Experimental spruce regeneration as a function of scarification and the interaction between burn status and seed addition.

• Main Authors: Xanthe J. Walker (3715783), Brain K. Howard (11619743), Mélanie Jean (3715789), Jill F. Johnstone (8027336), Carl Roland (6504848), Brendan M. Rogers (9184067), Edward A. G. Schuur (2663494), Kylen K. Solvik (11619746), Michelle C. Mack (8949893)
• Format: Still Image
• Language: unknown
• Published: 2021
• Subjects: Cell Biology; Molecular Biology; Evolutionary Biology; Ecology; Sociology; Developmental Biology; Plant Biology; Environmental Sciences not elsewhere classified; Biological Sciences not elsewhere classified; understory vegetation composition; occur without increases; drier landscape positions; denali national park; active layer thickness; 6 ± 4; 18 ± 1; density spruce stands; seed rain observations; extensive 2013 wildfire; fire tree regeneration; conifer tree recruitment; seeding experiment indicate; div >< p; 13 kg c; fire conifer density; assessed wildfire severity; induced forest infilling; increased alt post; increased density; seeding experiment; conifer trees; recruitment potential; alt ); wildfire throughout; wildfire severity; wildfire frequency; seed availability; organic soil; north slope; make predictions; increasing throughout; higher post; global carbon; future flammability; ecosystem structure; central alaska; c emissions; burn depth; also located; almost 95; alaska range; 5 cm; Alaska
• Online Access: https://doi.org/10.1371/journal.pone.0258558.g010

Squares and error bars represent model fit and 95% confidence intervals from a generalized linear mixed effect model with a type I negative binomial distribution and random effects of sampling year (2 levels) crossed with grid (2 levels), plot (12 levels) nested within grid, and block (5 levels) nested within plot and grid. Points represent raw data. Note the break in Y-axis for scarification treatment and difference in Y-axes between panels. See Table 2 for model results.