Inoculation with native grassland soils improves native plant species germination in highly disturbed soil

Abstract Background Grasslands are globally imperiled, facing continued threats from anthropogenic disturbances. Seeding remains a common grassland restoration method, and yet, is typically met with limited success, partially because soils of degraded systems inhibit the germination of native specie...

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Main Authors: Eric B. Duell, Karen R. Hickman, Gail W. T. Wilson
Format: Article
Language:English
Published: Wiley 2022-06-01
Series:Grassland Research
Subjects:
Online Access:https://doi.org/10.1002/glr2.12018
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author Eric B. Duell
Karen R. Hickman
Gail W. T. Wilson
author_facet Eric B. Duell
Karen R. Hickman
Gail W. T. Wilson
author_sort Eric B. Duell
collection DOAJ
description Abstract Background Grasslands are globally imperiled, facing continued threats from anthropogenic disturbances. Seeding remains a common grassland restoration method, and yet, is typically met with limited success, partially because soils of degraded systems inhibit the germination of native species. Methods We assessed the germination success of 16 native grassland species sown in soils collected from a degraded grassland converted into a nonnative warm‐season perennial grass, Bothriochloa ischaemum, and areas previously subjected to the eradication of this nonnative species. Our objectives were as follows: (1) determine native seed germination in soils collected from B. ischaemum or eradication control sites, compared to germination in native grassland soil, and (2) assess if native soil inoculation improves germination, compared to germination in degraded soils without inoculation. Results Germination of native species was exceedingly low when seeded into soil dominated by B. ischaemum, or in soil previously treated with combinations of herbicide and prescribed fire, relative to native grassland control. However, amendments with native grassland soil resulted in germination equivalent to native grasslands, alleviating the negative influences of degraded soils. Conclusions Our results highlight the role of native soil in improving the germination of desirable plant species following intensive management and soil degradation. Our research may improve restoration outcomes for managers focused on the conservation and restoration of grasslands.
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spelling doaj.art-79963cdaac9949ecbfd0af860c4747392022-12-22T03:35:42ZengWileyGrassland Research2097-051X2770-17432022-06-0112758310.1002/glr2.12018Inoculation with native grassland soils improves native plant species germination in highly disturbed soilEric B. Duell0Karen R. Hickman1Gail W. T. Wilson2Department of Natural Resource Ecology and Management Oklahoma State University Stillwater Oklahoma USADepartment of Natural Resource Ecology and Management Oklahoma State University Stillwater Oklahoma USADepartment of Natural Resource Ecology and Management Oklahoma State University Stillwater Oklahoma USAAbstract Background Grasslands are globally imperiled, facing continued threats from anthropogenic disturbances. Seeding remains a common grassland restoration method, and yet, is typically met with limited success, partially because soils of degraded systems inhibit the germination of native species. Methods We assessed the germination success of 16 native grassland species sown in soils collected from a degraded grassland converted into a nonnative warm‐season perennial grass, Bothriochloa ischaemum, and areas previously subjected to the eradication of this nonnative species. Our objectives were as follows: (1) determine native seed germination in soils collected from B. ischaemum or eradication control sites, compared to germination in native grassland soil, and (2) assess if native soil inoculation improves germination, compared to germination in degraded soils without inoculation. Results Germination of native species was exceedingly low when seeded into soil dominated by B. ischaemum, or in soil previously treated with combinations of herbicide and prescribed fire, relative to native grassland control. However, amendments with native grassland soil resulted in germination equivalent to native grasslands, alleviating the negative influences of degraded soils. Conclusions Our results highlight the role of native soil in improving the germination of desirable plant species following intensive management and soil degradation. Our research may improve restoration outcomes for managers focused on the conservation and restoration of grasslands.https://doi.org/10.1002/glr2.12018Bothriochloa ischaemuminvasive speciesrestorationsoil inoculation
spellingShingle Eric B. Duell
Karen R. Hickman
Gail W. T. Wilson
Inoculation with native grassland soils improves native plant species germination in highly disturbed soil
Grassland Research
Bothriochloa ischaemum
invasive species
restoration
soil inoculation
title Inoculation with native grassland soils improves native plant species germination in highly disturbed soil
title_full Inoculation with native grassland soils improves native plant species germination in highly disturbed soil
title_fullStr Inoculation with native grassland soils improves native plant species germination in highly disturbed soil
title_full_unstemmed Inoculation with native grassland soils improves native plant species germination in highly disturbed soil
title_short Inoculation with native grassland soils improves native plant species germination in highly disturbed soil
title_sort inoculation with native grassland soils improves native plant species germination in highly disturbed soil
topic Bothriochloa ischaemum
invasive species
restoration
soil inoculation
url https://doi.org/10.1002/glr2.12018
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AT karenrhickman inoculationwithnativegrasslandsoilsimprovesnativeplantspeciesgerminationinhighlydisturbedsoil
AT gailwtwilson inoculationwithnativegrasslandsoilsimprovesnativeplantspeciesgerminationinhighlydisturbedsoil