The effect of prescribed fire on Biscogniauxia infection and δ13C in an upland oak-pine forest

Freeman, Alissa J.; Hammond, William P.; Dee, Justin R.; Cobb, Richard C.; Marek, Stephen M.; Adams, Henry D.

doi:10.1016/j.foreco.2019.117525

Cited by 4 publications

(1 citation statement)

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“…Disease‐caused mortality occurred mostly in Quercus species and Gleditsia triacanthos in our study (Figure 3a). Stressed and dying Quercus trees have been found to be attacked by Biscogniauxia fungi (Bendixsen et al, 2015; Freeman et al, 2019; Nugent et al, 2005), while G . triacanthos is known to be impacted by several fungal diseases (Bedker & Wingfield, 1983; Crowe et al, 1982).…”

Section: Discussionmentioning

confidence: 99%

Fire, insect and disease‐caused tree mortalities increased in forests of greater structural diversity during drought

Zhai

Coyle

et al. 2022

Journal of Ecology

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1. Structural diversity is an emerging dimension of biodiversity that accounts for size variations in organs among individuals in a community. Previous studies show significant effects of structural diversity on forest growth, but its effects on forest mortality are not known, particularly at a large scale.2. To address this knowledge gap, we quantified structural diversity using stem structural diversity (SSD) based on both tree diameter and height. We obtained U.S. Forest Service Forest Inventory and Analysis (FIA) data from over 2400 plots across southcentral U.S. forests that have suffered a recent drought. Using data from multiple sampling times, we calculated SSD and compared the relative importance of SSD, species diversity, functional diversity and other stand attributes in determining tree mortalities caused by fire, insects and diseases. We also used FIRETEC, a physics-based fire model, to test the effect of SSD on canopy consumption by fire.3. Our results showed that (1) SSD was positively associated with tree mortalities caused by all three disturbances; (2) species richness was negatively associated with insect-and disease-caused mortalities; (3) functional diversity was negatively associated with fire-and disease-caused mortalities and (4) more phylogenetically related species had more similar mortality rates by insect and disease but not fire. Moreover, the FIRETEC model showed increasing canopy consumption by fire in stands with greater SSD.4. Together, the different tree mortalities during drought associated with SSD more consistently than the other biodiversity metrics were evaluated. Synthesis.Our results suggest that SSD could be considered in modelling forest dynamics and planning management to sustain forest health under disturbances. K E Y W O R D Sforest health, plant population and community dynamics, plant-climate interactions, plantherbivore interactions, plant-pathogen interactions, stand structure, tree mortalityThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Discussionmentioning

confidence: 99%

Fire, insect and disease‐caused tree mortalities increased in forests of greater structural diversity during drought

Zhai

Coyle

et al. 2022

Journal of Ecology

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The Intertwined Problems of Wildfire, Forest Disease, and Climate Change Interactions

Cobb

2022

Curr Forestry Rep

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Radial growth responses of post oak (Quercus stellata) to climate variability and management in southeastern Oklahoma, USA

et al. 2022

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We investigated radial growth of post oak (Quercus stellata) growing in a range of stand structures (forest to savanna) created in 1984 by different harvesting and thinning treatments followed by different prescribed fire intervals. We related ring width index (RWI) to monthly and seasonal climate variables and time since fire to assess impacts of climate variability and interactions with management on radial growth. RWI of all treatments was positively correlated to minimum daily temperature the previous September and precipitation late spring/early summer the current-year, and negatively correlated to maximum daily temperatures and drought index late spring/early summer. June weather was most strongly correlated in four of five treatments. While stand structure affected absolute diameter growth, RWI of savanna and forest stands responded similarly to climate variability, and low intensity prescribed fire did not influence RWI. On average, 100 mm reduction in June precipitation decreased RWI by 8%, 1oC increase in previous-year September daily minimum temperature increased RWI by 3.5%, and 1oC increase in June maximum daily temperature decreased RWI by 3.7%. Therefore, negative effects of drought and warmer spring/summer temperatures may be reduced by longer growing seasons under warmer climate scenarios. However, management did not appear to influence RWI.

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The effect of prescribed fire on Biscogniauxia infection and δ13C in an upland oak-pine forest

Cited by 4 publications

References 46 publications

Fire, insect and disease‐caused tree mortalities increased in forests of greater structural diversity during drought

Fire, insect and disease‐caused tree mortalities increased in forests of greater structural diversity during drought

The Intertwined Problems of Wildfire, Forest Disease, and Climate Change Interactions

Radial growth responses of post oak (Quercus stellata) to climate variability and management in southeastern Oklahoma, USA

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