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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.13444
|2 doi
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|a pubmed24n0876.xml
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|a (NLM)27472269
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Pourmokhtarian, Afshin
|e verfasserin
|4 aut
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| 245 |
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|a Modeled ecohydrological responses to climate change at seven small watersheds in the northeastern United States
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 20.10.2017
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|a Date Revised 02.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2016 John Wiley & Sons Ltd.
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|a A cross-site analysis was conducted on seven diverse, forested watersheds in the northeastern United States to evaluate hydrological responses (evapotranspiration, soil moisture, seasonal and annual streamflow, and water stress) to projections of future climate. We used output from four atmosphere-ocean general circulation models (AOGCMs; CCSM4, HadGEM2-CC, MIROC5, and MRI-CGCM3) included in Phase 5 of the Coupled Model Intercomparison Project, coupled with two Representative Concentration Pathways (RCP 8.5 and 4.5). The coarse resolution AOGCMs outputs were statistically downscaled using an asynchronous regional regression model to provide finer resolution future climate projections as inputs to the deterministic dynamic ecosystem model PnET-BGC. Simulation results indicated that projected warmer temperatures and longer growing seasons in the northeastern United States are anticipated to increase evapotranspiration across all sites, although invoking CO2 effects on vegetation (growth enhancement and increases in water use efficiency (WUE)) diminish this response. The model showed enhanced evapotranspiration resulted in drier growing season conditions across all sites and all scenarios in the future. Spruce-fir conifer forests have a lower optimum temperature for photosynthesis, making them more susceptible to temperature stress than more tolerant hardwood species, potentially giving hardwoods a competitive advantage in the future. However, some hardwood forests are projected to experience seasonal water stress, despite anticipated increases in precipitation, due to the higher temperatures, earlier loss of snow packs, longer growing seasons, and associated water deficits. Considering future CO2 effects on WUE in the model alleviated water stress across all sites. Modeled streamflow responses were highly variable, with some sites showing significant increases in annual water yield, while others showed decreases. This variability in streamflow responses poses a challenge to water resource management in the northeastern United States. Our analyses suggest that dominant vegetation type and soil type are important attributes in determining future hydrological responses to climate change
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|a Journal Article
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|a CMIP5
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|a climate change
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| 650 |
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|a ecohydrology
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| 650 |
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|a ecosystem modeling
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| 650 |
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|a northeastern United States
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|a water stress
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| 650 |
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|a water use efficiency
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| 650 |
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4 |
|a watershed
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| 650 |
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|a Soil
|2 NLM
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| 700 |
1 |
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|a Driscoll, Charles T
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Campbell, John L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hayhoe, Katharine
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Stoner, Anne M K
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Adams, Mary Beth
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Burns, Douglas
|e verfasserin
|4 aut
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|a Fernandez, Ivan
|e verfasserin
|4 aut
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|a Mitchell, Myron J
|e verfasserin
|4 aut
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| 700 |
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|a Shanley, James B
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 23(2017), 2 vom: 23. Feb., Seite 840-856
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
1 |
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|g volume:23
|g year:2017
|g number:2
|g day:23
|g month:02
|g pages:840-856
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|u http://dx.doi.org/10.1111/gcb.13444
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