Response of soil microbial communities to changes in a forest ecosystem brought about by pine wilt disease |
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Authors: | Jhonamie A Mabuhay and Nobukazu Nakagoshi |
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Institution: | (1) Biology Department, College of Natural Science and Mathematics, Mindanao State University, 9700 Marawi, Philippines;(2) Graduate School for International Development and Cooperation (IDEC), Hiroshima University, Higashi-Hiroshima 739-8529, Japan; |
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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. |
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