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Table 1 Sample size (n), weight range (Min-Max; Mg ha−1), and mean in situ fine fuel loads (Mean, Mg ha−1;) within unburned (50+ years since fire) and recently burned (immediately, 9 mo, and 2 yr post burn) closed-canopy stands across the entire Spirit Hill Farm (SHF), Mississippi, USA, and the percent of these samples that fell within each fuel treatment range (Single, Double, Triple) used in the experimental burns conducted in December 2018 at a single stand at SHF to test for fuel load treatment effects on white oak and Shumard oak acorns (dry weight values: single ≤ 4.5 Mg ha−1; double = 4.5 to 7.0 Mg ha−1; triple ≥ 7.0 Mg ha−1). Fine fuel samples from across the study area were collected independently of those used in the experimental burns. Sample size for the March 2020 sampling date was only 12 because the burn unit area was smaller

From: Impacts of increasing fine fuel loads on acorn germination and early growth of oak seedlings

Collection date n Dry weight of in situ fine fuel loads (Mg ha−1) In situ samples in each fuel treatment range (%)
Min-Max Mean Single Double Triple
Unburned SHF
 March 2018 (four months after leaf fall) 20 1.28 to 9.10 4.05 68 29 3
 January 2019 (one month after leaf fall) 20 3.78 to 9.22 5.66 12 75 13
Burned SHF
 March 2018 (immediately pre burn) 20 2.11 to 7.24 4.29 55 44 2
 March 2018 (immediately post burn) 20 <0.01 to 1.85 0.00 100 0 0
 January 2019 (nine months post burn) 20 2.57 to 11.07 6.05 13 74 13
 March 2020 (two years post-burn) 12 2.32 to 4.54 3.44 90 10 0