Data from: Low photosynthesis of treeline white spruce is associated with limited soil nitrogen availability in the Western Brooks Range, Alaska

 

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Title Ion Exchange Membranes
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Description Estimates of nutrient availability from ion exchange membranes installed on June 28, 2011 and retrieved on August 9, 2011 in eight plots at each site. Two cation and two anion membranes were installed in each plot and extracted together.
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Title Growing Season Microclimates
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Description Hourly measurements of air temperature, humidity, photosynthetically active radiation, rain, soil temperature and soil water content at each of the sites between early June and late September of the 2010 and 2011 growing seasons.
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Title Needle Gas Exchange
Downloaded 33 times
Description Measurements of light-saturated net photosynthesis, dark respiration and stomatal conductance made on approximately one-week intervals during the 2010 and 2011 growing seasons in three habitat types.
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Title Needle N, 15N and Photosynthesis
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Description Measurements of needle nitrogen concentration, needle 15N and needle net photosynthesis on the final sampling date in each of the habitats during late August of 2010 and 2011.
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Title Seasonal Needle N and 13C
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Description Measurements of needle N concentration and needle 13C made on approximately weekly intervals on 8 supplementary trees in each habitat during the 2011 growing season.
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Title Fertilizer Branch Extension Growth
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Description Measurements of annual branch extension growth made in 2007 and 2008 on 15 control trees and 15 trees that were fertilized with N, P and K adjacent to the treeline site in September of 2006, 2007 and 2008.
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When using this data, please cite the original publication:

McNown RW, Sullivan PF (2013) Low photosynthesis of treeline white spruce is associated with limited soil nitrogen availability in the Western Brooks Range, Alaska. Functional Ecology 27(3): 672-683. http://dx.doi.org/10.1111/1365-2435.12082

Additionally, please cite the Dryad data package:

McNown RW, Sullivan PF (2013) Data from: Low photosynthesis of treeline white spruce is associated with limited soil nitrogen availability in the Western Brooks Range, Alaska. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.s5c8k
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