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Related Experiment Video

Updated: Aug 9, 2025

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity

Published on: March 13, 2014

Fire modifies plant-soil feedbacks.

Christopher R Warneke¹, Stephanie G Yelenik², Lars A Brudvig¹

¹Department of Plant Biology and Program in Ecology, Evolutionary Biology, and Behavior, Michigan State University, East Lansing, Michigan, USA.

|February 16, 2023

Summary

This summary is machine-generated.

Fire weakens plant-soil feedbacks (PSFs) in Hawaiian forests, altering competitive dynamics between tree species. This study highlights how environmental factors like fire impact plant diversity and dominance through microbial interactions.

Keywords:

Acacia koa Hawaiʻi PSF Sophora chrysophylla fire koa legumes māmane plant-soil feedbacks restoration rhizobia wildfire

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Simulating Temperature in a Soil Incubation Experiment

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Published on: October 28, 2022

Area of Science:

Ecology
Plant-Soil Interactions
Microbial Ecology

Background:

Plant-soil feedbacks (PSFs) influence plant diversity but are rarely studied with environmental factors.
Fire is an increasingly prevalent environmental factor whose impact on PSFs is largely unknown.
Fire may alter microbial communities, affecting plant growth and PSFs.

Purpose of the Study:

To investigate how fire affects plant-soil feedbacks (PSFs) in two Hawaiian leguminous tree species.
To determine if fire alters the strength or direction of PSFs and their impact on plant performance.
To understand the implications of fire-altered PSFs for species dominance and competitive dynamics.

Main Methods:

Experimental study comparing plant performance in conspecific and heterospecific soils from burned and unburned sites.
Quantification of plant biomass production and nodule formation.
Analysis of pairwise plant-soil feedback effects.

Main Results:

Both species performed better in conspecific soil than heterospecific soil in unburned sites, indicating positive PSFs.
Fire significantly weakened PSFs for both species, making them nonsignificant in burned soils.
Nodule formation, crucial for legumes, was mediated by fire, affecting plant performance.

Conclusions:

Fire modifies plant-soil feedbacks by weakening legume-rhizobia symbiosis.
Fire-induced changes in PSFs may reduce species dominance reinforcement.
Environmental context, such as fire, is critical for understanding PSFs and plant community dynamics.