Pedosphere 15(2): 204--, 2005
ISSN 1002-0160/CN 32-1315/P
©2005 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Diversity and dynamics of soil free-living nematode populations in a mediterranean agroecosystem |
LIANG Wen-Ju1,2 , I. LAVIAN1, S. PEN-MOURATOV1 and Y. STEINBERGER1 |
1 Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 52900 (Israel). E-mail: liangwj@iae.ac.cn
2 Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016 (China) |
| ABSTRACT |
| To determine the effect of agricultural management on the dynamics and functional diversity of soil nematode communities in a carrot field at Kibbutz Ramat Hakovesh, Israel, soil samples from 0-10 cm and 10-20 cm depths were collected during the growing season of carrot. Indices were used to compare and assess the response of soil free-living nernatode communities to agricultural management. Eighteen nematode families and 20 genera were observed during the growing period, with Cephalobus, Rhabditidae, Aphelenchus, Tylenchus, and Dorylaimus being the dominant genera/families. During the planting, mid-season and post-harvest periods the total number of nematodes at both depths was significantly lower (P < 0.01) in the carrot treatment than in the control plots, while during the harvest period at both depths total nematodes and bacterivores were significantly higher in the treatment plots (P < 0.01). The values of the maturity index (MI) at both depths were found to be significantly lower in the treatment plots than in the control plots during the pre-planting period (P< 0.05). Overall, WI, MI and PPI were found to be more sensitive indicators than other ecological indices for assessing the response of nematode communities to agricultural management in a Mediterranean agroecosystem. |
| Key Words: agricultural management, carrot-growing season, diversity, maturity index, nematode community |
| Citation: Liang, W. J., Lavian, I., Pen-mouratov, S. and Steinberger, Y. 2005. Diversity and dynamics of soil free-living nematode populations in a mediterranean agroecosystem. Pedosphere. 15(2): 204-. |
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