Effects of Phragmites invasion on soil microbial activity and structure in a brackish marsh

Keunyea Song, Jiae Lee, Chang Jun Cha, Hojeong Kang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Background and aims: The spread of invasive plants in wetlands associated with human activity has become a serious environmental problem because of the negative effects of these species on biodiversity and biogeochemistry in ecosystems. Unlike their impacts on aboveground biodiversity, the responses of soil microbial communities and related soil characteristics to invasive plants are largely unknown. In this study, we assessed the structural and functional responses of soil microorganisms and belowground biogeochemistry to the invasion of Phragemites australis, which has heavily invaded in wetland areas globally, in brackish marsh areas in Korea. Methods: We measured soil biogeochemical characteristics including extracellular enzyme activities and microbial community structure (t-RFLP) in the marsh, both undisturbed and invaded areas over a year period. Results: We found higher extracellular enzyme activity in invaded areas compared to the undisturbed region dominated by the native species Scirpus planiculmis, and this response was profound during the growing season. Fungal and bacterial community structure, analyzed by terminal-restriction fragment length polymorphism, indicated that invasion by Phragmites had little effect on these communities. However, significantly higher microbial diversity was found in intermediately invaded areas in which Scirpus and Phragmites were co-dominant. Conclusions: This result suggests that microbial diversity was affected by plant diversity, rather than invasion by or presence of a particular species. Our results suggest that physicochemical conditions related to dominant plant species alter microbial activity, while plant diversity is a more important regulator of microbial community structure and diversity.

Original languageEnglish
Pages (from-to)45-56
Number of pages12
JournalPlant and Soil
Volume392
Issue number1-2
DOIs
Publication statusPublished - 2015 Nov 28

Fingerprint

Phragmites
microbial activity
marshes
marsh
microbial communities
microbial community
Scirpus
community structure
biogeochemistry
enzyme activity
soil
restriction fragment length polymorphism
wetland
biodiversity
wetland plants
structural response
functional response
fungal communities
soil microorganism
soil microorganisms

All Science Journal Classification (ASJC) codes

  • Soil Science
  • Plant Science

Cite this

Song, Keunyea ; Lee, Jiae ; Cha, Chang Jun ; Kang, Hojeong. / Effects of Phragmites invasion on soil microbial activity and structure in a brackish marsh. In: Plant and Soil. 2015 ; Vol. 392, No. 1-2. pp. 45-56.
@article{2e9b0699414c4e34af9b05681999bc33,
title = "Effects of Phragmites invasion on soil microbial activity and structure in a brackish marsh",
abstract = "Background and aims: The spread of invasive plants in wetlands associated with human activity has become a serious environmental problem because of the negative effects of these species on biodiversity and biogeochemistry in ecosystems. Unlike their impacts on aboveground biodiversity, the responses of soil microbial communities and related soil characteristics to invasive plants are largely unknown. In this study, we assessed the structural and functional responses of soil microorganisms and belowground biogeochemistry to the invasion of Phragemites australis, which has heavily invaded in wetland areas globally, in brackish marsh areas in Korea. Methods: We measured soil biogeochemical characteristics including extracellular enzyme activities and microbial community structure (t-RFLP) in the marsh, both undisturbed and invaded areas over a year period. Results: We found higher extracellular enzyme activity in invaded areas compared to the undisturbed region dominated by the native species Scirpus planiculmis, and this response was profound during the growing season. Fungal and bacterial community structure, analyzed by terminal-restriction fragment length polymorphism, indicated that invasion by Phragmites had little effect on these communities. However, significantly higher microbial diversity was found in intermediately invaded areas in which Scirpus and Phragmites were co-dominant. Conclusions: This result suggests that microbial diversity was affected by plant diversity, rather than invasion by or presence of a particular species. Our results suggest that physicochemical conditions related to dominant plant species alter microbial activity, while plant diversity is a more important regulator of microbial community structure and diversity.",
author = "Keunyea Song and Jiae Lee and Cha, {Chang Jun} and Hojeong Kang",
year = "2015",
month = "11",
day = "28",
doi = "10.1007/s11104-014-2339-7",
language = "English",
volume = "392",
pages = "45--56",
journal = "Plant and Soil",
issn = "0032-079X",
publisher = "Springer Netherlands",
number = "1-2",

}

Effects of Phragmites invasion on soil microbial activity and structure in a brackish marsh. / Song, Keunyea; Lee, Jiae; Cha, Chang Jun; Kang, Hojeong.

