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A Microcosm Approach to the Detection of the Effects of Herbicide Spray Drift in Plant Communities

机译:检测植物群落中除草剂喷雾漂移影响的一个缩影方法

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It is often difficult to measure and predict the impacts of toxic chemicals, such as herbicides, on natural communities. This is especially true under conditions of spray drift when the amount received by the organisms downwind from the sprayer may be at sub-lethal doses. Laboratory experiments are either artificial, or have not been generally carried out over long enough time periods, to be realistic. Field experiments are often difficult because of the high variability inherent in natural populations. Here an intermediate microcosm approach was used, where standardized artificial communities (eight dicotyledons with and without a grass) were tested. The artifical communities included species typical of British woodland margins, hedgerows and field margins; communities with a high conservation interest, yet potentially under threat from spray drift.
机译:通常很难测量和预测有毒化学物质(例如除草剂)对自然社区的影响。在喷雾漂移的条件下,尤其是当顺风生物从喷雾器处接收的量可能处于亚致死剂量时。实验室实验要么是人工的,要么通常没有进行足够长的时间才能达到现实。由于自然种群固有的高变异性,通常很难进行现场实验。在这里,使用了一个中间的缩影方法,对标准化的人工群落(有和没有草的八个双子叶植物)进行了测试。人工群落包括英国林地边缘,树篱和田野边缘的典型物种。具有高度保护意义的社区,但可能会受到喷雾漂移的威胁。

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