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Landscape and Ecological Engineering

, Volume 8, Issue 2, pp 189–196 | Cite as

Response of soil microbial communities to changes in a forest ecosystem brought about by pine wilt disease

  • Jhonamie A. Mabuhay
  • Nobukazu NakagoshiEmail author
Original Paper

Abstract

Japan has suffered a lot from forestry losses due to pine wilt disease caused by pinewood nematode infestations. Studies were conducted regarding its causative agent and the effects of natural vegetation succession after pine wilt disease, but its effects on microorganisms were not given equal attention. This study determined the effects of pine wilt disease on light conditions, soil microbial biomass, litter decomposition, microbial abundance and the physical and chemical properties of the soil. Results showed that in a forest currently affected by pine wilt disease, there was higher light penetration, greater microbial biomass carbon, and a faster rate of litter decomposition. Microbial abundance was shown to be reduced in pine wilt affected areas. There were close correlations between the biological and physicochemical properties of the soil, but the reason for the decrease in microbial abundance is not yet well understood, and thus requires further study.

Keywords

Pine wilt disease Soil microorganisms Litter decomposition Microbial biomass 

Notes

Acknowledgments

We would like to thank the GELs programme of the Graduate School for International Development and Cooperation, Hiroshima University for inviting us in the International Workshop Summer Course 2009 (5–21 August), which gave us a good working environment to write this manuscript. We also acknowledge the Higashi-Hiroshima City Government for allowing us to use the Ryuosan area for this study. This study was partially funded by the Saijo Environmental Association for Preserving Mountains and Water.

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Copyright information

© International Consortium of Landscape and Ecological Engineering and Springer 2011

Authors and Affiliations

  1. 1.Biology DepartmentCollege of Natural Science and Mathematics, Mindanao State UniversityMarawiPhilippines
  2. 2.Graduate School for International Development and Cooperation (IDEC), Hiroshima UniversityHigashi-HiroshimaJapan

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