对转基因除草剂耐受性作物的生物多样性反应的预测
A R Watkinson1, R P Freckleton, R A Robinson
1Schools of Environmental and Biological Sciences, University of East Anglia, Norwich NR4 7TJ, UK. a.watkinson@uea.ac.uk
概括
转基因耐除除草剂 (GMHT) 作物可能会大大减少杂草种群,影响种子食用鸟类的食物供应. 区域影响取决于农民采用模式和现有的杂草水平.
科学领域:
- 农业生态学 农业生态学
- 环境科学环境科学
- 生态毒理学 生态毒理学
背景情况:
- 全球越来越多地采用转基因耐除除草剂 (GMHT) 的作物.
- 人们对转基因植物对非标生物的生态影响存在担忧.
- 杂草种群是各种野生动物,包括鸟类的重要食物来源.
研究的目的:
- 模拟GMHT作物引入对杂草种群的生态影响.
- 评估对种子食鸟种群的后续后果.
- 调查农民采用模式对区域影响的影响.
主要方法:
- 生态建模和模拟.
- 人口动态分析.
- 基于场景的影响评估.
主要成果:
- 引入转基因转基因作物可能会导致杂草种群的显著减少,甚至根除.
- 由于粮食资源的丧失,预计会对鸟类种群产生严重的局部影响.
- 区域影响取决于GMHT作物采用和先前存在的杂草丰富性之间的相关性.
结论:
- 转基因养作物的广泛采用对生物多样性构成潜在威胁,因为它减少了鸟类的基本食物资源.
- 管理策略和农民行为是缓解负面生态后果的关键因素.
- 需要进一步的研究来了解转基因转基因植物作物的长期,景观层面的影响.
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