In: Plant and Soil, Vol. 392, No. 1-2, 28.11.2015, p. 45-56.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of Phragmites invasion on soil microbial activity and structure in a brackish marsh

AU - Song, Keunyea

AU - Lee, Jiae

AU - Cha, Chang Jun

AU - Kang, Hojeong

PY - 2015/11/28

Y1 - 2015/11/28

N2 - Background and aims: The spread of invasive plants in wetlands associated with human activity has become a serious environmental problem because of the negative effects of these species on biodiversity and biogeochemistry in ecosystems. Unlike their impacts on aboveground biodiversity, the responses of soil microbial communities and related soil characteristics to invasive plants are largely unknown. In this study, we assessed the structural and functional responses of soil microorganisms and belowground biogeochemistry to the invasion of Phragemites australis, which has heavily invaded in wetland areas globally, in brackish marsh areas in Korea. Methods: We measured soil biogeochemical characteristics including extracellular enzyme activities and microbial community structure (t-RFLP) in the marsh, both undisturbed and invaded areas over a year period. Results: We found higher extracellular enzyme activity in invaded areas compared to the undisturbed region dominated by the native species Scirpus planiculmis, and this response was profound during the growing season. Fungal and bacterial community structure, analyzed by terminal-restriction fragment length polymorphism, indicated that invasion by Phragmites had little effect on these communities. However, significantly higher microbial diversity was found in intermediately invaded areas in which Scirpus and Phragmites were co-dominant. Conclusions: This result suggests that microbial diversity was affected by plant diversity, rather than invasion by or presence of a particular species. Our results suggest that physicochemical conditions related to dominant plant species alter microbial activity, while plant diversity is a more important regulator of microbial community structure and diversity.

AB - Background and aims: The spread of invasive plants in wetlands associated with human activity has become a serious environmental problem because of the negative effects of these species on biodiversity and biogeochemistry in ecosystems. Unlike their impacts on aboveground biodiversity, the responses of soil microbial communities and related soil characteristics to invasive plants are largely unknown. In this study, we assessed the structural and functional responses of soil microorganisms and belowground biogeochemistry to the invasion of Phragemites australis, which has heavily invaded in wetland areas globally, in brackish marsh areas in Korea. Methods: We measured soil biogeochemical characteristics including extracellular enzyme activities and microbial community structure (t-RFLP) in the marsh, both undisturbed and invaded areas over a year period. Results: We found higher extracellular enzyme activity in invaded areas compared to the undisturbed region dominated by the native species Scirpus planiculmis, and this response was profound during the growing season. Fungal and bacterial community structure, analyzed by terminal-restriction fragment length polymorphism, indicated that invasion by Phragmites had little effect on these communities. However, significantly higher microbial diversity was found in intermediately invaded areas in which Scirpus and Phragmites were co-dominant. Conclusions: This result suggests that microbial diversity was affected by plant diversity, rather than invasion by or presence of a particular species. Our results suggest that physicochemical conditions related to dominant plant species alter microbial activity, while plant diversity is a more important regulator of microbial community structure and diversity.

UR - http://www.scopus.com/inward/record.url?scp=84929959154&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84929959154&partnerID=8YFLogxK

U2 - 10.1007/s11104-014-2339-7

DO - 10.1007/s11104-014-2339-7

M3 - Article

VL - 392

SP - 45

EP - 56

JO - Plant and Soil

JF - Plant and Soil

SN - 0032-079X

IS - 1-2

ER -