Evaluation of eco-friendly rice fields based on indicator organisms
Project/Area Number |
24580079
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Applied entomology
|
Research Institution | Kyushu University |
Principal Investigator |
UENO Takatoshi 九州大学, (連合)農学研究科(研究院), 准教授 (60294906)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | 農生態系 / 生物多様性 / 天敵利用 / 環境保全型農業 / 指標種 / 天敵 / 水田 / 寄生蜂 / クモ類 / 天敵昆虫 / IPM / 指標生物 |
Outline of Final Research Achievements |
The present study investigates whether beneficial organisms like insect natural enemies could be good biological indicators for general arthropod biodiversity and agricultural practice. Field survey was made to evaluate the abundance and biodiversity of natural enemies in rice paddies where chemical inputs, i.e., insecticide use, were different. The results showed that reduction of chemical inputs led to an increase in species richness or diversity of natural enemies including parasitoids and predators. Then, the data were analyzed to examine suitable indicator species to assess environmental soundness of agricultural practice and biodiversity in rice paddies. The density of several species of natural enemies did respond both to pesticide use and to general arthropod biodiversity. The analyses thus have indicated that natural enemies can be suitable as bio-indicators. Usefulness of indicator species in rice paddies is discussed in the context of ecologically sound agriculture.
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Report
(4 results)
Research Products
(11 results)