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Table 2 Correlations of environmental factors with non-metric dimensional scaling axes (Fig. 10)

From: Boreal forest vegetation and fuel conditions 12 years after the 2004 Taylor Complex fires in Alaska, USA

Variable

Description

NMDS1

NMDS2

R2

P-value

dNBR

Continuous burn severity index

0.70571

–0.70850

0.2274

0.030*

Elevation

Meters

–0.48782

–0.87294

0.2772

0.007**

TRASP

Aspect (transformed)

0.83260

0.55388

0.2341

0.033*

ForestType

Spruce, hardwood, or mixed dominant trees

0.97347

0.22881

0.1033

0.217

TotalSPH

Total tree stems ha–1

0.75575

0.65486

0.0326

0.633

LiveSPH

Live tree stems ha–1

–0.27365

0.96183

0.2014

0.032*

DeadBA

Basal area of standing dead trees (m2 ha–1)

0.80759

–0.58974

0.1813

0.051

Canopy

Canopy cover (%)

0.04618

0.99893

0.1370

0.123

Shrub

Tall shrub cover (%)

0.00888

–0.99996

0.0276

0.679

F1000hr

1000-hour fuel load (kg m–2)

0.90617

0.42291

0.4832

0.001***

F100hr

100-hour fuel load (kg m–2)

0.99832

–0.05795

0.3884

0.002**

F10hr

10-hour fuel load (kg m–2)

0.98490

–0.17311

0.2996

0.006**

F1hr

1-hour fuel load (kg m–2)

0.98683

0.16173

0.2589

0.014*

Moss

Depth to duff (mm)

–0.99860

0.05298

0.4701

0.001***

Duff

Depth to mineral soil (mm)

–0.88372

0.46801

0.3624

0.004**

  1. Values in NMDS1 and NMDS2 (non-metric multidimensional scaling axis 1 and axis 2) are the direction cosines (i.e., the coordinates in ordination space for the head of the plotted vector arrow). R2 correlations and P-values calculated based on permutation test
  2. Significance of P-value indicated as: *** < 0.001, ** < 0.01, * < 0.05, . < 0.1