Land Management Effects on Near‐Surface Soil Properties of Southeastern U.S. Coastal Plain Kandiudults

Levi, Matthew R.; Shaw, Joey N.; Wood, C. W.; Hermann, Sharon; Carter, E.A.; Feng, Yanfang

doi:10.2136/sssaj2009.0015

Cited by 17 publications

(17 citation statements)

References 50 publications

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“…Greater stratification ratio of SOC under NT than under CT has been reported in Georgia, USA [73], Virginia, USA [77], Canada [78], Brazil [79], Argentina [80], China [81], Italy [82] and Spain [83][84][85][86]. The stratification ratio of additional soil organic matter fractions has been reported for various other agricultural management comparisons in Georgia, USA [87], Canada [88], China [89] and Spain [90]. These studies provide further evidence to support the concept of stratification of SOC as an indicator of environmental quality.…”

Section: Stratification Of Soil Organic Mattermentioning

confidence: 85%

“…These studies provide further evidence to support the concept of stratification of SOC as an indicator of environmental quality. As a result of this vertical redistribution of SOC, a linkage to soil quality (i.e., nutrient cycling [73][74][75][76], surface aggregation and hydrologic function [78,89,90], organic matter decomposition [77,[79][80][81][83][84][85][86][87][88] and soil biological activity/diversity [73,82,83,86]) of the entire soil profile can be firmly established.…”

Section: Stratification Of Soil Organic Mattermentioning

confidence: 99%

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Pursuing robust agroecosystem functioning through effective soil organic carbon management

Franzluebbers¹

2013

Carbon Management

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Section: Stratification Of Soil Organic Mattermentioning

confidence: 85%

Section: Stratification Of Soil Organic Mattermentioning

confidence: 99%

Pursuing robust agroecosystem functioning through effective soil organic carbon management

Franzluebbers¹

2013

Carbon Management

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“…This 80 ha site, on moderately dissected terrain 25-50 m above sea level, is characterized by a growing season of 10-11 months and average precipitation of c. 1350 mm. Surficial soils are Pliocene-aged, acidic, fine-textured sands with A horizons 50-100 cm deep over a clay hardpan (Typic and Arenic Kandiudults; Carr et al, 2009;Levi et al, 2010). From the early 1800s, the site was annually-biennially burned with low-intensity fires (Platt et al, 1988), resulting in an open savanna landscape with discontinuous canopy of pines (P. palustris) and shrub seedlings (Quercus spp.…”

Section: Study Sitementioning

confidence: 99%

Frequent fire reorganizes fungal communities and slows decomposition across a heterogeneous pine savanna landscape

et al. 2019

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Summary Pyrogenic savannas with a tree–grassland ‘matrix’ experience frequent fires (i.e. every 1–3 yr). Aboveground responses to frequent fires have been well studied, but responses of fungal litter decomposers, which directly affect fuels, remain poorly known. We hypothesized that each fire reorganizes belowground communities and slows litter decomposition, thereby influencing savanna fuel dynamics. In a pine savanna, we established patches near and away from pines that were either burned or unburned in that year. Within patches, we assessed fungal communities and microbial decomposition of newly deposited litter. Soil variables and plant communities were also assessed as proximate drivers of fungal communities. Fungal communities, but not soil variables or vegetation, differed substantially between burned and unburned patches. Saprotrophic fungi dominated in unburned patches but decreased in richness and relative abundance after fire. Differences in fungal communities with fire were greater in litter than in soils, but unaffected by pine proximity. Litter decomposed more slowly in burned than in unburned patches. Fires drive shifts between fire‐adapted and sensitive fungal taxa in pine savannas. Slower fuel decomposition in accordance with saprotroph declines should enhance fuel accumulation and could impact future fire characteristics. Thus, fire reorganization of fungal communities may enhance persistence of these fire‐adapted ecosystems.

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“…The site is situated on moderately dissected terrain 25 to 50 m above sea level in the headwaters of the St. Marks River in the Red Hills region of northern Florida-southern Georgia. Soils at the site are loamy-sand Ultisols (Typic and Arenic Kandiudults) [38,39] with clay-rich sub-horizons formed in Pliocene-aged sands of the Miccosukee Formation. This site contains 85 ha of exemplary old-growth pine savanna [13,14,40] protected by a conservation easement held by Tall Timbers Land Conservancy and managed during the past century for northern bobwhite (quail) hunting and conservation.…”

Section: Study Area and Patches Of Longleaf Pinementioning

confidence: 99%

Longleaf Pine Patch Dynamics Influence Ground-Layer Vegetation in Old-Growth Pine Savanna

Mugnani

Robertson

Miller

et al. 2019

Forests

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Old-growth longleaf pine savannas are characterized by diverse ground-layer plant communities comprised of graminoids, forbs, and woody plants. These communities co-exist with variable-aged patches containing similar-aged trees of longleaf pine (Pinus palustris Mill.). We tested the conceptual model that physical conditions related to the cycle of longleaf pine regeneration (stand structure, soil attributes, fire effects, and light) influence plant species’ composition and spatial heterogeneity of ground-layer vegetation. We used a chrono-sequence approach in which local patches represented six stages of the regeneration cycle, from open areas without trees (gaps) to trees several centuries old, based on a 40-year population study and increment cores of trees. We measured soil characteristics, patch stand structure, fuel loads and consumption during fires, plant productivity, and ground-layer plant species composition. Patch characteristics (e.g., tree density, basal diameter, soil carbon, and fire heat release) indicated a cyclical pattern that corresponded to the establishment, growth, and mortality of trees over a period of approximately three centuries. We found that plants in the families Fabaceae and Asteraceae and certain genera were significantly associated with a particular patch stage or ranges of patch stages, presumably responding to changes in physical conditions of patches over time. However, whole-community-level analyses did not indicate associations between the patch stage and distinct plant communities. Our study indicates that changes in composition and the structure of pine patches contribute to patterns in spatial and temporal heterogeneity in physical characteristics, fire regimes, and species composition of the ground-layer vegetation in old-growth pine savanna.

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Land Management Effects on Near‐Surface Soil Properties of Southeastern U.S. Coastal Plain Kandiudults

Cited by 17 publications

References 50 publications

Pursuing robust agroecosystem functioning through effective soil organic carbon management

Pursuing robust agroecosystem functioning through effective soil organic carbon management

Frequent fire reorganizes fungal communities and slows decomposition across a heterogeneous pine savanna landscape

Longleaf Pine Patch Dynamics Influence Ground-Layer Vegetation in Old-Growth Pine Savanna

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