coherence of net primary productivity estimates keala hagmann mark harmon: carbon dynamics,...
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![Page 1: Coherence of Net Primary Productivity Estimates Keala Hagmann Mark Harmon: carbon dynamics, scalability Don Henshaw: database and people management Howard](https://reader035.vdocuments.net/reader035/viewer/2022070415/56649f295503460f94c431b0/html5/thumbnails/1.jpg)
Coherence of Net Primary Productivity EstimatesKeala Hagmann
Mark Harmon: carbon dynamics, scalabilityDon Henshaw: database and people managementHoward Bruner: reference stand data & NPPSuzanne Remillard: reference stand data & NPPGody Spycher: data manipulation
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NPPb = ∆Biomass + Mortality
Net Primary Productivity of Live Tree Boles
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Measure–ability to sequester carbon, sink or source of atmospheric carbon
Ask–how scalable are the estimates?
Why–refine estimates for carbon cycles; learn more about ecosystem
Productivity and Scalability
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Identify the spatial scale at which the parts represent the whole
Objective
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Reference Stand Layouts
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Reference Stand Descriptions
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Biomass Estimates: Plot-level
Mount Rainier Reference Stands
HJ Andrews Reference Stands
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NPP Estimates: Plot-level
Mount Rainier Reference Stands
HJ Andrews Reference Stands
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Min/Max r: Plot to Stand Correlation
Correlation Coefficient
AB08 AG05 AM16 AO03 AV02 AV06 AV14 TO04 TO11
bio r plot -0.39 -0.20 -0.75 -0.40 -0.66 -0.73 -0.81 -0.88 -0.43
bio r plot 0.75 0.92 0.96 0.64 0.92 0.96 0.99 0.88 1.00
npp r plot -0.64 -0.11 -0.90 -0.95 -0.81 -0.38 -0.67 -0.84 -0.78
npp r plot 0.92 0.97 0.98 0.95 0.97 0.99 0.95 0.98 0.87
RS01 RS03 RS21 RS22 RS23 RS27 RS28 RS29 RS30 RS31 RS34
bio r plot -0.99 -0.32 -0.60 -0.99 -0.79 -0.93 -0.75 -0.89 -0.75 -0.52 -0.58
bio r plot 0.97 0.82 0.96 0.99 0.63 0.99 0.96 0.93 0.79 0.79 0.71
npp r plot -0.88 -0.20 -0.69 -0.35 0.03 -0.48 -0.11 -0.15 0.24 -0.33 -0.95
npp r plot 0.98 0.98 0.96 0.83 0.97 1.00 0.98 0.98 0.98 0.96 0.97
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# Neg Pos Sig: Plot to Stand Correlation
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Combinations: 2, 4, 6, 8 plots
MRRS, AV14: Adjacent Heterogeneity
MRRS, TO11: Adjacent Homogeneity
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Plot-level trends
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Min/Max r: Combos to Stand Correlation
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# Neg Pos Sig: Combos to Stand Correlation
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Mount Rainier Reference Stands
Biomass & NPP: Stand-level
HJ Andrews Reference Stands
Time (Year of Measurement
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Correlate plots to each otherExtend analysis to stand level
Further statistical analyses to quantify coherence in trends from site to site
Future
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Potential not exploited
Programmer & statistician: automate analysis & interpret results
Another cross-disciplinary approach to extending comprehension of study subjects and generating insights
EcoInformatics
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Desiree Tullos, Julia Jones, Kari O’Connell and Fred Swanson for creating EISI and for hosting us.
Nicole Czarmonski and Jorge Ramirez for guidance and encouragement.
The numerous lecturers who gave of their time and shared their knowledge.
Alan Tepley for providing an opportunity for fieldwork in incredibly beautiful forests and for all that he teaches.
Thank You to:
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