterranean amphipod genus Bactrurus (Amphipoda: Crangonyctidae) is comprised of eight species that occur in groundwater habitats in karst and glacial deposits of the central and eastern United States. We reexamine the distribution, biogeography, and conservation status of Bactrurus in light of new species distribution records and divergence time estimates in the genus from a recent molecular study. In particular, we discuss hypotheses regarding the distribution and dispersal of B. mucronatus and B. brachycaudus into previously glaciated regions of the Central Lowlands. We also conducted the first IUCN Red List conservation assessments and reassessed global NatureServe conservation ranks for each species. We identified 17 threats associated with increased extinction risk that vary in source, scope, and severity among species, with groundwater pollution being the most significant threat to all species. Our conservation assessments indicate that five of the eight species are at an elevated risk of extinction under IUCN Red List or NatureServe criteria, with one species (B. cellulanus) already extinct. However, none of the eight species are considered threatened or endangered by any state or federal agency. Significant knowledge gaps regarding the life history, ecology, and demography of each species exist. Given results of our conservation assessments and available information on threats to populations, we offer recommendations for conservation, management, and future research for each species.

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Potential impacts of climate change on groundwater resources – a global review

Cited by 167 publications

References 67 publications

LiDAR measurement of seasonal snow accumulation along an elevation gradient in the southern Sierra Nevada, California

LiDAR measurement of seasonal snow accumulation along an elevation gradient in the southern Sierra Nevada, California

A Review and Discussion on Modeling and Assessing Agricultural Best Management Practices under Global Climate Change

Biogeography and conservation assessment of Bactrurus groundwater amphipods (Crangonyctidae) in the central and eastern United States

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