Carbon storage and soil CO2 efflux rates at varying degrees of damage from pine wilt disease in red pine stands

2013 ◽  
Vol 465 ◽  
pp. 273-278 ◽  
Author(s):  
Jaeyeob Jeong ◽  
Choonsig Kim ◽  
Kwang-Soo Lee ◽  
Nanthi S. Bolan ◽  
Ravi Naidu
Nematology ◽  
2006 ◽  
Vol 8 (6) ◽  
pp. 869-879 ◽  
Author(s):  
Kazuyoshi Futai ◽  
Natsumi Kanzaki ◽  
Yuko Takeuchi

AbstractPine wilt disease causes ecological and economic damage in Japanese pine forests in spite of intensive effort to protect them from the pine wood nematode, Bursaphelenchus xylophilus. Pine trees infected with B. xylophilus emit a characteristic bouquet of volatile compounds bioactive to the vector beetle of the nematode, Monochamus alternatus, and potentially affecting symptom development inside the trees. To investigate the qualitative and quantitative properties of volatile compounds in the field, we profiled the volatile emissions in two Japanese black pine stands, one naturally suffering from pine wilt disease and the other artificially inoculated with B. xylophilus. In both pine stands, the emission of some terpenoids from the infected trees such as (−)-α-pinene, began to increase in summer, overlapping the oviposition season of the vector beetle, but peaked in the summer and autumn. These data suggest that the beetles may not necessarily depend on the tremendous quantity of volatiles alone when they search for suitable trees on which to oviposit.


2011 ◽  
Vol 34 (2) ◽  
pp. 215-222 ◽  
Author(s):  
Choon-Sig Kim ◽  
Jae-Yeob Jeong ◽  
Hyun-Seo Cho ◽  
Kwang-Soo Lee ◽  
Nam-Chang Park

Mycoscience ◽  
2009 ◽  
Vol 50 (1) ◽  
pp. 63-69 ◽  
Author(s):  
Shin Ugawa ◽  
Yu Ichihara ◽  
Kenji Fukuda ◽  
Kazuo Suzuki

Forests ◽  
2019 ◽  
Vol 10 (3) ◽  
pp. 244 ◽  
Author(s):  
Choonsig Kim ◽  
Seongjun Kim ◽  
Gyeongwon Baek ◽  
A-Ram Yang

Research Highlight: Forest disturbance by insects or disease can have a significant influence on nutrient return by litterfall and decomposition, but information regarding disturbance gradients is scarce. This study demonstrated that the disturbance intensity caused by pine wilt disease greatly altered the quality and quantity of carbon (C) and nitrogen (N) in litterfall components and decomposition processes. Background and Objectives: This study was conducted to evaluate the C and N status of litterfall and litter decomposition processes in a natural red pine (Pinus densiflora S. et Z.) stand disturbed by pine wilt disease in southern Korea. Nine red pine plots with varying degrees of disturbance caused by pine wilt disease were established based on differences in the stand basal area. Litterfall and the decomposition of needle litter and branches under different degrees of disturbance were measured for three years. Results: There was a significant correlation (p < 0.05) between disturbance intensity and the C and N concentration of litterfall components depending on the time of sampling. The annual C and N inputs through litterfall components decreased linearly with decreasing disturbance intensities. The decomposition rates of branches were higher in slightly disturbed plots compared with severely disturbed plots for the late stage of branch decomposition, whereas the decomposition rates of needle litter were not affected by the disturbance intensity of pine wilt disease. Carbon and N concentrations from needle litter and branches were not linearly related to the intensities of disturbance, except for the initial stage (one year) of needle litter decomposition. Conclusions: The results indicated that the incidence of pine wilt disease was a major cause of C and N loss through litterfall and decomposition processes in pine wilt disease disturbed stands, but the magnitude of loss depended on the severity of the disease disturbance.


2006 ◽  
Vol 40 (2) ◽  
pp. 203-210
Author(s):  
Satoshi TATSUHARA ◽  
Yuki KIMINO ◽  
Shin UGAWA ◽  
Kenji FUKUDA

2018 ◽  
Vol 30 (2) ◽  
pp. 207-215
Author(s):  
Cindy US ◽  
Hazandy AH ◽  
Ahmad-Ainuddin N ◽  
Mohd-Kamil I

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