Neighborhood-Scale Analyses of Non-additive Species Effects on Cation Concentrations in Forest Soils

Bigelow, Seth W.; Canham, Charles D.

doi:10.1007/s10021-017-0116-1

Cited by 10 publications

(3 citation statements)

References 34 publications

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“…The results of our study suggest that retention or recruitment of hardwood stems in longleaf pine woodlands, while maintaining frequent prescribed fire, may have benefits beyond wildlife habitat (Hiers et al, 2014). Hardwood trees may decrease competition among pines, possibly via increasing soil nitrogen mineralization and cation availability through litter turnover (Bigelow & Canham, 2017; Masuda et al, 2022). Our results suggested that reduced competition only occurred when BA of longleaf pine was >10 m 2 ha −1 .…”

Section: Discussionmentioning

confidence: 99%

Hardwoods influence effect of climate and intraspecific competition on growth of woodland longleaf pine trees

et al. 2023

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Section: Discussionmentioning

confidence: 99%

Hardwoods influence effect of climate and intraspecific competition on growth of woodland longleaf pine trees

et al. 2023

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“…To evaluate the possibility of non-additive interactions among tree guilds, we introduced models with antagonistic or synergistic terms (Finzi and Canham, 1998;Bigelow and Canham, 2017). The antagonistic term accounts for the effect of antagonism among tree guilds on the additive term (Holling type III or negative exponential).…”

Section: Analysis Of Overstory Tree Neighborhood Effects On Fredmentioning

confidence: 99%

“…There have been many findings of non-additive effects on metrics such as spread rate, flame height, and flame duration (de Magalhães and Schwilk, 2012;Blauw et al, 2015;Della Rocca et al, 2018;Zhao et al, 2019;Gormley et al, 2020), but investigations/findings of non-additivity with regard to fundamental physical factors that cause fire effects (e.g., heat energy release) have been fewer (de Magalhães and Schwilk, 2012;Della Rocca et al, 2018). Non-additivity can be important in forest ecosystem science because when it occurs, area-based rates of an ecosystem process (e.g., nutrient cycling, energy release from fire) will not simply equal the mean value predicted from all species present but will be influenced by spatial arrangement of overlapping circles of influence of neighboring trees (Canham and Uriarte, 2006;Bigelow and Canham, 2017). Individual longleaf pine trees' effects on prescribed fire air temperatures and residence time have been modeled as circles of influence (Bigelow and Whelan, 2019).…”

Section: Introductionmentioning

confidence: 99%

Overstory Longleaf Pines and Hardwoods Create Diverse Patterns of Energy Release and Fire Effects During Prescribed Fire

Whelan

Bigelow

O’Brien

2021

Front. For. Glob. Change

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Litter from pine trees in open woodlands is an important fuel for surface fires, but litter from hardwood species may quell fire behavior. Lower intensity fires favor hardwood over longleaf pine regeneration, and while overstory hardwoods are important sources of food and shelter for many wildlife species, too many could result in canopy closure and a loss of ground layer diversity. Although some researchers have found synergies in fire effects when leaves of different species are combined, field tests of effects of tree guild diversity on fire behavior are lacking from the literature. We used neighborhood modeling to understand how diverse overstory trees in longleaf pine forests affect fire radiative energy density (FRED), and to determine the effect on top-kill of shrub-form hardwood trees. We measured the effects of three guilds of overstory trees (longleaf pine, upland oaks, and mesic oaks) on FRED, and related FRED to post-fire damage in four guilds of understory hardwoods (sandhill oaks, upland oaks, mesic oaks, and fleshy-fruited hardwoods). We found that FRED increased 33–56% near overstory longleaf pine but decreased 23–37% near overstory mesic oaks. Additive models of FRED performed well and no synergies or antagonisms were present. Seventy percent of stems of understory hardwoods survived fire with energy release typical of dormant-season fires in canopy gaps and near overstory mesic oaks. We also found that among understory trees >2 m tall, upland and sandhill oaks were more likely than mesic oaks or fleshy-fruited hardwoods to avoid top-kill. We conclude that neighborhood models provide a method to predict longleaf pine forest structure and composition that allows for the ecological benefits of overstory hardwoods while maintaining ground-layer diversity. To maintain hardwood control, fire practitioners may need to select fire weather conditions to increase fire behavior especially during dormant-season burns.

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Nutrient supply at the local tree level in mixed forests of sessile oak and beech

et al. 2018

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Neighborhood-Scale Analyses of Non-additive Species Effects on Cation Concentrations in Forest Soils

Cited by 10 publications

References 34 publications

Hardwoods influence effect of climate and intraspecific competition on growth of woodland longleaf pine trees

Hardwoods influence effect of climate and intraspecific competition on growth of woodland longleaf pine trees

Overstory Longleaf Pines and Hardwoods Create Diverse Patterns of Energy Release and Fire Effects During Prescribed Fire

Nutrient supply at the local tree level in mixed forests of sessile oak and beech

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